People
- 'Cavellus' see McCall, Patrick Joseph (P.J.), 1861-1919
- 'Comanche' (Horse), d.1890
- 'Hood, Benjamin', fl.1886
- (de) Spinoza, Baruch 1632-1677
- (von) Leibniz, Gottfried Wilhelm. 1646-1716
- .
- Aalen, F.H.A. (Fred), 1934-2015
- Abban, Saint, d. 620
- Abbot, Charles, 1st baron Colchester, 1757-1829
- Abbot of Druimenaig
- Abdülmecid I, Ottoman Sultan, 1823-1861
- Abell, Abraham, 1783-1851
- Abercorn family
- Abercrombie, Leslie Patrick, Sir, 1879-1957
- Abercromby, Ralph, Sir, 1734-1801
- Abernethy, John, 1680-1740
- Abraham, James Johnston, 1876-1963
- Abrahamson, Leonard "Lenny", 1966-
- A Búrc, Éamon
- Acgilbert, Bishop of Wessex, fl.644-672
- Acheson, Anne Crawford, 1882-1962
- Acheson, Archibald, 2nd Earl of Gosford, 1776-1849
- Acheson, Arthur, 1st Earl of Gosford, c.1742-1807
- Acheson, Robert, 1763-1824
- Acheson, Vincent Andrew, 1887-1916
- Acheson family
- Achilli, (Giovanni) Giacinto, c.1803-
- Acland, Henry Wentworth Dyke, 1st Baronet, KCB, 1815–1900
- Acontius, Jacobus, c.1520-1567
- Acton, Charles, 1914-1999
- Acton, John Emerich Edward Dalberg, 1st baron Acton, 1834-1902
- Acton, John Francis Edward, Sir, 1736-1811
- Acton family
- Acuña, Diego Sarmiento de, Count Gondomar, 1567-1626
- Adair, Cornelia Wadsworth, 1837-1921
- Adair, John George (Jack), 1823-1885
- Adair, Johnny 'Mad Dog'
- Adair, Patrick, c.1624-1694
- Adair, Thomas, V.C., 1836-1901
- Adair, William, Revd.
- Adair family
- Adam, Abbot of Melrose and Bishop of Caithness, d.1222
- Adam, James, d.1794
- Adam, Robert, 1728-1792
- Adam of Bremen
- Adams, Dominic
- Adams, Gerry, 1948-
- Adams, J. R. R., 1946-1993
- Adams, Jane
- Adams, John Bodkin, 1899-1983
- Adams, John Quincy, 1767-1848
- Adams, Michael, 1937-2009
- Adams, Ronnie, 1916-2004
- Adams, W.A., d.1927
- Adams, William, 1842-1910
- Adams-Reilly, Anthony Miles William, 1836-1885
- Adamson, George, 1897-1922
- Addams, Jane, 1860-1935
- Adderley family
- Addington, Henry, 1st Viscount Sidmouth, 1757-1844
- Addison, Henry Robert, 1805-1876
- Addison, Joseph, 1672–1719
- Adeliza of Louvain, c.1103-1151 ; Benedeit, fl 12th century ; Brendan, Saint, 484-577
- Adlercron, Meliora (née Bermingham), 1741-1794
- Adomnán (Adamnán), Saint, c.624-704
- Adomnán, c.624-704
- Adomnán of Iona (Eunan), c. 624 – 704
- Adrain, Robert, 1775-1843
- Adrien, Mary Ellen, 'Molly', 1873-1949
- Aelfric, Abbot of Eynsham, c.955-c.1025
- Aethicus of Istria, 7th-8th centuries : Jerome
- Agar, Charles, 1st Earl of Normanton, 1736-1809
- Agar-Ellis, Eliza Horatia Frederica (née Seymour), Lady Clifden, 1833-1896
- Agard, Sir Francis, d.1577
- Agilbert, Bishop of the West Saxons, Bishop of Paris, d.673
- Agnes de Valence, d. c.1310
- Agnew, Andrew, 1869-1932
- Agnew, Arthur
- Agnew, Arthur Linden, 1896-1977
- Agnew family
- Ahearn, Richard, fl. 1875-1915
- Ahearn, Rodney, 1895-1915
- Ahearne, Claire, d.2007
- Aher, David, c.1778-1842
- Ahern, Bartholomew Patrick ('Bertie'), 1951-
- Ahern, Bertie, 1951-
- Ahern, James Lucey, 1868-1949
- Ahern, Stephen
- Aherne, Maurice Christopher, d.1921
- Ahlqvist, Anders, 1945-2018
- Ahmed, Sara, 1969-
- Ahn Eak-tai, 1906-1965
- Aickin, Joseph, fl. 1693–1705?
- Aidan, d. 651
- Aidan, Saint, d. 651
- Aikeen, Frank, 1898-1983
- Aiken, Francis Thomas, 1898-1983
- Aiken, Francis Thomas, 1898-1983
Aiken, Frank, see Aiken, Francis Thomas, 1898-1983
- Aiken, Frank
- Aiken, Frank, 1898-1983
- Aikenhead, Mary, 1787-1858
- Ailbe, bishop and saint, d. 534?
- Ailerán (Aileranus Sapiens), d. 665
- Ailerán, d. 664 or 5
- Ailerán, d. c.665
- Ailill
- Ailill mac Mágach
- Airbertach Mac Cosse Dobráin, Airbertach, d.1016
- Aird, James J., 1864-1916
- Aitken, William Maxwell, 1st baron Beaverbrook, 1879-1964
- al-Asaad, Khaled Mohamad, 1932-2015
- al-Khwarizmi, Mohammed ibn-Musa, d. 847
- Alan, Lord of Galloway, d. 1233
- Albert Francis Charles Augustus Emmanuel, prince consort, 1819-1861
- Albinus O'Molloy (Ailbhe Ua Máel Muaid), ?- 1223
- Alcenius, Otto, 1838-1913
- Alcock, Benjamin, 1799/1801 - 1866
- Alcock, Benjamin, 1801-1833
- Alcock, James, -1893
- Alcock, John William, Sir, 1892-1919
- Alcock, Sarah, c .1808 - post-1870
- Alcock, Thomas, 1823-1891
- Alcuin, c.740-804
- Alderdice, John, d.c.1950
- Aldfrith (d. 704/5), king of Northumbria
- Aldfrith, king of Northumbria, d. 705
- Aldfrith, Saint, d. 705
- Aldfrith of Northumbria, King
- Aldhelm
- Aldhelm, bishop and saint, d. 709x10
- Aldrich, George Arthur, 1910-1999
- Aldworth, Elizabeth, 1692?-1772
- Aldworth family (of Newmarket [County Cork])
- Alen, John, 1476-1534, archbishop of Dublin
- Alen, John, MP, fl. 1560
- Alen family
- Alexander, Cecil Frances (née Humphreys), 1818-1895
- Alexander, Cecil Frances, 1818-1895
- Alexander, David Gibson, c1891-1918
- Alexander, Du Pre, second earl of Caledon, 1777–1839
- Alexander, Hannah (fl. 1680)
- Alexander, Hannah, fl.1670-1686
- Alexander, Hannah Dorothea, 1686-1773
- Alexander, Harold Rupert Leofric George, 1st earl Alexander of Tunis, 1891-1969
- Alexander, Harold Rupert Leofric George, first Earl Alexander of Tunis, 1891-1969
- Alexander, Henry, 1763?-1818
- Alexander, James, d.185?
- Alexander, James, d. 1704
- Alexander, John, 1764-1843
- Alexander, William, bishop, 1824-1911
- Alexander II, king of Scots, 1198-1249
- Alexander III, king of Scots, 1241-1286
- Alexander III, pope, c.1105-1181
- Alexander VI, pope, 1431-1503
- Alexandra, queen, 1844-1925
- Alexiou, Margaret
- Alfonso X, King of Castille, 1221-1284
- Alfred, king of Wessex, 848x9-899
- Alfred, Prince, Duke of Edinburgh and Saxe-Coburg Gotha, 1844-1900
- Alfred [the Great], 848/9-899 ; Brian Bóruma, High-King of Ireland, c.941-1014 ; Æthelred II, fl. c.854-c.862
- Alibi Jangil'din (Dzhangildin Alibi), 1884-1953
- Alice, Princess [Princess Alice of Albany], countess of Athlone, 1883–1981
- Alison, Francis, fl. 1735
- Alker, George, fl. 1819-1843
- Alker, Samuel, fl.1789-1828
- Alkin, Robert, 1744-1826
- Allan, Clara (née Neale), fl.1885-1940
- Allan, Frederick James(' Fred'), 1861-1937
- Allan, Frederick James, 1861-1937
- Allan, Harry, d.1950
- Allan, William, 1813-1874
- Allen, Alfred, 1925-
- Allen, Dave see O'Mahony, David Tynan, 1936-2005
- Allen, Ethan, 1738-1789
- Allen, Fr. Thomas, fl 17787
- Allen, Gregory, 1927-2001
- Allen, Henry, 1922-1994
- Allen, James, d.1799
- Allen, John, 1st Viscount Allen, 1661-1726
- Allen, John, c.1777-c.1855
- Allen, John, fl. 1597
- Allen, Margaret HRHA, 1832-1914
- Allen, Seán, d. 1921
- Allen, W. E. D., 1901-1973
- Allen, William, c.1750-1826
- Allen, William, cardinal, 1532-1594
- Allen, William John Campbell
- Allen, William Palladius, 1892-1984
- Allen, William Philip, 1848-1867
- Allen, William Philip, 1848-1867,
- Allen, William Philip, 1848–67
- Allen, William Philip, d. 1867
- Allende Gossens, Salvador Isabelino, 1908-1973
- Allen Family
- Allen family
- Alley, Peter, 1941-2016
- Allgood, Sara, 1883-1950
- Allies, Thomas William (1813-1903)
- Allingham, Helen, nee Paterson, 1848-1926
- Allingham, William, 1824-1889
- Allingham family
- Allison, Herbert T., 1854-1947
- Allman, Dora, 1871-1955
- Allman, James C., fl.1820-1846
- Almqvist, Bo Gunnar, 1931-2013
- Aloysius, Fr., OFM (Travers, William Patrick), 1870-1957
- Alpenny, Joseph Samuel, 1787-1858
- Alt, Isabella (née Baker), c.1798/99-1854
- Alt, Terence, 1801-1873
- Altman, Albert Liebes, 1852?-1903
- Altman, Emanuel Patrick Columbanus, 1889-1963
- Altman, Mendel, 1860-1915
- Alvey, Desmond, fl.1929-1959
- Amableid, Jean Joseph, d. 1823
- Amery, John, 1912-1945
- Amery, Leopold Charles Maurice Stennett, 1873–1955
- An-sky (Ansky), S., pseud. see Rappoport, Shloyme Zanvl, 1863-1920
- Anatolius, bishop of Laodicea, +cAD 282
- Anatolius, Saint, Bishop of Laodicea.
- An Craoibhín Aoibhinn (pseud.) see Hyde, Douglas (de hÍde, Dubhghlas), 1860–1949
- Anderon, Margaret (Splaine), fl.1882-1911
- Anderson, Alexander, 1858-1936
- Anderson, Anna, d. 1874
- Anderson, Christopher, Rev., d. 1852
- Anderson, Christopher, Revd, d. 1852
- Anderson, Emily, 1891 - 1962
- Anderson, Flora Mac Donald, c.1852-1870
- Anderson, Frederick, 1922-2001
- Anderson, Harry H.
- Anderson, Hugh, d. 1899
- Anderson, James Augustine, O.S.A., 1837-1903
- Anderson, John, 1747-1820
- Anderson, John, General Sir, 1908-1988
- Anderson, John Henry, 1814-1874
- Anderson, Linda, 1949-
- Anderson, Mary, d. 1940
- Anderson, Paris
- Anderson, Paris, 1711-1772
- Anderson, Richard John, d. 1914
- Anderson, Robert Andrew, 1860-1942
- Anderson, Roy, d.2016
- Anderson, Thomas, 1921-1996
- Anderson, William, d.1876
- Anderson family
- Andrew (apostle)
- Andrews, Christopher S., Todd, 1901-1985
- Andrews, David, 1935-
- Andrews, Eamonn, 1922–1987
- Andrews, J. H. (John Harwood), 1927-
- Andrews, J.H., 1927–2019
- Andrews, John
- Andrews, John, 1927-2019
- Andrews, John Miller
- Andrews, John Miller, 1871-1956
- Andrews, Mary K., 1852-1914,
- Andrews, Thomas, 1813-1885
- Andrews, Thomas, 1873-1912
- Andrews, Thomas, fl. 1890-1912
- Andrews, William, fl. 1617-1635
- Andrews family
- Angevin dynasty
- Anglade, François, 1757-1834
- Anglesey, Henry Paget, marquess of, 1768-1854
- Anglicised as O'Sullivan, Humphrey
- Anketell Jones family
- Anne, Countess of Roden, fl. 1798
- Anne, Countess of Roden, fl. 1798,
- Anne, queen, 1665-1714
- Anne Boleyn, queen, c.1500-1536
- Annesley, Arthur, 1st earl of Anglesey, d. 1686
- Annesley, Francis, Sir, baron Mountnorris and 1st viscount Valentia, d. 1660
- Annesley, Hugh, 5th Earl, 1831-1908
- Annesley, James, 1715-1760
- Annesley, Mabel, Lady, 1881-1959
- Annesley, Priscilla countess, 1866-1941
- Annesley family
- Annett family
- Anscombe, Gertrude Elizabeth Margaret, 1919-2001
- Anselm, bishop and saint, 1033-1109
- Anselm, Saint
- Anson, George, Baron Anson, 1697-1762
- Anson, George,Baron Anson, 1697-1762
- Anson, Peter Frederick, 1889-1975
- Anson family
- Anstey, Thomas Chisholm, 1816-1873
- Anthony, Ernest John, d. 1955
- Anthony, George S., Captain, fl. 1876
- Anthony, Moll
- Anthony, Redmond, d. 1848
- Anthony. Moll of the Red Hills (d.1878)
- Anthony family
- Antisell, Thomas, 1817-1893
- Antonio de Patricio (Anthony/Daniel Fitzpatrick), 1665/6-post-1699
- Antony of Egypt, saint, 251-356
- Aodh Ó Neill, 1540-1616
- Aonghas
- Ap Huw, Robert, c.1580-1665
- ap Hywel Swrdwal, Ieuan, ?1430-?1480
- Apjohn, Isabella Lloyd, d.1907
- Apjohn, James, 1795-1886
- Appleby, Eric, fl. 1914-1918
- Arana Goiri, Sabino Policarpo, 1865-1903
- Arbuckle, James, 1690-1742
- Arbuckle, Robert,
- Arbuthnot, Harriet, 1793-1834
- Archangel Michael
- Archbold, Brendan, 1947-2014
- Archbold, Christopher (Nicholas), 1591-1659
- Archbold, Nicholas, c. 1588-1650
- Archdall, Mervyn, ?1833-?1913
- Archdeacon, John, fl. 1542
- Archdeacon, Matthew, 1798-1853
- Archdeacon, Nicholas Joseph, d. 1823
- Archdeacon, Odo, fl. 1204
- Archdeacon family
- Archdekin, Richard, 1619-1693
- Archer, Charles, d. 1918
- Archer, Forster, 1759-
- Archer, Francis, 1803–1875
- Archer, Henry, fl. 1800-1850
- Archer, James, S. J., 1550-c.1625
- Archer, James E. Canon, fl.1904-1935
- Archer, John, d. 1810
- Archer, Luke
- Archer, Richard, d. 1836
- Archer, S.E. (Sheelagh Elizabeth ), 1916-2006
- Archer, Thomas, d.1617
- Archer, William, 1830-1897
- Archer family
- Archibald, family
- Ardagh, John Charles, Sir, 1840–1907
- Ardee (County Louth)
- Arden, John, 1930-
- Arensberg, Conrad Maynadier, 1910-1997
- Argall, Philip Henry, 1854-1922
- Argory family
- Arigho, Jack, d. 1999
- Aristotle
- Aristotle, 384-322 BC
- Arkwright, Sir Richard, 1732–1792
- Arlington, Henry Bennet, earl of 1618-1685
- Armattoe, Raphael E. G., 1913-1953
- Armitage, Ella Sophia, 1841-1931
- Armitage, Frederick, fl. 1906
- Armitage, Frederick, fl. 1906-1921
- Armitage, Robert, D.S.O., 1857-1954
- Armour, James Brown
- Armour, James Brown, 1841-1928
- Armour, James Brown, 1841-1928 ; Montgomery, Henry, 1788-1865
- Armour, William Staveley, 1883-
- Armstong, Paddy, 1950-
- Armstrong (née Glynn), Kate, 1855-1977
- Armstrong, Aylmer, 1924-2014
- Armstrong, Bob
- Armstrong, Laura
- Armstrong, Richard, d. 1880
- Armstrong, Robert Williams, 1824-1884
- Armstrong, Thomas, d. 1874
- Armstrong-MacDonnell, William Edward
- Armstrong family
- Armstrong of Ilminster, Lord
- Armytage, Harry, 1862-1933
- Arnaud, Jean, c.1667-1718
- Arnold, George, d.1975
- Arnold, Matthew, 1822-1888
- Arnold, Matthew, 1822-1888 ; Burke, Edmund, 1729-1797 ; O'Brien, Conor Cruise, 1917-2008
- Arnold, Matthew, 1822-1888,
- Arnott, John, Sir, 1837-1898
- Arnstein, Walter L.
- Arnstein, Walter L., 1930-2019 ; Murphy, William, 1845-1919 ;
- Arnulph
- Arthur, Desmond, 1884-1913
- Arthur, Desmond Lucius, 1884-1913
- Arthur, Helen, fl.1673-1703
- Arthur, king, supp. fl. in or before 6th c.
- Arthur, Mary Caroline, Viscountess FitzAlan of Derwent, d.1938 ; Howard, Edmund Bernard Fitzalan, 1st Viscount FitzAlan of Derwent, Lord Lieutenant of Ireland, 1855-1947
- Arthur, Prince, 1st duke of Connaught and Strathern, 1850-1942
- Arthur, Richard, d. 1646
- Arthur, Thomas, 1593-1675
- Arthur, Thomas, d. 1670
- Arthur, Thomas, d.1674/5
- Arthur, William, 1819-1901
- Arthur family
- Arthurs, Miriam, 1923-2006
- Arthurs, Mirian
- Art Mac Cuind, 2nd/3rd century
- Artukovic, Andrija, 1899-1988
- Arundell family
- Ash, Thomas, fl. 1689
- Ashbee, Charles Robert, 1863-1942
- Ashbury, Joseph, 1638-1720
- Ashby, Eric, Baron Ashby, 1904–1992
- Ashe, Thomas, 1885-1917
- Ashe, Thomas, Sir, fl.1703
- Ashford, William, 1746-1824
- Ashley-Cooper family, earls of Shaftesbury
- Ashlin, G.C., 1837-1921
- Ashton, John, 1860-1943
- Ashton, Robert, fl. 1720s
- Ashworth, John Harvey, 1795-1882
- Askwith, George Ranken, Baron Askwith, 1861-1942
- Asmal, Kadar
- Asmal, Kadar ; Asmal, Louise
- Asquith, Herbert Henry, 1st earl of Oxford and Asquith, 1852-1928
- Asser, bishop, d. 909
- Astley, Philip, 1742-1814
- Aston, Gerald J, 1907-2000
- Aston, Gerald J, 1917-2000
- Aston, Gerald J., 1907-2000
- Aston, James Gordon, fl. 1948-1970
- Aston, John Campbell, 1843-1935
- Aston, William, Sir
- Athelstan, fl.924-939
- Atherton, John, bishop, 1598-1640
- Atkins, Humphrey,1922-1996
- Atkins, W. fl.1922
- Atkins, William Ringrose, 1812-1887
- Atkins family
- Atkinson, John Mercier,
- Atkinson, Robert
- Atkinson, Sarah, 1823-1893
- Atkinson family
- Attala, Saint, d.627
- Atterbury, Francis, bishop, 1662-1732
- Atthill, Lombe, 1827-1910
- Attlee, Clement Richard, 1st earl Attlee, 1883-1967
- Attley, Bill, 1938-
- Atwood, William, d. 1705?
- Aubrey, John, 1626-1697
- Auchinleck, Claude John Eyre, Sir, 1884-1981
- Auchinleck family
- Audley family
- Augustine, bishop and saint, d. 604
- Augustine, Saint
- Augustine of Hippo, Saint, 354-430
- Augustine of Ireland (Augustinus Hibernicus) c650
- Augustinus (Pseudo), fl. mid 7th cent
- Augustinus Hibernicus (Augustinus (Pseudo)), fl. mid 7th cent
- Augustinus Hibernicus, see Augustinus (Pseudo), fl. mid 7th cent
- Augustinus Hibernicus - fl 7th century
- Augustinus hibernus, fl. 655
- Augustus Frederick, Prince, duke of Sussex, 1773–1843
- Aulad Ali, Mir, 1832-1898
- Aungier, Francis, 1st earl of Longford, d. 1700
- Aungier, Gerald, 1640-1677
- Aurand, Harold W.
- Austen, Jane, 1775-1817
- Austen, Mary
- Austin, Augustus,
- Austin, John, 1790-1859
- Austin, John, S. J., 1717-1784
- Austin, Samuel, 1829-post 1877
- Austin, William
- Austin, William, fl. 1877-1890
- Autry, Orvon Grover (Gene), 1907-1998
- Auxilius
- Auxilius, ?5th cent.
- Avaux, Jean-Antoine de Mesmes, comte d', fl. 1689-1690
- Averell, Adam, 1754–1847
- Averell, Adam, fl. 1808
- Averell, John, Rev., d. 1771
- Averell, John, Revd, d. 1771
- Averell family
- Avesbury, Robert, d. 1359
- Axford, Emily (née Applebe), fl. c.1859-1904
- Axford, Walter Godfrey, c.1861-1942
- Axtell, Daniel, d.1660
- Ayer, Alfred Jules, Sir, 1910-1989
- Ayleway, Robert, fl.1669-1692
- Aylmer, Fenton, Sir, 1768-1816
- Aylmer, Gerald Edward, 1926-2000
- Aylmer, William, 1778-1820
- Aylmer family
- Aylward, Alfred
- Aylward, Anne, fl. 1871
- Aylward , John
- Aylward, John
- Aylward, Margaret, 1810-1889
- Aylward, Margaret Louisa, 1810-1889
- Aylward, Margaret Louisa, 1810–89
- Aylward, Margaret Louisa, 1810–1889
- Aylward, Mary, 1913-2005
- Aylward, Richard, 1872-1954
- Ayson family
- Ayton, Alexander, 1829-1900
- Aífe (Aoife, Eva), fl. c.1153–1189
- Baartman, Sara ‘Saartjie’, c.1789-1816
- Babbage, Charles, 1791-1871
- Babington, Charles, 1808-1895
- Babington family
- Bacmeister, Georg Heinrich, 1807-1890
- Bacon, Edward, d. 1785
- Bacon, Francis, 1st baron Verulam & Viscount St Albans, 1561-1626
- Bacon, Francis, 1909-1992
- Bacon, Francis, 1909-1992,
- Bacon, Francis 1909-1992
- Bacon , George Washington, 1830-1922
- Badovici, Jean, 1893-1956
- Bage, Robert, 1728?-1801 ; O'Keeffe, John, 1747-1833
- Bagehot, Walter, 1826-1877
- Bagenal (Bagnal(l)), Nicholas, 1510?-1591
- Bagenal, (Philip) Hope (Edward), 1888-1979
- Bagenal, Dudley, 1638-1712
- Bagenal, Makel, d. 1595
- Bagenal, Philip Henry, 1850-1927
- Bagenal, Walter, 1614-1652
- Bagenal, Walter, fl. 1652
- Bagenal family
- Bagenal [Bagnal], Nicholas, Sir, d. 1590
- Bagenal [Bagnal], Sir Henry, c.1556–1598
- Bagenal [Bagnal], Sir Henry, c.1556–1598
- Bagnell, Phineas, fl. 1740-1780
- Bagnell family
- Bagot family
- Bagshawe, Samuel, 1713-1762
- Bagwell, John
- Bagwell, John, 1811-1883
- Bailey, Harry, 1909-1989
- Bailey, Lady, Mary Westenra, 1890-1960
- Bailey, Mary, Lady, d. 1960
- Bailey, Wellesley, 1846-1937
- Bailey, William F., 1857-1917
- Bailey O'Callaghan, Edmund, 1797-1886
- Bailie, W. Desmond, 1920-
- Baillie, John Robert, Lt., fl. 1858
- Baillie, William
- Baillie, William, 1723-1810
- Bain, John, 1806-1903
- Baines, John Thomas, 1820-1875
- Baird, James
- Baird, William Francis Burgoyne, fl.1911-1960
- Bairead, Ciarán
- Bairéad, Ciarán, 1905-1976
- Bairéad, Sighle, 1903-1985
- Bairéad, Stiofán, 1867-1921
- Bairéad, Stiofán, 1867–1921
- Bairéad, Tomás, 1893-1973
- Baithin, Saint, c.536-600
- Baker, Don, 1950-
- Baker, Isaac, fl.1878-1892
- Baker, Joe, 1900-
- Baker, John Wynn, 1725/6-1775
- Baker, John Wynn, c.1730-1775
- Baker, William Kellett, c.1806-1857
- Baker family
- Balar (Balor)
- Balch, William Stevens, 1806-1887
- Bald, William, 1789-1857
- Bald, William, 1789?-1857
- Baldwin, Herbert, fl. 1832
- Baldwin, Richard, 1668?-1758
- Baldwin, Richard, 1668?-17588
- Baldwin, Robert, 1804-1858
- Baldwin, Stanley, 1st earl Baldwin of Bewdley, 1867-1947
- Baldwin, William, 1755-1844
- Bale, John, 1495-1563, bishop of Ossory
- Bale, John, bishop, 1495-1563
- Balfe, Brendan, 1945-
- Balfe, Edward, fl. 1913-1956
- Balfe, John Donnellan, 1816-1880
- Balfe, M. W. (Michael William), 1808-1870
- Balfe, M.W. (Michael William), 1808-1870
- Balfe, Michael W., 1808-1870
- Balfe, Michael Wiliam, 1808-1870
- Balfe, Michael William, 1808-1870
- Balfe, Richard
- Balfour, Arthur James, 1st earl Balfour, 1848-1930
- Balfour, Arthur James, 1st Earl Balfour, 1848-1930 ; Gladstone, William Ewart, 1809-1898 ; Parnell, Charles Stewart, 1846-1891
- Balfour, Blayney Townley III, 1769-1856
- Balfour, Francis Maitland, 1851-1882
- Balfour, Gerald William, earl of Balfour, 1853-1945
- Balfour, John, 1808-1884
- Balkeley, Richard, Sir, fl. 1100-1200
- Ball, (Frances Mary) Teresa, 1794-1861
- Ball, Adam Gustavus, 1821-1882
- Ball, Anne, 1808-1872
- Ball, Charles, Sir, 1851-1916
- Ball, Charles Fredrick, 1879-1915
- Ball, Edward,
- Ball, Frances Mary Teresa (Bál, Proinsias), 1794 - 1861
- Ball, Frances Mary Teresa, Mother, 1794-1861
- Ball, Frances Teresa, 1794-1861
- Ball, John, 1818-1889
- Ball, John, d. 1813
- Ball, John Thomas, 1821-1882
- Ball, Margaret, d.2011
- Ball, Margaret, d. c.1584
- Ball, Margaret, fl. 1515-1584
- Ball, Mary, 1812-1898
- Ball, Robert, 1802-1857
- Ball, Robert Stawell, 1840-1913
- Ball, Valentine, 1843-1895
- Ball, Walter
- Ball, William, fl. 1789
- Ballabene, Gregorio, 1720 1803
- Ballagh, Robert, 1943-
- Ballagh, Robert, 1943- : Paget, Walter Stanley, 1863-1935
- Ballagh, Robert, b. 1943
- Ballance, John, 1839-1893
- Ballance, John, 1839-post 1890
- Ballantine, William,
- Ballantyne, R. M., 1825-94
- Ballard, Brian, b.1943
- Ballard, William, fl.1677
- Balloo, John, fl. 1792-1850
- Balmer, William, 1922-
- Baltimore, Sir George Calvert, 1st Lord
- Balze, Paul, d. 1884
- Bambrick, Thomas, 1911-1939
- Bambury, Jim, 1922-1997
- Banfield family
- Bang Bang
- Banim, John, 1798-1842
- Banim, John, 1798-1842 ; Banim, Michael, 1796-1874
- Banim, Michael, 1796-1874
- Banko family
- Banks, Alfie
- Banks, Joseph, Sir, 1743-1820
- Banks, Joseph, Sir, 1743–1820
- Banks, Patrick, b.1857
- Banks, William Hartland, 1867-1930
- Bannard Cogley, Daisy (Johanna Mary), 1884-1965
- Bannon, John, 1829–1913
- Bannon, John B., 1828-1913
- Bannon, John B., 1829-1913
- Banon family
- Banville, John, (aka Benjamin Black), b. 1945
- Banville, John, b. 1945
- Banville, Larry, 1796-1869
- Banville, William John, b. 1945
- Baptist, Rachel, fl. 1757-1773
- Barat, Madeleine Sophie, 1779-1865
- Barat, Madeleine Sophie, d. 1865
- Barbauld, Anna Laetitia, 1743-1825
- Barber (Barbor), Mary c.1685-1755
- Barber, Francis (1751-1783)
- Barber, Jane, fl. 1798
- Barber, Mary, d. 1757
- Barber, Samuel, 1738-1811
- Barber, Samuel, 1738?–1811
- Barberi, Dominic, 1792-1849
- Barbour, John, c. 1330–1395
- Barbour, John Dougherty, 1824-1901
- Barbour family
- Barclay Fox, Robert, 1817-1855
- Barcroft, family
- Bardon, Jonathan, 1941-2020
- Bardon, Jonathan, b.1941
- Bardwell, Leland
- Bardwell, Leland, ?1926/28-
- Bardwell, William, 1795-1890
- Baretti, Giuseppe Marc'Antonio, 1719-1789
- Bargett, Nicholas, fl.1537-1542
- Bariesse, Luiseta
- Barine, Arvède, pseud. see Vincens, Louise-Cécile (née Bouffé), 1840-1908
- Baring, Cecil, d.1934
- Baring-Gould, Sabine, 1834-1924
- Barker, Ernest, Sir, 1874-1960
- Barker, Marcia
- Barker, Ponsonby and Ponsonby-Barker family of Kilcooley Abbey
- Barker, Samuel, 1707-1769
- Barkley, John Monteith, 1910-
- Barlow, Jack, promotor, 1887-1966
- Barlow, James, d.1759
- Barlow, Joel, 1754-1812
- Barlow, John, fl. 1864-1874
- Barlow, Robert Joseph, 1804?-1878
- Barnaby, Francis
- Barnacle, Nora, 1884-1951
- Barnard, T. C. (Toby Christopher)
- Barnard family
- Barnardo, Thomas John, 1845–1905
- Barnell, William, 1777-1821
- Barnes, Albert Coombs, 1872-1951
- Barnes, Eileen, 1876-1956
- Barnes, Eileen, fl. 1950
- Barnett, Edward John Boyd, 1883-1966
- Barnewall, Christopher, Sir, 1522-1575 ; Dillon, Lucas, Sir, d.1593
- Barnewall, John, c.1634-1691
- Barnewall, Margery, fl. 1581-1582
- Barnewall, Matthias, Lord Trimleston, c.1670-1692
- Barnewall family
- Barnewell, Matthew, 1659-1738
- Barnewell family
- Barnum ,Phineas Taylor, 1810-1891
- Barnwall, Nicholas, c.1592-1663
- Barnwall family
- Barnwell, John
- Baron, Bonaventure, O. F. M., 1610-1696
- Baron, Bonaventure, OFM, 1610-1696
- Baron, Geoffry
- Barr, Albert Glenn, 1942-2017
- Barr, Andrew, 1913-2003
- Barr, James Hamilton,
- Barra-Ó Dúghaill, Risteard, 1871-1933
- Barra-Ó Dúghaill, Risteárd (Barry-Doyle, Richard), 1871-1933
- Barralet, John James, 1747-1815
- Barralet, John James, 1747-1815 ; Boorse, Henry A.
- Barraud, Francis Philip, 1824-1900
- Barraud, Henry, 1811-1874
- Barre, William Joseph, 1830-1867
- Barret, George, 1732-1784
- Barret, Michael
- Barrett, Daniel William, fl. 1876-1880
- Barrett, Edward F., 1869-1936
- Barrett, Evelyn, b.1914
- Barrett, Frederick Whitfield, 1875-1949
- Barrett, Jackie, d.2014
- Barrett, Jacky, fl. 1821
- Barrett, James Rupert Edward Boyd, c.1904–1976
- Barrett, Matthew James, 1812-1871
- Barrett, Peter, 1901-1923
- Barrett, Richard, 1889-1922
- Barrett, Rosa
- Barrett, Rosa Mary, 1845-1936
- Barrett, Sophia Violet, d. 1918
- Barrett, Sophia Violet, d.1918
- Barrett, Thomas, fl. 1497
- Barrett, William, fl. 1896-1907
- Barrett, William Fletcher, 1844-1925
- Barrett, Willie, 1907-1923
- Barrett-Hamilton, Gerald Edwin Hamilton, 1871-1914
- Barrie, Hugh Thom, 1861?-1922
- Barrington, Charles, 1834-1901
- Barrington, Charles Burton, Sir, d. 1943
- Barrington, Edward
- Barrington, Florence, 1894-1968
- Barrington, George, 1755-1804
- Barrington, Jonah, Sir, 1760-1834
- Barrington, Jonah, Sir, 1760-1834 : Davis, Thomas Osborne, 1814–1845
- Barrington, Matthew, Sir, 1788-1861
- Barrington, Richard Manliffe, 1849-1915
- Barrington, William
- Barrington, William Hartigan, 1815-1872
- Barrington, Winifred, d. 1921
- Barrington, Winnie (Winifred), 1897-1921
- Barrington family
- Barron (Barún), Phillip (Pilib), c.1801-c.1842
- Barron, Philip, c.1802-
- Barron, Philip Fitzgerald, 1801/2?-1844
- Barron, Richie
- Barron, saint, ?6th century
- Barron, Saint, c.490-c.560
- Barron, Thomas J. (Thomas James), 1903-1992
- Barron family
- Barrow, Geoffrey Wallis Steuart, 1924-
- Barrow, Viola, 1917-1992
- Barry, David, 1873-1938
- Barry, David, fl. 1913
- Barry, Denis, 1883-1923
- Barry, Dr. James Miranda, c.1792-1865
- Barry, Edward, M.P., 1852-1927
- Barry, Garret (Gerat), d. 1646
- Barry, Garrett, c.1845 - 1899
- Barry, Garrett Standish, fl. 1832
- Barry, George Frith, ?1836-1891
- Barry, Helena, b.1709
- Barry, James, 1741-1806
- Barry, James, 1741-1806 ; Dunne, Tom, 1939- ; Maclise, Daniel, 1806-1870
- Barry, James, 1741–1806
- Barry, James, 1795-1865
- Barry, James Miranda Stuart, 1795-1865
- Barry, James Redmond, 1789-1879
- Barry, John (1745-1803)
- Barry, John, 1745-1803
- Barry, John, 1799-1859
- Barry, John, 1841-1920
- Barry, John, d. 1649-1650
- Barry, John, d.1836
- Barry, John, D.D., 1816-1870
- Barry, John Milner, 1768-1822
- Barry, John Vincent William, Sir, 1903-1969
- Barry, Julia, 1885-1912
- Barry, Kathleen
- Barry, Kevin, 1902-1920
- Barry, Kevin, ?1969-
- Barry, Mary Gonzaga, Mother, 1834-1915
- Barry, Moyra Aloysius, 1885-1960,
- Barry, Redmond, Sir, 1813-1880
- Barry, Sean, 1897-1931
- Barry, Sebastian, 1955-
- Barry, Spranger, d. 1717
- Barry, Thomas, 1850-1904
- Barry, Thomas Bernardine (Tom), 1897 – 1980
- Barry, Thomas Bernardine, 1897-1980
- Barry, Tom, 1895-1976
- Barry, Tom, 1895-1976 ; Deasy, Liam, 1896-1974
- Barry, William, fl. 1864
- Barry, William Francis, 1849-1930
- Barry-Smith family
- Barry family
- Barry family, earls of Barrymoire
- Barry Moloney, Kathleen (Kathy), 1896-1969
- Barré, Isaac, Colonel, 1726-1802
- Barter, Richard, 1802-1870
- Barter, Richard, 1825-1896
- Barter, Richard, d.1870
- Barter family
- Bartholomaeus Anglicus, before 1203-1272
- Bartholomeus Anglicus (Bartholomew the Englishman), before 1203-1272
- Bartlett, Richard, d. 1603
- Bartlett, Richard, fl.1861-1862
- Bartlett, William Henry, 1856-1932
- Bartley, Anthony C. DFC, 1919-2001
- Barton, Dulcibella ('Da'), 1876-1956
- Barton, Folliot Warren, fl. 1845
- Barton, James, 1826-1913
- Barton, John, 1880-1919
- Barton, Robert Childers, 1881-1975
- Barton, Robert Childers, 1881-1975 ; Bodkin, Thomas Patrick, 1887-1961 ; Collins, Michael, 1890-1922 ; Duffy, George Gavan, 1882-1951 ; Duggan, Éamonn John (Edmund), 1878-1936 ; Griffith, Arthur, 1871-1922 ; Lavery, John, Sir, 1856-1941
- Barton, Robert Childers, 1881-1975 ; Collins, Michael, 1890-1922 ; De Valera, Éamon, 1882-1975 ; Duffy, George Gavan, 1882-1951 ; Duggan, Éamonn John (Edmund), 1878-1936 ; Griffith, Arthur, 1871-1922
- Barton, Robert Childers, 1881-1975,
- Barton, Rose, 1856-1929
- Barton, Thomas Johnston, 1802-1864
- Barton family
- Baskett, John, d. 1742
- Basquill family
- Bassett, Ray
- Bassett family
- Bastabal (Bastible), Máire (Molly), 1893-1973
- Bastable, C. F.
- Bastable, Charles Francis, 1855-1945
- Bateman, Arthur, 1921-2009
- Bateman, Ernest, 1886-1979
- Bates, Daisy
- Bates, David, 1916-1994
- Bates, David Robert, d. 1994
- Bates, Joe, 1872-1924
- Bates, Peter, d. 2010
- Bates, Ray, 1940-
- Bates, Richard Dawson
- Bates, Richard Dawson, Sir 1876-1949
- Bates, Samuel, 1838-1863
- Bates, Sir David Robert, 1916–1994
- Bateson, Thomas, c.1570-1630
- Bateson, Thomas Douglas, -1851
- Bateson, William, 1861-1926
- Bateson family
- Bath, Neville, fl. c.1770-c.1808
- Bathe, John, S.J., 1612-1649
- Bathe, Thomas, d. 1649
- Bathe, William, S.J., 1564-1614
- Batoni, Pompeo, 1708-1787
- Batoni, Pompeo Girolamo, 1708-1787
- Batt, Narcissus, c.1824-1898
- Battersby, (Miss), fl.1801-1841
- Battier, Henrietta, 1751-1813
- Battisti, Cesare, 1875 - 1916
- Baugh, William, fl. 1612
- Baumann, Arthur Anthony, 1856-1936
- Baumgarten, Rolf
- Baumgarten, Rolf, 1936-2012
- Bax, Arnold 1883-1953
- Bax, Sir Arnold Edward Trevor, 1883-1953
- Baxter, James Houston, 1894-
- Baxter, John, fl. 1800
- Baxter, William, d.2003
- Baxwell, Leslie, 1928-2004
- Bayldon, Richard, fl. 1843-1854
- Bayle
- Bayly (Bayley), Edward, Dean of Ardfert 1723-1785
- Bayly, Christopher Alan, 1945-
- Bayly, Lewis, Sir, 1857-1938
- Bayly, Maurice, fl. 1942-1943
- Bayly, Richard U., d. 1888
- Bayne, Samuel Gamble, 1844-1924
- Beach, Thomas Billis, 1841-1894
- Beadle, James Princep, 1863-1947
- Beale, Dorothea, 1831-1906
- Beale, Genevieve, 1822-1878
- Beale, Joseph, 1801-1857
- Beale, Robert
- Beamish, family
- Beamish family
- Beamish family, fl. 1904-1999
- Bearaidh, Saint
- Beard, Richard, 1801-1885
- Beard, William P., fl.1939-1945
- Beardsley, Aubrey Vincent, 1872-1898
- Beare, Donal O'Sullivan, d. 1618
- Beasley, Bobby, 1935-2008
- Beater, George Palmer, 1850-1928
- Beatles, pop group, fl. 1957-1970
- Beattie, James, 1735-1803
- Beatty, Alfred Chester, 1875-1968
- Beatty, Alfred Chester,1875-1968
- Beatty, Alfred Chester, Sir, 1875-1968
- Beatty, Edward, d. 1794
- Beatty, Francis Stewart, d. 1891
- Beatty, Hugh, 1742-1789
- Beatty, Hugo, 1742-1789
- Beatty, James, fl.1829-1844
- Beatty, John, fl. 1844
- Beatty, Mary Ann, 1814-1915
- Beatty, Michael, fl. 1844
- Beatty, Tony, 1935-
- Beatty, William, 1773-1842
- Beatty, William, 1787-1851
- Beauclerk, family, fl. 1851-1996
- Beaufort, Daniel Augustus, 1737-1821
- Beaufort, Daniel Augustus, 1739-1821
- Beaufort, Francis, Sir, 1774-1857
- Beaufort, François de Bourbon, duc de, 1616-1669
- Beaufort, Louisa, 1781-1863
- Beaufort, Louisa Catherine, 1781-1867
- Beaufort, Louise, 1781-1863
- Beaufort family
- Beaufory, Daniel Augustus, Revd, 1739-1821
- Beaumont, Gustave de, 1802-1866
- Beaumont, Gustave de, 1802-1866,
- Beauvau de Rivarennes, Gabriel de, bishop of Nantes, fl. 1636-1668
- Beavan, Emily Elizabeth (née Shaw), c.1818-1897
- Becker, Bernard, -1900
- Becker, Heinrich
- Becker, Heinrich, 2907-
- Becket, Thomas, bishop and saint, 1120?-1170
- Beckett, George Francis, 1877-1962
- Beckett, J.C., 1912-1996
- Beckett, John S. (Stewart), 1907-2007
- Beckett, Mary, 1926-201`3
- Beckett, Mary, 1926-2013
- Beckett, Matthew J., 1914-1991
- Beckett, Samuel, 1906-1989
- Beckett, Samuel, fl. 1927
- Beckett, Samuel Barclay, 1906-1989
- Beckett family
- Beck family
- Beckham, Polly
- Beckham, Thomas, d. 1863
- Becon, Richard, fl. 1594
- Bede, 673x4-735
- Bede, 673x4-735 ; Æthelbald, King of Mercia, d. 757
- Bede, Venerable, 673-735
- Bede, Venerable, 673-735 ; Chadwick, Nora Kershaw, 1891-1972
- Bedell, Ambrose, fl.1641
- Bedell, Leah Mawe (née L'Éstrange), c.1592-1638
- Bedell, William, bishop, 1571-1642
- Bedell, William, bishop, 1571-1642 ; Bernard, Nicholas ; Ussher, James, archbishop
- Bedell, William, bishop, 1571-1642 ; Clogie, Alexander, 1614-1698
- Bedell, William, bishop, 1571-1642 ; Clogie, Alexander, 1614-1698 ; Bernard, Nicholas ; O'Reilly family
- Bedell, William, bishop, 1571-1642 ; Sall, Andrew (1624-1682) ; Dopping, Anthony (1643-1697) ; Boyle, Robert (1627-1691)
- Bedell, William, bishop, 1571–1642
- Bedford, George A., fl. 1849-1851
- Bedford, John, 1601-1667
- Beechey, Richard Brydges, Admiral, 1805-1895
- Beere, Thekla, 1901-1991
- Beere, Wyndham, 1948-
- Beethoven, Ludwig van, 1770-1827
- Beevor, Thomas, Sir, 1726-1814
- Bega, saint, fl. late 7th cent
- Begenal, Beauchamp, 1735-1802
- Begley, Denis (Peter), 1859-1939
- Begley, John, Archdeacon, c.1861-1941
- Begley, John, archdeacon, fl. 1938
- Begley, Joseph, c.1896-1920
- Begley, Joseph, d.1920
- Begley, Thomas, d.1940
- Begnet, saint, 7th century
- Behan, Anthony, 1932-2021
- Behan, Brendan, 1922-1964
- Behan, Brendan, 1923-1964
- Behan, Dominic, 1928-1989
- Behan, John, b. 1938
- Behan, Kathleen (née Kearney), 1889-1984
- Behan, Paddy, 1938-2016
- Behan, William, 1893-
- Behr, Fritz Bernhard, 1842-1927
- Beiler, Ludwig Josef Georg, 1906-81
- Beirne, Bryan R., 1918-1998
- Beirne, Thomas Charles, 1860-1949
- Beit, Clementine Mabell Kitty (née Mitford), 1915-2005
- Beit, Sir. Alfred, 1903-1994
- Beit, Sir. Alfred Lane, 1903-1994
- Bell, David
- Bell, Derek, 1935-2002
- Bell, Elizabeth, 1862 - 1934
- Bell, family
- Bell, Francis, c.1813-1879
- Bell, George William, 1816-1896
- Bell, J. Bowyer, 1931-2003
- Bell, James, 1794-1872
- Bell, James, junior, 1829-1883
- Bell, John
- Bell, John, 1793-1861
- Bell, John Stewart, 1928- 1990
- Bell, John Stewart, 1928-1990
- Bell, Jonathan, 1949-2016
- Bell, Lian
- Bell, Philip Michael Hett, 1930-
- Bell, Robert, 1841-
- Bell, Robert, 1864-1934
- Bell, Sam Hanna
- Bell, Sam Hanna, 1909-1990
- Bell, Samuel David, 1868-1949
- Bell, Thomas, fl.1780
- Bell, William 1797-1871
- Bellarmine, Robert, cardinal, 1542-1621
- Bellas family
- Bellens, Jozef, 1876-1939
- Bellew, Christopher Dillon, 1763-1826
- Bellew, Dominick, archbishop, 1745-1813
- Bellew, Dominick, bishop, 1745-1813
- Bellew, John, d. 1679
- Bellew, John, fl. 1792
- Bellew, John, sir,second baronet, d.1734
- Bellew, Mrs
- Bellew-Nugent family
- Bellewe, Nicholas,( fl.1423 - c.1474)
- Bellew family
- Bellew family (of Mount Bellew [County Galway])
- Bell family
- Bellingham, Daniel, fl. 1660s
- Bellingham, Edward, Sir, c.1507?–1550
- Bellingham family
- Bellings (Bealing), Richard, c.1603–1677
- Bellings, Richard, 1603?-1677
- Bellings, Richard, d. 1677
- Bellings, Richard, Sir, 1626-1716
- Bellings family
- Belloc, Bessie Rayner, 1829-1925
- Belloc, Joseph Hilaire Pierre René, 1870-1953
- Bellori, Giovan Pietro, 1613-1696
- Belmore, Armar Lowry-Corry, Earl, 1740-1802
- Belshaw, Mary, 1879-1960
- Belton, Liam, b.1947
- Belton, Patrick, 1884-1945
- Belton, Patrick, 1926-1987
- Beltz, George Frederick, 1774-1841
- Benda, Julien, 1867-1956
- Bender, Albert, 1866-1941
- Benedeit, fl. 1120
- Benedetti, Sergio, b.1942
- Benedict, Julius, 1804-1845
- Benedict, Julius, Sir, 1804-1885
- Benedict, saint, c.480-547
- Benedict Biscop, c.628-690
- Benedict XIV, pope, 1675-1758
- Benedict XV, pope, 1854-1922
- Benedict XV, Pope, 1854-1922
- Benedict XVI, Pope, 1927-
- Benen, Saint
- Benignus
- Benjamin, Walter, fl. 1936
- Benn-Walsh, John, Sir, fl. 1864
- Bennet, Henry, 1st Earl of Arlington, 1618-1685
- Bennet, Henry, earl of Arlington, 1618-1685
- Bennet, Henry, Earl of Arlington, 1618-1685
- Bennet, Louie, 1870-1956
- Bennet family
- Bennett, Art, 1793-1879
- Bennett, Arthur
- Bennett, Arthur, 1793-1879, see Mac Bionaid, Art, 1793-1809
- Bennett, Edward Hallaran, 1837-1907
- Bennett, George, 1822?-1900
- Bennett, George, 1822?-1900;
- Bennett, Henry, 1st Earl of Arlington, 1618-1685
- Bennett, James
- Bennett, James Gordon, 1841-1918
- Bennett, Jim
- Bennett, John H., 1862-1935
- Bennett, Lily, d.1922
- Bennett, Louie, 1870-1956
- Bennett, Louis, 1870-1956
- Bennett, Louisa ('Louie'), 1870-1956
- Bennett, Louise, 1870-1956
- Bennett, Stephen Allen, 1868-1934
- Bennett, Thomas Westropp, d. 1962
- Bennett, William, 1741?-1797
- Bennett family
- Benn family
- Bennis, Elizabeth, 1725-1802
- Bennis, George Geary, d. 1866
- Bennis, Henry, 1800-1872
- Benson, Charles William, 1836-1919
- Benson, Francis Robert, Sir, 1858-1939
- Benson, Godfrey Rathbone, 1st Baron Charnwood, 1864–1945
- Benson, John, Sir, 1812-1874
- Benson, Wilson, 1821 - 1911
- Bentham, Jeremy, 1748-1832
- Bentham, Jeremy, 1748-1832 ; Smith, Adam, 1723-1790 ; Wakefield, Edward Gibbon, 1796-1862
- Bentinck, George, Lord (1802-1848)
- Bentinck, Lord William Henry Cavendish- [known as Lord William Bentinck], 1774–1839
- Bentinck, William Henry Cavendish, 3rd duke of Portland, 1738-1809
- Bentivoglio, Guido, cardinal, 1577-1644
- Bentley, James, d. 1849
- Bentley, William Wellington, 1826-1896
- Bentley family
- Beoc, Saint, d. 585
- Berach, Abbot and saint, d.595
- Berach, Saint, d. 595
- Berach, saint, late 6th/early 7th cent.
- Beranger, Gabriel, 1729?-1817
- Beranger, Gabriel, 1729?-1817,
- Beranger, Gabriel, c.1729-1817
- Beranger, Gabriel, fl. 1730-1817
- Berchán (6th cent.?),
- Beresford, Denis Robert Pack, 1864-1942
- Beresford, George de la Poer, 1735-1800
- Beresford, George Thomas, Lord, 1781-1839
- Beresford, George Thomas, Lord 1781–1839
- Beresford, Harriet (née Schutz), Lady, c.1788-1860
- Beresford, John, fifth marquis of Waterford, d.1895
- Beresford, John Graham Hope de la Poer, 5th Baron Decies, 1866-1944
- Beresford, Louisa, Marchioness of Waterford
- Beresford, Marcus de la Poer, 1771-1783
- Beresford, Marcus Gervais, 1801-1885
- Beresford, Maurice Warwick, 1920-2005
- Beresford, William Carr, 1768–1854
- Beresford family
- Beresford [née Stuart], Louisa Anne, marchioness of Waterford, 1818-1891,
- Berford family
- Bergin, Ellen (née Lalor), c.1802-1876
- Bergin, Francis, 1855-1925
- Bergin, James, c.1788-1876
- Bergin, John1901?-1918
- Bergin, Liam Diarmuid, fl. 1944-1985
- Bergin, Osborn, 1873-1950
- Bergin, Osborn J., 1873-1950
- Bergin, Osborn Joseph, 1873-1950
- Bergin, Osborn Joseph, 1873–1950
- Bergin, Paddy, 1913-1991
- Bergin family
- Berkeley, George, 1685-1753
- Berkeley, George, bishop, 1685-1753
- Berkeley, George, bishop, 1685-1753 ; Browne, Peter, bishop, d. 1735
- Berkeley, George, Bishop, 1685-1753 ; Johnston, Joseph, 1890-1972
- Berkeley, George, bishop, 1685-1753 ; Swift, Jonathan, 1667-1745
- Berkeley, George, bishop, 1685-1753,
- Berkery, Liam, d.1953
- Berlioz, Louis Hector, 1803-1869
- Berman, Hannah, 1885-1955
- Bermann, Richard Arnold, 1883-1939
- Bermingham, John, earl of Louth, c.1290-1329
- Bermingham, Margaret
- Bermingham, Meiler de, 2nd baron of Athenry, d.1252
- Bermingham, P. J., 1872-1975
- Bermingham, Robert, Lord Clements, 1805-1839
- Bermingham, Thomas, fl 1800-1855
- Bermingham, Walter de, fl. 1332
- Bermingham, William, Sir, baron of Carbury
- Bermingham, William de, d. 1332
- Bermingham, Willie, 1942-1990
- Bermingham family
- Bermingham family, barons of Athenry
- Bernal, John Desmond, 1901-1971
- Bernard, Catherine Henrietta (née Boyle), Lady Bandon, 1768–1815
- Bernard, Catherine Henriette (née Boyle), Lady Bandon, 1768-1815
- Bernard, Francis, 1st earl of Bandon and MP, 1755–1830
- Bernard, Francis, 1663-1731
- Bernard, James, 4th earl of Bandon, 1850-1924
- Bernard, James Francis , 4th Earl of Bandon 1850-1924
- Bernard, Jennifer, Lady, 1935-2010
- Bernard, John Henry, 1860-1927
- Bernard, John Henry, Archbishop of Dublin
- Bernard, John Henry, archbishop of Dublin, 1860–1927
- Bernard de Gordon (Bernardus Gordonius, fl. 1270-1330
- Bernard family, Earls of Bandon
- Bernard family, earls of Bandon
- Bernardine of Siena, saint, c.1381-1444
- Bernard of Clairvaux, 1090-1153
- Bernard of Clairvaux, Saint, 1090-1153
- Bernard Shaw, George, 1856-1950
- Bernstein, Morey
- Berrgin, William, fl.1536
- Berry, Henry Fitzpatrick, fl. 1912
- Berry, James, 1842-1914
- Berry, Jo
- Berry, Michael (Mickie), 1926-2014/5
- Berry, Thomas, 1805-1877
- Berryman, John, 1914-1972
- Berwick, Elizabeth, d.1868
- Berwick, Walter, 1800-1868
- Beryn, Brian, fl 1545
- Besant [née Wood], Annie, 1847–1933
- Besant [née Wood], Annie, 1847–1933
- Besnard family
- Best, George, 1946 – 2005
- Best, George, 1946-2005
- Best, Richard Irvine
- Best, Richard Irvine, 1872-1959
- Bestic, Albert A., Capt, 1890-1962
- Betham, Cecilia, 1843-1913
- Betham, William, Sir, 1779-1853
- Betham, William Simon, Sir, 1779-1853
- Betharius (Boetharius), bishop of Chartres, d.623
- Betjeman, John
- Betjeman, John, Sir, 1906-1984
- Betty, William Henry West, 1791-1874
- Beuno, fl c600
- Beuno, Saint, d. 653x9
- Beuys, Joseph, 1921-1986
- Bevan, Emrys, 1941-2004
- Bevan family
- Bew, Paul, 1950-
- Bew, Paul, historian
- Bewerange, Heinrich, 1862-1923
- Bewerunge, Heinrich, 1862-1923
- Bewick, Pauline, 1935-
- Bewick, Pauline, b. 1935
- Bewley, Charles, d. 1969
- Bewley, Charles, d.1969
- Bewley, Charles Henry, 1888-1969
- Bewley, Charles Henry, 1888–1969
- Bewley, Samuel, d. 1837
- Bewley, Thomas, 1843-1889
- Bewley, Victor, 1912-1999
- Bewley family
- Bheldon, Riobard (‘Bob’ Weldon) (c.1834–1914)
- Bhroiméil, Úna Ní
- Bhruaideadha family
- Bhálcar, Seán, -1947
- Bianconi, Carlo, Charles, 1786-1875
- Bianconi, Carlo, Charles, 1786–1875
- Bianconi, Charles, 1786-1875
- Bibby, Albert, 1877-1925
- Bibby, Eileen, b.1924
- Bibby, Thomas, 1799-1863
- Bibby, Thomas Francis (Fr Albert), 1877-1925
- Bibby family
- Bickerstaff family
- Bicknor, Alexander, bishop, d. 1349
- Biddle, Anne B., fl. 1933-1994
- Biddulph, Assheton, 1850-1915
- Biddulph, Lt Col. Middleton Westenra 1849-1926
- Biddulph, Middleton, c.1849-1926
- Biddulph, Middleton Westenra, 1849-1926
- Biden family
- Bieler, Ludwig Josef Georg, 1906–81
- Bigari, Angelo Maria, fl. 1779
- Biggar, Joseph Gillis, 1828-1890
- Biggart, John Henry, 1905-1979
- Bigger, Francis J., 1863-1926
- Bigger, Francis Joseph
- Bigger, Francis Joseph, 1863-1926
- Bigger, Francis Joseph, 1863-1926,
- Biggs, Eileen Mary Warburton, 1879-1950
- Biggs, Eileen Mary Warburton Biggs, née Robinson, 1879-1950
- Biggs, Michael, 1928-1993
- Biggs, Thomas, 1750-1824
- Bigod, Roger (IV), fifth earl of Norfolk c.1245–1306
- Bigod, Roger, 5th Earl of Norfolk and Justiciar of Ireland, c.1245 - c.1306
- Bigod, Roger, earl of Norfolk, c.1245-1306
- Bigod family
- Bilton (Belton) William, fl. 1833
- Binchy, Daniel A., 1899-1989
- Binchy, Daniel Anthony, 1899-1989
- Binchy, Daniel Anthony, 1900-1989
- Bindon, Burton, c.1777-1856
- Bindon, Francis, 1698-1765
- Bindon, Francis, c.1690-1765
- Bindon, Samuel, 1812-1879
- Bindon family
- Bingham, George Charles, 3rd earl of Lucan, 1800-1888
- Bingham, Joseph, d.1915
- Bingham, Richard
- Bingham, Richard, 2nd earl of Lucan, d. 1839
- Bingham, Richard, Sir, 1527/8–1599
- Bingham, Richard, Sir, 1528-1598
- Bingham, Richard, Sir, 1528-1599
- Bingham family (of Co. Mayo)
- Bingham family, earls of Lucan
- Binion family
- Binns, John, 1772-1860
- Binns, Jonathan, 1785-1871
- Biram, Benjamin, 1804-1857
- Birch, family
- Birch, James, c.1812-c.1851
- Birch, Thomas, d. 1797
- Birch, Thomas Ledlie, Rev., d. 1808
- Birch, Thomas Ledlie, Revd, d. 1808
- Birch, William, Captain, 1857-1918
- Birchensha, John, c.1605-1681
- Birchensha, Ralph, fl. 1601
- Birch family
- Bird, Charlie
- Bird, Michael, fl.1921
- Birkett, Mary, d. 1817
- Birmingham, G. A. [i.e. Hannay, James Owen, 1865-1950]
- Birmingham, George A. (pseud.) see Hannay, James Owen, 1865-1950
- Birmingham, John, d. 1844
- Birmingham, John, d. 1884
- Birmingham, Michael Blake, J.P., 1815-1851
- Birmingham family
- Birmingham Family
- Birrell, Augustine, 1850-1933
- Bischoff, Bernard, 1902-1991
- Bischoff, Bernhard, 1902-1991
- Bischoff, Bernhard, 1906-1991
- Bischoff, Bernhard, 1906-1991)
- Bishop, Des, 1940-
- Bishop, Henry Rowley, 1786-1855
- Bismarck, Otto Eduard Leopold, prince von, 1815-1898
- Bisset, William, Bishop of Raphoe, 1758-1834
- Bissett, Hilda, 1889-1974
- Black, Alexander, d.1810
- Black, Donald Taylor, 1951-
- Black, Jeremy
- Black, John, 1753-1836
- Black, John, fl. 1766
- Black, John III, fl 1765
- Black, Mollie, fl.1916
- Black, Patrick
- Black, Samuel, 1762-1832
- Black, William George, fl. 1878
- Blackadder, Charles Guinand, 1869-1921
- Blackall, Samuel Wensley, Sir, 1809-1871
- Blackall/Blackhall family
- Blackall family
- Blackburne, Francis, 1782-1867
- Blacker, William, 1777-1855
- Blacker Douglas family
- Blacker family
- Blacker family, fl. 1798
- Black family
- Blackhall, Thomas, Sir, fl. 1761-1796
- Blackham, Robert James, 1868-1951
- Blacking, John Anthony Randoll, 1928–1990
- Blackley, Travers Robert, 1867-1938
- Blackmore, Gillie, 1904-
- Blackmore, John, 1867-1917
- Blackmore family
- Blackney family
- Blackshaw, Basil,
- Blackstock, Cindy, 1964-
- Blackwell, James Bartholomew, 1764-1820
- Blackwell, Middleton Joseph O'Malley, 1913-1993
- Blackwood, Frederick Temple Hamilton-Temple-, 1st marquess of Dufferin and Ava, 1826-1902
- Blackwood, Hariot Georgina Hamilton-Temple-, marchioness of Dufferin and Ava (1843–1936)
- Blackwood, Helen, Lady Dufferin, née Sheridan, d.1867
- Blackwoods, William ; Peel, Robert, Sir, 1788-1850
- Blaghd, Earnán, see Blythe, Ernest, 1889-1975
- Blain, Angeline Kearns, 1938-
- Blair, Anthony Charles Lynton, 1953-
- Blair, Eric Arthur, 1903-1950
- Blair, James, 1789-1841
- Blair, Lambert, 1767-1815
- Blair, Patrick, 1712-1781
- Blair, Robert, 1593-1666
- Blair, Robert, 1593–1666
- Blair, Tony, 1953-
- Blake, Anthony, archbishop of Armagh, 1704?-1787
- Blake, Anthony, Archbishop of Armagh, 1758-1787
- Blake, Bill, c.1886-1970
- Blake, Caroline, (née Burke), 1835-1919
- Blake, Daniel, d. 1867
- Blake, Edward (1833-1912)
- Blake, Edward, 1833-1912
- Blake, Eunan ('Busty')
- Blake, George, 1922-
- Blake, John Henry, d. 1882
- Blake, Joseph Henry, 3rd Baron Wallscourt of Ardfry, 1797-1849
- Blake, Joseph Henry, Third Baron Wallscourt of Ardfry, 1797-1849
- Blake, Martin, fl. 1650-1680
- Blake, Michael, 1775–1860
- Blake, Michael, bishop of Dromore, 1775–1860
- Blake, Michael, fl. 1826
- Blake, Richard, 1868-1937
- Blake, Richard T. (1868-1937)
- Blake, Robert Norman William, Baron Blake, 1916-2003
- Blake, William, 1757-1827
- Blake famil
- Blake family
- Blake family of Ballyglunin
- Blake fitz Andrew, Martin, fl. 1652
- Blakeney, William, 1st Baron, 1672-1761
- Blakeney, William, 1672-1761
- Bland, Lilian, 1878-1971
- Bland, Lilian, 1878-1971,
- Bland, Lilian Emily, 1878-1971
- Blaney, James, 1880-1912
- Blaney, Neil, d. 1995
- Blaney family
- Blaquiere, John, Sir, fl. 1772
- Blathmac, fl. 8th cent.
- Blaugdone, Barbara, 1609-1704
- Blayney (Blainey, Blaney), Edward, 1st Baron Blayney, c.1570-1629
- Blayney, Neil John, ? - 1919
- Bleakley, David, 1925-
- Bleakley, David Wylie, 1925-2017
- Bleeks, Albert, 1901-1984
- Blennerhassett, Clara Anne, 1812-1878
- Blennerhassett, Richard
- Blennerhassett family
- Blessington, Marguerite, née Power, 1789-
- Blessington, Marguerite Gardiner, countess of, 1789-1849
- Blest, William C., 1800-1884
- Bligh, Edward Henry Stuart, 7th earl of Darnley, 1851-1900
- Bligh, Frederick, Captain
- Bligh, Nin (née Duggan), d.2014
- Bligh, William, 1754-1817
- Bligh family
- Bligh family, Earls of Darnley
- Bloch family
- Blood, May, Baroness
- Blood, May, Baroness, 1938-2022
- Blood, Thomas, 1618?-1680
- Blood, William, d. 1831
- Bloodaxe, Erik, d. 954
- Blood family
- Bloomer, Gertrude, 1879-1916
- Bloomfield, John Caldwell, 6th Baronet of Castle Caldwell, 1823-1855
- Bloomfield, Kenneth, Sir
- Blore, Edward, 1787-1879
- Blossett, Julia Ann, fl.1735-1760
- Blount, Charles, 8th baron Mountjoy and earl of Devonshire, 1563-1606
- Blount, Charles, earl of Devonshire and 8th baron Mountjoy, 1563-1606
- Blow, Daniel, 1718-1810
- Blow, James, d. 1759
- Blowers, Frankie, 1919-1973
- Blowick, John, 1888-1972
- Bloxham, Elizabeth, 1877-1962
- Bloxham, Elizabeth, 1878-post 1952
- Bloxham family
- Blundell, Mary, 1859–1930
- Blundell family
- Blunden family
- Blunt, Anne Isabella Noel (née King), 1837-1917
- Blunt, Anne Isabella Noel (née King). 1837-1917
- Blunt, Theresa Lennon, 1931-
- Blunt, Wilfrid Scawen, 1840-1922
- Blythe, Ernest
- Blythe, Ernest (de Blaghd, Earnán), 1889-1975
- Blythe, Ernest, 1889-1975
- Blythe, Ernest 1889-1975
- Bnight, James, fl. 1922
- Boate, Arnold, fl.1636-1644
- Boate, Edward Wellington, 1822-1871
- Boate, Gerrard, fl.1644-1650
- Boazio, Giovanni Batista, fl.1588-1606
- Bocchi, Lorenzo, fl. 1700-1725
- Bodart, Anna Maria (Ada), 1874-1936
- Bodden, Brian, d. 1961
- Boddington, M.R.
- Bodkin, Christopher, bishop, d. 1572
- Bodkin, M. McDonnell, 1856-1933
- Bodkin, Martin, fl. 1703-1714
- Bodkin, Michael, fl.1881-1900
- Bodkin, Thomas, 1887-1961
- Bodkin, Thomas Patrick, 1887-1961
- Bodkin family
- Bodley, Josias, Sir, c.1550–1617
- Bodley, Seóirse, 1933-
- Boeddicker, Otto, 1853-1937
- Boethius, Anicius Manlius Torquatus Severinus, c. 480-526
- Bogan, Louise
- Boggs, Robert Andrew, 1908-1989
- Bogle, Eric, b.1944
- Bohan, Ger, d.2007
- Bohan, Seán, 1924-2008
- Boileau family
- Boisil, Saint, d. 664
- Boland, Eavan,
- Boland, Eavan, 1944-
- Boland, Frederick Henry, 1904-1985
- Boland, Gerald, 1885-1973
- Boland, Harry, 1887-1922
- Boland, Henry James (‘Harry’), 1887-1922
- Boland, Henry James (‘Harry’), 1887–1922
- Boland, John, Fr. 1782-1835
- Boland, John James, 1944–2000
- Boland, John Mary Pius, 1870-1958
- Boland, Kevin, 1917-2001
- Boland , Patrick, 1840-1877
- Boland family
- Boland family (of Santa Cruz, Bolivia)
- Bolaño Ávalos, Roberto, 1953-2003
- Bole (Bull), John, O.S.A., archbishop, a.1425-1471
- Bole, John, bishop, d. 1471
- Boles, Abigail, 1684-1752
- Bolger, Bryan, 1792-1834
- Bolger, Bryan, c.1758-1834
- Bolger, Dermot, 1959-
- Bolger, Dermot, 1959-,
- Bolger, Dermot, 1959-,,
- Bolger family
- Bolivar, Simón, 1783-1830
- Bolland, Jean
- Bolton, Geoffrey
- Bolton, Richard, Sir, d. 1548
- Bolton, Theophilus, bishop, 1677x8-1744
- Bolton, Thomas, 1658-1736
- Bolton family
- Bolívar, Simón, 1783-1830
- Bonaparte, Elizebeth Patterson, 1785-1879
- Bonaparte, Lelitia, 1804-
- Bonar Law, Andrew
- Bonaventure of Bagnoregio, the religious name of Giovanni di Fidanza, c.1217-1274
- Bond, Maria Louisa, c.1808-c1898
- Bond, Oliver, 1760-1798
- Bones, James, 1766-1841
- Bonham, James Butler, 1807-1836
- Boniface, Saint, 672x5?-754
- Bonn, Moritz Julius, 1873-1965
- Bono
- Boole, George, 1815-1864
- Boole, George 1815-1864
- Boole, Lucy, chemist, 1862-1905,
- Boole family
- Boole Stott, Alicia, mathematician, 1860-1940,
- Boorde, Andrew, 1490-1459
- Booth, Evelyn Mary, 1897-1988
- Booth, James, 1806-1878
- Booth, John, fl. 1801-1817
- Booth, Robert, Sir, 1626-1681
- Bor, Thomas Humphrey, 1892-1916
- Boran, Nixie, 1903-1971
- Borck, Jerekias von, fl. 1740
- Borgstrom, Carl, 1909-1986
- Borlase, Edmund, c.1620-1682
- Borlase, Edmund, c.1620-1682,
- Borra, Battista, 1713-1770
- Borrell, Henry, 1795-1851
- Borrowes, Erasmus Dixon, 1799-1866
- Borrowes, Erasmus Dixon, Sir, 1799-1866
- Borumborad, Achmet, fl. 1760s
- Bosanko, Marilyn S. McCleary
- Bose, Subhas Chandra, 1897-1945
- Bose, Subhas Chandra, 1897–1945
- Boswell
- Boswell, James, 1740-1795
- Boswell family
- Boucher Beug, Katherine,
- Boucicault, d. 1890
- Boucicault, Dion, 1820-1890
- Boucicault, Dion Lardner, 1820-1890
- Bouhereau, John, 1685-1726
- Bouhéreau, Elie, 1643-1719
- Bouhéreau, Élie, 1643-1719
- Boulger, Edward Vaughan, 1848-
- Boulter, Hugh, archbishop of Armagh, 1672-1742
- Boulter, Hugh, d. 1742
- Boundy, Martin, c.1824-1892
- Bourbaki, Nicolas
- Bourchier, James David
- Bourdieu, Pierre
- Bourdieu, Pierre, 1930-2002
- Bourke, Brian
- Bourke, Brian, b. 1936
- Bourke, Charles, Revd, 1765-1820
- Bourke, Dermot Robert Wyndham-, 7th earl of Mayo, 1851–1927
- Bourke, Jim, d.2017
- Bourke, John, 9th Earl of Clanricarde, Baron Bophin, 1642-1722
- Bourke, Marcus, 1927-2010
- Bourke, Marcus, historian, 1927-
- Bourke, Michael, d.1916
- Bourke, Richard, fl 1640-1650
- Bourke, Richard, Sir, 1777-1855
- Bourke, Richard Southwell, 6th earl of Mayo, 1822-1872
- Bourke, Richard Southwell, 1822–1872 chief secretary for Ireland and 6th earl of Mayo
- Bourke, Sean
- Bourke, Theobald (Tibbot) MacWalter Kittagh, later the MacWilliam Bourke, d.1604 ; MacWilliam Burke family ; O'Donnell, 'Red' Hugh (Ó Domhnaill, Aodh Ruadh), c.1572-1602
- Bourke, Thomas, fl. 1643–4
- Bourke, Thomas Francis, 1840-1889
- Bourke, Ulick J., 1829-1887
- Bourke family
- Bourke family, earls of Mayo
- Bourke family ; O'Malley, Grace, 1530-1603 ; Bourke, Theobald (Tibbot-ne-long), Viscount Mayo, 1567-1629
- Bourn, William Bowers II, 1857-1936
- Bourne, Charlie
- Bourne, Francis Alphonsus, cardinal, 1861-1934
- Bourne family
- Boushie, Colten, 1993-2016
- Bovet, Marie-Anne de, 1855-19.?
- Bowden, C. T. (Charles Topham)
- Bowe, family
- Bowe, family,
- Bowe, Nicola Gordon, 1948-2018
- Bowen, Alice, d.1783
- Bowen, Charles Synge Christopher, Baron Bowen, judge, 1835–1894
- Bowen, Elizabeth, 1899-1973
- Bowen, Elizabeth Corothea Cole, 1899-1973
- Bowen, Elizabeth Dorothea Cole, 1899-1973
- Bowen, Elizabeth Dorothea Cole, 1899–1973
- Bowen-Colthurst, John Colthurst, 1880-1965
- Bowen-Colthurst, John Colthurst, 1880-1965 : Sheehy-Skeffington, Francis, 1878-1916
- Bowen family
- Bowens family
- Bower, John, 1818-1886
- Bower, Walter, 1385-1449
- Bowers, John, Sir, 1691-1767
- Bowes, family
- Bowes, Leo, b. 193?
- Bowler, Noel, b. 1978
- Bowles, Joan, 1942-2002
- Bowles, Mary
- Bowles, Michael, c.1740-1799
- Bowles, William (Guillermo), 1705?/1720?–1780
- Bowles, William, 1720?–1780
- Bowles family
- Bowman, Alexander, 1854-1924
- Bowman, Alexander, d. 1924
- Bowtell, Elizabeth, 1648x9-1714x5
- Bowyer, William, 1699-1777
- Boxwell, John, fl. 1806-1840
- Boxwell, Rebecca Anne, b. c 1808, d. 1864
- Boxwell family
- Boyar (alias Bradley), John, fl.c1590-1604
- Boyce, Eamonn
- Boyce, Edward, 1862-1941
- Boyce, John, 1810-1864
- Boyce, Samuel, fl. 1820-1826
- Boycott, Charles Cunningham, 1832-1897
- Boycott, Charles Cunningham, 1832–97
- Boyd, Alexander (‘Alex’), fl.1902–1923
- Boyd, Andrew, 1921-2011
- Boyd, Baptist, fl.1697-1737
- Boyd, Belle, see Boyd, Isabella Marie, 1844-1900
- Boyd, Charles K., 1892-1976
- Boyd, D. C. (David Culbert)
- Boyd, David C.
- Boyd, David Culbert, fl.1929
- Boyd, Hugh, d. 1765
- Boyd, Hugh Alexander, 1907-1996
- Boyd, Isabella Marie, 1844-1900
- Boyd, John, 1789-1862
- Boyd, John, 1912-
- Boyd, John, 1912-2002
- Boyd, John, b. 1957
- Boyd, John McNeil, 1812-1861
- Boyd, John St Clair, 1858-1918
- Boyd, Mark Alexander, 1563-1601
- Boyd, Mary Rosalie, 1880-1960
- Boyd, Mossum, d. 1793
- Boyd, Pattie, b.1944
- Boyd, Robert, 1805-1831
- Boyd, Trevor Dempster, 1931-2010
- Boyd, William, 1742-1791
- Boyd Barrett, Edward, 1883-1966
- Boydell, Brian, 1917-2000
- Boyd family
- Boylan, Andrew, 1842-1910
- Boylan, Andrew, bishop, fl. 1910
- Boylan, Eugene 1904-1964
- Boylan, Henry, 1911-
- Boylan, Jack, fl. 1860-1892
- Boylan, Lena, 1917-2000
- Boylan, Lena, d. 2000
- Boylan, Nicholas, 1795-1852
- Boylan, Patrick Joseph, 1879-1974
- Boylan, Peter 1950-
- Boylan, Seán
- Boylan family
- Boylan John, 1821-1899
- Boyle, (neé Morwood), Elizabeth, 1908-1995
- Boyle, Alice, Sara, Lettice, Joan, Katherine, Dorothy and Mary
- Boyle, Alice, Sara, Lettice, Joan, Katherine, Dorothy and Mary ; Conyngham, Katherine, Jane and Mary ; Gore-Booth, Constance and Eva ; Morgan, Lady Sydney and Clarke, Lady Olivia (Owenson) ; Parnell, Anna and Fanny ; Shackleton, Deborah, Margaret, Mary and Sarah ; Sheehy, Hanna (-Skeffington), Margaret (Culhane), Mary (Kettle) and Kathleen (Cruise O'Brien) ; Yeats, Susan and Elizabeth ; Ó Domhnaill, Nualaidh, Máire and Mairghréad
- Boyle, Alicia, 1908-1997
- Boyle, Catherine, countess of Cork, c.1588-c.1630
- Boyle, Charles, 4th earl of Orrery and 1st baron Boyle of Marston, 1676-1731
- Boyle, Conell, d. 1898
- Boyle, Elizabeth, 1908-1995
- Boyle, Finbar, 1951-2018
- Boyle, Finbar1951-2018
- Boyle, George, 1936-
- Boyle, Henry, 1st earl of Shannon, 1681x7-1764
- Boyle, Henry, 1st earl of Shannon, 1684-1764
- Boyle, Henry, 1st earl of Shannon, 1684–1764
- Boyle, Henry, 3rd earl of Shannon, 1771-1842
- Boyle, Hugh, 1819-1899
- Boyle, Ina, 1889-1967
- Boyle, Joe, 1867-1923
- Boyle, John (1777-1849)
- Boyle, John, 5th earl of Orrery, 1707-1762
- Boyle, John, fl. 1876
- Boyle, John Charters
- Boyle, John William, 1914-1998
- Boyle, Kate (née Treacy), b.1869
- Boyle, Leonard Eugene, 1923-1999
- Boyle, Mary
- Boyle, Michael, 1609-1702
- Boyle, Michael, archbishop of Armagh, 1615?–1702
- Boyle, Michael, b. 1944
- Boyle, Michael, Church of Ireland archbishop of Armagh, 1615?–1702
- Boyle, Murrough, 1st Viscount Blessington, 1648-1718
- Boyle, Néillí (Neilly), 1889-1961
- Boyle, Private J. (12589), Scottish Rifles
- Boyle, Richard, 1st earl of Burlington and 2nd earl of Cork, 1612-1698
- Boyle, Richard, 1st earl of Cork (1566–1643)
- Boyle, Richard, 1st earl of Cork, 1566-1643
- Boyle, Richard,1st earl of Cork, 1566-1643
- Boyle, Richard, 1st earl of Cork, 1566–1643
- Boyle, Richard, 2nd earl of Shannon, 1727–1807
- Boyle, Richard, 2nd earl of Shannon, 1728-1807
- Boyle, Richard, 3rd earl of Burlington and 4th earl of Cork, 1694-1753
- Boyle, Richard, 3rd earl of Burlington and 4th earl of Cork, 1695-1753
- Boyle, Richard, 1566-1643 : Boyle family
- Boyle, Richard, 1694-1753
- Boyle, Richard 1st earl of Cork, 1566-1643
- Boyle, Robert, 1627-1691
- Boyle, Robert, 1627-1691; Jones, Katherine, Lady Ranelagh, 1615-1691
- Boyle, Robert, Sir, 1627-1691
- Boyle, Robert 1627-1691
- Boyle, Roger (Lord Broghill), 1621–1679
- Boyle, Roger, 1st earl of Orrery, 1621-1679
- Boyle, Roger, 2nd Baron Broghill ; Sackville, Mary
- Boyle, Roger, 1621-79
- Boyle, Roger, 1621–79, 1st Baron Broghill and 1st earl of Orrery
- Boyle, Roger, 1621–79, Baron Broghill and 1st earl of Orrery
- Boyle, Roger, baron Broghill and 1st earl of Orrery, 1621-1679
- Boyle, Roger, Lord Broghill, 1st Earl of Orrey 1621-1679
- Boyle, William (Bill) James, 1893-1948
- Boyle, William, 1853-1923
- Boyle family
- Boyle family, Earls of Shannon
- Boyle O'Reilly, John, 1844-1890
- Boyse, Joseph, fl. 1728
- Boyse, Thomas, 1782-1854
- Boyse, Tom, d. 1854
- Brabazon, Edward, 4th earl of Meath, 1638-1707
- Brabazon, John
- Brabazon, John, 1828-1914
- Brabazon, Reginald, 12th earl of Meath, 1841-1929
- Brabazon, Wallop, 1770-1831
- Brabazon, William, 3rd earl of Meath, c.1635-1685
- Brabazon family
- Bracken, Brendan, 1901-1958
- Bracken, Brendan, 1901-1958 ; Churchill, Winston, 1874-1965
- Bracken, Brendan, 1901–1958
- Bracken, Brendan,1901–1958
- Bracken, Brendan Rendall, viscount Bracken, 1901-1958
- Bracken, Joseph K., 1852-1904
- Bracken, Joseph K., 1852–1904
- Bracken, Joseph Kevin, 1852-1904
- Bracken, Niall Henry
- Bracken, Peadar, 1887-1961
- Bracken, Peter Francis (Peadar), 1887-1961
- Bracken, William, fl.1883
- Bracken family
- Braddell, John W., 1820-1862
- Braddell family
- Bradlaugh, Charles, 1833-1891
- Bradley, Gerry
- Bradley, John, 1954-2014
- Bradley, Joshua, fl.1818-1839
- Bradley, Richard, tailor in Dublin, fl. 1700
- Bradley, William J., 1892-1981
- Bradshaw, Brendan, historian
- Bradshaw, Henry, 1831-1886
- Bradshaw, Henry, 1831–1886
- Bradshaw, Henry, d.1886
- Bradshaw, Paris Augustus, 1764-1854
- Bradshaw, William, 1830-1861
- Bradshaw family
- Bradstreet, Dudley, 1711-1763
- Bradstreet family
- Brady (O'Brady) family
- Brady, Alicia, ?-1913
- Brady, Bernard (Barney), 1893-1965
- Brady, Bernard, O.P., fl. 1800
- Brady, Catherine, 1788-1858
- Brady, Eddie, d.2019
- Brady, Eilís, 1927-2007
- Brady, Eugene, fl. 1767
- Brady, George, 1832-1921
- Brady, Hugh (1768-1851)
- Brady, Hugh, bishop of Meath, c.1527-1584
- Brady, James
- Brady, James, 1920- ; Stringer, Frank, 1920-
- Brady, James, fl. 1821-1895
- Brady, James, fl. 1940-1949
- Brady, James D. (1843-1900)
- Brady, John, 1800-1871
- Brady, John, d.1809
- Brady, John, d.1963
- Brady, John, fl. 1821-1895
- Brady, John Green, fl. 1870
- Brady, Lawrence (Lar), fl.1921-1973
- Brady, Liam, d.2013
- Brady, Margery, d.2016
- Brady, Mary Janes josephine, fl. 1915
- Brady, Michael, 1785-1840
- Brady, Michael, 1868-1954
- Brady, Michael Augustine, 1883-1973
- Brady, Natlu, 1933-
- Brady, Richard, bishop, 1530-1607
- Brady, Seán, archbishop of Armagh, 1954-
- Brady, William, 1829-1878
- Brady family
- Brady family (of Argentina)
- Braithwaite (Brannigan), Richard, c.1870-?
- Bramhall, John (bap. 1594, d. 1663)
- Bramhall, John, 1594-1663
- Bramhall, John, archbishop, 1594-1663
- Bramhall, John, bishop, 1594-1663
- Bramhall, John, bishop, 1594-1663,
- Bran
- Bran, son of Fáelán and overking of Leinster 835–8, d. 838
- Branagan, Desmond, 1918-2016
- Branagan, Honora, fl. 1891-1952
- Branagan, Thomas, fl. 1839
- Brandt, Muriel ; Davidson, Lilian Lucy ; Davis, Thomas Osborne (1814-1845)
- Brandub mac Echach
- Brangan, Eileen, Dr.
- Braniff, Daniel Ignatius, 1911-1999
- Branigan, James (Lugs), 1910-1986
- Branigan, James Christopher, 1910-1986
- Branigan, Larry, 1904-1990
- Branigan, Patrick, Sir, 1906-2000
- Brannan family
- Brannigan family
- Bransfield, Edward
- Branwell, Richard, b.1920
- Brasbie, Denis Leyne, fl. 1810
- Brash, Richard Rolt, 1817-1876
- Brasher, Chris, 1928-2003
- Brassington, Richard, fl. 1809-1814
- Braughall, Benjamin Joseph, 1776-1847
- Brawders, William
- Bray, Mary, 1890-1973
- Bray, Owen, fl 1750
- Bray, Philip, 1948-
- Bray, Thomas, 1749-1820
- Bray, Thomas, archbishop, 1749-1820
- Bray, Thomas, bishop, 1749-1820
- Brayden, William J.H., 1865-1933
- Brayden, William John Henry, 1865-1933
- Brayden, William John Henry, 1865-1933,
- Brayne, Richard, fl.1687-1738
- Brayton (neé Boylan), Teresa C., 1868-1943
- Brayton, Teresa C., 1868–1943
- Brazil family
- Breacán (Brecan), saint, c 5th/6th century
- Breakey, John, b. 1932
- Breakey, William, fl. 1847
- Breakspear, Nicholas, Pope Adrian IV, c.1100-1159
- Breathnach, Breandán, 1912-1985
- Breathnach, Brendán, musician
- Breathnach, Diarmuid, 1930-
- Breathnach, Diarmuid, 1930- ; Ní Mhurchú, Máire
- Breathnach, Micheál, (Welsh Óg) ; Ó Murchú, Tadhg
- Breathnach, Micheál, 1881-1908
- Breathnach, Micheál, 1886-1987
- Breathnach, Micheál, fl. 1886
- Breathnach, Micheál, Revd, fl. 1848
- Breathnach, Nioclás, 1912-2002
- Breathnach, Pádraic, 1942-
- Breathnach, Pádraic. 1942-
- Breathnach, Pádraig T., fl. 1934-1935
- Breathnach, Pól, d. 1941
- Breathnach, Séamas, 1872-1937
- Breatnach, Pádraig A.
- Breatnach, Pól, 1885-1941, see Walsh, Paul, Revd, 1885-1941
- Breatnach, R. A., 1911-2001
- Breatnach, Risteard Breasalach, 1914-199
- Breatnach, Séamas, 1887-1985
- Brecán, Saint, fl. 500
- Breen, Dan, 1894-1969
- Breen, Donal, Dean of Ferns, 1588-1655
- Breen, Hugh, 1791-1848
- Breen, Hugh, 1824-
- Breen, James, 1832-1871
- Breen, John, fl.1948-1949
- Breen, Lawrence
- Breen, Margaret, d. 1975
- Breen, Mary, d. 2000
- Breen, Muriel, 1899-
- Breen, Paddy, fl.1948-
- Breen, Patrick, 1795 - 1968
- Breen, Patrick, fl. 1844-1846
- Breene, Molly, 1919-
- Breen family
- Brehun, Maurice, 1588-1633
- Brehun, Thomas, 1582-1647
- Brenan, Henry Francis, fl. 1907-1944
- Brenan, John, 1768-1830
- Brenan, John, archbishop of Cashel, c.1625-1693
- Brenan, John, bishop, b. 1625, d. in or after 1692
- Brenan, Michael John, 1780-1847
- Brenan, Patrick, d.1797
- Brenan, Samuel Arthur, 1837-1908
- Brenan family
- Brendan (Brénainn) of Birr (d. 565/73)
- Brendan (Brénainn) of Clonfert (d. 577/83)
- Brendan, Saint, 484-577
- Brennan (née Tynan), Betty, d.2020
- Brennan, Austin, fl.1917-1919
- Brennan, Charles, Fr, 1875-1937
- Brennan, Colm, b. 1943
- Brennan, Francis d. 1799
- Brennan, James, 1919-1993
- Brennan, John, 1768-1830
- Brennan, John, fl. 1799
- Brennan, Joseph, 1887-1976
- Brennan, Louis, 1852-1932
- Brennan, Maeve
- Brennan, Maeve, 1916-1993
- Brennan, Maeve, 1917-1993
- Brennan, Maeve, 1917-1993,
- Brennan, Malachy, 1877-1967
- Brennan, Margaret M., 1883-1937
- Brennan, Mary (née Marshall), 1907-1993
- Brennan, Michael, 1936-2020
- Brennan, Michael George, 1839-1871
- Brennan, Micheál, fl.1917-1919
- Brennan, Patrick, fl.1917-1919
- Brennan, Private Anthony ; Dowling, Reverend Edward ; Prior-Wandersforde, Lieutenant Christopher (d.1917)
- Brennan, Robbie, d.2002
- Brennan, Robert, 1881-1964
- Brennan, Robert, d. 1964
- Brennan, Seamus (Fr Stan), 1929-2012
- Brennan, Stoney
- Brennan, Thomas A., 1938-2016
- Brennan, William 'Willie'
- Brennan, William J., Jr, 1906-1997
- Brennan-Whitmore, William James
- Brennand-Woods, Michael
- Brennan family
- Brennan family (of Co. Meath)
- Breogán (also spelt Breoghan, Bregon or Breachdan)
- Brereton, Ralph Westropp, 1798?-1858
- Brereton, William, Sir, 1604-1661
- Brereton family
- Breslin, Cormac, 1902-1978
- Breslin, J.J., b. 1867
- Breslin, Patrick, b. c 1907, d. 1942
- Breslin, Thomas, d.1916
- Brett, Alfred,
- Brett, Charles, 1928-
- Brett, Charles, Sgt, 1815-1867
- Brett, Charles Anthony,
- Brett, Charles Edward Bainbridge, Sir, 1928-2005
- Brett, Charles Henry,
- Brett, Jasper, fl. 1721
- Brett, William, fl. 1912-1922
- Brett family
- Brettridge, Roger, fl. 1683
- Brew, Margaret W., fl.18?
- Brewitt, Frank, fl. 1922
- Brewster, Abraham, 1796-1874
- Brezina, Barbara, fl. 1920-
- Brezini, Josef, d.1958
- Briac, Saint
- Brian Boru, see Brian Bóruma, high-king of Ireland, c.941-1014
- Brian Bórama, see Brian Bóruma, high-king of Ireland, c.941-1014
- Brian Bóruma, high-king of Ireland, c. 941-1014
- Brian Bóruma, high-king of Ireland, c.941-1014
- Brian Bóruma, high-king of Ireland c.941-1014
- Brian Bóruma, high king of Ireland, c.941-1014
- Brian Bóruma, high king of Ireland, c. 941 1014
- Brice, Prudence, b.1797?
- Brice family
- Bricin, Saint, fl. 637
- Bridge, Patten Smith, 1811-1905
- Bridge, William
- Bridge family
- Bridgeman, Joanna (Sister Mary Francis), !813-1888
- Bridle, Kathleen, artist, 1897-1989
- Brie, Charles, 1899?-1993
- Brien family
- Brigdall, Hugh, fl. 1682
- Briggs, Cyril, 1888-1966
- Brighid (Bríd, Bride, Bridget), saint, c.450–c.524, see Brigit, saint, c.450-c.524
- Bright, John 1811-1889
- Brigid (Bríd, Brighid), c451-525
- Brigid of Ireland, Saint, 439x52-524x6
- Brigit (Brighid, Bríd, Bride, Bridget), possibly c.450-524
- Brigit (Brigid of Kildare), St, c. 451-525
- Brigit, Saint
- Brigit, saint (c.450–c.524)
- Brigit, saint, c.450-c.524
- Brigit, saint, c.450-c.524 ; Marcán, saint, c.500-c.550
- Brillat-Savarin, Jean Anthelme, 1755-1826
- Brindle, Robert, bishop, 1837-1916
- Brindle, Robert, fl. 1946
- Brine, James
- Bringhurst, Newell G
- Brinkley, Captain Francis 1841-1912
- Brinkley, John, 1763-1835
- Brinkley, John, 1766?–1835
- Brinkley, John, 1766?–1835,
- Briody, Tom, 1913-2012
- Briscoe, George, 1921-
- Briscoe, Robert Emmet, 1894–1969
- Briscoe family
- Britanus, Didacus, fl. 1107
- Britten, Edward Benjamin, baron Britten, 1913-1976
- Broadley, Alexander Meyrick, 1847-1916
- Brocaidh, Saint
- Brocas, Henry, 1762-1837
- Brocas, Samuel Frederick, c.1792-1847
- Brocas, William, c.1794-1868
- Brocas family
- Brochero de Paz y Anaya, Diego de
- Brockerton, George, 1898-1965
- Brockhaus, Heinrich
- Broderick, Albinia Lucy, Hon.
- Broderick, Albinia Lucy, Hon., c.1861-1955, see Brodrick, Albinia Lucy, Hon., c.1861-1955.
- Broderick, Catherine (née Naughton), c.1830-1901
- Broderick, Charles, bishop, d. 1822
- Broderick, David C., fl. 1859
- Broderick, David Colbert (1820-1589)
- Broderick, John, 1823-2011
- Broderick, John, 1924-1989
- Broderick, Patrick
- Broderick, Peter, 1917-1986
- Broderick, Shane, fl. 1995
- Broderick, Vincent, d.2008?
- Brodie, Terence Benjamin, 1850-1906
- Brodigan, Thomas, d.1849
- Brodrick, Alan
- Brodrick, Alan (c.1655–1728), 1st Viscount Midleton et al.
- Brodrick, Alan, 1st Viscount Midleton, 1660?-1728
- Brodrick, Alan, 2nd viscount Midleton, 1702-1747
- Brodrick, Albinia Lucy, 1861-1955
- Brodrick, Albinia Lucy, Hon., 1861-1955.
- Brodrick, Albinia Lucy, Hon., 1861–1955
- Brodrick, Albinia Lucy, Hon., c.1861-1955
- Brodrick, Charles, 1761-1822
- Broe, Leo, 1899-1965
- Broe family
- Brogan, Patricia Burke
- Bromell, Tony, mayor of Limerick
- Bromwich, Rachel Sheldon, 1915-2010
- Bronte family
- Brontë, Charlotte, 1816-1855
- Brontë, Emily Jane, 1818-1848
- Brontë, Patrick, 1777-1861
- Brontë, Patrick, 1777–1861
- Brontë family
- Brontë [married name Nicholls], Charlotte [pseud. Currer Bell], 1816–1855
- Brooke, Basil Stanlake
- Brooke, Basil Stanlake, 1st viscount Brookeborough, 1888-1973
- Brooke, Charlotte
- Brooke, Charlotte, c. 1740-1793
- Brooke, Charlotte, c.1740-1793
- Brooke, Charlotte, c. 1740-1793,
- Brooke, Charlotte, c1740–1793
- Brooke, Christopher Nugent Lawrence
- Brooke, Henry, 1703?-1783
- Brooke, Peter, 1934-
- Brooke, Raymond Frederick
- Brooke, Rupert Chawner, 1887-1915
- Brooke, Stopford Augustus, 1832-1916
- Brooke, Susanna Marie, 1806-1883
- Brooke, William, fl.1610-1633
- Brooke, William Graham , 1835-1907
- Brooke, William Henry, 1772-1860
- Brooke family
- Brooke ffamily
- Brookerton, George, 1898-1965
- Brooking, Charles, fl. 1728
- Brooks, Christina (née Stafford), 1881-
- Brooks, George R.
- Brooks, Isaiah, 1875- c. 1930
- Brooks, Nicholas
- Brooks, Richard, fl. 1799-1805
- Brophy, Jim, fl. 1954
- Brophy, Martin, Rev., d.1949
- Brophy, Michael, fl. 1895
- Brophy, Patrick J., 1919-1998
- Brosnan, Hugh, 1855-1906
- Brosnan, John, 1914-
- Brosnan, Thomas, c. 1904-1923
- Brosnan, Timothry, Canon, 1823-1898
- Brothers, Richard, d. 1814
- Brothers of Charity
- Brougham, Henry Peter, Baron Brougham and Vaux, 1778-1868 ; Young, Thomas, 1773-1829
- Brougham, John ; Boucicault, Dion, 1820-1890
- Browett family
- Brown, Arthur Whitten, 1886-1948
- Brown, Caroline (née Coddington), 1815-1884
- Brown, Charles Brockden, d. 1810
- Brown, Christy, 1932-1981
- Brown, Daniel Gunn, 1808-1892
- Brown, Daniel Gunn, d. 1868
- Brown, Deborah, 1927-
- Brown, Deborah, b. 1927
- Brown, Ford Madox, 1821-1893
- Brown, Frank, 1880-1960
- Brown, Gerard Baldwin, 1849-1932
- Brown, Godfrey, fl. 1799
- Brown, James, (1842-1917)
- Brown, James, Canadian emigration agent, fl. 1861-1862
- Brown, James Gordon, 1951- ; Cecil, Robert Arthur Talbot Gascoyne-, 3rd Marquess of Salisbury, 1830-1903 ; Chamberlain, Joseph, 1836-1914 ; Disraeli, Benjamin, Earl of Beaconsfield, 1804-1881 ; Gladstone, William Ewart, 1809-1898 ; Lloyd George, David, 1st Earl Lloyd-George of Dwyfor, 1863-1945 ; Peel, Robert, Sir, 1788-1850 ; Powell, John Enoch, 1912-1998 ; Thatcher, Margaret Hilda, Baroness Thatcher of Kesteven, 1925- ; Thatcher, Margaret, 1925-2013 ; Wellesley, Arthur, 1st Duke of Wellington, 1769-1852
- Brown, John, 1800-1859
- Brown, John George "Kootenai", 1839-1916
- Brown, Johnston, 1950-
- Brown, Joseph, fl. 1872
- Brown, June (née McCullagh), d.2015
- Brown, Lancelot 1716-1783
- Brown, Margaret Tobin (Molly)
- Brown, Maurice, fl. 1484
- Brown, Maximilian Ulysses, 1705-1757
- Brown, Peter Robert Lamont, b.1935
- Brown, Stephen, fl. 1420
- Brown, Stephen James Meredith, 1881-1962 ; Sheehan, Patrick Augustine (Canon),1852-1913 ; Smithson, Annie Mary Patricia, 1873-1948
- Brown, Terence, 1944-
- Brown, Thomas, 1786-1847
- Brown, William, 1777-1857
- Brown, William, 1874-1943
- Brown, William, Wells 1814-1884
- Browne, Arthur
- Browne, Arthur, 1756-1805
- Browne, Bernard, 1944-2017
- Browne, Bishop Michael, 1895–1980
- Browne, Catherine (Sister Catherine of St Francis), fl. 1632
- Browne, Charles R., 1867-1931
- Browne, Daniel F., d.1913
- Browne, Denis, 1763-1828
- Browne, Denis, 1763–1828
- Browne, Denis, M.P., 1763-1822
- Browne, Dennis, 1763-1828
- Browne, Dominick
- Browne, Eustace, d. 1724
- Browne, Frances, 1816 - 1879
- Browne, Frances, 1816-1879
- Browne, Frances, 1816–1879
- Browne, Francis, S.J., 1880-1960
- Browne, Francis, SJ, 1880-1960
- Browne, Francis James, 1879-1963
- Browne, Frank, SJ
- Browne, Frederick R., c.1877-1932
- Browne, Geoffrey Henry, 3rd Baron Oranmore, (1861–1927)
- Browne, Geoffrey Henry, 3rd Baron Oranmore, fl. 1927
- Browne, George, bishop, d. 1556
- Browne, George, bishop, d.1556
- Browne, George, count, 1698-1792
- Browne, George Forrest, 1833-1930
- Browne, George J., d. 1858
- Browne, Hannah, d. 1814
- Browne, Henry, fl.1689-1691
- Browne, Henry, Lieutenant, c.1738-1811
- Browne, Henry George Cavendish, fl. 1860-1881
- Browne, Henry Martyn, 1853-1941
- Browne, Henry Ulick, 5th marquess of Sligo, 1831-1913
- Browne, Hester Catherine, 1800-1878, 2nd Marchioness of Sligo
- Browne, Howe Peter, 2nd marquess of Sligo, 1788-1845
- Browne, Howe Peter, fl. 1788-1845
- Browne, Ivor, 1929-
- Browne, James, bishop, d. 1865
- Browne, Jeremy Ulick, 11th Marquess of Sligo 1939–2014
- Browne, J H Balfour, 1845-1921
- Browne, John, 3rd Lord Altamont and 1st Marquess of Sligo, 1756-1809
- Browne, John, 1640-1711
- Browne, John, c.1887-1942
- Browne, John, d.1589
- Browne, John, d.c.1587
- Browne, John, fl.c.1591
- Browne, John Denis, 3rd earl of Altamont, 1756-1809
- Browne, John Denis, 3rd earl of Altamont, fl. 1800
- Browne, Kathleen Anne, 1876-1943
- Browne, Kathleen Anne, 1878–1943
- Browne, Laurence, Fr, fl.1863-1878
- Browne, Mabel, dowager countess of Kildare, d.1610
- Browne, Mary Bonaventure
- Browne, Maximilian Ulysses, Count, 1706-1757
- Browne, Michael John, bishop, 1895–1980
- Browne, Nöel Christopher, 1915-1997
- Browne, Patrick, 1720?-1790
- Browne, Patrick, c. 1720-1790
- Browne, Peter, bishop, d. 1735
- Browne, Phyllis, diarist
- Browne, Richard see Browne, Laurence, Fr
- Browne, Robert, bishop of Cloyne, 1844-1935
- Browne, Thomas, d.1848
- Browne, Thomas, printer and bookseller, fl. 1700-1800
- Browne, Tom, fl. 1920
- Browne, Ulysses Maximilian, 1705-1757
- Browne, Valentine, 5th baronet and 3rd Viscount Kenmare, 1695–1736
- Browne, Vincent
- Browne, Wogan, 1758-1812
- Browne family
- Browne family, earls of Kenmare
- Browner, John, b. c 1787, d. 1863
- Brown family
- Brownhall family
- Brownlee, Linda, b. 1979
- Brownlow, Arthur, 1645-1711
- Brownlow, Arthur, d. 1711
- Brownlow, Arthur, fl. 1689
- Brownlow, Charles, 2nd Lord Lurgan, 1831-1882
- Brownlow, Charles, 1795-1847
- Brownlow, Charles, Lord Lurgan, 1831-1882
- Brownlow, William, 3rd Baron Lurgan, 1858-1937
- Brownlow, William, 1921-1998
- Brownlow, William, fl. 1764-66
- Brownlow, William, Sir, d. 1660
- Brownlow family
- Brownrigg, Abraham, 1836-1928
- Brownrigg, Abraham, bishop of Ossory, 1836-1928
- Brownrigg, Abraham, Parish Priest of Cloughbawn fl. 1853
- Brownrigg, Isabella, 1768-1804
- Brownrigg, Isabella, fl. 1798
- Brownrigg, John
- Brownrigg, John, 1746/7-1838
- Brownson, Orestes A., 1803-1876
- Bruce, Edward, king of Ireland, d. 1318
- Bruce, Hervey Ronald, d,1924
- Bruce, James, d.1917
- Bruce, Robert
- Bruce, Robert, d. 1329
- Bruce family
- Bruck Mary Teresa (née Conway), d. 2008
- Bruen, Jimmy, 1920-1972
- Bruen family
- Brugge, Walter, fl. 1380-1390
- Brugha (née Kingston), Kathleen, 1879-1959
- Brugha, Cathal, 1874-1922
- Brugha, Máire MacSwiney, 1918-
- Brumbach, Katie (Katie Sandwina), 1884-1952
- Brunaud, Francois, fl. 1496
- Brunel, Isambard Kingdom, 1806-1859
- Brunelleschi, Filippo, 1377-1446
- Brunicardi, Niall, fl. 1997
- Brunker, Linda, b.1966
- Bruno, Giordano, 1548-1600
- Brunskill, Richard, 1840-1921
- Brunskill, Ronald William, 1929-
- Bruodin (MacBrody), Anthony, d. 1680
- Bruodin (MacBrody), Anthony, d.1680 ; Carve (Carew), Thomas, 1590-1672
- Bruodine, Anthony, fl. 1672
- Bruodinus, Antonius, 1625-1680 ; Carve, Thomas 1590-1672
- Brush, Crane, d. 1778
- Brush, Cream, d. 1778
- Brush, Crean (Crane), 1727-1778
- Bruton, John, 1947-2024
- Bryan, Daniel, 1900-1985
- Bryan, George, d. 1843
- Bryan, John, fl. 1802
- Bryan, Leslie, 1951-2007 ; O'Byrne, Máirin, 1919-2008
- Bryan, Octavia
- Bryan, Octavia, Catharina Maria, d.1846
- Bryan, Octavia Catherine Mary, 1827-1846
- Bryan, Thomas, d.1921
- Bryan, Tommy, fl. 1921
- Bryan, William Jennings, fl. 1895
- Bryan-Bellew family
- Bryan family
- Bryant, William Cullen, II
- Bryce (née L’Estrange), Violet, 1863-1939
- Bryce, J. Annan, 1843-1923
- Bryce, James, 1767-1857
- Bryce, James, Viscount Bryce, 1838-1922
- Bryce, John Annan, 1841-1923
- Bryce family
- Bryce family, fl. 1767-1902
- Bryne family
- Bryskett, Lodowick, 1547–ca. 1612
- Bryson, Andrew, d.1797
- Bryson, Edgar, d.1971
- Bryson, John Bell, d.1923
- Bryson, Michael, fl. 1806
- Bryson, Nansy, d.1953
- Bryson, Samuel Maziere, 1776-1853
- Bryson, Theobald Matthew, 1845-1909
- Buchan, John, 1st baron Tweedsmuir, 1875-1940
- Buchanan, David, 1920-2011
- Buchanan, George, 1506-1582
- Buchanan, George Charles, fl. 1783-1830
- Buchanan, Valerie, d.2013
- Buck, Frederick, 1771-1840
- Buck, Frederick, 1771?-1840
- Buckinger, Matthew (1674-?)
- Buckland, Frank, 1826-1880
- Buckley, Anastasia, 1872-1947
- Buckley, Daniel
- Buckley, Edmund, fl. 1811-1859
- Buckley, Ellen, 1844-1863
- Buckley, John, 1951-
- Buckley, Nathaniel
- Buckley, Pat, bishop, 1952-
- Buckley, Patrick Coady, 1816-1872
- Buckley, Tim, 1863-1945
- Buckley, Vincent, 1925-1988
- Buckley family
- Bucknill, Alfred Townsend, 1880-1963
- Bugge, Sophus, 1833-1907
- Buggin, R[obert], fl. 1716
- Buggy, Rev. CC, fl. 1830-1835 ; Walsh, John, Rev. CC, fl.1830-1835
- Buick, David, 1842-1907
- Buick, Frederick, Rev., 1811-1908
- Buick, Frederick, Revd, 1811-1908
- Buick, Frederick, Revd, 1811?-1908
- Buite, Saint, d. c.521
- Buker, Margaret J.
- Bulfin, Eamonn, 1892-1968
- Bulfin, Eamonn, 1892-1969
- Bulfin, Edward Stanislaus, Sir, 1862-1939
- Bulfin, Patrick, 1818-1871
- Bulfin, William (Liam), 1863-1910
- Bulfin, William, 1863-1910
- Bulfin, William, 1863-1910 : Lynd, Robert, 1879-1949
- Bulfin, William, 1864-1910
- Bulfin, Éamonn (Eduardo, Ned), 1892-1968
- Bulfin family
- Bulger, Daniel, 1865-
- Bulger, James "Whitey", 1929-
- Bulkeley, Lancelot, Church of Ireland archbishop of Dublin,1568/9-1650
- Bulkeley, Lancelot, d. 1650
- Bulkeley, Richard
- Bulkeley, Richard, 1st baronet Dunlavin, 1634-1685
- Bulkeley, Richard, 2nd baronet Dunlavin, 1660-1710
- Bull, Joseph, fl. 1798
- Bullard, John A., c.1883-1918
- Bullen, Denis Brenan, 1802-1866
- Buller, Charles, MP, 1806-1848
- Buller, Redvers Henry, Sir,1839–1908
- Bullock, Edwin Frederick Hall, 1879-1965
- Bullock, Ezekiel, 1650-1714
- Bullock, Shan F.,
- Bullock, Shan Fadh, 1873-1935
- Bullock family
- Bunbury, Sarah, (neé Lennox), 1745-1826
- Bunbury, Sarah, Lady, d. 1826
- Bunbury, Selina (1802-1882)
- Bunbury, Selina, 1802-1882
- Bunbury family
- Bunn, Mike,
- Bunting, Edward
- Bunting, Edward, 1773-1843
- Bunworth, Charles, d. 1772
- Bunyan, John, 1628-1688
- Buonarroti Simoni, Michelangelo di Lodovico,1475-1564
- Burbage, Thomas, 1879-1966
- Burbidge, Frederick William, 1847–1905
- Burbidge, Frederick William Thomas, 1847-1905
- Burchard of Mount Sion, O. P., fl. 1275
- Burdett-Coutts, Angela Georgina, Baroness Burdett-Coutts, 1814-1906
- Burdett-Coutts, Angela Georgina, Baroness Burdett-Coutts, 1814-1906 ; Otway Cave, Robert, c.1796-1844 ; Sophia Burdett, 1794-1849
- Burdett family
- Burdon, David John, d.2021
- Burdon, Jeanne
- Burges, John Ynyr, fl. 1834
- Burges, William, 1827-1881
- Burgess, Rupert William, c.1896-1917
- Burgh (Boroughs), Thomas, 5th Baron Burgh of Gainsborough, d. 1597
- Burgh, de, (de Burgh), family,earls of Ulster, lords of Connacht
- Burgh, Richard de, 2nd earl of Ulster, lord of Connacht, c.1259–1326
- Burgh, Richard de, earl of Ulster and earl of Connaught, 1259?-1326
- Burgh, Thomas, 1670-1730
- Burgh, Ulick de, 5th earl and marquess of Clanricarde, 1604-1658
- Burgh, Walter Hussey, d. 1783
- Burgh, William de, 3rd earl of Ulster, 1312-1333
- Burk, John Daly, 1776?-1808
- Burke (de Burgh), Honoria, 1549?-1652?
- Burke (de Burgh), Richard (Risdeard Mac Oliverus or FitzOliverus), d. 1585
- Burke (de Burgh), Risdeárd, d. 1473
- Burke (de Burgh, de Burgo), John, 1590-1667
- Burke, Andrew, 1650-1727
- Burke, Annie
- Burke, Augustus Joseph Nicholas, 1838-1891
- Burke, Augustus Nicholas, 1838-1891
- Burke, Bernard, 1789-1861
- Burke, Bernard, Sir, d. 1892
- Burke, Bobby (Robert Malachy), 1907-1998
- Burke, Daniel, 1845/46?-post 1897
- Burke, Edmund, 1729-1797
- Burke, Edmund, 1729-1797 ; Hussey, Thomas, Bishop of Waterford and Lismore, 1746-1803
- Burke, Edmund, 1729-1797 ; Macpherson, Crawford Brough, 1911-1987
- Burke, Edmund, 1729-1797 ; Smith, Adam, 1723-1790
- Burke, Edmund, 1729-1797,
- Burke, Edmund, 1730-97
- Burke, Edmund, 1730-1797
- Burke, Edmund, 1820-1890
- Burke, Edmund 1729-1797
- Burke, Edmund 1729-1797 : Berkeley, George, 1685-1753
- Burke, Hanne (Klara Johanna Niermann), 1926-2012
- Burke, James, 1739-1822
- Burke, James Dominick, 1833-1904
- Burke, James Florence, 1771-
- Burke, James Michael, 1873-1936
- Burke, James Michael, d. 1936
- Burke, John (‘Sean’), 1899-1974
- Burke, John (‘Sean’), 1899–1974
- Burke, John, 1899-1974
- Burke, John, archbishop of Tuam
- Burke, John, c1843-1900
- Burke, John, d. 1919
- Burke, Joseph
- Burke, Margaret, Dowager Viscountess Magennis of Iveagh, (Lady Iveagh), c.1673-1744
- Burke, Margaret,Dowager Viscountess Magennis of Iveagh, (Lady Iveagh), c.1673-1744
- Burke, Marianne Alice, 1842-1909
- Burke, Martin, d. 1842
- Burke, Martin, d. 1863
- Burke, Nancy
- Burke, née Walsingham, Frances, countess of Clanricard, 1567-1632 ; Burke, Richard, earl of Clanricard, 1572-1635
- Burke, Paddy, fl.1980s
- Burke, Paschal, 1869-1958
- Burke, Patrick, 1849-1933
- Burke, Patrick, TD, (d.1945)
- Burke, Ricard O'Sullivan, 1838-1922
- Burke, Riccard, 2nd earl of Clanricard, d.1582
- Burke, Richard, 4th earl of Clanricard, 1572-1635
- Burke, Robert M., 1907-1998
- Burke, Robert Malachy, fl. 1907-1951
- Burke, Robert O'Hara, 1820-1861
- Burke, Roland, bishop, d. 1580
- Burke, Thomas, Bishop of Ossory, 1709-1776
- Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
- Burke, Thomas, O.P., c.1709-1776
- Burke, Thomas Edward, d.1917
- Burke, Thomas Henry, 1829-1882
- Burke, Tom, fl. 1922-1960
- Burke, Tom, O.P., 1830-1883
- Burke, Ulick, 1st earl of Clanricard
- Burke, Ulick, 1st marquess and 5th earl of Clanricarde, 1604-1658
- Burke, Ulick, 3rd Earl of Clanricard, d. 1601
- Burke, Ulick, 5th earl of Clanricarde, 1604-1658
- Burke, Ulick, Canon, 1829-1887
- Burke, Ulick, fifth earl of Clanricarde and second earl of Saint Albans, 1604-1668
- Burke, William, 1792-1829
- Burke, William, 1793?–1829
- Burke, William, fl. 1916
- Burke, Úna
- Burke-Irwin, May, Countess of Limerick, fl. 1870-1943
- Burke-Savage, Ronnie, S.J., 1913-1998
- Burke family
- Burke family (of Connacht)
- Burke family, earls of Clanricard ; O'Kelly family, lords of Hy Many
- Burke family, of Marble Hill
- Burke Lords
- Burkhead, Henry, fl. 1641-1645
- Burkitt, Denis Parsons, 1911-1993
- Burkitt, Harold Hamilton, 1876-1961
- Burkitt, James Parsons, 1870-1959
- Burkitt, Robert James, 1869-1945
- Burkitt, Roland Wilks, 1872-1946
- Burnaby, Elizabeth Alicia Hawkins, 1860-1934
- Burnaby, Frederick Gustavus, Colonel, 1842-1885
- Burnell, family
- Burnell, Henry, 1540-1614
- Burnell, Henry, 1590?-1654?
- Burnell, Henry, fl. 1639-1655
- Burnell, Henry, fl. 1639–1655
- Burnell, Robert, bishop, d. 1292
- Burnell family
- Burnet, Gilbert, bishop, 1643-1715
- Burnet, Thomas, Sir, 1694-1753
- Burnett Family
- Burnett family
- Burnham, John de, fl. 1343-1349
- Burns (Ó Broin), Michael (Micheál),1887-1949
- Burns, Agnes, fl. 1804
- Burns, Anna, 1962-
- Burns, Brian P., b.1936
- Burns, Dr Cecil (Joe), -1989
- Burns, family
- Burns, John Joseph, 1901-1957
- Burns, Lydia, Lizzy, d. 1878
- Burns, Mary, d. 1863
- Burns, Peats, fl 1960
- Burns, Robert, 1759-1796
- Burns, Robert, 1759-1796,
- Burns, Robert, 1759–1796
- Burns, Sheon, d. 1887
- Burns, Timothy (1820-1853)
- Burns, Veronica Conroy, 1914-1998
- Burns, Veronica Conroy, 1914-1998,
- Burnside, John, ca 1798-1881
- Burrell, William, Sir, 1732-1796
- Burroughs, Anne Eleanor, 1898-1981
- Burrowes, Richard, d. 1945
- Burrowes, Stephen, 1854-1906
- Burrowes family
- Burtchaell, George Dames, 1853-1921
- Burtchaell, Peter, 1820-1894
- Burton, Charles, Sir, 1823-1902
- Burton, Charles Edward, 1846-1882
- Burton, Decimus, 1800-1881
- Burton, Edmund, 1737-1817
- Burton, Frederick William, 1816-1900
- Burton, Frederic William, 1816 – 1900
- Burton, Frederic William, 1816-1900
- Burton, Frederic William, Sir, 1816-1900
- Burton, James, 1761-1837
- Burton, Janet
- Burton, John, Canon, before 1868-1928
- Burton, Katherine J. fl. 1896-1899
- Burton-Conyngham, William, 1733-1796
- Burton family
- Bury, Catherine Maria (née Dawson), Lady Charleville, 1762-1815
- Bury, Catherine Maria (née Dawson, Lady Charleville), 1762-1851
- Bury, Charles Kenneth Howard, 1883-1963
- Bury, Charles Kenneth Howard, Colonel, 1883-1963
- Bury, Charles Kenneth Howard-, 1883-1963
- Bury family
- Bush, George W., president
- Bushe, Charles Kendal, 1767-1843
- Bushe, Charles Kendal, d. 1843
- Bushe, Charles Kendall, 1767-1843
- Bushe, Letitia, d. 1757
- Bushin, Philip, d.1625
- Busteed, John ; Busteed Knox, Frances ; Busteed Knox, John
- Butcher, Eddie, 1900 - 1980
- Butler (le Botiller), Edmund, justiciar of Ireland
- Butler (née Preston), Elizabeth, duchess of Ormonde, 1615-1684
- Butler (Thompson), Elizabeth, 1846-1933
- Butler, (Charlotte) Eleanor, 1739-1829
- Butler, Adelaida Isabel Suárez, b.1886
- Butler, Alexander Bishop, 1805-1846
- Butler, Alice, fl. 1532
- Butler, Anne, countess of Ormond, fl. 1798
- Butler, Anthony, 1830-1901
- Butler, Bartholomew
- Butler, Ben, fl. 1865
- Butler, Bruce Kenneth, 1943-2013
- Butler, Charlotte Eleanor, Lady, 1739-1829
- Butler, Christopher, 1673-1757
- Butler, Constance, Lady, b.1879
- Butler, David, fl. 1600-1700
- Butler, David, fl. 1948
- Butler, Edmund (‘MacRichard’), c.1420–1464
- Butler, Edmund, 1st Earl of Carrick 1268-1321
- Butler, Edmund, 1629-1724
- Butler, Edmund, Sir, d. 1330
- Butler, Edmund MacRichard, 1420–1464
- Butler, Edward, 1st Viscount Galmoy, d. 1653
- Butler, Edward, 1862-1940
- Butler, Edward, Sir, Major General, KMT, 1770-1820
- Butler, Edward Arthur, Captain, 1843-1916
- Butler, Edward Ernest, fl. 1891-1917
- Butler, Edward George Washington, 1800-1888
- Butler, Edward William, c.1769-1819
- Butler, Eleanor
- Butler, Eleanor, countess of Ormond, d. 1363
- Butler, Eleanor, Lady, d. 1468
- Butler, Elizabeth, countess of Chesterfield, d. 1665
- Butler, Elizabeth, countess of Ormond, d. 1684
- Butler, Elizabeth, Duchess of Ormond and 2nd Baroness Dingwall (née Preston), 1615–1684
- Butler, Elizabeth, Lady, 1846-1933
- Butler, Elizabeth, Lady Thurles, 1588-1673
- Butler, Elizabeth Southerden, Lady, 1846-1933
- Butler, Ellis Parker, 1869-1937
- Butler, George, b.1880
- Butler, George, c.1917-2014
- Butler, Gilbert, 1910-2004
- Butler, Harriet
- Butler, Henry, 1805-1881
- Butler, Henry Thomas, 2ndearl of Carrick, d.1813
- Butler, Henry Thomas, 4th earl of Carrick, 1834-1846
- Butler, Hervé, vicomte de, 1915-2014
- Butler, Hervé, vicomtesse de, 1920-2014
- Butler, Hubert, 1900-1991
- Butler, Humphrety, 2nd viscount Lanesborough
- Butler, Humphrey, 1st earl of Lanesborough, c.1700-1768
- Butler, Isaac, fl. 1744
- Butler, Jacques de, Vicomte, 1912-2002
- Butler, James 'Oge', 1649-1727
- Butler, James, 1st duke of Ormond, 1610-1688
- Butler, James, 1st earl of Ormond, d. 1338
- Butler, James, 2nd Duke of Ormond 1665-1745
- Butler, James, 2nd duke of Ormonde, 1665-1745
- Butler, James, 3rd earl of Ormond, 1360–1405
- Butler, James, 4th earl of Ormond, c.1390-1452, (called the 'White Earl')
- Butler, James, 4th earl of Ormond, c.1390–1452, (called the 'White Earl')
- Butler, James, 4th earl of Ormond, c.1390–1452, (called the ‘White Earl’)
- Butler, James, 5th earl of Ormonde and earl of Wiltshire, 1420-1461
- Butler, James, 9th earl of Ormond, d. 1546
- Butler, James, 9th earl of Ormond and 2nd earl of Ossory, c.1496–1546
- Butler, James, 12th earl & 1st duke of Ormond, 1610-1688
- Butler, James, 12th Earl & 1st Duke of Ormond, 1610-1688 ; Butler, James, 2nd Duke of Ormonde, 1665-1745
- Butler, James, 12th earl & 1st duke of Ormond, 1610-1688,
- Butler, James, 12th earl & 1st duke of Ormond, 1610–1688
- Butler, James, 12th earl & 1st duke of Ormond, 1610–1688
- Butler, James, 12th earl & 1st duke of Ormonde, 1610-1688
- Butler, James, 12th Earl and 1st Duke of Ormond, 1610-1688
- Butler, James, 13th/23rd Baron Dunboyne, 1780-1850
- Butler, James, 1605-1653
- Butler, James, 1610–88) 12th earl and 1st duke of Ormond,
- Butler, James, c.1685-1746
- Butler, James, c1390-1452, 4th earl of Ormonde
- Butler, James, d. 1774
- Butler, James, the elder, of St James, London, d.1759
- Butler, James Arthur Wellington Foley, 4th Marquess of Ormonde, 1849-1943
- Butler, James Bayley, 1884-1964
- Butler, James Blake
- Butler, James FitzThomas, Marquess and 1st Duke of Ormond, 1610-1688
- Butler, James George Anson, earl of Ossory and marquis of Ormonde, 1890-1949
- Butler, James II, d. 1791
- Butler, James Wandesford, 19th earl and 1st marquess of Ormonde, 1774–1838
- Butler, James Wandesford, 19th earl and 1st marquess of Ormonde, 1774–1838
- Butler, Jane Hays, c.1925-2016
- Butler, Jean Pantaléon, Countess de, née Marie Alexandrine Reine de Jassaud, d.1794
- Butler, Joan, Countess of Ormond
- Butler, Joan Mary, c.1917-2013
- Butler, John, 2nd marquess of Ormonde, 1808-1854
- Butler, John, 1809-1854
- Butler, John, ?d.1766
- Butler, John, bishop of Cork, c. 1731-1786
- Butler, John, esq., d.1764
- Butler, John, fl. 1570
- Butler, John, fl.1739-1764
- Butler, John, Lord Dunboyne, bishop, 1731-1800
- Butler, John 17th Earl of Ormonde and 10th Earl of Ossory, 1740-1795
- Butler, John Edward, fl.1849-1854
- Butler, John Fitzwalter, 29th Lord Dunboyne, 1951-2013
- Butler, John Ormonde, fl. 1948
- Butler, Josephine, fl. 1887
- Butler, Josephine Elizabeth, 1828-1906
- Butler, Joseph Lawrence, 1819-1901
- Butler, Katherine, 1914-2000
- Butler, Margaret, Lady, countess of Ormond, 1471?-1542
- Butler, Margaret, Lady, d. after 1525
- Butler, Marie Joseph, 1860-1940
- Butler, Marilyn, 1937-2014
- Butler, Mary, abbess, 1641-1723
- Butler, Mary E.L., 1873-1920
- Butler, Matthew, 1874-1964
- Butler, Mildred Anne, 1858-1941
- Butler, Noel Beamish, 1915-2002
- Butler, Patrick, 1802-1871
- Butler, Patrick Theobald Tower, 28th baron Dunboyne, 1917-2004
- Butler, Peter
- Butler, Philip
- Butler, Pierce, 1744-1822
- Butler, Pierce, d. 1740
- Butler, Piers (‘Piers Ruadh’), 8th earl of Ormond and 1st earl of Ossory, c.1467–1539
- Butler, Piers (‘Piers Ruadh’), 8th earl of Ormond and 1st earl of Ossory, c.1467–1539
- Butler, Piers, 8th earl of Ormond and 1st earl of Ossory, d. 1539
- Butler, Piers, 1521-1577
- Butler, Piers, c. 1467-1539
- Butler, Piers, d. 1464
- Butler, Richard, 1st Viscount Mountgarret, d. 1571
- Butler, Richard, 2nd earl of Glengall, 1794-1858
- Butler, Richard, 1639-1686
- Butler, Richard, fl. 1584
- Butler, Richard, fl. 1776
- Butler, Richard, Hanry Piers, 17th Count Mountgarret, 1937-2004
- Butler, Robert Reginald Frederick, 1st Baronet, 1866 – 1933
- Butler, Samuel, d. 1697
- Butler, Sarah
- Butler, Simon, fl. 1781
- Butler, Somerset Arthur, 5th earl of Carrick, 1835-1901
- Butler, Somerset Hamilton, 1st earl of Carrick, 1719-1774
- Butler, Somerset Hamilton, earl of Carrick, fl. 1757
- Butler, Somerset Richard, 3rd earl of Carrick, 1779-1838
- Butler, Stephen, fl.1610-1638
- Butler, Stephen, Sir, fl.1609-1618
- Butler, Theobald, d. 1205x6
- Butler, Theobald, d. 1635
- Butler, Theobald Fitzwalter, 24th Baron Dunboyne, 1806-1881
- Butler, Theobald see Walter (Butler), Theobald, 1150?-1206?
- Butler, Theophilus,1669-1723
- Butler, Theophilus, MP, 1669-1723
- Butler, Thomas
- Butler, Thomas, 'Black Tom', 10th Earl of Ormond 1531-1614
- Butler, Thomas, 6th Earl of Ossory, 1634-1680
- Butler, Thomas, 10th earl of Ormond, 1532-1614
- Butler, Thomas, 10th earl of Ormonde, 1532-1614
- Butler, Thomas, 1531-1614
- Butler, Thomas, 1634-80, Earl of Ossory
- Butler, Thomas, 1837-1920
- Butler, Thomas Adair see Adair, Thomas, V.C., 1836-1901
- Butler, Thomas J., 1887-1961
- Butler, Thomas O'Brien, 1861-1915
- Butler, Toby, Sir, fl. 1690
- Butler, Walter, 11th earl of Ormond and 4th earl of Ossory, 1559-1633
- Butler, Walter, d. 1634
- Butler, Walter, d.1634
- Butler, Walter, d.1634,
- Butler, Walter, fl. 1750s
- Butler, William, 1686-1731
- Butler, William, 1793-a.1835
- Butler, William, 1825-1905
- Butler, William, b.1825
- Butler, William, d. 1617
- Butler, William Francis, Sir, 1838-1910
- Butler Burke, Vivian, 1881?-1937
- Butler dynasty
- Butler familty
- Butler family
- Butler family (of Grallagh and Boytonrath)
- Butler family (of Kilcash)
- Butler family, Barons Cahir
- Butler family, earls and dukes of Ormond
- Butler family, earls and dukes of Ormond ; Butler, Margaret ; Butler, Anne ; Fitzgerald, Margaret, Countess of Ormond and Ossory (1472-1542) ; Fitzgerald, Joan, Countess of Ormond, Ossory and Desmond ; Fitzgerald family
- Butler family, earls and dukes of Ormonde
- Butler family, earls of Carrick
- Butler family, earls of Ormond
- Butler family, earls of Ormond ; FitzGerald family, earls of Kildare
- Butler family, viscounts Galmoy
- Butler family of Munphin
- Butler family of Rouskagh
- Butlers family
- Butlers of Ormond (c.1220)
- Butt, Isaac
- Butt, Isaac (1813-1879)
- Butt, Isaac, 1813-1879
- Butt, Isaac, 1813-1879,
- Butterfield, Herbert, Sir, 1900-1979
- Butterworth, James F., 1859-1929
- Buttimer, Jerry
- Buttimer, Jerry, 1967-
- Bux, Mary, d.1642
- Byers, James, d. 1928
- Byers, Margaret
- Byers, Margaret, 1832-1912
- Byers, Margaret, d. 1912
- Byers, Thomas 'Tommy', 1915-2002
- Byrd, William, 1540-1623
- Byrne, (Kevin) Herbert, 1884-1978
- Byrne, Alfred ('Alfie'), 1882-1956
- Byrne, Alfred, 1882-1956
- Byrne, Andrew, 1780-1863
- Byrne, Andrew J., 1830-1911
- Byrne, Bernard see Byrne, Donn (Brian Oswald Donn-Byrne), 1889-1928
- Byrne, Billy, 1775-1798
- Byrne, Charles Michael
- Byrne, Christopher, 1834-1918
- Byrne, Christopher M., fl.1908-1922
- Byrne, David
- Byrne, David, 1797-1827
- Byrne, Donn (Brian Oswald Donn-Byrne), 1889-1928
- Byrne, Donn, 1889-1928
- Byrne, Edmond, of Dublin
- Byrne, Edmund, 1655/6-1723/4
- Byrne, Edmund, alias ‘Edward Hamson’, archbishop of Dublin, c.1655/6-1723/4
- Byrne, Edward Colclough, fl. 1867
- Byrne, Edward J., Archbishop 1872-1940
- Byrne, Edward Joseph, 1872-1940
- Byrne, Edward Joseph, 1872-1941
- Byrne, Felix, 1912-
- Byrne, Francis J., 1934-2017
- Byrne, Francis John, 1934-2017
- Byrne, Gay, 1934-
- Byrne, Gerard, b. 1969
- Byrne, Hugh Vesty, d. 1842
- Byrne, James, "The Red Lad", fl.1910
- Byrne, James, 'the coroner', fl. 1833
- Byrne, James, c.1875-1913
- Byrne, James, d.1916
- Byrne, James, of Dublin
- Byrne, Jim, 1890-1961
- Byrne, John, 1890-1962
- Byrne, John, 1920-1935
- Byrne, John, d. 1920
- Byrne, John, fl. 1672
- Byrne, John, fl.1940-1969
- Byrne, John Francis, 1880-1960
- Byrne, John Joseph, 1895-1954
- Byrne, Joseph, 1876-1939
- Byrne, Joseph G., 1870-
- Byrne, Leslie H., d. 197?
- Byrne, Martin, 1815-1886
- Byrne, Martin, 1815-1892
- Byrne, Matt, d. c.1996
- Byrne, Michael, c.1862-1912
- Byrne, Miles, 1780-1862
- Byrne, Niall, 1934-2012
- Byrne, Patrick
- Byrne, Patrick (Ó Beirn, Pádraig Dall) (harpist), c.1794-1863
- Byrne, Patrick, 1782-1864
- Byrne, Patrick, 1783-1864
- Byrne, Patrick, c.1782-1864
- Byrne, Patrick, c.1784–1863
- Byrne, Patrick, c. 1888-1916
- Byrne, Peter, 1874-1962
- Byrne, Phaley, 1912-
- Byrne, Robert, fl. 1667
- Byrne, Robert Shapland, d. 1872
- Byrne, Thomas, d.1815
- Byrne, Tommy, 1958-
- Byrne, Tony "Socks", fl.1930-1956
- Byrne, Tony, fl. 1956
- Byrne, Tony, Fr, fl. 1967
- Byrne, William 'Billy', 1774-1799
- Byrne, William, d. 1799
- Byrne, William A., 1872-1933
- Byrne, William Michael, fl. 1798
- Byrne family
- Byrne family of Cabinteely
- Byrnes, Patrick, Constable, 1913-1972
- Byrnes, Richard, Colonel, fl. 1850-1864
- Byrnes, Thomas Joseph, 1860-1898
- Byron, George Gordon, 6th Baron Byron, 1788-1824
- Bácéir, Seán
- Báetán (d. 664)
- Báetón, King of Tara, d. 586
- Báithín, c.536-c.600
- Bán, Tomás, 1870-1961
- Béaslaí, Piaras, 1881-1965
- Béaslaí, Piaras S., 1881-1965
- Bédarida, François
- Bédarida, François, 1926-2001 ; Gladstone, William Ewart, 1809-1898 ; Parnell, Charles Stewart, 1846-1891
- Bórama, Brian, d. 1014
- Bóroma, Brian, see Brian Bóruma, high-king of Ireland, c.941-1014
- Böll, Heinrich, 1917-1985
- Cadac Andreas, fl. 8th cent.
- Cadden, Mary Anne (Mamie)
- Cadogan, George Henry, fifth Earl Cadogan, 1840-1915
- Cadroe see Cathróe of Metz Saint, fl 900-971
- Cadwallon, king of Gwynedd, d. 634
- Caelan, Saint
- Caerbhall, fl. 888
- Caesar, Julius, 100 BC- 44 BC
- Caesar, Julius, 100 BC-44 BC
- Caffrey, James, d.2018
- Cage, Charles, d. 1849
- Cagle, Charles Harmon
- Cahal, Philip, fl.1667-1711
- Cahalan, Cissy, 1876-1948
- Cahalane, William.,1894-1922
- Cahil, Daniel W., 1796-1864
- Cahill, Daniel William, 1796-1864
- Cahill, Edward, Fr., fl. 1937
- Cahill, Edward, SJ,1868-1941
- Cahill, Jack, 1921-
- Cahill, Joseph, 1920-2004
- Cahill, Martin, 1949-1994
- Cahill, Philip 'Phil', c.1923-2016
- Cahir, Francis
- Cahir, Michael
- Caillín (fl. late 6th/early 7th cent.), patron saint of Fenagh
- Caimbeul, Donncadh see Campbell, Duncan, fl.1795-1798
- Caimín, St
- Cainnech, saint, 525?-600?
- Cainnech moccu Dálann, 521x7-599x600
- Cains, Anthony
- Caintigern, Saint, d. 734
- Caird, Donal, archbishop
- Caird, Donald, archbishop of Dublin, 1925-2017
- Caird, James, Sir, 1816-1892
- Cairnech, Saint, d. 539?
- Cairnes, John Elliot, 1823-1875
- Cairns, Hugh, 1904-1941
- Cairns, Hugh McCalmont, 1st earl Cairns, 1819-1885
- Cairns, John Elliot, 1823-1875
- Cairns, Philip
- Calatrava, Santiago, 1951-
- Caldbeck, William Francis, c.1820-1872
- Calder, Francis Anderson, 1787-1855
- Caldwell, Andrew, 1732-1808
- Caldwell, Andrew, 1732-1808 ; Cockburn, George, 1764–1847
- Caldwell, Elizabeth, Lady, 1729-1778
- Caldwell, Henry, 2nd Baronet of Castle Caldwell, d. 1726
- Caldwell, James (1734-1781)
- Caldwell, James, 1st Baronet of Castle Caldwell, 1634-1716
- Caldwell, James, 1747-1829
- Caldwell, James, Sir, 4th baronet of Castle Caldwell, 1720?-1784
- Caldwell, James, Sir, fl. 1750-1795
- Caldwell, John, 3rd Baronet of Castle Caldwell, d. 1743
- Caldwell, John, 5th Baronet of Castle Caldwell, 1756-1830
- Caldwell, John, fl. 1793-1849
- Caldwell, John, Sir, fl. 1750-1795
- Caldwell, John Taylor, 1911-
- Caldwell, Patrick, 1888-1972
- Caldwell, Sir James (c. 1720-1784)
- Caldwell family
- Calhoun, Alexander, c.1663-1717
- Calhoun, John Caldwell
- Calladine, George, 1793-1876
- Callaghan, Cornelius, fl.1716-1734
- Callaghan, Daniel, 1786–1849
- Callaghan, Eliza, 1802-1852
- Callaghan, Hugh, fl. 1991
- Callaghan, James, 1912-2005
- Callaghan, John, 1605-1654
- Callaghan, Leonard James, baron Callaghan of Cardiff, 1912-2005
- Callaghan, Patrick, c.1866-1895
- Callaghan family
- Callagy, Patrick
- Callagy, William
- Callan, Harry, b. 1913
- Callan, Margaret, née Hughes, 1817?-1883?
- Callan, Nancy, c.1832-1896
- Callan, Nicholas, Fr., 1799-1864
- Callan, Nicholas Joseph, Fr, 1799-1864
- Callan, Philip, 1837–1902
- Callan, Philip, M.P., d. 1885
- Callanan, Jeremiah John, 1795-1829
- Callanan, Laurence, O. F. M.,, 1739-1818
- Callanan, Laurence, OFM, 1739-1818
- Callanan, Patrick
- Callanan, William, d. 1808
- Callan family
- Callary, Philip, 1849-1925
- Callary, Robert, 1887-1961
- Callender, Geoffrey Arthur Romaine, Sir, 1875-1946
- Callender, Ignatius, fl.1916-1936
- Callery, Jim, 1934-
- Callery family
- Callimachus
- Callnan, Andrew, fl.1790-1804
- Callánach Ó Séaghdha, Mícheál, 1812-1901
- Calvert, Cecil, 2nd Baron Baltimore, 1605-1675
- Calvert, Edward Spence, 1902-1991
- Calvert, Frances, fl.1789-1822
- Calvert, George, 1st baron Baltimore, 1580?-1632
- Calvert, George, d. 1632
- Calvert, The Hon. Leonard Calvert, 1606-1647
- Calvert family
- Cambi, Carlo, b. 1847- d.?
- Cambrensis, Giraldus, see Gerald, of Wales, c.1146-c.1220x23
- Camden, William, 1551-1623
- Camden, William,1551-1623
- Camelin, Mathieu, 1735-
- Cameron, Charles Alexander, Sir, 1830-1921
- Camillo Benso, Count of Cavour, 1810-1861
- Campbell (Elvery), Beatrice (Lady Glenavy), 1883-1961
- Campbell (née Gunning), Elizabeth, duchess of Argyll and suo jure Baroness Hamilton of Hameldon [other married name Elizabeth Hamilton, duchess of Hamilton and Brandon], c.1733-1790
- Campbell, Alexander
- Campbell, Alexander, 1788-1866
- Campbell, Andrew, d. 1894
- Campbell, Archibald, 5th earl of Argyll, 1538-1573
- Campbell, Beatrice Moss, Lady Glenavy, 1883-1970
- Campbell, Brian, c.1922-2017
- Campbell, Charles, fl.1848-1850
- Campbell, Charles Gordon, 2nd Baron Glenavy, 1885–1963
- Campbell, Colen, 1676-1729
- Campbell, D.
- Campbell, David, 1887-1971
- Campbell, Duncan, fl.1795-1798
- Campbell, Flan, 1919-1994
- Campbell, Francis Martin Xavier, c.1970-
- Campbell, George, fl. 1951
- Campbell, George Frederick, 1917-1979
- Campbell, Hugh, d.1879
- Campbell, Hugh, fl. 1818
- Campbell, James, 1812-1893
- Campbell, James Henry Mussen, 1st Baron Glenavy, 1851-1931
- Campbell, James Henry Mussen, 1st Baron Glenavy, 1851–1931
- Campbell, John, 1809-1874
- Campbell, John, 1883-1962
- Campbell, John Edward (Seán), 1921-2008
- Campbell, John Francis, 1821-1885
- Campbell, John Oliver, 1868-1946
- Campbell, Joseph, 1879-1944
- Campbell, Mary, 1857-1928
- Campbell, Mary, fl. 1908
- Campbell, Michael, 1766?-
- Campbell, Paddy
- Campbell, Patrick, fl. 1765-1823
- Campbell, Patrick Gordon, 3rd Baron Glenavy, 1913–1980
- Campbell, Robert, 1804-1878
- Campbell, Samuel
- Campbell, Thomas, 1733-1795
- Campbell, Thomas, 1777-1844
- Campbell, William James, 1841-1909
- Campbell-Bannerman, Henry, Sir, 1836-1908
- Campbell-Bannerman, Henry, Sir, 1836-1908 ; Gladstone, William Ewart, 1809-1898
- Campbell family
- Campion, Bob, b.1907
- Campion, Edmund, Saint, 1540-1581
- Campion, Edmund, Saint, 1540-1581 ; Davies, John, Sir, 1569-1626 ; Spenser, Edmund, 1552?-1599
- Campion, Edward, 1883-1953
- Campion, Molly, née Potterton, d. 1980
- Canavan, Frank, d. c.1995
- Canavan, Michael, 1903-1997
- Canavan, Michael, fl.1905-1923
- Canavan, Tony, fl. 1999
- Candler family
- Cane, Alan, Capt. RM
- Cane, Robert, 1807-1858
- Cane, Robert, 1807-1858 ; Cane, Robert, d. 1858
- Cane, Robert, d. 1858
- Cane, Robert, Dr., 1807-1858
- Canice (Cainneach), Saint, 516?-600?
- Canice (Cainnech of Aghaboe 515-600
- Canice, Saint
- Canir, Saint
- Canisius, Peter, Saint, 1521-1597
- Canning, Charles, second baron Garvagh, 1826-1871
- Canning, George, 1770-1827
- Canning, Hubert George de Burgh, 2nd marquess of Clanricarde, 1832-1916
- Canning, Mehitabel, 1749-1831
- Canning, Michael, 1971-
- Canning, Michael, b. 1791
- Canning family
- Cannon, Edward, 1739-1814
- Cannon, Henry Charles, 1833-1872
- Cannon, John Ashton
- Cannon, Mary
- Cannon, Moya
- Cannon, Patrick Francis Garret, 1908-1968
- Cannovan, Mary, d. 1841
- Canny, Nicholas
- Cantillon, Richard, 1687?-1734?
- Cantillon, Richard, c.1680-1734
- Cantwell, Ann, d.2016
- Cantwell, Ethna, d.2023
- Cantwell, John, bishop, d. 1866
- Cantwell, John, Bishop of Meath, 1792-1866
- Cantwell, John II, d. 1482
- Cantwell, Josephine, 1867-1950
- Cantwell family
- Canty, Kathleen, 1947-2022
- Canty, Michael, 1857-1914
- Caomhánach, Donal, fl. 1531
- Caomhánach, Eoghan, 1784–1849
- Caomhánach, Seán (óg) (Seán a' Chóta) (1885–1947)
- Caomhánach, Seán (óg) (‘Seán a’ Chóta’), 1885–1947
- Caomhánach, Seán, 1885-1947
- Caomhánach family
- Caomnanach, Gerald McMuriertagh Oge, d. 1630
- Capel, Arthur, 1st earl of Essex, bap. 1632, d. 1683
- Capel-Cure, Alfred, 1826-1896
- Capell, William Annel, 4th Earl of Essex, 1732-1799
- Capell-Coningsby, George, 5th Earl of Essex, 1757-1839
- Cappellari, Mauro
- Capra, Frank, 1897-1991
- Captain Rock
- Caracciolo, Antonio
- Caragher, Terence, d. 1914
- Caraher, Bartholomew, fl. 1841
- Caraher, John E., 1818-
- Caraher, Owen Joseph, d. 1879
- Caraher, Thomas, 1834-
- Caraher family
- Caraman, Philip, 1911-
- Caravaggio, 1571-1610
- Carberry, Juanite, 1925-2013
- Carbery, Dan
- Carbery, Ethna
- Carbery, Ethna, 1866–1902
- Carbery, Ethna, pseud., 1866-1902
- Carbery, Ethna, pseud.1866–1902
- Carbery family
- Carden, John Rutter, 1811-1866
- Carden, Sheila, d.2020
- Cardiff, Catherine, d. 1920
- Cardiff, Paddy,
- Cardwell, Edward, 1st viscount Cardwell, 1813-1886
- Cardy, Samuel, fl. 1761
- Carell, Daniel, fl.1675-1676
- Carew, George, earl of Totnes, 1555-1629
- Carew, George, earl of Totnes, 1555-1629,
- Carew, George, Lord, 1555-1629
- Carew, Helen, b. c 1856, d. 1928
- Carew, James Laurence, 1853-1903
- Carew, Patrick J., bishop, d. 1855
- Carew, Peter, Sir, 1514-1575
- Carew, Peter, Sir, 1514?-1575
- Carew, Peter, Sir, d.1580
- Carew, Robert, 1st lord Carew of Castleboro, d. 1856
- Carew, Robert Shapland, 1st baron Carew, 1787-1856
- Carew, Robert Shapland, 2nd Baron Carew, 1818-1881
- Carew, Thomas, 1590-c.1672
- Carew, Thomas, 1595?-1639?
- Carew family
- Carey, Charles, d. 1859
- Carey, Denis Joseph, 1970-
- Carey, Henry, viscount Falkland, 1573-1633
- Carey, Hugh, 1919-2011
- Carey, James, 1845-1883
- Carey, James, d. 1883
- Carey, James. d.1851
- Carey, James Maurice, The very Rev., 1926-2001
- Carey, James Maurice, The very Revd, 1926-2001
- Carey, John, 1756-1826,
Moore, Margaret King (Lady Mount Cashell), 1772-1835,
Brooke, Henry, 1703?-1783
- Carey, John, 1756-1829
- Carey, John, 1800-1891
- Carey, Mathew, 1760-1839
- Carey, Matthew, 1760-1839
- Carey, Mordecai
- Carey, William Paulet, 1759-1839
- Carey family
- Cargill, Hugh (1739-1799)
- Cargill, Hugh, 1739-1799
- Cargin, Norman John Atchinson, d.1916
- Carleton, Guy, baron Dorchester, 1724-1808
- Carleton, William, 1794-1869
- Carleton, William, 1794-1869 ; Yeats, W. B. (William Butler), 1865-1939
- Carley, Thomas, d. c.1996
- Carlile, Anne Jane, 1775-1864
- Carlile, Ann Jane, fl. 1847
- Carlile, James, 1784-1854
- Carlile, James, 1785-1854
- Carlin, Terry, 1946-2003
- Carling, James
- Carling family
- Carlisle, James, 1810-1882
- Carlow, Viscount, fl. 1904
- Carlyle, Thomas (1795-1881)
- Carlyle, Thomas, 1795-1881
- Carman, Cathy, b. 1952
- Carman family
- Carmichael, Amy, 1867-1951
- Carmody, Patrick, 1833x4-1909
- Carmody, Vincent
- Carnduff, Thomas, 1886-
- Carnduff, Thomas, 1886-1956
- Carnegie, Andrew, 1835-1919
- Carney, Andrew, 1794-1864
- Carney, Eamon, 1942-
- Carney, Frank, 1904-1977
- Carney, Jack
- Carney, James (Brother Paul), 1844-1928
- Carney, James, 1914-1989
- Carney, James Patrick, 1914-
- Carney, James Patrick, 1914–1989
- Carney, Michael, 1920-
- Carney, Winifred
- Carney, Winifred, 1887-1943
- Carney, Áine, 1941-2014
- Carney family
- Carolan, Philip
- Carolan, Turlough, (Ó Cearbhalláin, Toirdhealbhach) 1670-1738
- Carolan, Turlough, 1670-1738
- Caroline, Countess of Dunraven, 1790-1870
- Caroline, Countess of Kingston, 1754-1823
- Caroline Amelia Elizabeth, of Brunswick-Wolfenbüttel, queen, 1768-1821
- Carpendale, Thomas, 1786-1817
- Carpenter, John, 1729-1786
- Carpenter, John, d. 1786
- Carpenter, Joshua, 1585-1655
- Carpenter, Mary, 1807-1877
- Carpenter, Patrick c.1870
- Carpenter, Richard Cromwell, 1812-1855
- Carr, Elizabeth, fl.1819
- Carr, George Whitmore, Rev, 1779-1849
- Carr, George Whitmore, Revd, 1779-1849
- Carr, Joe, 1922-
- Carr, John Henry, d.1941
- Carr, Marina, 1964-
- Carr, Michael [real name Maurice Alfred Cohen], 1905–1968
- Carr, Niall, 1665-1710
- Carr, Patrick (d. 1802)
- Carr, Peter, 1882-1963
- Carr, Sir John, 1772-1832
- Carr, Thomas James (‘Tom’), 1900-1999
- Carr, Thomas Joseph, bishop, 1839-1917
- Carragher, Ann, fl. 1923
- Carragher, Charley, d. 1718
- Carragher, Patrick, fl. 1800
- Carragher, Thomas Aloysius, 1901-1984
- Carragher family
- Carragher family see Caraher family
- Carraher, Matthew, d. 1849
- Carraher family see Caraher family
- Carrick, Desmond, 1928-
- Carriera, Rosalba, 1675-1757
- Carrigan, William, 1860-1924
- Carrigan, William, Canon, d. 1924
- Carrigan, William, d. 1924
- Carrigan, William, Fr, 1860-1924
- Carrigan, William, K.C., fl. 1930-1931
- Carrigg family, fl. 1827-c.1930
- Carrington, Charles Edmund, 1897-1990
- Carrol, William Parker, 1776-1842
- Carroll, Adrian, 1983-2013
- Carroll, Anna Ella, 1815-1894
- Carroll, Charles (1723-1783)
- Carroll, Charles, 1702-1782
- Carroll, Charles, 1737-
- Carroll, Charles, 1737-1832
- Carroll, Charles, d. 1737
- Carroll, Deirdre, 1966?-2015
- Carroll, James, -1639
- Carroll, James, 1891-1916
- Carroll, James, d.1938
- Carroll, John, archbishop, 1735-1815
- Carroll, John, bishop, 1735-1815
- Carroll, John T.M., d.1916
- Carroll, Mary Austin, 1835-1909
- Carroll, Mary Catherine, 1885-1983
- Carroll, Patrick, c.1883-1963
- Carroll family
- Carrothers, Jack, fl. 1918
- Carrothers, Nathaniel, 1852-1930
- Carruthers, James, 1784-1860
- Carse, Sam, 1921-1990
- Carsewell, William, fl. 1417-1419
- Carson, Alexander, 1777-1844
- Carson, Ciaran, 1948-
- Carson, Ciaran, 1948-2019
- Carson, Ciaran, b.1948
- Carson, Ciaran Gerard, 1948-
- Carson, Edward Henry
- Carson, Edward Henry, 1854-1935
- Carson, Edward Henry, 1854-1936
- Carson, Edward Henry, 1854–1935
- Carson, Edward Henry, 1854–1935, Baron Carson of Duncairn
- Carson, Edward Henry, Baron, 1854-1935
- Carson, Edward Henry, baron Carson (1854-1935)
- Carson, Edward Henry, baron Carson, 1854-1935
- Carson, Edward Henry, Baron Carson, 1854-1935
- Carson, Harry, fl. 1914
- Carson, Liam, 1962-
- Carson, Matthew, 1903-1920/21
- Carson, Robert, fl. 1903-1924
- Carson, Robert Taylor, 1919-2008
- Carson, Thomas Henry, 1843-1917
- Carson family
- Carsuail, Seon, c. 1522 – 1572
- Carsuel, Seon
- Carswell, John (Séon Carsuel), c.1522–1572
- Carswell, John (Séon Carsuel), c.1522–1572,
- Carte, Richard D'Ogly, 1844-1901
- Carte, Thomas, bap. 1686, d. 1754
- Carter, Edward C., II
- Carter, Elizabeth, 1717-1806
- Carter, James Earl 'Jimmy', b.1924
- Carter, R.W.G. (Bill), 1946-1992
- Carteret, John, earl Granville, 1690-1763
- Carthach, Saint, the younger, d. 636
- Carthage, Saint, d. 639
- Carthy, John, 1972-2000
- Carthy, Susan, 1855-1933
- Carthy, Tom, 1799-1904
- Cartland family
- Cartwright, Thomas, 1535-1603
- Cartwright, Thomas, bishop, 1634-1689
- Carty, Frank J., 1897-1942
- Carty, James
- Carty, Paddy, 1929-1986
- Carty, Robert, 1770-1836
- Carty, Susan, (Mother Praxedes), fl. 1875
- Cary, Arthur Joyce Lunel, 1888-1957
- Cary, Elizabeth, viscountess Falkland, 1585-1639
- Cary, Henry, 1st Viscount Falkland, c.1575 – 1633
- Cary, James Matthew, fl. 1798
- Cary, Joyce,
- Cary, Lucius, 2nd viscount Falkland, 1609x10-1643
- Cary, Thomas Graves, 1791-1859
- Cary family
- Casement, Daniel, fl. 1865
- Casement, family
- Casement, George
- Casement, John, fl. 1865
- Casement, Roger (David), 1864-1916
- Casement, Roger, 1864-1916
- Casement, Roger, Sir
- Casement, Roger David (Sir), 1864-1916
- Casement, Roger David, Sir, 1864-1916
- Casement, Sir Roger David, 1864-1916
- Casement, Roger David, Sir, 1864 1916
- Casey, Albert E., fl. 1971
- Casey, Anne (Nan), b.1934
- Casey, Attracta (née Walsh), fl. 1856
- Casey, Comhghall, b. 1976
- Casey, Eamonn, bishop, 1927-
- Casey, Edward
- Casey, J. S.,
- Casey, John, 1820-1891
- Casey, John, Revd, 1769-1861
- Casey, John Keegan, 1846-1870
- Casey, John Sarsfield, 1846-1896
- Casey, John Sarsfield, 1846-1896,
- Casey, Margaret, 1907-
- Casey, Marion R.
- Casey, Michael, 1752?-1831?
- Casey, Niall, d. 1997
- Casey, Thomas ?-1882
- Casey family
- Casey see Hampson, Walter, 1864/66-1932
- Cash, James, 1853-1890
- Cash, John, 1832-1909
- Cash, Martin, 1810-1878
- Cash, Michael, c. 1832-1880
- Cashman, D. B.
- Cashman, Dan 1872-1930
- Cashman, Denis B., 1842-1897
- Cashman, James, 1879-1916
- Cashman, Nellie, 1845-1925
- Cashman, Tim 1866-1934
- Cassan, Matthew Sheffield, 1803-
- Cassels, Philip, 1862-1944
- Cassian, John, d. c.435
- Cassidy, Desmond, 1933-2023
- Cassidy, Herbert, 1935-2013
- Cassidy, James, 1892-1970
- Cassidy, John, 1860-1939
- Cassidy, Louis Lawrence, 1877-1928
- Cassidy, Noel, d. 1995
- Cassidy, Patrick Sarsfield, 1852-1903
- Cassidy, Philip Patrick, d.2014
- Cassidy, Thomas Francis, OFM, d.1873
- Cassidy, Tommy, c.1933-2015
- Cassin, Barry
- Castiglione, Baldassare, 1478-1529
- Castle (Castles, Cassels, Cassells), Richard, c.1690/95-1751
- Castle (Castles, Cassels, Cassells), Richard, c.1690/95-1751,
- Castle, Richard, 1690-1751
- Castle, Richard, d. 1751
- Castles, William, 1879-1914
- Caswall, Edward, 1814-1878
- Caswell, William Henry, 1895-1940
- Cataldo, Saint
- Cater family
- Cathal, king of Connacht, d.925
- Cathaldus, Saint
- Cathal óg Mac Maghnusa, d. 1498
- Cathcart, Kevin J.
- Cathe, Breccan
- Catherine, II, Empress of Russia, 1729-1796
- Catherine of Alexandria, Saint, d.303/311
- Catherine of Aragon, queen, 1485-1536
- Cathrew family
- Cathróe of Metz, Saint, fl. 900-971
- Cathróe of Metz Saint, fl 900-971
- Catlin, George, 1796-1876
- Cattanach, Lachlan
- Caulfeild, Anna Lucy, countess of Charlemont, d. 1925
- Caulfeild, James, 1st earl of Charlemont, 1728-1799
- Caulfeild, John, Archdeacon,
- Caulfield, James, bishop, d. 1814
- Caulfield, James Alfred, Lt. Col., 1830-1913
- Caulfield, James Edward Geale (1880-1949)
- Caulfield, Richard, 1823-1887
- Caulfield, Toby, Sir, Ist Lord Charlemont, 1565-
- Caulfield, Toby, sir., fl. 1607
- Caulfield, William Talbot McClintock, d. 1907
- Caulfield family
- Caulfield family, earls of Charlemont
- Cavalier, Jean, 1681-1740
- Cavanagh, Bartholomew Aloysius, 1807-1897
- Cavanagh, Bartholomew Aloysuis, Archdeacon, 1821-1897
- Cavanagh, Bernard, d. 1845
- Cavanagh, Catherine Brown
- Cavanagh, Charles Baron, Major-General, b. c 1714, d. 1777
- Cavanagh, Frank, Fr. b.1912
- Cavanagh, George, 1808-1869, see Cavenagh, George, 1808–1869
- Cavanagh, James, d. 1880
- Cavanagh, Jim, Mayor of Goodyear, Arizona, 1941-
- Cavanagh, John (Jack), d. 1819
- Cavanagh, Joseph, fl. 1789-1794
- Cavanagh, Linden George (Jim), 1918-2004
- Cavanagh, Michael, 1822-1900
- Cavanagh, Michael S., 1822-1900
- Cavanagh, Patrick, c.1856-1924
- Cavanagh, Patrick, d. 1581
- Cavanagh, Patrick, Sgt., 1740-1823
- Cavanagh, Thomas, d. 1914
- Cavanagh family
- Cavanaugh, John Joseph, c.1841-
- Cavanaugh, Patrick (1740-1823)
- Cavenagh, George, 1808–1869
- Cavenagh, James, fl.1712-1760
- Cavenagh, Wentworth Odiarne, Col., 1856-1935
- Cavenagh family
- Cavenaugh, Christian (‘Kit’), 1667-
- Cavendish, Frederick Charles, Lord, 1836-1882
- Cavendish, Henry, Sir, 1732-1804
- Cavendish, Sir Henry, 1732-1804
- Cavendish, William, 4th duke of Devonshire, 1720-1764
- Cavendish, William, 5th duke of Devonshire, 1748-1811
- Cavendish, William, 7th duke of Devonshire, 1808-1891
- Cavendish, William, Sir, 1508-1557
- Cavendish, William George Spencer, 6th duke of Devonshire, 1790-1858
- Cavendish-Bentick, William 3rd Duke of Portland, 1738-1809 ; O'Connell, Daniel Charles, Count, 1745-1833 ; Pitt, William, 1759-1806 ; Walsh, Charles Edward, Viscount de Serrant, 1746-1820
- Cavendish family
- Cavendish family, earls and dukes of Devonshire
- Caven family
- Cawley, William, 1954-
- Caxton, William, 1422?-1491
- Ceallachain, Caisil, d. 954
- Ceannt, Eamonn, 1881-1916
- Ceannt, Áine, 1880–1954
- Ceannt, Éamonn (born Kent, Edward Thomas), 1881-1916
- Ceannt, Éamonn, 1881-1916
- Ceannt, Éamonn, 1881-1916 ; Connolly, Seán, 1883-1916 ; Nicholls, Henry (Harry), 1889-1975 ; O'Donovan, Con, d.1965
- Ceannt, Éamonn, 1881–1916
- Cecil, Robert, 1st earl of Salisbury, 1563-1612
- Cecil, Robert, 3rd Marquis of Salisbury
- Cecil, Robert, 1563–1612
- Cecil, Robert Arthur Talbot Gascoyne-, 3rd marquess of Salisbury, 1830-1903
- Cecil, Robert Arthur Talbot Gascoyne-, 3rd Marquess of Salisbury, 1830-1903 ; Chamberlain, Joseph, 1836-1914 ; Darwin, Charles Robert, 1809-1882 ; Darwin, Charles, 1809-1882 ; Disraeli, Benjamin, Earl of Beaconsfield, 1804-1881 ; Gladstone, William Ewart, 1809-1898 ; Parnell, Charles Stewart, 1846-1891
- Cecil, William, 1st baron Burghley, 1520-1598
- Cecil, William, 2nd earl of Salisbury, 1591-1668
- Cecil, William, Lord Burghley, 1520-1598
- Cecil family, earls of Salisbury
- Cellach, bishop
- Cellach, king of Osraige, d.908
- Cellach of Cill Ala (fl. mid-6th century), supposed first Bishop of Killala
- Cellanus (Cella), ? - 706
- Cellini, Alessandro, 1830-88
- Cellius, Erhard, 1545-1606
- Cellán (Cellanus), d. 706
- Cenn-Fáelad mac Ailella, 'sapiens', d. 679
- Cennick, John, 1718-1755
- Cenél Conaill
- Cenél Lóegairi
- Cenél nÉogain
- Ceolfrid, Saint, 642-716
- Cerball (d. 909)
- Cerball, king of Leinster, d.909
- Cernach, Conall
- Cet mac Mátach
- Chabot, Phillippe Ferdinand Auguste de, comte de Jarnac, 1815-1875
- Chadwick, H. M. (Henry Munro), d.1947
- Chadwick, Nora Kershaw
- Chadwick, Nora Kershaw, 1891-1972
- Chaigneau, William, 1709-1781
- Challoner (Chaloner, Challyner), John, c.1515–1581
- Challoner, Luke, 1550-1550-1613
- Challoner, Richard, bishop, 1691-1781
- Chalmers, George, bap. 1742, d. 1825
- Chalmers, George Duff, d.1921
- Chalmers, John, fl. 1857
- Chalmers, Thomas, 1780-1847
- Chaloner, John, 1658-1732
- Chaloner, William Henry, 1914-1987
- Chamberlain, John, 1553-1628
- Chamberlain, Joseph (1836 – 1914)
- Chamberlain, Joseph, 1836-1914
- Chamberlain, Joseph, 1836-1914 ; Gladstone, William Ewart, 1809-1898
- Chamberlain, Joseph, 1836-1914 ; Gladstone, William Ewart, 1809-1898 ; Parnell, Charles Stewart, 1846-1891
- Chamberlain, Joseph Austen, Sir, 1863-1937
- Chamberlain, Nan, d. 1971
- Chamberlain, Robert, b. c 1570, d. 1636
- Chamberlain family
- Chambers, Edmund Kerchever, Sir, 1866-1954
- Chambers, Elizabeth
- Chambers, Francis, 1771-1855
- Chambers, Frederick Price, 1879-1925
- Chambers, George, 1873-1960
- Chambers, John, fl. 1798
- Chambers, William, Sir, 1723-1796
- Chambers family
- Chamney, Anne Rosemary, 1931-2008
- Champagn, Jane, Lady
- Champagn, Josias de Robillard de
- Champagné, Josias, 1673-1737
- Champagné, Marie de la Rochefoucauld de, fl. 1685-1728
- Champagné family
- Champion, Arthur
- Champion de Crespigny, Nancy, 1910-2003
- Chandler, George Henry, 1886-1918
- Chantreau, Pierre-Nicolas (le Citoyen Chantreau), 1741-1808
- Chantreau, Pierre Nicolas, 1741-1808
- Chaplin, Thomas, d.1877
- Chapman, Charles Arthur, 1903-1920
- Chapman, Edward Frederick, fl. 1916
- Chapman, George, 1769-1852
- Chapman, George Robert
- Chapman, Montabue Lowther, Sir, 1808- ; Chapman family
- Chapman, Robert L., 1891-1965
- Chapman, Stanley D., 1935-
- Chapman family
- Chappe d'Auteroche, abbe´, 1728-1769
- Charke, Charlotte, 1713-1760
- Charlemagne, emperor, 742-814
- Charles, -, Fr.
- Charles, comte de la Chaussée, 1753-post 1815
- Charles, Joseph, 1772-
- Charles-Edwards, Thomas
- Charles Edward Louis Philip Casimir, 1720-1788
- Charles I, king, 1600-1649
- Charles I, King, 1600-1649 ; Fiennes, William, 1st viscount Saye and Sele, 1582-1662 ; Pym, John, 1584-1643 ; Russell, Conrad Sebastian Robert, 5th earl Russell, 1937-2004
- Charles I, King of England, 1625-1649
- Charles II, 1661-1700, King of Spain
- Charles II, king, 1630-1685
- Charles II, King of England, 1630-1685
- Charles II, king of Spain, 1661-1700
- Charless, Joseph
- Charles V, Holy Roman Emperor, 1500-1558
- Charles V, King of France 1364-80
- Charleton, Jack, 1935-
- Charley family
- Charlotte, Lady O’Brien, 1781-1856
- Charlotte FitzGerald-de Ros, 20th Baroness de Ros of Helmsley, 1769-1831
- Charlton, William F. D., 1919-1942
- Charlton family
- Charnetskyi, Nicholas, bishop, 1884-1959
- Chart, D. A., 1878-1960
- Chart, David Alfred (1878–1960)
- Charteris, Mary Constance, countess of Wemyss, 1862-1937
- Chartres, George, 1921-2011
- Chartres, John Smith, 1862-1927
- Chase, Corrie Denew, d. 1965
- Chatterton, Georgiana (Henrietta) (née Lascelles), 1806-1876
- Chatterton, Henrietta, Lady, 1806-1876
- Chatterton, Henrietta Georgiana Marcia Lascelles, Lady, 1806-1876
- Chatterton, James, fl 1832
- Chatterton, James Charles, Sir, 1791-
- Chatterton, William, Sir, 1794-1855
- Chaucer, Geoffrey, 1340?-1400
- Chauviré, Roger, 1880-1957
- Chavasse, Judith Isobel, 1867-1935 ; Chavasse, Henry, 1863-1943 ; Somerville, Edith, 1858-1949
- Chavasse, Judith Isobel, nee Fleming, 1867-1935 ; Haythornthwaite, Henrietta, née Fleming, 1968-1954 ; Fitzgerald, Susannah, née Fleming, 1865-1944
- Chearnley, Anthony, c.1715-c.1786
- Chearnley, Samuel, 1717-1746
- Chearnley, Samuel, d. 1746
- Cheevers, Edward, d. 1581
- Cheevers, Walter
- Cheevers family
- Chekhov, Anton Pavlovich, 1860-1904
- Chement, Knut Johgbohm
- Chemin, Cécile
- Chenevix, Helen, 1890-1963
- Chenevix, Richard, 1698-1779
- Chenevix, Richard, bishop, 1696x7-1779
- Chenevix, Richard, bishop of Waterford, 1698-1779
- Chenevix, Richard, bishop of Waterford and Lismore, 1698-1779
- Chenevix Trench, Cesca, 1881-1918
- Chenevix Trench, Cesca, 1881-1918,
Chenevix Trench, Frances Georgiana, see Chenevix Trench, Cesca, 1881-1918,
Trinseach, Sadhbh, see Chenevix Trench, Cesca, 1881-1918
- Chenevix Trench, Frances Georgiana, see Trench, Cesca Chenevix, 1881-1918
- Cheney, Edward, 1803-1884
- Cheney, Oliver, fl. 1682-1685
- Cheney, Robert Henry, 1801-1866
- Cherry, Martin, d. 1880
- Cherry, Richard Robert, d. 1923
- Cherry, Stella, 1961-2020
- Chesney, Alexander, d. 1843
- Chesney, Francis Rawdon, general, d. 1872
- Chester family
- Chesterfield, Lord, 1694-1773
- Chesterton, Gilbert Keith [G. K. C.], 1874–1936
- Chettle, George Hulbert, fl. 1914
- Chetwood, Knightly
- Chetwood-Aiken, Walter, d. 1899
- Chetwood family
- Chever, Nicholas, d. 1309
- Chevers family
- Chichester, Arthur, 1st earl of Donegal, 1606-1675
- Chichester, Arthur, 1st Marquess of Donegall, fl. 1750-1775
- Chichester, Arthur, 5th earl and 1st marquess of Donegall, 1739–1799
- Chichester, Arthur, 5th earl and 1st marquess of Donegall, 1739–1799,
- Chichester, Arthur, baron Chichester of Belfast, 1563-1625
- Chichester, Arthur, Lord, 1808-1840
- Chichester, Arthur, Sir, 1563-1625
- Chichester, Arthur, Sir, 1563-1625.
- Chichester, Frederick Richard, earl of belfast, 1827-1853
- Chichester, George Augustus, 2nd marquis of Donegall, 1769-1844
- Chichester, John Ludford, Lord, 1811-1873
- Chichester-Clark, James, Lord Moyola, 1923-2002
- Chichester family
- Chichester family, earls of Donegal
- Chichester family, the Earls and Marquises of Donegall
- Chilcot, John, Sir
- Child, Alfred Ernest, 1875-1939 ; Clarke, Harry (Henry Patrick), 1889-1931 ; Martyn, Edward, 1859-1923;
- Childers (née Osgood), Mary Alden, 1875-1964
- Childers, Erskine, 1870-1922
- Childers, Erskine Hamilton, 1905-1974
- Childers, Erskine Hamilton, 1905-1974,
- Childers, Erskine Hamilton, 1905–1974
- Childers, Erskine Hamilton, 1905–1974,
- Childers, Hugh C. E.
- Childers, Mary Alden, d. 1964
- Childers, Robert A., d.1996
- Childers, Robert Erskine, 1870-1922
- Childers, Robert Erskine, 1870-1922 ; Green, Alice Sophia Amelia Stopford, 1847-1929
- Childers, Robert Erskine, 1870-1922,
- Chinnery, George, 1774-1852
- Chinnery, George, 1774–1852
- Chinnery family
- Choiseul, Etienne-Francois, duc de, 1719-1785
- Chopin, Frederic, 1810-1849
- Chosny (Shaughnessy), Denis (aka La Garonne), fl. 1613-1673
- Christensen, Eivind Adler, 1890-1935
- Christian O'Conarchy, 1100-1186
- Christie, James, 1730-1803
- Christle, Joe, 1928-1999
- Christmas, William, M.P., c.1798-1867
- Christopher, saint, d.251
- Chubb, Basil, 1921-2002
- Church, Richard, Sir, 1784-1873
- Church family
- Churchill, Jeanette, Lady, 1854-1921
- Churchill, John, 1st duke of Marlborough, 1650-1722
- Churchill, Randolph Frederick Edward Spencer, 1911-1968
- Churchill, Randolph Henry Spencer, Lord, 1849-1895
- Churchill, Winston, 1874-1965
- Churchill, Winston, Sir, 1620-1688
- Churchill, Winston, Sir, bap. 1620, d. 1688
- Churchill, Winston Leonard Spencer, 1874-1965
- Churchill, Winston Leonard Spencer, Sir, 1874-1965
- Churchill family
- Churchyard, Thomas, 1523?-1604
- Cian, son of Máel-muad and king of South Munster, d.1015
- Cianán, of Damliac, bishop, d. 489
- Cianán, Saint, d. 489
- Ciar, d. 681
- Ciarán, Saint, d. c.545
- Ciarán, Saint, d. c. 545
- Ciarán of Saighir, Saint, 500-560
- Cibber, Colley, 1671-1757
- Cinéal Conaill
- Cinéal Eoghain
- Cipriani, Giovanni Battista, 1727-1785
- Clahull, John de, fl.1181
- Clanbrassill, James Hamilton, Earl of, ca. 1691-1758
- Clanchie, Una
- Clancy, Brendan, d.2016
- Clancy, Charles Stearns, 1890-1971
- Clancy, John, 1802-1847
- Clancy, John, ?- c. 1865
- Clancy, John, ?- c.1865
- Clancy, John A, fl.1860-1861
- Clancy, Michael, 1704-1776
- Clancy, Peadar, 1888-1920
- Clancy, Seán, 1901-2006
- Clancy, Thomas, 1748-1814
- Clancy, Tom, 1947-2013
- Clancy, Wille, 1918-1973
- Clancy, William ('Willie'), 1918-1973
- Clancy, Willie, 1918-73
- Clancy, Willie, 1918-1973
- Clancy family
- Clann Aodha Buidhe Uí Néill
- Clann Bhruaideadha ; O'Brien, Barnabas (Bryan, Barnaby), 6th Earl of Thomond, c.1590-1657 ; O'Brien, Henry, 5th Earl of Thomond, d.1639 ; Wyndham, George O'Brien, 3rd Earl of Egremont, 1751-1837
- Clann Cholmáin
- Clann Chuiléin
- Clann Craith
- Clann Cruitín
- Clann tSuibhbne
- Clanricard, earls of
- Clanricarde, earls of
- Clanricarde, Ulick Burke, marquess of, 1604-1658
- Clanricard family (of Galway)
- Clapham, Alfred William, Sir, 1883-1950
- Clapham, John Harold, Sir, 1873-1946
- Clare, Anthony, 1942-2007
- Clare, Elizabeth de, 1294x5-1360
- Clare, Richard de (‘Richard fitz Gilbert’, ‘Strongbow’), a.1127-1176
- Clare, Richard fitz Gilbert de, earl of Pembroke, 'Strongbow', c.1130-1176
- Clare, saint, of Assisi (Chiara Offreduccio), 1194-1253
- Clare, Thomas de, 1244x7-1287
- Clare, Wallace George, 1895-1963
- Claridge, R. T.
- Clark, Andrienne G.
- Clark, Dennis, d. 1993
- Clark, Ernest, Sir
- Clark, George Norman, Sir, 1890-1979
- Clark, George Smith
- Clark, Harry H. F., d. 1974
- Clark, James H., 1818-1913
- Clark, Jonathan Charles Douglas
- Clark, Mathew, d.1735
- Clark, Peter, 1878-1934
- Clark, W.A. (1877-1934)
- Clarke (Crilley), Margaret, 1888-1961
- Clarke (Crilley), Margaret, 1888-1961,
- Clarke, Adam, 1762?-1832
- Clarke, Andy, fl. 1920-1940
- Clarke, Austin, 1896-1974
- Clarke, Benjamin, 1816-1871
- Clarke, David, 1920-2005
- Clarke, Edward Frederick, 1850-1905
- Clarke, Ellen, fl. 1820-1891
- Clarke, family
- Clarke, Francis, M.P., 1857-1939
- Clarke, George, 1661-1736
- Clarke, Harry (Henry Patrick), 1889-1931
- Clarke, Harry (Henry Patrick), 1889–1931
- Clarke, Harry, 1889-1931
- Clarke, Henry James, duke of Feltre, 1765-1818
- Clarke, Howard B., 1940-
- Clarke, James
- Clarke, Jim, d. 1999
- Clarke, Joanna (Jo), 1908-2009
- Clarke, Joseph 1846-1925
- Clarke, Josephine (Josie), (née Stallard) fl.1921-1952
- Clarke, Joshua, 1858-1921
- Clarke, Kathleen (Caitlín Bean Uí Chléirigh), 1878-1972
- Clarke, Kathleen (Caitlín Bean Uí Chléirigh), 1878-1972 ; MacBride, (Edith) Maud Gonne, 1866-1953 ; Markievicz, Constance, Georgine, Countess, 1867-1927
- Clarke, Kathleen, 1878-1972
- Clarke, Liam, d.1941
- Clarke, Margaret, 1888-1961
- Clarke, Marshal, c.1755-1833
- Clarke, Mary, d.1781
- Clarke, Mary Anne, fl. 1880
- Clarke, Maude Violet, 1892-1935
- Clarke, Michael, 1750-1847
- Clarke, Patrick, d. 1845
- Clarke, R.S.J. (Brice), 1929-
- Clarke, Sandy
- Clarke, Seamus, 1914-
- Clarke, Thomas, 1805-1882
- Clarke, Thomas Hal, Mrs., fl. 1900
- Clarke, Thomas James ('Tom'), 1858-1916
- Clarke, Thomas James (Tom), 1858-1916
- Clarke, Thomas James (Tom), 1858-1916 : Kenny, John, 1847-1924
- Clarke, Thomas James (Tom), 1858-1916,
- Clarke, Thomas James (‘Tom’), 1858–1916
- Clarke, Thomas James, 1857-1916
- Clarke, Victor, geological collector
- Clarke, William, 1889-1934
- Clarke, William Gerard, 1913-1989
- Clarke family
- Classon, John, d.1868
- Claudius I, emperor, 10B.C.-54
- Claudius of Turin, fl. 810–827
- Clay, Charles Travis, Sir, 1885-1978
- Clayton, Adam
- Clayton, Benjamin, 1786-1862
- Clayton, Benjamin, 1805-1854
- Clayton, Robert, 1695-1758
- Clayton, Robert, bishop, 1695-1758
- Clayton, Samuel, c.1777-1853
- Clayton, Samuel, c1777-1853
- Clayton family
- Cleaney, Henry William, Bishop of Auckland, 1859-1929
- Clear, Felicity
- Clear, Kathleen, 1913-2010
- Cleary, Anne, b. 1965
- Cleary, Bridget, 1878x9-1895
- Cleary, Bridget, c.1869-1895
- Cleary, Henry William, 1859-1929
- Cleary, Henry William, d. 1929
- Cleary, James, 1892-1968
- Cleary, James Vincent, 1828-1898
- Cleary, Michael, fl. 1895
- Cleary, Michael, Fr.
- Cleary, Thomas Stanislaus, 1851-1898
- Cleary, Vincent, b.1933
- Cleaver, Adelaide, née Pollock, 1886-1939
- Cleaver, Euseby, bishop, 1746-1819
- Cleburne, Patrick Ronayne, 1828-1864
- Cleburne, Patrick Ronayne, 1828–1864
- Cleland (Clealand), James Dowsett Rose, 1767-1852
- Cleland, James,
- Clemens (?of Bavaria), fl.744/45
- Clemens, Samuel Langhorne Clemens see Twain, Mark, 1835-1910
- Clemens Scottus (‘the Irishman’), fl. c.800
- Clemens Scottus, fl. c800
- Clement, Knud Jongbohn, 1803-1873
- Clement, Knut Jongbolm, fl. 1836
- Clement, Simon
- Clements, C. M. L. (Charles Marcus Lefevre), 1904-1996
- Clements, Charles Marcus Lefevre, Lt. Colonel, d. 1996
- Clements, David
- Clements, Gertrude (née Markham), 1842-1931
- Clements, Henry Theophilus, 1728-1785
- Clements, Hill, fl.1812-1838
- Clements, Nathaniel, 2nd earl of Leitrim, 1768-1854
- Clements, Nathaniel, 1705-1777
- Clements, Nathaniel, 1705–1777
- Clements, Nathaniel, b. 1971
- Clements, Robert Birmingham, 4th earl of Leitrim
- Clements, Roy, 1934-
- Clements, William Sydney, 3rd earl of Leitrim, 1806-1878
- Clements family
- Clement VII, anti-pope
- Clement VIII, pope, 1536-1605
- Clement XI, pope, d. 1721
- Clendining, George, 1770-1843
- Clerke, Agnes Mary, 1842-1907
- Clerke, Agnes Mary, 1843-1907
- Clerke, Ellen Mary, 1840-1906
- Clerkin, Patrick, fl.1952-2006
- Clery, Arthur Chanel, d. 1932
- Clery, Arthur Edward, 1879-1932
- Clery, Arthur Edward, 1879–1932
- Clery family
- Clesson, Matthew
- Clibborn family
- Cliffe family
- Clifford, Angela
- Clifford, Ellen, 1856-1939
- Clifford, George, third earl of Cumberland, 1558-1605
- Clifford, Gerard, 1941-2016
- Clifford, Margaret, countess of Cumberland, 1560-1616
- Clifford, Matilda de, Lady, fl. 1315
- Clifford, Robert, fl. 1853-1863
- Clinch, Jammie, fl. 1920
- Clinch, Phyllis, 1901-1984
- Clinton, Bill
- Clinton, Bill, president
- Clinton, Charles, 1690-1773
- Clinton, Charles, fl. 1729
- Clinton, DeWitt, 1769-1828
- Clinton, George (1739-1812)
- Clinton, George, 1739-1812
- Clinton, Mark, 1896?-1920
- Clinton, William Jefferson, 1946-
- Clinton family
- Clive, Edward, 1st Earl of Powis, 1754-1839
- Clive, Edward, Baron Clive of Walcot, fl. 1839
- Clive, Robert, baron Clive, 1725-1774
- Clive, Robert, Lord, Baron Plassey, 1725-1774
- Clohosey, Philip, d.2022
- Clonbrock, Augusta, c.1840-1928
- Cloncurry, Valentine Browne Lawless, 2nd baron, 1773-1853
- Cloney, Seán,
- Cloney, Sheila
- Cloney, Thomas, fl. 1798
- Cloney family
- Clooney, Patrick F., fl. 1862
- Close, Maxwell
- Close, Maxwell Henry, 1822-1903
- Close, Maxwell Henry, 1822–1903
- Close family
- Clossy, Samuel, 1724-1786
- Clotworthy, John, 1st Viscount Massereene, d. 1665
- Clotworthy, John, fl.1646-1665
- Clow, James, 1820-1892
- Clow, William Moffat, 1852-1933
- Clowney, James, c.1866-1956
- Clowney, Joseph, fl.1890-1900
- Clulow, Jimmy, 1914-1995
- Clune, Conor, 1893-1920
- Clune, Patrick Joseph, bishop, d. 1935
- Clune family
- Clune family, Ireland and Australia
- Cluskey, Frank, 1930-1989
- Clyde, Margaret
- Clyn, John, ? - c.1349
- Clyn, John, d. 1349?
- Cnut, king, d. 1035
- Coade, Eleanor, 1733-1821
- Coady, Eleanor, fl. 1809-1828
- Coady, Paddy, d.1985
- Coady, Pat, d.2007
- Coady, Paul, 1942-2021
- Coady, Stephen, d.2006
- Coakley, Jeremiah, 1843-1912
- Coane family
- Coates, Gordon, 1878-1943
- Cobb, Charles, 1781-1857
- Cobbe (née Beresford) Eliza, Lady, 1736-1806
- Cobbe, ?1733–1815?
- Cobbe, Charles, archbishop of Dublin, 1686/7–1765
- Cobbe, Charles, b. c 1866, d. 1765
- Cobbe, Frances Mary Power, 1822-1880
- Cobbe, Frances Power, 1822-1904
- Cobbe, Henry Clermont, 1811-1855
- Cobbe, William, fl. 1738
- Cobbe family
- Cobbett, William, 1763-1835
- Cobbett, William 1763-1835
- Cobden, Richard, 1804-1865
- Cobden, Thomas A., 1794-1842
- Cobden, Thomas Alfred, 1794-1842
- Cobham, Alan John, Sir, 1894-1973
- Cobthach Cóel Breg
- Coburn, Veronica
- Cochrane family
- Cochran family
- Cockatoo, Anne
- Cockburn, George, Sir, 1763-1847
- Cockburn, Gilbert, ca1789-1862
- Cockburn, Patricia, 1914-
- Cockburn, William, 1828-1898
- Cockburn, William J., 1864-1899
- Cockcroft, John Douglas, Sir, 1897-1967
- Cockerell, C. R.
- Cockerell, Charles Robert, 1788-1863
- Cockran, William Bourke (1854-1923)
- Cockran, William Bourke, 1854-1923
- Codd, William, bishop, 1864-1938
- Coddington, Henry-Barry, 1802-1888
- Coddington family
- Codling, Arthur Dean, 1876-1950
- Cody, Brian, 1954-
- Cody, Ed, d. 2011/2012
- Cody family
- Coellen, Franz Arnold
- Coen, Lisa
- Coen, Martin, d. 1997
- Coen, Martin, Fr. 1933-1997
- Coen, Thomas, bishop, d. 1847
- Coen, Thomas, d. 1847
- Coffey, Aeneas, 1780-1852
- Coffey, Brian, 1905-1995
- Coffey, Daniel, d.1797
- Coffey, Denis J., fl. 1940
- Coffey, Denis Joseph, 1865-1945
- Coffey, Diarmid, 1888-1964
- Coffey, George, 1857–1916
- Coffey, Hugh Diarmid James, 1888-1964
- Coffey, John, bishop, d. 1904
- Coffey, Peter, 1876-1943
- Coffey, Tom, d. 1996
- Coffey family
- Cogan, Anthony, 1826-1872
- Cogan, Anthony, Franciscan
- Cogan, Philip, 1750-1833
- Cogan, Seamus, 1893-1920
- Cogan family
- Coghill, Marmaduke, 1673-1739
- Coghill, Nevill, V.C., ?1852-1879
- Coghill, Rhoda Sinclair, 1903–2000
- Coghlan, Dorothy Brigitte, fl. 1720-1739
- Coghlan, James Duff, fl. 1927
- Coghlan, James Peter, 1731?-1800
- Coghlan, Jeremiah, c.1777-1844
- Coghlan, Marcelle Colombe, fl.1718-1739
- Coghlan, Terence de, d.1743
- Coghlan, Timothy Augustine, Sir, 1855-1926
- Coghlan, William, fl. 1924
- Cogitosus fl.650
- Cogitosus fl. c. 650
- Cogley, Fred, 1885-1937
- Cogley, John, b.1927
- Cohalan, Daniel, bishop, 1858-1952
- Cohalan, Daniel, bishop, d. 1952
- Cohalan, Daniel Florence, 1867-1946
- Cohalan, Daniel Florence, 1867–1946
- Cohen, Lionel 1922-200
- Coigly, James, 1761-1798
- Coimin, Michael, poet, 1688?-1720
- Coimín, Micheál, 1676-c.1760
- Coimín, Mícheál, 1676-1760
- Coirpre Cromm, bishop of Clonmacnoise, d.904
- Cokayne, George Edward, 1825-1911
- Coke, Edward, Sir, 1552-1634
- Coke, John, fl. 1636
- Coke, John, Sir, 1563-1644
- Coke family (of County Carlow)
- Coker, John Baptist, fl. 1962
- Colahan, Arthur Nicholas Whistler, 1885-1952
- Colahan, Daniel, 1865-1946
- Colahan, Daniel Florence, 1865-1946
- Colahan, William, 1810-1854
- Colahan family
- Colbert, Con (Cornelius), 1888-1916
- Colbert, Con, 1888-1916
- Colbert, Cornelius ('Con'), 1888-1916
- Colbert, Cornelius (‘Con’), 1888–1916
- Colbert, Dom, 1934-
- Colborne, Cordelia Anne Le Strange, pre-1837-1862
- Colborne, John, 1st Baron Seaton, 1778-1863
- Colbourne family
- Colby, Thomas 1784-1852
- Colby, Thomas Frederick, 1784-1852
- Colclough, Adam, 1650-1732
- Colclough, Caesar, fl.1692-1719
- Colclough, Caesar, fl.1692-1726
- Colclough, Catherine Mary, fl.1797-1803
- Colclough, Dudly, fl.1689-1712
- Colclough, John Henry, 1769–1798
- Colclough family
- Colden, Cadwallader, 1689-1776
- Colden, Cadwallader, 1722-1797
- Cole, Galbraith Lowry, Sir, 1772-1842
- Cole, George Douglas Howard, 1889-1959
- Cole, Grenville Arthur James, 1859-1924
- Cole, Seán, 1903-1922
- Cole, William Willoughby, 3rd Earl of Enniskillen, 1807-1886
- Cole, William Willoughby, 3rd earl of Enniskillen, 1807-1886
- Cole, William Willoughby, third earl of Enniskillen, 1807-1886
- Cole family
- Cole family, earls of Enniskillen
- Coleman, Carole
- Coleman, Jack, 1914-1971
- Coleman, James, 1941-
- Coleman, Kathleen (née Benson), 1919-2015
- Coleman, Kathleen Blake, née Ferguson, Catherine, 1856-1915
- Coleman, Richard, d.1918
- Coleman, Robert, 1748-1825
- Coleman, Simon
- Coleman, Simon, R.H.A., 1916-1995
- Coleman, Willie, 1909-1981
- Coleman family
- Coleridge, Samuel Taylor, 1772-1834
- Coles family
- Coletti, Leo,1939-1945
- Colfer, Andy, c.1864-1925
- Colfer, Billy, 1938-2013
- Colfer, Pat, c.1865-1927
- Colfer family
- Colgan, John, O.F.M., 1592-1658
- Colgan, John, OFM, 1592-1658
- Colgan, Nathan, 1851-1919
- Colgan, Nathaniel, 1851-1919
- Colgan, Nathaniel, 1851-1919
- Colgan family
- Colhoun, Mabel R., 1905-1992
- Colins, Margaret, c.1905
- Colins, Michael, 1890-1921
- Coll, John, b. 1959
- Coll, Vincent, d. 1932
- Collen, William, c.1860-1932
- Collender, Hugh, d. 1890
- Collen family
- Colles, Christopher, 1739-1812
- Colles, William, 1702-1770
- Colles, William, 1702–1770
- Colles family
- Collet, Madeline, fl.1786-1825
- Colleton, family
- Colley, Alfred Leo “Alf”, 1901-1922
- Colley, Esme, Florence Helen, 1920-2006
- Colley, Garrett, fl. 1641
- Colley, Linda
- Colley family
- Colley family ; Byrn, Moses
- Collie, George, 1904-1975
- Collier, Jeremy, 1650-1726
- Collier, Michael, 1780-1849
- Collier, Patrick Fenelon, 1849-1909
- Collier, Peter Fenlon, 1849-1909
- Collier, Thomas Frederick, 1832-1891
- Collier family
- Collingwood, William Gershom, 1854-1932
- Collins, Anthony, 1676-1729
- Collins, David, 1955-2013
- Collins, Dennis, d. 1833
- Collins, Dominic, S.J., 1566-1602
- Collins, Edward Francis, 1807-1872
- Collins, Elma, fl. 1998
- Collins, Francis, d. c.1834
- Collins, G. F., fl. 1904
- Collins, James
- Collins, Jerome (Ó Coileáin, Diarmaid), c1842-1882
- Collins, Jerome J., 1841-1881
- Collins, Jerome Janus, 1841-1881
- Collins, Marianne (née O'Brien), 1855-1907
- Collins, Michae,l 1890-1922
- Collins, Michael, 1879-1959
- Collins, Michael, 1890-1922
- Collins, Michael, 1890-1922 ; De Valera, Éamon, 1882-1975
- Collins, Michael, 1890-1922 ; MacSwiney, Terence James, 1879-1920
- Collins, Michael, 1890-1922 ; O'Connor, Roderick (‘Rory’), 1883-1922
- Collins, Michael, 1890–1922
- Collins, Michael, fl. 1814-1824
- Collins, Michael 1890-1922
- Collins, Michael John, 1815-1896
- Collins, Micheal, 1781-1832
- Collins, Patrick, 1911-1994
- Collins, Patrick A., 1844-1905
- Collins, Patrick Valentine, 1874-1911
- Collins, Robert, Professor, 1900-1975
- Collins, Sharon, 1963 -
- Collins, Sharon, 1964-
- Collins family
- Collinson, Patrick
- Collinson, Peter, 1694–1768
- Collis, Han (Johanna) (née Hogerzeil), 1919-2005
- Collis, Maurice
- Collis, Robert, d. 1975
- Collis, Robert, Professor, 1900-1975
- Collons, Michael, 1890-1922
- Colloton family
- Collyn, John, c. 1411-1484, Dean of Waterford
- Colman, bishop and saint, d. 676
- Colman, bishop and saint, d. 676.
- Colman, Eamon, b. 1957
- Colman, Eamon, b.1957
- Colman, Saint, of Cloyne, 510-601
- Colman Mac Duagh, saint
- Colman mac Luachain, fl. 7th cent.
- Colm Cille (Columba), c.521-597
- Colmcille or Columba, 521-597
- Colmer, George, 1836-1893
- Colmer family
- Colmán (d. 676)
- Colmán, Saint, d. 610
- Colmán, Saint, d. 610?
- Colmán, Saint.
- Colmán Bec
- Colmán Elo of Lynally, c.560-611
- Colmán Már
- Colmán of Lindisfarne, abbot, bishop, d. 676
- Cologan, Bernardo, 1772-1814
- Colohan, John, fl. 1892-1896
- Colombe, John, c.1430-c.1493
- Colpoy family
- Colthurst, George, Sir, fl. 1881
- Colthurst family
- Colum, Mary, 1884-1957
- Colum, Padraic, 1881-1972
- Columba,, Saint, c. 521-597
- Columba, Saint, c.521-597
- Columba, Saint, c. 521-597
- Columba, saint, c.521-597
- Columba, Saint, c.521-597 ; Farannáin, Saint
- Columba, Saint, c.521-597 ; Ó Iceadha, Tomás
- Columba, Saint, c.521–597
- Columbanus (Colmán, Columba), c.540–615
- Columbanus (Columba), c.540-615
- Columbanus, Colmán, Columba, 540-615
- Columbanus, Saint, 543 615
- Columbanus, Saint, 543-615
- Columbanus, Saint, 543?-615
- Columbanus, Saint, 543?-615
Brendan, Saint, (c. 484-c. 577
- Columbanus, Saint, 543?-615?
- Columbanus, Saint, ?543-615
- Columbanus Saint 543 615
- Columba of Terryglass, saint, d.552
- Columba or Colmcille, 521-597
- Columbus, Christopher, 1451-1506
- Colum Cille (Columba), c.521-597
- Colum Cille (Columba), c. 521–597
- Colum Cille, Saint, see Columba, Saint, c.521–597
- Columcille, Saint, see Columba, Saint, c.521–597
- Colum of Terryglass, saint, see Columba of Terryglass, saint, d.552
- Colvill, Alexander, d.1719; Colvill, Alexander, 1699-1777 ; Colvill, Maturine, d. 1781
- Colville, Alexander, fl.1622-1670
- Colville family
- Coman, William, 1900-1968
- Comber family
- Comer, Tommie, 1903-2003
- Comerford, Edmund, d. 1509
- Comerford, Jack, fl. 1930
- Comerford, James, 1817-1902
- Comerford, James, P.P., fl. 1709-1732
- Comerford, James J., 1901-1988
- Comerford, Joe, fl. 1977-1993
- Comerford, John
- Comerford, John, 1598-1667
- Comerford, John, d. 1832
- Comerford, Michael, c.1890-1916
- Comerford, Nicholas, 1610-1665
- Comerford, Patrick, 1586–1652
- Comerford, R. V. (Richard Vincent)
- Comerford, Teresa, Mother
- Comerford, Thomas, fl. 1543
- Comerford, William, d. 1539
- Comerford family
- Comgall, Saint, d. c.601
- Compton-Smith, Geoffrey Lee, 1889-1921
- Comyn, David, 1854-1907
- Comyn, James, 1921-
- Comyn, John, bishop, d. 1212
- Comyn, John, Bishop, d. 1212
- Comyn, Michael, 1798-1854
- Comyn, Peter
- Comyn family
- Conall, Saint
- Conall Cernach (‘the triumphant’), legendary hero of the Ulaid
- Conall Corc
- Conan, family
- Conaty, Nicholas, d. 1886
- Conba-McInerney, Alice
- Conba family
- Concanen, Richard Luke, bishop , 1747–1810
- Concannen, Richard Luke, Bishop, fl. 1800
- Concannon family
- Conchobar
- Conchobar mac Donnchada, high-king of Ireland, d. 833
- Conchobar Mac Nesa
- Conchobar Mac Nessa
- Condon, Edward O'Meagher, fl. 1905
- Condon, John, d. 1915
- Condon, Michael, 1817-1902
- Condon, Thomas, 1822-1907
- Condon, Thomas, J. 1850-1943
- Condon, Thomas Joseph, 1850-1943
- Condon family
- Condron, Michael Andrew, 1890-1975
- Conefrey, Fr. Peter, 1880-1939
- Conefrey, Peter, 1880–1939
- Conefrey, Tom, Fr, 1837-1917
- Coney, Florence, bishop, 1561-1629
- Coneys, Thomas, fl. 1849
- Confrey, John Edward, 1875-1947
- Congreve, Ambrose, 1907-2011
- Congreve, William, 1670-1729
- Congreve family
- Coningham, Alice
- Coningham, Arthur
- Coningsby, Thomas, Baron Coningsby of Clanbrassil and earl of Coningsby, 1657-1729
- Conlan, Patrick, OFM, 1940-
- Conlon, Bernard, 1888-
- Conlon, Fred, 1943-2005
- Conmee, John, S. J., 1847-1910
- Conmy, John, d. 1911
- Conn, George, d.1640
- Conn, Hugh, Rev., fl. 1741
- Conn, Hugh, Revd, fl. 1741
- Connairche, Gilla Críst Ua, bishop, d. 1186
- Connaughton, Maurice, Monsignor, 1889-1967
- Connaughton, Peter, 1837-1894
- Conn Cétchathach "of the Hundred Battles"
- Conn Cétchathach, d. 157
- Conneen, Michael, fl. 1834
- Conneff, Thomas Patrick, 1866-1912
- Connell, James, 1852-1929
- Connell, Jim, 1852-1929)
- Connell, Kenneth Hugh, 1917-1973
- Connell, Richard, fl. 1685
- Connellan, Owen
- Connellan, Thaddeus, d. 1854
- Connelly, Charles (Carlos), fl 1783-1794
- Connelly, Irene, fl. 1930
- Connelly, Thomas, OP, fl. 1783-1800
- Connery, Margaret (‘Meg’), 1879-1956
- Connery family
- Connick, John, fl. 1755
- Connole, Thomas, c.1889-1920
- Connolly, Alice (née Rice), d.2014
- Connolly, Arthur T. (1853-1933)
- Connolly, Cornelius, fl. 1916-1936
- Connolly, Denis, b. 1965
- Connolly, Hugh
- Connolly, Jackie, d.1926
- Connolly, James, 1868-1916
- Connolly, James, 1868–1916
- Connolly, James, d.1916
- Connolly, James 1868-1916
- Connolly, John (Fr Clement), 1875-1963
- Connolly, John, Bishop, fl. 1815-1825
- Connolly, John, fl. 1798
- Connolly, John, fl. 1798-1799
- Connolly, Joseph, 1885-1961
- Connolly, Joseph, d. 1961
- Connolly, Joseph William, 1893-1956
- Connolly, Louisa, Lady, fl. 1758-1786
- Connolly, Mary, 1892-
- Connolly, Maureen Glynn, d. 1998
- Connolly, Michael J., d. 1893
- Connolly, Mona, 1891-1904
- Connolly, Owen
- Connolly, Paddy, 1930-2006
- Connolly, Patrick J., 1875-1951
- Connolly, Peter, Fr, 1927-1987
- Connolly, Philomena, 1948-2002
- Connolly, Roddy, 1901-1980
- Connolly, Sean, 1882–1916
- Connolly, Sean J.
- Connolly, Seán
- Connolly, Seán, 1882-1916
- Connolly, Seán, 1890-1921
- Connolly, William, 1662-1729
- Connolly, William, fl. 1718
- Connolly-O'Brien, Nora, 1893-1981
Connolly, James, 1868-1916
- Connolly family
- Connor (O'Connor), Bernard, c.1666–1698
- Connor, Bernard, 1666?-1698
- Connor, Bernard, c.1666-1698
- Connor, James, 1879-1916
- Connor, Jerome (1874–1943)
- Connor, Jerome, 1874-1943
- Connor, Kate, fl.1830
- Connor, Roger
- Connor, Samuel, 1861-1927
- Connor family
- Connors-Walsh family
- Conolly, Anne, Lady, (née Wentworth), 1713-1797
- Conolly, Henry Valentine, c.1806-1855
- Conolly, John Augustus1829-1888
- Conolly, Katherine, c.1662-1752
- Conolly, Louisa Augusta, Lady, 1743-1821
- Conolly, Thomas
- Conolly, Thomas, 1738?-1803
- Conolly, Thomas, 1823-1876
- Conolly, Thomas, fl. 1865
- Conolly, Thomas, MP, 1823-1876
- Conolly, Thurloe, 1918-?
- Conolly, William, 1662-1729
- Conolly, William, 1662–1729
- Conolly, William, Jr, 1706-1754
- Conolly-Carew family
- Conolly family
- Conor, William, 1881-1968
- Conrad, Joseph, 1857-1924
- Conraí, Micheál, 1919-
- Conron family
- Conroy, George, Bishop, 1832-1878
- Conroy, John Charles (‘Charlie’), 1906–1985
- Conroy, Sheila, 1918-
- Conroy, Timothy 1883-1935
- Conroy family
- Conry, Florence, archbishop, 1561-1629
- Conry, Florence, archbishop of Tuam, 1561-1629
- Conry, Florence, bishop, 1561-1629
- Conry Florence, bishop, 1561-1629
- Conway, Denis, bishop, 1722-1796
- Conway, Edward, 2nd Viscount Conway and 2nd Viscount Killultagh, bap. 1594, d. 1655
- Conway, Kate (Birdie), alias Ernie Delrita
- Conway, Kit, 1897-1937
- Conway, Margaret, 1898-1974
- Conway, Michael, Fr, fl. 1839
- Conway, William, 1913-1977
- Conway, William John, cardinal, 1913-1977
- Conway, William John, cardinal, 1913–1977
- Conway-Piskorski, Méadhbh, 1929-2013
- Conway family
- Conway family, viscounts Conway and Killultagh
- Conwell, Eugene, fl. 1805
- Conwell family
- Conwill, James, 1861-1936
- Conwill, John, 1802-1880
- Conybeare, C.A.V., 1853-1919
- Conyngham, David Power, 1825-1883
- Conyngham, Katherine, Jane and Mary
- Conyngham, Patrick, 1959
- Conyngham, William Burton, 1733-1796
- Conyngham family
- Coogan, Amanda, b. 1971
- Coogan, M. Jane
- Coogan, Tim Pat, 1935-
- Coogan, Tim Pat, fl. 1980-2000
- Cook, Benjamin, 1817-1889
- Cook, James, 1728-1779
- Cook, James, captain, 1728-1779
- Cook, Robert Finlayson, 1946-2005
- Cook, William (Billy), 1909-1992
- Cooke, Adolphus
- Cooke, Alan, fl.1636
- Cooke, Alice
- Cooke, Ambrose, d. 1888
- Cooke, Anne
- Cooke, Barrie, 1931-2014
- Cooke, David
- Cooke, Frederick,
- Cooke, Henry, 1788-1868
- Cooke, Henry, 1788–1868
- Cooke, Henry, fl. 1808-1810
- Cooke, John, 1831-1879
- Cooke, Mattieu de, 1658-1740
- Cooke, Robert, 1821-1882
- Cooke, Roger Francis, 1826-1879
- Cooke, William, d.1915
- Cook family
- Coolahan, John, 1941-2018
- Cooley, Mike, fl. 1998
- Cooley, Thomas, 1740-1784
- Cooley, Thomas, d. 1784
- Coombes, James, 1924-2000
- Coombes, James, Father, 1924-2000
- Coombes, James, Fr, 1924-2000
- Coombs, Elizabeth, 1817-1875
- Cooney, Andy Dr., 1897-1968
- Cooney, Dudley Levistone, 1932-2019
- Cooney, Edward, 1867-1960
- Cooney, John, d. 1996
- Cooper, Alfred Duff, 1st viscount Norwich, 1890-1954
- Cooper, Anthony Ashley, 3rd earl of Shaftesbury (1671–1713)
- Cooper, Anthony Ashley, 3rd earl of Shaftesbury, 1671-1713
- Cooper, Austin, 1759-1830
- Cooper, Bryan Ricco, 1884–1930
- Cooper, Catherine
- Cooper, Edward Joshua, 1798-1863
- Cooper, James Fenimore, 1789-1851
- Cooper, John, 1905-1921
- Cooper, Joseph, 1702-1786
- Cooper, Joseph, d.1786
- Cooper, Martha Johnson, 1857-
- Cooper, Samuel, 1750-1831
- Cooper, Thomas G.
- Cooper, Thomas Mackay, Baron Cooper of Culross, 1892-1955
- Cooper family
- Cooper family of Cooperhill
- Coote, Algernon Charles Plumptre, 12th Baronet, 1847-?1920
- Coote, Charles, 1606-1661
- Coote, Charles, 1738-1800
- Coote, Charles, earl of Bellomont, 1738–1800
- Coote, Charles, Sir, 1st Earl of Mountrath 1610-1661
- Coote, Charles, Sir, d. 1642
- Coote, Charles Henry, 1754-1823
- Coote, Eyre,1762 -1823
- Coote, Eyre, bap. 1759, d. 1823
- Coote, Eyre, Sir, 1726-1783
- Coote family
- Coote family, earls of Bellamont
- Cope, Alfred William, Sir, 1877-1954
- Cope, Robert, M.P., fl. 1750-17532
- Cope, Sir Alfred William (‘Andy), 1877-1954
- Cope, William, fl. 1804
- Cope family
- Copinger, John, fl. 1606
- Copland, Thomas, fl.1870
- Copley, Clara (Ma), c.1868-1949
- Copley, Elizabeth Mary, 1801-1887
- Copperwhite, Diana, b. 1969
- Coppin, William, 1805-1895
- Coppinger, Walter, Sir, d.1639
- Coppinger, William, bishop, d. 1830
- Coppola, Francis Ford, 1939-
- Coquebert de Montbret, Charles-Etienne, 1755-1831
- Corballis family
- Corbally family
- Corbet, William, 1779-1842
- Corbett, Anselm
- Corbett, James Francis, 1834-1912
- Corbett, James J., 1866-1933
- Corbett, James J., 1866-1933,
- Corbett, P. F., 1913-1999
- Corbett, Thomas
- Corbett family
- Corbington, Robert, SJ
- Corby, William, Fr., 1833-1897
- Corcoran, Bridie, d. 2002
- Corcoran, James, 1818-1882
- Corcoran, Kathleen, 1921-2015
- Corcoran, Michael (1827-1863)
- Corcoran, Michael, 1827-1863
- Corcoran, Moira, 1916-2005
- Corcoran, Patrick
- Corcoran, Patrick, 1879-1920
- Corcoran, Timothy, 1872-1943
- Corcoran, Timothy, S.J., 1872-1943
- Corcoran, Timothy, SJ, 1872-1943
- Corcoran, William W. (1798-1898)
- Coree, James, c. 1846-1919
- Coree family
- Corelli, Arcangelo, 1653-1713
- Corey, Tony
- Corish, Brendan, 1918-1990
- Corish, Brendan, 1918–90
- Corish, Patrick J.
- Corish, Patrick J., 1921-2013
- Corish, Richard, 1886–1945
- Corkery, Daniel (1883–1961)
- Corkery, Daniel, 1878-1964
- Corkery, John Canon, d. 1995
- Corkery, Simon, 1919-
- Corkery, Tom, fl. 1980
- Corless, Catherine
- Cormac, king of Cashel, 846-908
- Cormac, son of Art
- Cormack, Daniel, d. 1858
- Cormack, William, d. 1858
- Cormac Mac Airt, King of Ireland, fl. 227-260
- Cormac Mac Airt, King of Ireland, fl. 227-260.
- Cormac mac Ciolionáin, Saint, d. 908
- Cormac mac Cuilennáin, d. 908, king-bishop of Munster
- Cormac mac Cuilennáin, d. 908, king-bishop of Munster.
- Cormac na gCeann
- Cormac son of Art
- Cormac ua Liatháin, saint, fl. late 6th cent.
- Cormican (Ó Cormacain) family
- Cormick, John, fl. 1798
- Cornforth, John, 1937-
- Cornwall, Robert, Captain fl.1795-1811
- Cornwallis, Charles, 1st Marquess Cornwallis, 1738-1805
- Cornwallis, Charles, 1st marquis and 2nd earl Cornwallis, 1738-1805
- Cornwallis, Charles, Sir, 1555-1629
- Coroticus, warlord, fl. 400-463
- Coroticus, Warlord, fl. 400-463 ; Patrick, Bishop, Saint, 373-c.463
- Corr, Thomas, fl. 1738-1739
- Corre, John Fitzwilliam (John Corr), mayor of Waterford, fl.1441-1466
- Corre, Richard, bishop of Lismore (d. 1308)
- Corr family
- Corrigan, Dominic, Sir, 1802-1880
- Corrigan, Dominic John, 1802–1880
- Corrigan, Douglas, fl. 1938
- Corrigan, Mairead, fl. 1976 ; McKeown, Ciaran, fl. 1976 ; Williams, Betty, 1943-
- Corrigan, Michael Augustine, archbishop, 1839-1902
- Corrigan, Nancy, 1912-1983
- Corrigan, Patrick, c.1746-1831
- Corrigan, Peter, fl 1949
- Corry, Martina, ?
- Corry, Richard Lowry, 4th earl of Belmore, 1835-1913
- Corry, Thomas Charles Steuart,1825/6–1896
- Corry, Thomas Hughes, 1860-1883
- Cosbie, James, 1845-1905
- Cosby, Francis, 1510-1580
- Cosby, Pole
- Cosby family
- Cosgrave, Bridget (née Nixon), 1855-1934
- Cosgrave, Constantine, fl.1836-1870
- Cosgrave, J., fl. 1740
- Cosgrave, Liam, 1920-
- Cosgrave, Liam, 1920-2017
- Cosgrave, Patrick, Mother, 1863-1900
- Cosgrave, W(illiam) T(homas), 1880-1965
- Cosgrave, W.T. (William Thomas), 1880-1965
- Cosgrave, William Thomas, 1880-1965
- Cosgrave, William Thomas, 1880–1965
- Cosgrave family
- Cossart, David
- Cossart, David, bap.1623-1683
- Cossart, Salomon
- Cossart family
- Cosslett, Charles Grimké, 1775-post 1815
- Costello, Edward, 1888-1916
- Costello, John, architect
- Costello, John A. (John Aloysius), 1891-1976
- Costello, John A. (John Aloysius), 1891–1976
- Costello, John Aloysius, 1891-1976
- Costello, Michael, d. 1986
- Costello, Michael Joseph, 1904-1986
- Costello, Thomas, bishop, 1786-1831
- Costello, Timothy, 1788-1873
- Costelloe, Michael A., fl.1852-1867
- Costelloe, Michael P.L., 1924-2012
- Costelloe, Robert, 1943-1974
- Costello family
- Costigan, Christopher, 1810-1835
- Costigan, Ethna Byrne, fl. 1969
- Cotter, James, 1689-1720
- Cotter, James, c.1630-1705
- Cotter, James, d.1705
- Cotter, James, d. 1720
- Cotter, John, 1872-1939
- Cotter, Louise
- Cotter, Maud, b. 1954
- Cotter, P.J., 1939-2012
- Cotter family
- Cottingham family
- Cottington, Francis, 1st Baron Cottington, 1579?-1652
- Cotton, Albert Wesley, 1890-1968
- Cotton, Caroline Frances, fl.1837
- Cotton, Donald Charles Francis, 1950-2022
- Cotton, Henry, 1789-1879
- Cotton, Leonard, fl. 1719
- Cotton, Robert Bruce, Sir, 1571-1631
- Cotton, Robert Bruce, Sir, 1571–1631
- Cotton, Samuel George, 1823-1900
- Cottrell, Eamon, 1933-
- Cottrill, Matthew, 1764?-1828
- Coubertin, Charles-Pierre de Fredy, baron, 1863-1937
- Coughlan, Anthony Jer, d.2015
- Coughlan, Mary, 1956
- Coughlan, Mary, fl.1939-1983
- Coughlan, Timothy, d. 1928
- Coulson, Denis J., 1912-1992
- Coulter, family
- Coulter, George, 1807-1902
- Coulter, Henry, c. 1829-1911
- Coulter, John, d. 1923
- Coulter, Samuel, 1755-1803
- Coulter, Thomas, 1793-1843
- Coulter, William Alexander, fl. 1936
- County Offaly
- Coupland, Reginald, 1884-1952
- Courci, John de, d. 1219?
- Courcy, John de, c.1155–1219
- Courcy family
- Courtenay, Ellen, fl. 1817-1832
- Courtenay, William, 10th earl of Devon, d. 1859
- Courtenay, William Reginald, 11th earl of Devon, 1807-1888
- Courtenay family
- Courtenay family, earls of Devon
- Courtney, Camillus, OFM
- Courtney, David, pilot
- Courtney, Michael, 1901-1993
- Courtois, Bernard, 1777-1838
- Cousins, James Henry, 1873-1956
- Cousins, Margaret, 1878-1954
- Cousins, Margaret Elizabeth (née Gillespie), 1878-1954
- Cousins, Margaret Elizabeth, 1878-1954
- Cousser, Johann Sigismund, 1660-1727
- Coutts, Angela Burdett, Baroness, 1814-1906
- Coutts, Angela Georgina Burdett-, 1814-1906, Baroness Burdett-Coutts
- Cowan, Edward Porter, Sir, c.1842-1890
- Cowan, James, 1846-1936
- Cowan, Peadar, 1903-1962
- Cowan, Peter, 1903-1962
- Cowan, Thomas Conolly, 1776-1856
- Cowell, Edward Byles, 1826-1902
- Cowen, Brian, 1960-
- Cowen, Brian, b. 1960
- Cowen, Joseph, 1829-1900
- Cowley, Kevin P., fl. 2000
- Cowley, Robert, d. 1546?
- Cowley, Walter
- Cowper, Charles, 1834-1911
- Cowper, Francis Thomas de Grey, seventh Earl Cowper, 1834-1905
- Cowper, Harriet, c.1770-1847
- Cowper, K. Mary, fl.1963-1973
- Cowyck, Rowland, fl.1560-1587
- Cox, Arthur, 1891-1965
- Cox, Gerard, b. 1954
- Cox, James, c.1723-1800
- Cox, Jill, d. 2010
- Cox, Jill, d. 2010
Hoade, Julie
- Cox, Kathleen, fl. 1930
- Cox, Lemuer, 1736-1806
- Cox, Liam, 1908-2003
- Cox, Lori
- Cox, Richard, 1650-1733
- Cox, Richard, 1702-1766
- Cox, Richard, Sir, 1650-1733
- Cox, Richard, Sir, 1702-1766,
- Cox, S. A. G.
- Cox, Samuel Alfred, fl.1895
- Cox, Walter, c.1770–1837
- Cox family
- Coyle, Anthony, bishop, d. 1801
- Coyle, Daniel Eneas, Revd 1803-1868
- Coyle, Eithne (Anne), 1897-1985
- Coyle, James E., Fr., d. 1921
- Coyle, Kathleen,
- Coyle, Liam, 1968-
- Coyle, Patrick
- Coyne, Bernard, bishop, 1854-1926
- Coyne, Edward Joseph, 1896-1958
- Coyne, Paddy, 1886-1966
- Coyne, William, fl. 1816
- Crabb, Richard, fl.1745-1777
- Crabb, Shirley, 1937-2013
- Cracht, Pieter de, fl.1648-1662
- Craghead, Robert, 1633-1711
- Craig (Craige), Robert, d.1748
- Craig, C. H. B.
- Craig, Isaac John
- Craig, James
- Craig, James (1871-1940)
- Craig, James, 1st viscount Craigavon, 1871-1940
- Craig, James, 1st Viscount Craigavon, 1871-1940
- Craig, James, 1st Viscount Craigavon, 1871-1940,
- Craig, James, 1818-1899
- Craig, James, 1871-1940
- Craig, James, ? - 1641
- Craig, James, Sir, 1871-1921
- Craig, John Duncan (1830–1909)
- Craig, Maurice, 1919-2011
- Craig, Samuel, 1897-post 1986
- Craig, Sir James. 1870-1940
- Craig-Martin, Michael, b. 1941
- Craig-Martin, Michael, b.1941
- Craigen, Jessie Hannah, c.1835-1899
- Craig family
- Craik, Dinah Maria (née Mulock), 1826-1887
- Crake, Francis William, d.1920
- Cramer (Kramer), Tobias von, fl.1629-1684
- Cramer family
- Cramillion, Bartholomew (fl. 1753-1772)
- Cramp, Rosemary
- Crampton, John Fiennes Twisleton, 1805–1886
- Crampton, Philip, 1777-1858
- Crampton, Philip, d.1792
- Cranat, Saint
- Crane, Charles Paston, 1858-1940
- Crane, Eva
- Crane, Walter, 1845-1915
- Cranfield, Lionel, first earl of Middlesex, 1575–1645
- Cranny family
- Cranston, Robert, fl. 1868-1880
- Cranwell, Guy Butler, 1896-
- Craufurd, Robert, 1764-1812
- Craughan, Gillychrist, fl.1671
- Crawford, Alexander, 1876-1940
- Crawford, Alexander Robert
- Crawford, Fred
- Crawford, Frederick, Major, fl. 1914
- Crawford, Henry Saxton, 1868-1927
- Crawford, Hugh, c.1853-1916
- Crawford, Isabella Valancy, 1850-1887
- Crawford, Isabella Valancy, 1850?-1887
- Crawford, Lindsay, 1905-1923
- Crawford, Lindsay, d. 1945
- Crawford, Mabel Sharman, 1820-1912
- Crawford, Robert, 1831-1914
- Crawford, Robert Lindsay
- Crawford, Robert Lindsay ., fl. 1922
- Crawford, W. H. (William Henry)
- Crawford, W. H., (William Henry), 1932-
- Crawford, W. H., fl. 1970-1980
- Crawford, William, 1739x40-1800
- Crawford, William Horatio, 1812×1818-1888
- Crawford, William Monod, 1872-1941
- Crawford, William Sharman, 1780-1861
- Crawford, William Sharman, 1780-1861 ; Sharman, William, 1731-1803 ; Crawford, James Sharman, 1812-1878 ; Crawford, Mabel Sharman. 1820-1912
- Crawford, William Sharman, 1781-1861
- Crawford, William Sharman, c.1739-1800
- Crawford family
- Crawford Neil, James, 1887-1916
- Creagh, Garrett O'Moore, Sir, 1848-1923
- Creagh, John, 1870?-1947
- Creagh, John, c.1870-1947
- Creagh, John, Fr., 1870-1947
- Creagh, Peter, d. 1705
- Creagh, Richard, bishop, 1525?-1585
- Creagh-Hickey, John, 1844-1913
- Creaghe, John, 1841-1920
- Crean, Eugene, 1854-1939
- Crean, Thomas J., Major, V.C., 1873-1923
- Crean, Tom, 1877-1938
- Crean family
- Creaser family
- Creaser family (of Townrath)
- Creedon, David
- Cregan, Donal Francis, 1911-1995
- Cregan, Dónal, 1911, 1995
- Cregan, Dónal, 1911-1995
- Cregan, Maria Isabella, 1868-post 1916
- Cregan, Martin, 1788-1870
- Cregan, Máirín, 1891-1975
- Creighton family
- Cremen, Stephen : Larkin, William J.
- Cremin, Cornelius (‘Con’) Christopher, 1908–87
- Cremin, Cornelius Christopher, 1908-1987
- Cressy, Robert, Sir, d. c.1638/9
- Crichton, F. E. (Frances Elizabeth or "Effie"), 1877-1918
- Crimthann mac Énnai, king of Leinster, 443-483
- Crinnion, Patrick, f.1972-1973
- Crispin, saint, d.c.286
- Croce, Paul Jerome
- Crockett, David, Colonel, 1784-1836
- Crockett family (of Raphoe [County Donegal])
- Croft, James, Sir
- Crofton, Francis George (1838-1900)
- Crofton, Francis George, 1838-1900
- Crofton, Walter Frederick, Sir, 1815-1897
- Crofton, Zachary, 1626?-1672
- Crofton family
- Crofton family (of Roscommon)
- Crofts, Christopher, c.1645-1712
- Crofts, Freeman Wills, 1879-1957
- Crofts, George, c.1640-1698
- Crofts, William, c.1648-1726
- Crogan, George (d. 1782)
- Croghan, Alan, 1968-
- Croghan, Davis George, 1832-1890
- Croghan, Stephen
- Croke, Fionnaula
- Croke, Isabella, d. 1888
- Croke, James, 1827-1889
- Croke, Nellie, d. 2001
- Croke, Sr Joseph, c.1825-1888
- Croke, Thomas, Archbishop of Cashel and Emly, 1824-1902
- Croke, Thomas William, 1823-1902
- Croke, Thomas William, 1823-1902, catholic archbishop of Cashel
- Croke, Thomas William, Archbishop of Cashel and Emly, 1823-1902
- Croke family
- Croker, Henry, fl.1793-1814
- Croker, John Wilson, 1780-1854
- Croker, John Wilson, 1780-1857
- Croker, Richard (Boss), 1841-1922
- Croker, Richard, 1841-1922
- Croker, Thomas Crofton, 1798-1854
- Croker family
- Crolly, George, Revd.
- Crolly, William, bishop, 1780-1849
- Crolly William, bishop, 1780-1849
- Cromer, George, bishop, d. 1543
- Cromie, Robert, 1855-1907
- Cromie, Thomas, c.1790-1815
- Cromie family
- Cromien family
- Crommelin, Louis, 1652-1727
- Crommelin family, 1783-1967
- Cromwell, Henry, 1628-1674
- Cromwell, Henry, 1628–1674
- Cromwell, Oliver, 1599-1658
- Cromwell, Oliver, 1599-1658 ; Fairfax, Thomas, 3rd Baron Fairfax of Cameron, 1612-1671
- Cromwell, Oliver, 1599-1658,
- Cromwell, Oliver, 1599–1658
- Cromwell, Richard, 1626-1712
- Cromwell, Sara-Jane,
- Cromwell, Thomas, c. 1485 – 1540
- Cromwell, Thomas, earl of Essex, 1485?-1540
- Cromwell, Thomas, earl of Essex, c.1485-1540
- Cromwell family
- Cronan, Saint, fl. 599-665
- Crone, David, b. 1937
- Crone, John Smyth, 1858-1945
- Cronin, Anthony
- Cronin, Christie
- Cronin, Don
- Cronin, Edmund (‘Ned’) John, 1897–1948
- Cronin, Elizabeth, 1879-1956
- Cronin, Geoff
- Cronin, Henry, 1874-1920
- Cronin, John, b. 1966
- Cronin, Michael
- Cronin, Patrick Henry 1846-1889
- Cronin, Philip Patrick Henry, 1846-1889
- Cronin, Tony, d. 2001
- Cronán, Saint
- Crooke, William (1848-1923)
- Crooks family
- Crookshank, Anne, 1927-2016
- Crookshanks, John, 1708-1795
- Crosbie, alias Godly, Thomas, d.1767
- Crosbie, David, fl.1641-1653
- Crosbie, Edward William, Sir, d. 1798
- Crosbie, Lindsey Talbot, 1844?-1913
- Crosbie, Paddy, 1913-1982
- Crosbie, Patrick
- Crosbie, Richard, 1755-
- Crosbie, Richard, 1755-1824
- Crosbie, Richard, 1756-1824
- Crosbie, Richard, 1756?-1824
- Crosbie, Theodosia, Lady, fl. 1746
- Crosbie, William Talbot, fl. 1844-82
- Crosbie, William Talbot, fl. 1867
- Crosbie, William Talbot, fl. 1881
- Crosbie family
- Crosbie Pierce, Sir
- Crosby, Piers, Sir, fl. 1590-1646
- Croskery, Samuel Maxwell West, 1847-1933
- Cross, Eric, 1903-1980
- Cross, Jimmy, fl. 1930-1950
- Cross, Philip Henry Eustace, d. 1888
- Crossan, Willie, d. 1981
- Crosse, Brigid, 1882-1979
- Cross family
- Crossfield, Fanny
- Crossfield, Georgia
- Crossfield family
- Crosthwaite, John J., 1794-1884
- Crosthwaite, John Joseph, 1794-1884
- Crotty, Elizabeth, 1885-1960
- Crotty, James, c.1845-1898
- Crotty, Raymond, 1925-1994
- Crotty, Thomas James, O.P., 1867-1930
- Crotty family
- Crowe, Henrietta, d.1800
- Crowe, James, c.1712-1774
- Crowe, John, d. 1876
- Crowe, Martin, d.1918
- Crowe, Richard Robert, b.1728
- Crowe, Thomas, d. 1876
- Crowe, William, Revd.
- Crowe family
- Crowley, Brian, 1964-
- Crowley, Dan, fl. 1865-70
- Crowley, family
- Crowley, John Fr. 1891-1940
- Crowley, Peter O'Neill, fl. 1833-1867
- Crowley, Theodore, 1910-90,
- Crowley, Walter
- Crowley family
- Crowly, Miles, fl. 1760
- Crowther, Mary, fl. 1880
- Crozier, Francis Rawdon Moira, 1796-1845
- Crozier, Frank Percy, 1879-1937
- Crozier, Robert, c.1788 - 1852
- Crozier, Thomas Andrew, 1906-1943
- Crozier, William, 1930-2011
- Cruise, (Crawes, Cruce, Crues), George, fl. 1574-1594
- Cruise family
- Cruise O'Brien, Máire, 1922-
- Crumley, Patrick, D.L., M.P., 1839-1922
- Crummey, Frank, 1936-
- Crumpe, Francis
- Crumpe, Samuel, 1766-1796
- Crushell, Patrick
- Crushell family
- Cruso, Mary Thalassa Alford, 1909-1997
- Crónán, fl.7th cent., of Roscrea
- Cubitt, Alan
- Cubitt, Sir William, 1785–1861
- Cuchullainn
- Cudahy, John, fl. 1930
- Cuellar, Capitan, fl. 1588
- Cueticaus, or Cnet...?
- Cuffe, Charlotte Isabel Wheeler, 1867-1967
- Cuffe, J.A.F. 1876-1957
- Cuffe, John, 2nd Lord Desart, fl. 1730-1767
- Cuffe, Lady Charlotte Wheeler, 1867-1967
- Cuffe, Martin, fl. 1641
- Cuffe, Maurice
- Cuffe, Michael
- Cuffe family
- Cuffe family, earls of Desart
- Culbertson, Eric, 1954-2013
- Culhane, Thomas F., 1891-1969
- Culhane, Thomas J., 1934-
- Cullean, Anthony
- Cullen, Bill, 1942-
- Cullen, Cardinal Paul, 1803-1878
- Cullen, Charles, 1896-1923
- Cullen, Charles, b. 1939
- Cullen, Denis, fl. 1800
- Cullen, Elise, b.1913
- Cullen, family
- Cullen, Hannah, d.1874
- Cullen, Jack, 1916-2009
- Cullen, James, S. J., 1841-1941
- Cullen, James A., 1841-1921
- Cullen, James Aloysius, 1841-1921
- Cullen, James P., 1945-
- Cullen, John, 1914-1982
- Cullen, John, d. 1891
- Cullen, Kate, d. 1913
- Cullen, L(ouis) M(ichael), 1932-
- Cullen, L. M. (Louis Michael), 1932-
- Cullen, L. M. (Louis Michael), b. 1932
- Cullen, Louis Michael, 1932-
- Cullen, Luke, 1793-1859
- Cullen, Mary
- Cullen, Mary ; Mac Curtain, Margaret
- Cullen, Michael, 1946-
- Cullen, Michael, b. 1946
- Cullen, Paddy, 1916-
- Cullen, Patrick Francis, b. c.1875
- Cullen, Paul, 1803-1878
- Cullen, Paul, archbishop of Dublin
- Cullen, Paul, cardinal, 1803-1878
- Cullen, Paul, Cardinal, 1803-1878
- Cullen, William, 1914x15-1967
- Cullen family
- Cullens, Mickeen, c.1880-1956
- Culleton, ?, b.1912
- Culleton, Dermot (Pye), 1940-
- Cullinan, Frederick J., 1845-1913
- Cullinan, John 1852-1920
- Cullinan, Patrick Maxwell, d.1895
- Cullinane, Gussie, b. 192?
- Cullinane, Séamus, 1933-2002
- Cullinmore, Daniel, 1804-1889
- Cullinmore, Joseph, fl. 1867
- Culmann, Carl, 1821-1881
- Cummian (Cummíne, Cumméne) Foto (‘the long’), of Clonfert, d. 661/2
- Cummian, fl c.633
- Cumming, Mary, fl. 1815
- Cumming, William Gordon Gordon-, Sir, 1848-1930
- Cummins, Catherine, fl. 1920
- Cummins, Harry, 1917-2003
- Cummins, Harry, c.1917-2003
- Cummins, Henry, d.1928
- Cummins, Henry, fl.1928-1946
- Cummins, Janie Millar, 1895-1987
- Cummins, Maryanne, c.1883-1971
- Cummins, Pat, d.2009
- Cummins, Pauline
- Cummins, Thomas, Canon, fl.1910-1943
- Cummins family
- Cumméne (Cummíne, Cummian) Find (‘the white’), Abbott of Iona, d. 669
- Cumméne (Cummíne, Cummian) Find (‘the white’), d. 669
- Cumméne, abbot of Iona, fl. 669
- Cundún, Seán (Seaghán), 1740fl–1776fl
- Cunha, Catherine da (née Browne), 1682-1764
- Cunha, Luis da, 1662-1749
- Cuninghame, Robert, 1st Baron Rossmore, 1726-1801
- Cunliffe, Marcus Falkner, 1922-1990
- Cunnane, Francis, d.1923
- Cunning, Rita
- Cunningham, Daniel John, 1850-1909
- Cunningham, David Brechin, 1880-1961
- Cunningham, Elizabeth Margaret, 1872-1941
- Cunningham, George
- Cunningham, James Gilbert, fl 1885
- Cunningham, John, Canon, 1856-1935
- Cunningham, Joseph, 1877-1965
- Cunningham, Martin ('Neighbour'), 1886-1966
- Cunningham, Mary, fl. 1890-1907
- Cunningham, Nathaniel, 1768-
- Cunningham, Paddy, 1905-1963
- Cunningham, Patrick
- Cunningham, Patrick d.1774
- Cunningham, Philip, fl. 1798
- Cunningham, Samuel Knox, 1909-1976
- Cunningham, Terence P., 1922-1986
- Cunningham, Timothy, d. 1789
- Cunningham, Waddell, 1729-1797
- Cunningham, Waddell 1729-1797
- Cunningham, William, 4th earl of Glencairn, 1480-1548
- Cunningham, William, fl.1825-1828
- Cunningham family
- Cunninghamj, Robert Oliver, 1841-1918
- Curley, Hugh, Monsignor, d.1985
- Curley, James, S.J., 1796-1889
- Curley, Michael, 1885-1917
- Curley, Walter, d. 1970
- Curling, Edward, fl. 1832-1874
- Curling family
- Curll, Edmund, 1675-1747
- Curll, Edmund , c.1675-1747
- Curoe, Patrick, Rev. d.1873
- Currall, Percy Frank, 1870-1954
- Curran, C.P. (Constantine Peter), 1883-1972
- Curran, Constantine Peter, 1886-1972
- Curran, James, d. 1863
- Curran, John Adye, fl. 1857
- Curran, John Philpot, 1750-1817
- Curran, Lily
- Curran, Marta, c.1862-1945
- Curran, Michael, 1880-1960
- Curran, Michael, fl. 1914-1918
- Curran, Michael, Msgr, fl. 1914-1918
- Curran, Michael J., Monsignor fl.1916
- Curran, Sarah, 1782-1808
- Curran, Thomas Bartholomew, 1870-1929
- Curran family
- Currey, Chetwode Hamilton, 1847-1883
- Currey, Francis Edmund, 1814-1896
- Currey family
- Currie, Austin
- Curry, Catherine Ann
- Curry, Eugene, d. 1862
- Curry, John, 1702?–1780
- Curry, Martin, d.2017
- Curry, Pat, 1887-1958
- Curtin (Cardell), Alma, 1847-1938
- Curtin, -, Superintendent, d. 1931
- Curtin, Alma Cardell, 1847-1938
- Curtin, Danny, 1948-2003
- Curtin, Jeremiah, 1835-1906
- Curtin, John, 1885-1945
- Curtin family
- Curtis, Edmund, 1881-1943
- Curtis, Edmund, 1881-1943,
- Curtis, Horace Augustus, 1891-1968
- Curtis, John, 1794-
- Curtis, Lionel George, 1872-1955
- Curtis, Patrick, d. 1832
- Curtis, Robert, S. J., 1852-1893
- Curtis, William, 1746-1799
- Curwen, Hugh, bishop, c.1500-1568
- Curwen, John Christian, 1756-1828
- Curwen, John Christian, 1756–1828
- Cusack, Captain, fl.1624
- Cusack, Cyril, 1910-1993
- Cusack, Dónal Óg, b.1977?
- Cusack, Edward, c.1546-1598
- Cusack, family
- Cusack, John, 1918-2004
- Cusack, John, d.1626
- Cusack, Margaret Anna, 1829-1899
- Cusack, Margaret Anne, 1832-1899
- Cusack, Michael, 1847-1906
- Cusack, Michael, 1847–1906
- Cusack, Michael, 1947-1906
- Cusack, Michael 1847-1906
- Cusack, Paul, fl.1916-1921
- Cusack, Thomas, Lord Chancellor of Ireland, c.1490-1571
- Cusack, Walter, d. after 1389
- Cusacke, John, fl. 1630-1640
- Cusack family
- Cussack family
- Cust, Aileen, 1868-1937,
- Cust, Aleen, 1868-1937
- Cust, Aleen Isabel, 1868-1937
- Cust family
- Cuthbert, bishop and saint, c. 635 687
- Cuthbert, bishop and saint, c.635-687
- Cuthbert, Saint, d.687
- Cuthbertson family
- Cybi, Saint, c.483-c.555
- Cynog, Saint, fl. 544
- Czira, Sidney Gifford, 1889-1974
- Cædmon, poet, fl. 680
- Céitinn, Seathrún (Keating, Geoffrey), c.1580-1644 : Raiftearaí, Antaine (Ó Reachtabhra, Antoine; Raftery, Anthony), 1799-1835 :
- Céitinn, Seathrún, c.1580-c.1644, see Keating, Geoffrey (Céitinn, Seathrún), c.1580-c.1644
- Céitinn, Seathrún, fl. 1500-1535
- Cérisy, Jacques Richier de
- Césaire, Aimé, 1913-
- Cóemgen, saint, 498?-618?
- Cólogan, Bernardo, 1772-1814
- Cú-Chuimne d. 747
- Cú-Chulainn
- Cúan (d. 771/788)
- Cú Chuimne
- Cú Chuimne of Iona
- Cú Chulainn
- Cú Chulainn,
- Cúisín, Ádhamh, fl c. 1400
- Cúndún, Pádraig Phiarais, 1777-1857
- Cúnún, Risteard, fl.1850
- D'Aguilar, George Charles, Sir, 1784-1855
- D'Alton, Annie (née Mulhall), 1903-1983
- D'Alton, Annie, née Mulhall, 1903-1983
- D'Alton, John, fl. 1845
- D'Alton, John Francis, Cardinal, 1882-1963
- D'Alton, Louis, 1900-1951
- D'Annunzio, Gabriele Prince of Montenevoso, 1863-1938
- D'Arcy, Brian
- D'Arcy, Fergus A., 1943-
- D'Arcy, George Abbas Kooli, Colonel, 1818-1885
- D'Arcy, Margaretta, 1934-
- D'Arcy, Maureen Campbell, 1920-1994
- D'Arcy, Michael, 1812-1880
- D'Arcy, Patrick, Count, 1725-1779
- D'Arcy family
- D'Esca, Antoine, c.1732-1784
- d'Eu, Raoul, fl. 1337
- d'Hervey, Benedict, fl.1706-1731
- D'Houet, Marie Madeleine, 1781-1858
- D'Israeli, Benjamin, 1766-814
- D'Olier, Isaac, fl.1667-1744
- D'Olier, Isaac, fl.1733-1790
- D'Olier, Jeremiah, fl.1745-1817
- D'Olier family
- d'Orsay, Alfred Guillaume Gabriel Grimod, comte d'Orsay, 1801-1852
- d'Éon de Beaumont, Charles-Geneviève, 1728-1810
- D'Ésterre, John, d. 1815
- da Caravaggio, Michelangelo Merisi 1571-1610
- Dacre, William, 4th baron Dacre, 1500-1563
- Dady family
- Dagg family
- Dagobert I, c. 603-639
- Dagobert II, c. 650-679
- Daguerre, Louis Jacques Mandé, 1787-1851
- Daiken, Leslie Herbert, 1912-1964
- Daillon, Benjamin de, d. 1726
- Dakad, Joseph, d. 1964
- Daley, Victor J., 1858-1905
- Dallas, Alexander Robert Charles, 1791-1869
- Dallas, George, 1922-
- Dallat, Cahal A., 1921-2007
- Dallat, Michael, bishop, 1925-2000
- Dallat, Michael, bishop, d. 2000
- Dallán Forgaill, c. 530-598
- Dalrymple, -, Lt. Gen., fl. 1797
- Dalton, Charlie (Charles Francis), 1903-1974
- Dalton, Dick, fl. 1921
- Dalton, Eleanor Mary, d.1947
- Dalton, Emmet, 1898-1978
- Dalton, Gustavus Tuite, 1811-1879
- Dalton, James, 1834-1919
- Dalton, John, 1766-1844
- Dalton, Jonathan, b. 1977
- Dalton, Joseph, S. J., 1817-1905
- Dalton,Richard, Count, d.1790
- Dalton, Tim
- Dalway, John, d.1618
- Daly (Ó Dálaigh), John (Seán), 1800-78
- Daly, Anna Marie (née Birmingham), c.1896-1960
- Daly, Anthony, d. 1820
- Daly, Bernard, 1858-1920
- Daly, Cahal Brendan, bishop, 1917-
- Daly, Cahal Brendan, cardinal, 1917-2009
- Daly, Charles, 1907-1997
- Daly, Charles P., d. 1890
- Daly, Charlie, d. 1923
- Daly, Charlie, d. 1923; Enright, Daniel, d.1923; Larkin, Seán, d.1923; O'Sullivan, Timothy
- Daly, Dan, 1873-1937
- Daly, Denis, 1747-1791
- Daly, Edel
- Daly, Edward
- Daly, Edward, 1891-1916
- Daly, Emily Lucy de Burgh, 1859-1935
- Daly, Emily Lucy de Burgh, fl. 1912-16
- Daly, Eugene, 1883-1965
- Daly, Fr, c.1792-1875
- Daly, Frank
- Daly, James (alias Jack Hart),1887-1917
- Daly, James, 1832-1900
- Daly, James, 1856-1942
- Daly, James, 1887-1917
- Daly, James, c.1840-1911
- Daly, James, d.1920
- Daly, James, fl. 1840s-1850s
- Daly, John, 1845-1916
- Daly, John, 1845–1916
- Daly, John, 1881-1915
- Daly, John J., 1880-1969
- Daly, John James (John Joseph), 1880–1969
- Daly, John Joseph, c.1822-1875
- Daly, Kitty
- Daly, Mary, d. 1903
- Daly, Mary, née McDonald, c.1829-1888
- Daly, Michael, fl.1917-1922
- Daly, Miriam, 1928-1980
- Daly, P. T. (Patrick Thomas), 1870-1943
- Daly, Patrick Thomas, 1870–1943
- Daly, Paul, 1859-1945
- Daly, Paul, b. 1966
- Daly, Peter, 1788-1868
- Daly, Peter, 1788/9–1868
- Daly, Peter, 1788?-1868
- Daly, Rev. Robert, 1783-1872
- Daly, Richard, 1750-1813
- Daly, Richard, 1758-1813
- Daly, Robert, bishop of Cashel, 1783-1872
- Daly, Robert, bishop of Cashel, Waterford and Lismore, 1783-1872
- Daly, Robert Thompson, 1896-1917
- Daly, Stephen, d. 1619
- Daly, Stephen, fl. 1909
- Daly, Thomas Joseph, 1884-1969
- Dalyell, Tam, fl. 1649
- Daly family
- Damer, Joseph, c.1629-1720
- Damer, Joseph, c.1630-1720
- Damer family
- Damhnat, Saint
- Danaher, Kevin, 1913-2002
- Danaher, Kevin, 1913-2002, see Ó Danachair, Caoimhín
- Danaher, Peter, 1929-2000
- Dangerfield, George Bubb, 1904-1986
- Daniel, James, d.1847
- Daniel, John, fl. 1796-1799
- Daniel, Samuel, 1562x3-1619
- Daniel, William
- Daniel, William, archbishop of Tuam, 1570–1628
- Dannenbaum, Jed
- Danu, Irish goddess
- Darby, Deborah, d. 1810
- Darby, John Nelson, 1800-1882
- Darby, Mildred (née Dill), fl.1890-1922
- Darby, Mildred (writing as Andrew Merry), 1867-1932
- Darcy (D'Arcy), Patrick, 1725–1779
- Darcy, Ailbhe, 1981-
- Darcy, James Reagh, fl.1641-1663
- Darcy, Maud, fl.1519-1550
- Darcy, Patrick, 1598-1668
- Darcy, Patrick, d.1668
- Darcy, Patrick, d. 1668
- Darcy, William
- Darcy, William, Sir, c.1460-1540
- Darcy. John, 1785–1839
- Darcy family
- Dardis family
- Darerca, Saint, d. 517
- Dargan, Edward
- Dargan, Ena, fl.1930-1966
- Dargan, Thomas, fl. 1905-1956
- Dargan, William, 1799-1867
- Dargan, William, 1799–1867
- Dargan family
- Darius the Great, c550-486 BC
- Darley, Elizabeth Olivia, 1829?-1907
- Darley, Frederick (Alderman), b.1764
- Darley, Frederick, jnr (1798-1872)
- Darley, Frederick, jnr, 1798-1872
- Darley, Frederick Matthew, 1830-1910
- Darley, George, 1795-1846
- Darley, George, 1795–1846
- Darley, Henry, 1800?–1883
- Darley, John Richard, bishop of Kilmore, Elphin and Ardagh, 1799-1884
- Darley, Moses, d.1754
- Darley family
- Darlington, Joseph, S. J., 1850-1939
- Darragh, Thomas, 1834-post 1895
- Darragh, Thomas, fl. 1876
- Darragh family
- Dartasso, Janico, d. 1426
- Darwin, Charles, 1809-1882
- Darwin, Charles, 1809-1882,
- Darwin, Charles, 1809–1882
- Darwin, Charles 1809-1882
- Darwin, Charles Robert, 1809-1882
- Dashkova, Ekaterina, 1743-1810
- Daudet, Alphonse, 1840-1897
- Daunt family
- Davey, J. Ernest
- David, bishop and saint, d. 589x601
- David, earl of Huntingdon, 1152-1219
- Davidson, Alexander, d. 1856
- Davidson, Bill, d.1940
- Davidson, Charlie, fl.1920-1939
- Davidson, Colin, b. 1968
- Davidson, Colin, b.1968
- Davidson, James Samuel, 1877-1916
- Davidson, James Walsh(e), d. 1921
- Davidson, James Walsh(e), Dr., d. 1921
- Davidson, William
- Davidson family
- Davies, Donald, fl. 1970
- Davies, Eleanor, Lady, d. 1652
- Davies, John, Sir
- Davies, John, Sir, 1569-1626
- Davies, John Henry, 1838-1909
- Davies, Mervin
- Davies, Moya Llewelyn (née Mary O'Connor), 1881-1943
- Davies, Oliver, 1905-1986
- Davies, Robert Rees, Sir, 1938-2005
- Davies, Rowland, 1649-1721
- Davies, Sarah Emily, 1830-1921
- Davies, Seymoiur George Pilkington, b.1860
- Davies, Sir John, 1569-1626
- Davies, Thomas W., c.1811-1890
- Davies, Walter, c.1700-1763
- Davies, William, 1805-1859
- Davies family
- Davin, Daniel Marcus, 1913-1990
- Davin, Maurice, 1842-1927
- Davis (Davies), John, d. 1667
- Davis, Bridget, fl. 1850
- Davis, Brigid, ?1881-1954
- Davis, Eliza, fl. 1846
- Davis, Eugene, 1857-1897
- Davis, Francis, 1810-1855 ; Wallace, Sir Richard, 1818-1890 ; Barbour, John Doherty, 1824-1901 ; Rea, John, 1822-1881 ; Maguire, John Francis, c.1815-1872 ; Johnston, William of Ballykillbeg, 1829-1902
- Davis, Helen, 1947-2012
- Davis, Jack, fl. 1980s
- Davis, John, fl. 1916-1920
- Davis, John, fl. 1979
- Davis, John T., 1947-
- Davis, Mary, 1954-
- Davis, Sam (d. 1863)
- Davis, Thomas, d. 1915
- Davis, Thomas, Osborne 1814-1845
- Davis, Thomas Osborne, 1814-1845
- Davis, William
- Davis, William J.
- Davis-Goff, Sarah
- Davis family
- Davison, David, fl.1819-1824
- Davison, Emily Wilding, (1872-1913)
- Davison, Maeve, née de Burgh, b. 1926
- Davison, Rosanna, 1984-
- Davison, Thomas, Rev., 1830-1922
- Davison, Thomas, Revd, 1830-1922
- Davison, Treasa, d.2001
- Davison family
- Davitt, Eileen, fl.1937
- Davitt, Michael, 1846-1906
- Davitt, Michael, 1846-1906 ; Ferguson, John, 1836-1906
- Davitt, Michael, 1846-1906,
- Davitt, Michael, 1846–1906
- Davitt, Michael, 1950-2005
- Davitt, Michael 1950-2005
- Davoren, James, fl. 1877-1922
- Davys, Mary, 1674-1732
- Davys family
- Dawe, Gerald, 1952-
- Dawney family
- Dawson, Anna Maria, 1770-1820
- Dawson, Augusta, Countess Dartrey, 1823-1887
- Dawson, Barbara,
- Dawson, Charles, 1781-1835
- Dawson, George
- Dawson, George, 1927-2004
- Dawson, Hannah, fl. 1933
- Dawson, John,1st Earl of Portarlington, 1744–1798
- Dawson, John, 2nd Earl of Portarlington, 1781-1845
- Dawson, Joshua, 1660–1725
- Dawson, Muriel, 1897-1974
- Dawson, Richard, 1st earl of Dartrey, 1817-1897,
- Dawson, Richard, 1st earl of Dartrey, 1817-1897.
- Dawson, Richard, baron Cremorne & 1st earl of Dartry, d. 1897
- Dawson family
- Dawson family, earls of Portarlington
- Dawtrey, Nicholas, d. 1601
- Day, John Godfrey Fitzmaurice, d. 1938
- Day, Martin, d.1861
- Day, Robert, 1746-1841
- Day, Robert, 1836-1914
- Day, Robert, d. 1841
- Day, Robert, Jr, fl.1870
- Day, Susanne Rouvier, 1876–1964
- Day, Susanne Rouviere, 1876-1964
- Day family
- de Aguilar, Ana Ludovina, 1794-1883
- Deakin, James Aubrey, 1874-1952
- de Anchieta y Díaz de Clavijo, José, (Joseph of Anchieta),
1534-1597)
- Deane, Charles Anthony, 1796-1848
- Deane, Edmond, 1647-1717
- Deane, Eliza, d.1851
- Deane, Isabel (née Mitchell) (Ida), 1879-1917
- Deane, Lucy
- Deane, Raymond, 1953-
- Deane, Seamus
- Deane, Seamus, 1940-2021
- Deane, Sir Thomas Manly, 1851-1933
- Deane, Thomas, Sir, 1792-1871
- Deane, Thomas Manly, 1851-1933
- Deane, Thomas Newenham, 1827-1899
- Deane, Thomas Newenham, 1828-1899
- Deane, Thomas Newenham, 1828–1899
- Deane, Thomas Newenham, Sir, 1828-1899
- Deane, Thomas Newenham, Sir 1828-1899
- Deane, Thomas Newenham, Sir 1828-1899,
- Deane Thomas Newenham Sir, 1828-1899
- Deans, John, c.1907/9-1945
- Dease, Edmund Gerald, 1829-1904
- Dease, Edmund James Charles, 1861-1945
- Dease, Thomas, bishop of Meath, d. 1652
- Dease, Thomas, Bishop of Meath, d. 1652
- Dease, Thomas, d. 1652
- Dease family
- Deasy, Annie
- Deasy, Henry Hugh Peter, 1866-1947
- Deasy, Joe, fl. 1950
- Deasy, Joe 1922-2013
- Deasy, Liam (1896–1974)
- Deasy, Liam, 1896-1974
- Deasy, Mary, 1914-1978
- Deasy, Timothy, Captain, 1838/41-1880
- Deasy, Timothy, fl. 1867
- Deasy family
- De Balzac, Honoré, 1799-1850
- De Barra, Dáibhí (Barry, David; Dáth an Ghleanna), 1757/8–1851
- de Barra, Dáibhí, 1757/8-1851
- de Barra, Dáibhí, 1758-1851
- de Barra, Dáibhídh, d. 1617 ; Ó Bruadair, Dáibhidh
- de Barra, Leslie (Price, Mary), 1893-1984
- de Barra, Mícheál
- de Barry, John, c.1265-1330
- De Basterot, Florimond, Count, d. 1904
- de Bayouse, Bogo
- de Beaumont, Charles-Édouard, 1821-1888
- de Beaumont, Gustave, 1802-1866
- de Beaumont, Gustave 1802-1866
- De Beer, Esmond Samuel, 1895-1990
- de Bellièvre, Pomponne, Chancellor of France (1529–1607)
- de Bereford, Richard
- de Bermingham, William, d.1332
- de Bermingham family
- De Bhailís, Colm, d. 1906
- De Bhaldraithe, Tomás, 1916-1996
- de Bhaldraithe, Tomás, 1916-1996
- de Bhaldraithe, Tomás Mac Donnchadha, 1916-1996
- De Bhál, Pádraig, c.1778-1834
- de Bhál, Pádraig, c.1778-1834
- de Bhál,Pádraig, c.1778-1834
- De Blacam, Aodh
- de Blacam, Aodh, 1891-1951
- De Blacam, Aodh, 1891-1951
- de Blaghd, Earnán, see Blythe, Ernest, 1889-1975
- De Boisseleau, marquis, d.1698
- de Bovet, Marie-Anne, (née Bovet, Anne Marie), 1855-1924
- de Breffny, Brian, Baron, 1931-1989
- de Bromhead family
- de Brun, Tadhg
- de Bréadún, Déaglán
- De Brún, Bríd Bean, d. 1998
- De Brún, Pádraig, 1889-1960
- De Brún, Pádraig, 1889–1960
- de Brún, Seosamh, 1883-1968
- de Buinbhíol (Bonfield), Séamus fl.1770
- De Buitléar, Éamon, 1930-
- De Buitléar, Éamon, 1930-2013
- de Buitléir,Nóirín, 1921-2016
- de Burca, Máirín, 1938
- de Burca, Proinnsias, 1904-1996
- de Burca, Proinnsias, 1904-1996,
- De Burca, Seamus, 1912-2002
- de Burgh, Richard Óg, 2nd Earl of Ulster, 1259-1326
- De Burgh, Ulick, 1802-1874
- De Burgh, Ulick John, Marquis of Clanricarde, 1802-1874
- de Burgh, William
- De Burgh, William, c.1164-1206
- De Burgh family
- De Burgo
- De Burgo, Augustine Gibbon, 1613-1676
- De Burgo, Ronald, d. 1590
- de Burgo, Walter, d.1271
- De Burgo, William
- De Burgo, William, d. 1205
- De Burgo, William see De Burgh, William
- De Burgo-O'Malley family
- De Burgo family
- de Burgo family
- de Búrc, Riocard, Earl of Longford
- de Búrca, Feargus (Frank), 1895–1987
- de Búrca, Feargus, 1895-1987
- de Candolle, Alphonse, 1806-1893
- de Capel-Brooke family
- de Carew, Robert, 1195-1245
- De Carrillo, Luis, condre de caracena, fl. 1606
- de Chateaubriand, François-René, Vicomte, 1768-1848
- De Chenu, (Roger) Noël, 1924-2002
- Declan, (Déclán) fl.5th/early 6th cent.
- Declan, Saint
- Declan of Ardmore, Saint
- De Clare, Isabel
- de Clere, Nicholas
- de Cocis, Thomas, master, fl.1279-1300
- DeCoeur, Robert, 1877-1935
- de Cogan family
- de Costentin, Geoffrey, fl. 1200
- de Courcy, John, 1160-1219
- De Courcy, John, 1717-
- de Courcy-Wheeler, Harry, 1872-
- de Coëtivy, Prigent, 1399-1450
- de Crescentiis, Petrus, fl.1306,
- De Cueller, Fransicso, fl. 1589
- de Cuéllar, Francisco, 1562-16??
- De Daillon, Benjamin, 1630-1709
- Deddis, Thomas, d.1917
- de Druhull, Thomas, ? - c. 1216
- Dee, John, 1527-1608
- de Earley, John, 1176 - 1229
- Deegan, Columbanus, OFM, c. 1925-2007
- Deenihan, Jimmy
- Deeny, James, fl. 1946-48
- Deeny, James Andrew, 1906–1994
- Deery, Hugh, 1884-1978
- Deesan, Seán (Brother Columnbanus), c.1925-
- Deevey, Teresa, 1894-1964
- Deevy (Dee) family
- Deevy, Teresa, 1894-1963
- De Feypo family
- de Finglas, Roger, d.1316
- Defoe, Daniel, 1661?-1731
- de Fulbourn, Stephen, bishop of Waterford (d. 1288)
- Degas, Edgar, 1834-1917
- de Gaulle, Charles, 1890-1970
- De Geneville, Geoffrey
- De Girardin, Patrick Piers, 1672-1762
- degli Alighieri, Durante called Dante, c.1265 – 1321
- De Gree, Pieter Balthasar, 1751-1789
- De Grey, Thomas Philip, 2nd earl of, 1781-1859
- De Groot, Francis, 1888-1969
- de Hindeberg, Piaras, 1912-82
- de Hindeberg, Piaras,1912-82
- De Hindeberg, Piaras, SJ, 1912-1982
- de Hindeberg, Risteard (Henebry, Richard), 1863-1916
- de Hindeberg, Risteard, 1863-1916
- de Hindenberg, Piaras, 1912-1982
- Dehnel, Heinrich
- de hÍde, Dubhghlas (Hyde, Douglas)
- De hÍde, Dubhghlas, 1860–1949
- De hÓir, Nóra, fl. 1916
- de hÓir, Siobhán
- de hÓir, Siobhán (née Agnes Joan Burns), 1932-2020
- De hÓir, Siobhán, d.2020
- De hÓir, Éamonn, fl. 1916
- de Hóra, Tomás, 1796-1864
- Deighton, Joseph C., 1832-1932
- Deignan, Thomas, 1897-1976
- Deirdre
- Deirdriu
- De Jubainville, Henri d'Arbois
- De Lacey, Walter, 1172?-1241
- De la Chapelle family
- de la Cruz, Sor Juana Inés, O.S.H. (Sister Joan Agnes of the Cross), 1651-1695
- de Lacy, Hugh, ?- 1186
- de Lacy, Hugh, Baron, d. 1186
- De Lacy, Hugh, Baron Lacy, d. 1186
- de Lacy, Hugh II, c.1176-c.1242
- de Lacy, Hugh II, earl of Ulster, 1176?-1242
- de Lacy, John, d.1318
- de Lacy, Walter, 1166-1241
- de Lacy, William Gorm
- De Lacy family
- De la Fouleresse, Jean, fl. 1690
- Del Aguila, Don Juan
- Delahanty, Ed, d. 1903
- Delahoyd, Albert, 1841-1905
- Delahoyde, Albert, 1841-1905
- Delahunt family
- Delahunty, William, fl. 1600-1624
- Delamaine, Richard, fl. 1642-1654
- Delamain family
- Delaney, Daniel Joseph, fl.1882-1933
- Delaney, Eamon, fl. 1987-1995
- Delaney, Edward
- Delaney, Edward, 1930-2009
- Delaney, James
- Delaney, James G. (Jim), 1916-2000
- Delaney, James G., 1916-2000
- Delaney, Jim, b.1916
- Delaney, Jim, b.1916 ; Johnson, Patsy
- Delaney, John, 1883-1956
- Delaney, John, SJ
- Delaney, Joseph, c.1936-2018
- Delaney, Mary, 1700-1788
- Delaney, Máire, 1945-2002
- Delaney, Nicholas, d. 1834
- Delaney, Patrick B. (1845-1924)
- Delaney, Ronnie, b.1935?
- Delaney, Tom, 1947-1972
- Delaney, William, 1849-1916
- Delaney, William, bishop, 1804-1886
- Delaney family
- Delany, Daniel, 1747-1814 (Bishop of Kildare and Leighlin)
- Delany, Daniel, bishop, 1747-1814
- Delany, Daniel, bishop, 1747–1814
- Delany, Daniel, bishop, d. 1814
- Delany, James G., 1916-2000
- Delany, Mary, 1700-1788
- Delany, Mary, née Granville, 1700-1788
- Delany, Morris, c.1730-1763
- Delany, Patrick, 1685?-1768
- Delany, Patrick, d.1768
- Delany, William, 1832-1895
- Delany, William, 1835-1924
- Delany, William, bishop of Cork, 1804-1886
- Delany, William, S. J., 1835-1924
- Delany, William, S.J., 1835–1924
- Delany family
- Delap, A. D., fl. 1929
- Delap, John, fl. 1729
- Delap, Maude Jane, 1866-1953
- De la Poer, Nigel Kevin, 1941-1998
- De la Poer Beresford, Louisa Anne, Marchioness of Waterford, 1818-1891
- De la Poer family
- Delargy, Diarmuid, b. 1958
- Delargy, J. H.
- Delargy, J. H. (James Hamilton), 1899-1980, see Ó Duilearga, Séamus, 1899-1980
- Delargy, James Hamilton, 1899-1980
- De la Salle, Jean Baptiste, 1651-1719
- de la Tocnaye, Jacques-Louis de Bougrenet, 1767-1823
- Delin (Dillon), Alice, c.1782-1861
- Dell, Richard, Rev., c.1804-1858
- Dell, Richard, Revd, c.1804-1858
- De Lond, William Turner, fl. c.1820-1837
- de Lonndra, Mícheál 1878-1969
- DeLorean, John, 1925-2005
- De Loughrey, Peter, 1882-1931
- de Loutherbourg, Philippe-Jacques, 1740-1812
- del Águila, Juan, 1545-1602
- de László (de Lombos). Lucy Madeleine (née Guinness), 1870-1950
- de László, Philip (Alexius de Lombos) 1869-1937
- de László, Philip Alexius 1869-1937
- de Marolles, Louis, d.1692
- De Massue, Henri, Marquis de Ruvigny, Earl of Galway, 1648-1720
- De Massue, Henri, marquis de Ruvigny and earl of Galway, 1648-1720
- de Mellett de Bonas, Alice, b.1916
- de Mellett de Bonas, George
- de Moenis, Giliana
- de Montalembert, Charles, 1810-1870
- De Montbret, Charles Etienne Coquebert, 1755-1831
- de Montfort, Simon V,c.1208-1265
- De Montfort family
- De Montmorency, Hervey
- de Montmorency, Lodge Raymond, 2nd Viscount Frankfort de Montmorency, 1806-1889
- de Montmorency, William B., 5th Viscount Mountmorres, d.1880
- De Morgan, Augustus, 1806 - 1871
Walsh, John, 1786-1847
- De Morgan, Augustus, 1806-1871
- De Morgan, John, fl. 1871-79
- de Morsier, Jean Francois, 1668-1747
- Dempsey, Eric, 1961-
- Dempsey, Frank, c.1884-1931
- Dempsey, Jim, d. 1986
- Dempsey, John, 1776-1845
- Dempsey, John, C.C., c.1811-1855
- Dempsey, John, d.1835
- Dempsey, John, Fr, fl.1655-1693
- Dempsey, Michael, fl.1916
- Dempsey, Timothy
- Dempsey family
- Denara, Melita, b. 1950
- Denham, James, 1802-1871
- Deniehy, Dan
- Denman, Thomas, 1st Baron Denman, 1779-1854
- Denmead, Henry, fl. 1810-1843
- Denn, Pádraig, 1780-c.1828
- Dennehy, Dan, 1859-1924
- Dennehy, Dennis, 1938-1984
- Dennehy family
- Dennin, Maurice Griffin, 1805-1863
- Denning, Alfred, Lord, 1899-1999
- Dennis, Elizabeth, fl.1857-1863
- Dennis, John, 1800-1869
- Dennis, Maurice Griffith, 1805-1863
- Dennis, William, c.1726-1770
- Dennis family of Fortgranite, Baltinglass
- Denny, Arabella, Lady, 1707-1792
- Denny, Lady Arabella, 1707–1792
- Denny, Thomas (Tom), b. 1956
- Denny family
- De Noraidh, Liam, 1888-1972
- Denton, Thomas, 1637-1698
- Denver, Wiliam E., 1923
- Denvir, Cornelius, bishop, 1791-1865
- Denvir, John, 1843-1916
- Deny family
- de Nógla, Éadbhard, c.1710-c.1792
- De Oviedo, Mateo, O.F.M., d. 1610
- De Oviedo, Mateo, OFM, d. 1610
- De Paor, Liam, 1926-1998
- De Paor, Máire, 1925-1994
- De Paor, Pádraig, 1862-1951
- de Paor, Éamonn, 1929-2007
- de Paul, Vincent, 1581-1660
- De Pienne, Peter, fl. 1647
- De Pitchford family
- De Plantier, Sophie, d. 1996
- De Prendergast, Maurice, d. 1205
- De Prins, Francis, 1824- 84
- de Purcell, Walter, fl. 1205
- de Putron, Mary Eily, 1914-1982
- de Quexo, Pedro
- De Quincey, Thomas, 1785-1859
- Derbforgaill, d.1193
- de Recalde, Juan Martínez, KOS, c.1540-1588)
- de Renzy, Mathew, fl.1627-1735
- de Renzy, Matthew, Sir, 1577-1634
- Derham, Joseph, 1886-1966
- Derham, Matthias, 1883-1959
- De Ridelsford family
- Dering, Sir Edward, 2nd baronet, 1625–1684
- Dermody, Thomas, 1775-1802
- Dermody, Tony, 1945-2004
- de Roovere, Anthonis, c.1430-1482
- De Ros, William Lennox Lasalles Fitzgerald, 23rd Baron de Ros, 1797-1874
- de Ros family
- De Rossa, Proinsias, fl. 1990-2000
- de Rous, Hugh, bishop of Ossory, d.1218
- Derrick, Samuel
- Derricke, John
- Derricke, John, fl. 1578
- Derricke, John, fl.1578
- Derricke, John, fl.1578 ; Day, John, fl. 1563-1583
- de Rupeforti, William, fl. 1332-1334
- de Róiste, Liam 1882-1959
- de Róiste, Pilib (Roche, Philip),1760-1798
- de Róiste, Proinsias, 1866-1961
- de Róiste, Séamus 1659-1723
- de Salis, Henry Jerome, 1740-1810
- de Sandeford, Fulk Bassett, d. 1271
- de Sartronville, Jeanne, fl. 1385
- de Sauqueville, Jordan, ? - c. 1233
- Desmond, Barry, 1935-
- Desmond, Barry, fl. 1960-2000
- Desmond, Barry, fl. 1960-2020
- Desmond, earls of
- Desmond, William, 1951-
- Despard, Charlotte, 1844-1939
- Despard, Charlotte, 1844-1939 ; MacBride, Maud Gonne, 1866-1953
- Despard, Edward Marcus, 1751-1803
- De Thoyras, Rapin, fl. 1690
- de Tocqueville, Alexis, 1805-1859
- de Tocqueville, Alexis 1805-1859
- Detring, Gustav, 1842-1913
- De Valera, Eamon, 1882-1975
- De Valera, Eamon, 1882-1975 : Churchill, Winston Leonard Spencer, 1874-1965
- de Valera, Eamon, 1882–1975
- DeValera, Eamon 1882-1975
- De Valera, Ruaidhrí (1916–1978)
- De Valera, Ruaidhrí, 1916–1978
- De Valera, Sinéad, 1878-1975
- De Valera, Terry, 1922-2007
- De Valera, Éamon (Dev), 1882-1975
- De Valera, Éamon, 1882-1975
- de Valera, Éamon, 1882-1975
- DeValera, Éamon, 1882-1975
- De Valera, Éamon, 1882-1975 : Roosevelt, Theodore D.
- De Valera, Éamon, 1882-1975 ; Griffith, Arthur, 1871-1922 ; Lloyd George, David, 1st Earl Lloyd-George of Dwyfor, 1863-1945
- De Valera, Éamon, 1882-1975,
- De Valera, Éamon, 1882–1975
- de Valle, Gilbert, , fl. 1207
- de Valle, Stephen
- De Valles family
- De Valois, Dame Ninette, 1898-2001
- De Valéra, Eamon, 1882-1975
- de Valéra, Eamon, 1882-1975
- De Valéra, Éamon, 1882-1975
- Devane, Andy, 1917-2000
- Devane, Richard, SJ, 1876-1951
- Devane, Richard S., SJ, 1876-1951
- Devany, Conor, bishop, c.1533-1612, O'Devany, Cornelius, bishop, c.1533-1612
- Devenet, Jean-Baptiste
- Devenish, Digby, d.1841
- Devenish, Sylvester, fl. 1800-1900
- Devenish d'Athlone, John James, ist Marquis, c.1669-1739
- De Verdun family
- De Vere (Hunt), Sir Aubrey, 1788–1846
- De Vere, Aubrey, 1814-1902
- De Vere, Sir Stephen Edward, 4th Baronet, 1812-1904
- De Vere, Stephen, 1812-1904
- De Vere, Stephen, fl. 1847
- De Vere family
- Deverell, Averil, 1893-1979
- Devereux, Catherine, fl. 1800
- Devereux, John, 1778-1854
- Devereux, John, d. 1860
- Devereux, Richard J., fl. 1868
- Devereux, Robert, 2nd earl of Essex, 1566-1601
- Devereux, Robert, 3rd earl of Essex, 1591-1646
- Devereux, Walter, 1st earl of Essex, 1539-1576
- Devereux, Walter, 1539-1576) 1st earl of Essex
- Devereux, Walter, d. 1798
- Devereux family
- De Vesci family
- De Vescy family
- Devine, Emma, c.1977-2012
- Devine, John, fl. 1968-1969
- Devine, Pius, fl.1865-1875
- Devine, Thomas, 1840-1922
- Devine, Thomas Martin
- Devine, Willie, fl. 1912
- Devine family
- Devitt, Myles, d.1761
- Devitt, Patrick, d. 1761
- Devlin, Anne, 1778-1851
- Devlin, Anne, 1781-1851
- Devlin, Anne, 1781–1851
- Devlin, Anne, b. 1951
- Devlin, Arthur, d. 1820
- Devlin, Bernadette, 1947-
- Devlin, David, 1892-1961
- Devlin, Denis, 1908-1954
- Devlin, Denis, 1908-1959
- Devlin, Denis, d. 1959
- Devlin, Dermot, 1942-2017
- Devlin, Greg
- Devlin, Joe (Joseph ), 1871-1934
- Devlin, Joe, 1871-1934
- Devlin, Joe, 1871–1934
- Devlin, John, b.1950
- Devlin, Joseph
- Devlin, Joseph (Wee Joe), 1871-1934
- Devlin, Joseph, 1871-1934
- Devlin, Joseph, 1871-1934 ; Redmond, John Edward, 1856-1918
- Devlin, Joseph , 1871–1934
- Devlin, Joseph, 1871–1934
- Devlin, Kate, 1905-1906
- Devlin, Liam, 1877-1964
- Devlin, Liam, 1895-1964
- Devlin, P.J., 1909-1986
- Devlin, Paddy, 1925-1999
- Devlin, Patrick (Paddy), 1925-1999
- Devlin, Patrick, 1925-1999
- Devlin family
- Devonsher family
- Devorgilla, d. 1193
- Devoy, John, 1842-1928
- Devoy, John, 1842-1928 ; O'Kelly, James Joseph, 1842-1916 ; Parnell, Charles Stewart, 1846-1891
- Devoy family
- Devyr (De Vere), Thomas Ainge, 1805-1887
- de Wall, Alfred, 1795/96-1836
- de Wall, Richard, 1739-1822
- de Wheltoun, William, fl. 1332
- de Wichfeld, Monica (née Massy Bereford),1894-1945
- de Witt, Ellen O'Byrne, c.1875-1926
- Dexter family
- Deyell, John
- De Valéra Éamon 1882 1975
- Diamond, Bill, fl. 1930-1950
- Diamond, Charles
- Diamond family
- Dianchride the scribe, fl. 11th century
- Diarmaid
- Diarmait, abbot of Iona, fl. 814-831
- Diarmait, grandson of Áed Rón, d. 825
- Diarmait, late 6th cent.
- Diarmait, son of Cerball and king of Tara, d. 565
- Diarmuid and Gráinne
- Diceto, Ralph de, d. 1202?
- Dicey, Albert Venn, 1835-1922
- Dicey, Albert Venn, 1835-1922 ; Gladstone, William Ewart, 1809-1898
- Dicey, Edward James Stephen, 1832-1911
- Dick, Samuel, d.1802
- Dickens, Charles, 1812-1870
- Dickens, Charles John Huffam, 1812-1870
- Dickinson, Emily (née Parnell), fl. 1844-1902
- Dickinson, Emily Elizabeth, 1830-1886
- Dickson, Annan, 1893-1979
- Dickson, Anne, 1928-
- Dickson, David
- Dickson, Emily Winifred, 1866 - 1944
- Dickson, Mary Frances, 1809-1885
- Dickson, Thomas
- Dickson, Thomas, 1885-1916
- Dickson, William Steel, 1744-1824
- Dickson, William Steel, 1744-1824,
- Dickson family
- Dicuil (Dícuil(l)), c.760-post-825
- Dietrichsen, Frederick, 1882-1916
- Dietrichsen, Frederick, d.1916
- Difficy, John Jack, d. c.1996
- Digby, George, 2nd earl of Bristol, 1612-1677
- Digby, Lettice, Baroness Offaly, c.1580-1658
- Digby, Lettice, c.1580-1658
- Digby, Mabel (Mother Mabel Digby), 1835-1911
- Digby, Simon (c.1645–1720), miniature-painter and bishop of Elphin
- Digby, Sir Kenelm, 1603–1665
- Digby family
- Digginan, Dominick
- Digman family
- Dignan, John, Bishop of Clonfert, 1880-1953
- Dignan, John, d. 1953
- Digues La Touche des Rompieres, David, 1671-1745
- Dilke, Charles Wentworth, Sir, 1843-1911
- Dill, James Reid, c.1814-1896
- Dillane, Denis, c.1807-1863
- Dill family
- Dillon, Arthur
- Dillon, Charles, fl.1820-1842
- Dillon, Dominic, O.P., d. 1649
- Dillon, Edward, archbishop of Tuam, d. 1809
- Dillon, Edward, bishop of Tuam, d. 1809
- Dillon, Eilís, 1920-1994
- Dillon, Elizabeth, 1865-1907
- Dillon, Emile Joseph, 1855-1933
- Dillon, family
- Dillon, Geraldine Plunkett, 1891-1986
- Dillon, Gerard, 1916-1971
- Dillon, Gerard, 1916-1971,
- Dillon, Gerard, d. 1760
- Dillon, Gerard, d. 1971
- Dillon, James, 1902-1986
- Dillon, James M., Chaplain, fl. 1862
- Dillon, John, 1851-1927
- Dillon, John, 1851-1927 ; Parnell, Charles Stewart, 1846-1891
- Dillon, John, 1851–1927
- Dillon, John, fl. 1839
- Dillon, John 1851-1927
- Dillon, John Blake, 1816-1866
- Dillon, John Fox, 1843-1925
- Dillon, Luke, 1848-1929
- Dillon, Luke Gerald, 4th Baron Clonbrock, 1834-1917
- Dillon, Michael, b. 1957
- Dillon, Mick
- Dillon, Myles, 1900-1972
- Dillon, Myles Patrick, 1900-72
- Dillon, P.J., fl. 1869
- Dillon, Patrick, fl.1859-1862
- Dillon, Robert, 3rd Baron Clonbrock, 1807-1893
- Dillon, Robert, 3rd baron Clonbrock, 1807-1893
- Dillon, Robert, 3rd Baron Clonbrock, 1807-1893 ; Quitman, John A, 1799-1858
- Dillon, Robert, 1754-1831
- Dillon, Robert, fl. 1541
- Dillon, Theobald, Sir, (d.1624?)
- Dillon, Theobold Wolfe Tone, 1898-1946
- Dillon, William, fl.1850-1888
- Dillon-Browne family
- Dillon-Croker, John, fl.1801-1827
- Dillon family
- Dillon family (of Kilkenny)
- Dillon family (of Kilkenny West)
- Dillwyn, Lewis Weston, 1778-1855
- Dilworth, Mark, 1924-2004
- Din (Denn), Pádraig, 1756-1828
- Din, Gilbert C.
- Dineen, M. Helen, 1876-1925
- Dineen, Michael, 1898-1921
- Dingley, Thomas, d. 1695
- Dingley, Thomas, d. 1695?
- Dinneen, Dennis, 1927-1985
- Dinneen, Patrick S., 1860-1934
- Dinneen, Patrick Stephen (Ó Duinnín, Pádraig Stiabhna ), 1860-1934
- Dinneen, Patrick Stephen (Ó Duinnín, Pádraig Stiabhna), 1860-1934
- Dinneen, Patrick Stephen (Ó Duinnín, Pádraig Stiabhna), 1860–1934
- Dinneen, Patrick Stephen, 1860-1934
- Dinning family
- Dinsmoor, Robert, 1757-1836
- Dionysius Exiguus, (fl. 6th century A.D.)
- Diormit
- Dirrane, Bridget, 1894-
- Disney, Walter Elias "Walt", 1901-1966
- Disney family
- Disraeli, Benjamin, d. 1814
- Disraeli, Benjamin, earl of Beaconsfield, 1804-1881
- Disraeli, Benjamin, Earl of Beaconsfield, 1804-1881
- Disraeli, Benjamin, Earl of Beaconsfield, 1804-1881 ; Gladstone, William Ewart, 1809-1898
- Dissette, Edward, 1768-1827
- Dittmer, Arthur H., 1922-1944
- Divane, John, 1823-1888
- Diver, John
- Diver family
- Dix, Ernest Reginald McClintock, 1857-1936
- Dixon, Beatrice, d. 2005
- Dixon, Daniel, 1st baronet, 1844–1907
- Dixon, Fred E., d. 1988
- Dixon, Gertie, c.1921-2018
- Dixon, Henry Horatio, 1869-1953
- Dixon, James, 1844-1923
- Dixon, James, d. 1840
- Dixon, John, 1806-1866
- Dixon, Joseph, bishop, 1806-1866
- Dixon, Margaret, d.2014
- Dixon, Richard, Bishop of Cork
- Dixon, Samuel
- Dixon, Samuel, d.1769
- Dixon family
- Doak, Frederick William, d.1914
- Doane, Warren Homer, 1845-1916
- Dobbin, Thomas, b.1754
- Dobbs, Arthur, 1689-1765
- Dobbs, Arthur, 1689–1765
- Dobbs, Francis, 1750-1811
- Dobbs, M. E. (Margaret E.), 1871-1962
- Dobbs, Margaret E., fl. 1917-1953
- Dobbs, Richard, 1634-1701
- Dobbyn family
- Dobeln, Georg Carl von, 1758-1820
- Dobeneck, Magdalene von
- Dobrzynski, Waclaw Tadeusz, 1883-1962
- Dobrzynski, Waclaw Tadeusz, c.1885-1962
- Dobson, John, 1942-2017
- Docwra, Henry (1564-1631)
- Docwra, Henry, 1st Baron Docwra of Culmore, bap. 1564, d. 1631
- Docwra, Sir Henry (1564-1631)
- Dodd, A. H. (Arthur Herbert), 1891-1975
- Dodd, Carl, d.2018
- Dodd, P.J. (Patrick Joseph), 1845-1892
- Dodd, William, fl. 1798
- Dodd, William Houston, d. 1930
- Dodd family
- Doddington, John, Sir, fl. 1608
- Doddridge, Philip, 1702-1751
- Dodgshon, Robert A.
- Dodson, William, 1639-1671
- Dodwell, Edward, 1767/1776-1832
- Dodwell, Edward, 1776-1832
- Dodwell family
- Doegen, Wilhelm
- Doegen, Wilhelm Albert, 1877-1967
- Doggett-Seery, May, 1932-
- Dogherty, Dan, d.1825
- Doheny, Francis Walter, 1879-1962
- Doheny, Michael, 1805-1862
- Doherty, Bailiff, d. 1847
- Doherty, Denis,
- Doherty, Edmund Brian, 1918-1940
- Doherty, James, 1896-1931
- Doherty, Joe, 1955-
- Doherty, John
- Doherty, John, 1798-1854
- Doherty, John, 1798–1854
- Doherty, John, 1895-1980
- Doherty, John, 1900-1980
- Doherty, John, b. 1826 ; de Barra, Dáibhí ; Doherty, Paul
- Doherty, John, b. 1898
- Doherty, John, b. 1949
- Doherty, Kevin, 1977-2012
- Doherty, Margaret (Maggie), 1896-1928
- Doherty, Margaret, 1896-1928
- Doherty, Margaret, fl.1916-1940
- Doherty, Mary, 1830-1844
- Doherty, Patsy, 1939-1972
- Doherty, Peter, d.1881
- Doherty, Tony, 1963 -
- Doherty, Tony, 1963-
- Doherty, William J., 1834-1898
- Doherty family
- Dolan, Bridget, d. 1827
- Dolan, Colette, c.1945-2005
- Dolan, Jimmy, fl. 1870-1880
- Dolan, Joe, 1939-2007
- Dolan, Joseph, 1872-1930
- Dolan, Mona Germaine, 1918-2012
- Dolan, Pat
- Dolan, Patrick James, 1904-1932
- Dolling, Robert William Radclyffe, 1851-1902
- Dombrain, James, Sir, d. 1871
- Dominic, saint [Santo Domingo de Guzmán], 1170-1221,
- Domnall mac Áedo, d. 642
- Domvile (Domville), William, 1609-1689
- Domvile, Barry, Sir, 1878-1971
- Domvile, Charles, Sir, 1822-1884
- Domville family
- Donagh, Rita, b. 1939
- Donaghy, James (Jimmy) J., 1893-1970
- Donaghy, John, 1919-2011
- Donaghy, John Lyle, 1902-1949
- Donaghy, Thomas, Dean
- Donahoe, Jack, 1806-1830
- Donahoe, Patrick (1810-1900)
- Donahoe, Patrick, 1810-1901
- Donaldson, Bán, c. 1710
- Donaldson, Jeffrey, 1962-
- Donaldson, Tommy, c.1920-2000
- Donaldson family
- Donally, Mary, fl.1738-1739
- Donal MacCarthy Reagh (Domhnall Mac Carthaigh Riabhach), 1450/1460-1531
- Donard (Domhanghart), saint, d.506
- Donatus, Aelius, fl. 350
- Donatus, bishop of Fiesole, 829-876
- Donatus, Tiberius Claudius, fl. 400
- Doncanus Hibernus
- Donegan, (née Tyrrell), Mary, c.1811-1880
- Donegan, Patrick, 1895-1955
- Donegan family
- Donelan, James, 1823-1900
- Donell,John, fl. 1542
- Donellan, Michael, fl. 1939-1957
- Dongan (Donjon, Dungan) family
- Dongan, John, d. 1592
- Dongan, Thomas, 2nd earl of Limerick, 1634-1715
- Dongan, Thomas, 1634-1715
- Donleavy, James Patrick, 1926-
- Donlevy, Andrew, 1680?-1746
- Donlon, Seán
- Donlon family
- Donnahoe, Patrick, 1811-1901
- Donnchad, son of Brian Bóruma, d. 1064
- Donnchad, son of Brian Bóruma, d. 1064
- Donnchadh, king, d.974
- Donnchadh, son of Brian Bóraimhe
- Donne, John, 1572?-1631
- Donnell, Eileen Hickson
- Donnellan, Anne, d. 1762
- Donnellan, John, 1917-1992
- Donnellan, Maurice, bishop, d.1706
- Donnellan, Nehemiah, 1649-1705
- Donnellan, Philip, 1924-1999
- Donnellan, Philip, d. 1999
- Donnellan family
- Donnelly, Arthur, 1813-1886
- Donnelly, Bernard, 1800-1880
- Donnelly, Charles Patrick, 1914-1937
- Donnelly, Dan, 1786-1820
- Donnelly, Dan, 1788-1820
- Donnelly, Dan, 1788–1820
- Donnelly, Daniel, 1786-1820
- Donnelly, Elizabeth, 1822-1886
- Donnelly, Frances, b.1908
- Donnelly, Helen Ruth ('Nellie') Gifford, 1880-1971
- Donnelly, Helen Ruth Gifford, 1880-1971
- Donnelly, James, 1823-1893
- Donnelly, James, of Gneevegulla, runner
- Donnelly, James P., fl. 1857
- Donnelly, James S.
- Donnelly, James S., Jr.
- Donnelly, John, fl. 1890-1914
- Donnelly, Micky, b.1952
- Donnelly, Ross, Sir, 1763-?1840
- Donnelly, Thomas, 1772-1847
- Donnelly, Thomas Philip, 1920-2013
- Donnelly, William, d. 1880
- Donnelly family
- Donnelly family (of Canada)
- Donnely family
- Donnogh, Conor, Fr, fl. 1641
- Donnolly (Donnelly), William (Fr Francis), OFM, 1863-1929
- Donnán
- Donogh, O'Malley, 1921-1968
- Donoghoe, Terence, fl. 1800
- Donoghue, David
- Donoghue, Denis, 1928-
- Donoghue, Emma, 1969-
- Donohoe, Kathleen, d.2001
- Donohue, Michael, 1799-1854
- Donovan, Dan, 1926-
- Donovan, Daniel, 1807-1877
- Donovan, Daniel, 1808-1877
- Donovan, Daniel, Dr, 1808-1877
- Donovan, Frederick, fl. 1894-1896
- Donovan, James, c.1839-1907
- Donovan, Jim
- Donovan, John, d. 1894
- Donovan, John H., fl. 1862
- Donovan, John J., 1887-1956
- Donovan, Mary
- Donovan, Mary, 1831-1860
- Donovan, Robert, 1862-1934
- Donovan family
- Doolaghty, John, d. 1882
- Doolan, Bid, fl. 1798
- Doolan, Dermot
- Doolan, Joe, c.1883-post-1966
- Doolan family
- Dooley, Ann
- Dooley, Betty, neé Kettle, d. 1996
- Dooley, John (1842-1873)
- Dooley, Mikey, 1885-1952
- Dooley famly
- Doorley, Joseph Ignatius, 1878-1963
- Doorley family
- Dopping, Anthony, 1643–1697
- Dopping, Anthony, d. 1743
- Dopping-Heppenstal, Haidee, 1861-1947
- Doran, Amanda
- Doran, Charles Guilfoyle (1835-1909)
- Doran, Charles Guilfoyle, 1835 1909
- Doran, Charles Guilfoyle, 1835-1909
- Doran, Colleen
- Doran, Hugh, 1926-2004
- Doran, Hugh, d. 2004
- Doran, John, d. 1859
- Doran, Johnny
- Doran, Johnny, 1908-1950
- Doran, Lucy Mary, née Dunlap, 1871-1900
- Doran, Pat, 1941-
- Doran, Patrick, c.1828-post 1867
- Doran family
- Dore, Maura, d.2017
- Dorian, Hugh, 1834-1914
- Dorman-Smith, Eric, 1895-1969
- Dorney, James, 1856-post-1876
- Dorr, Noel
- Dorr, Noel, b. 1933
- Dorrian, Patrick, bishop, 1814-1885
- Dorrian, Patrick, bishop, fl. 1885
- Dostoevsky, Fyodor, 1821-1881
- Doudney, David Alfred, 1811-1893
- Dougherty, George, 1845-1924
- Dougherty, Margaret, fl.1835-1915
- Dougherty family
- Doughty-Tichborne, Roger Charles, 1829-1854?
- Douglas, Alfred Bruce, Lord, 1870-1945
- Douglas, Constance Mona, 1898-1987
- Douglas, Frederick, 1818-1895
- Douglas, Harry, Lieutenant, fl. 1914-1954
- Douglas, James, 1887-1954
- Douglas, James G., 1887-1954
- Douglas, John Sholto, 8th marquess of Queensberry, 1844-1900
- Douglass, Frederick, 1815-1895
- Douglass, Frederick, 1818-1895
- Douglass, Frederick, 1818-1895,
- Douglass, Frederick 1818-1895
- Douglass, William, 1831-1923
- Doulagh, saint, c.7th century
- Dow, Lorenzo, 1777-1834
- Dowdall, Elizabeth, Lady, d. 1658
- Dowdall, George, bishop, 1487-1558
- Dowdall, James, d. 1599
- Dowdall, James, d.1599
- Dowdall, John, d.1402
- Dowdall family
- Dowden, Edward, 1843-1913
- Dowden, Richard, 1794-1861
- Dowglass, Thomas, 1806-1857
- Dowis, Charles, Fr., 1827-1892
- Dowling, Bartholomew
- Dowling, Catherine
- Dowling, Dick, 1837-1867
- Dowling, Jeremiah, 1780-1844
- Dowling, Jeremiah, 1830-1906
- Dowling, Joe, 1886-1932
- Dowling, Joe, b.1948-
- Dowling, Joseph, fl. 1918
- Dowling, Mary, 1892-1950
- Dowling, Michael J.
- Dowling, Paddy, 1904-
- Dowling, Paddy, 1904-1999
- Dowling, Richard William (Dick), 1837-1867
- Dowling, Seán, 1885-1948
- Dowling, Siobhán, d.2012
- Dowling, William Paul, d. 1877
- Dowling family
- Dowman family
- Downes, Dive, bishop of Cork, d. 1709
- Downes, Dive, Bishop of Cork and Ross, 1653-1709
- Downes, Jack, 1914-2014
- Downes, Nicholas, 1854-1915
- Downes, Thomas, 1840-1911
- Downes, William Anthony, 1905-
- Downes family
- Downey, Elizabeth (Bessie), 1895-1967
- Downey, James, 1933-
- Downey, James, bishop, 1874-1927
- Downey, John, c.1855-1880
- Downey, Patrick, fl.?1911-?1940
- Downey, Richard, 1859-1898
- Downey, Thomas, 1891-1937
- Downey, Tom, 1951-2019
- Downey family
- Downie, William Thomas, 1831-1904
- Downing, Arthur Matthew Weld, 1850-1917
- Downing, Ellen Mary Patrick, 1828-1869
- Downing, Emanuel
- Downing, Emanuel,
- Downing, Eugene, 1913-2003
- Downing, R., fl. 1684
- Downing, Samuel, 1811-1882
- Downshire, Arthur Hill, Marquess of, 1753-1801
- Downshire, Marquess of
- Dowse, John Robert, 1813-1892
- Dowsley, William George, 1871-1947
- Doyle, Aidan
- Doyle, Arthur Conan, 1859-1930
- Doyle, Arthur Conan, Sir, 1859-1930
- Doyle, Bernard
- Doyle, Bill, 1925-2010
- Doyle, Bill, 1926-2010
- Doyle, Bob, 1916-
- Doyle, Bob, 1916-2009
- Doyle, Charles F., d. 1928
- Doyle, Colman, b. 1932
- Doyle, Daniel, 1826-1873
- Doyle, Daniel, fl.1910-1972
- Doyle, Eamonn, b.1969
- Doyle, family
- Doyle, Frank, d.2009
- Doyle, Henry, 1827-1893
- Doyle, Jack, 1913-1978
- Doyle, James (Lamb), 1837-1921
- Doyle, James, 1786-1834
- Doyle, James, fl. 1900
- Doyle, James V. (JIm), c.1930-2010
- Doyle, James Warren, 1786-1834
- Doyle, James Warren, O.S.A., d. 1834
- Doyle, Joe, 1938-2016
- Doyle, John
- Doyle, John (HB), 1797-1868
- Doyle, John, 1797–1868
- Doyle, John, 1957-
- Doyle, John,C.S.S.R., alias Joseph McArdle, 1876-1965
- Doyle, John, fl. 1958
- Doyle, John M., d.1969
- Doyle, Larry
- Doyle, Lewis, fl. 1880
- Doyle, M. Aloysius, 1820-1908
- Doyle, Martin, 1781-1861
- Doyle, Martin, 1894-1940
- Doyle, Martin, d. 1940
- Doyle, Mary (née Casey) 1907-2007
- Doyle, Matthew, -1934
- Doyle, Matthew, 1758-1841
- Doyle, Michael, fl. 1776-1843
- Doyle, Michael Francis, 1893-1945
- Doyle, Patrick, 190?-1964
- Doyle, Patrick, 1849-1911
- Doyle, Patrick, dd.1921
- Doyle, Peter, 1844-
- Doyle, Roddy (Roderick Timothy)
- Doyle, Roddy, 1958-
- Doyle, Sr Aloysius c.1807-1901
- Doyle, Tom, 1817-1903
- Doyle, Vincent
- Doyle, William, 1826-1914
- Doyle, William Joseph Gabriel, 1873-1917
- Doyle, Willie, SJ
- Doyle, W S (Willie), fl.1927-1955
- Drake, Peter, 1671-1753
- Drane, Thomas, 1818-1890
- Draper, Richard. 1912-2016
- Drapes, Thomas, 1847-1919
- Drapier, M. B. [i.e. Jonathan Swift]
- Draycott, Alice, d. 1576
- Draycott family
- Drea, Martin, Monsignor, 1888-1965
- Drea, Sean, fl. 1976
- Dreaper, Tom, 1898-1975
- Drelincourt, Antoine, 1641-
- Drelincourt, Charles, 1595-1669
- Drelincourt, Laurent, 1625-1679
- Drelincourt, Peter, d. 1722
- Drelincourt, Pierre
- Drelincourt, Pierre, 1644-1722
- Drelincourt, Pierre, d. 1722
- Drennan, Thomas Hamilton, 1801-1812
- Drennan, William, 1754-1820
- Drennan, William, 1754-1820 ; Stewart, Anthony Terence Quincey, 1929-
- Drew, Francis, 1824-1879
- Drew, James B., d. 1953
- Drew, Ronnie, 1934-2008
- Drew, Thomas, 1800–1870
- Drew, Thomas, 1838-1910
- Drew family
- Dreyfus, Alfred, 1859-1935
- Driscol, Denis, d.1749
- Driscoll, Billy, c.1830-1911
- Driscoll, Charles, fl. 1943
- Driver, John C., 1936-1969
- Droz family
- Druce, George, 1850-1922
- Druitt, Joseph, d.1876
- Drumgoole, John Christopher, 1824-
- Drumm, James, d. 1974
- Drumm, Peter J(ohn), 1898-1952
- Drummond, James, 1786?-1863
- Drummond, James, 1786?–1863
- Drummond, James Lawson, 1783 – 1853
- Drummond, James Lawson, 1783-1853
- Drummond, James Lawson, 1783–1853
- Drummond, James Lawson, c.1783-1853
- Drummond, Robert, d.1778
- Drummond, Thomas, 1797-1840
- Drummond, Thomas, c.1790-1835
- Drummond, Thomas, c.1793-1835
- Drummond, William, of Hawthornden, 1585-1649
- Drummond, William Hamilton, 1778–1865
- Drummond, William Henry, 1854-1907
- Drummond family (of Forfar)
- Drury, Maurice O'Connor (Con), 1907-1976
- Drury, Maurice O'Connor, 1907-1976
- Drury, Susanna
- Drury family
- Dry, Richard, c.1771-1843
- Dryden, Erasmus Henry, Sir, 1669-1710
- Dryden, John, 1631-1700
- Dryer, A. T., fl. 1915-1916
- Duane, Matthew, 1707-1785
- Duane, William
- Duane, William, 1760-1835
- Dub-dá-leithe, abbot of Armagh, d.1064
- Dubedat, Frank, fl. 1890
- Dubedat family
- Dubois, John, Bishop, fl. 1825-1842
- Du Bois, William Edward Burghardt, 1868-1963
- Dubthach (mac Máel Tuile), ?- 869
- Dubthaig, Cadla Ua, bishop, d. 1201
- Du Bédat, Francis Edward, 1851-1919
- Du Bédat, Francis Edward, 1851–1919
- Du Bédat family
- Ducart, Davis, d. c.1886
- Ducart, Davis, fl. c.1760-1785
- Du Caumont, Antonin Nompar, duc de Lauzun, 1633-1723
- Ducey, Edward
- Ducey, Enda, 1907-
- Duchschere, Kevin A.
- Duckett, Eleanor Shipley, 1880-1976
- Duckett family
- Ducrest de Saint-Aubin, Stéphanie Félicité, comtesse de Genlis and marquise de Sillery, 1746-1830
- Dudgeon, Isabella Felicia Maria (néeSymington), 1893-1975
- Dudgeon, Jeff(rey) Edward Anthony
- Dudgeon, Joseph Hume, 1893-1965
- Dudley, Lady Rachel, 1876-1920
- Dudley, Thomas, alias 'Bang Bang', 1911-1981
- Dudley Edwards, Owen, 1938
- Dudley Edwards, Robert, 1909–1988 ; Moody, Theo, 1907–1984 ; Quinn, David Beers, 1909–2002
- Duff, Charles (Ó Dubh, Cathal), 1894-1966
- Duff, Charles, 1894-1966
- Duff, David, 1883-1959
- Duff, Frank, 1889-1980
- Duff, Julia Harrington, 1850-1932
- Duff, Thomas, c.1792–1848
- Duff, Thomas c.1792–1848
- Dufferin family
- Duff family
- Dufficy, Jerome, 1946-2012
- Duffin, Emma
- Duffy, Charles E.
- Duffy, Charles Gavan, 1816-1903
- Duffy, Charles Gavan, 1816-1903 ; Moore, Thomas, 1779-1852; Lever, Charles James, 1816-1872
- Duffy, Charles Gavan, Sir, 1816-1903
- Duffy, Christopher, 1936-2022
- Duffy, Eamon, 1947-
- Duffy, Eamon, fl. 2000
- Duffy, Edward, 1840-1868
- Duffy, Evelyn, Daisy, 1886-1981
- Duffy, family
- Duffy, Francis Patrick, 1871-1932
- Duffy, George Gavan, 1882-1951
- Duffy,George Gavan, 1882-1951
- Duffy, James
- Duffy, James (1808/9–1871)
- Duffy, James, 1808/9-1871
- Duffy, James, 1861-1934
- Duffy, James, 1889-1969
- Duffy, James, c.1808-c1870
- Duffy, James Michael, 1861-1934
- Duffy, Jarlath
- Duffy, Joan, 1940-
- Duffy, John, 1852-1909
- Duffy, John, c.1894-1962
- Duffy, John, fl. 1939-1970
- Duffy, John Joseph, 1916-1944
- Duffy, Louise Gavan, 1884-1969
- Duffy, Louise Gavan, c.1913-
- Duffy, Patrice, O. F. M.
- Duffy, Patrice, OFM
- Duffy, Patsy (Ó Dubhthaigh, Pádraig), 1913-1995
- Duffy, Philip, 1783-1871
- Duffy, Rita, b.1959
- Duffy, Thomas Gavan, d.1941
- Duffy, William, d.1951
- Duffy, Willie J., fl.1914-1931
- Duffy family
- Duffé, Estienne, fl.1627-1632
- Dugdale, Bennet, 1756-1826
- Dugdale, Bridget Rose, fl. 1974
- Dugdale, William, Sir, 1605–1686
- Duggan, Con, 1893-1916
- Duggan, Eamonn 1878-1936
- Duggan, Gregory, c. 1800-1870
- Duggan, Jack
- Duggan, James Arthur
- Duggan, Malachy, fl. 1849
- Duggan, Mary Agnes, c.1856-post 1909
- Duggan, Maurice Noel, 1922-1974
- Duggan, Patrick, 1813-1896
- Duggan, Peg
- Duggan, Richard,
- Duggan, Thomas, archdeacon, c.1890-1961
- Duggan, Tom, 1890-1961
- Duggan, William Patrick (Willie), d.2017
- Duggan family
- Duhig, James, 1871-1965
- Duigenan, Patrick, 1737-
- Duignan, Mary Ann, 1871-1929
- Duignan, Michael V., 1907-1988
- Duignan, Seán, fl. 1995
- Duignan, William Henry (1824-1919)
- Duignan, William Henry, fl. 1878-1924
- Duinsech, Saint
- Dukart, Davis, fl.1761-1780/86
- Duke, Henry Edward, 1st baron Merrivale, 1855-1939
- Duke, Henry Edward, 1st Baron Merrivale, 1855–1939
- Duke, William Mark, 1879-1971
- Duke of Ormond ; Charles II ; Sir Daniel O'Neill , Cromwell, Oliver
- Dukes, Fred, d. 1994
- Dukes of Ormonde
- Duleep Singh, maharaja, 1838-1893
- Dullard, Jo Jo
- Dumont de Bostaquet, Isaac, 1632-1709
- Dumézil, George, 1898-1986
- Dun, Patrick, 1642–1713
- Dun, Sir Patrick, 1642-1714
- Dunbar, Charles, d.1778
- Dunbar, John, c.1570-c.1657 ; Dunbar, Richard, abt.1632-1666 ; Grubbe-Stjernfelt, Anna Catherina, 1631-1689 ; Hamilton, Lewis, 1615-1663 ; Montgomery, William, 1633-1707 ; Shore, William, fl. 1667-1670 ; Somerwell (Somerville), James, d.1688
- Dunbar Harrison, Letitia, 1906-1994
- Duncan, Elizabeth
- Duncan, Ellen, fl. 1907
- Duncan, James Foulis, 1812-1895
- Duncan, Leland Lewis, 1862-1923
- Duncan family
- Dundas, Henry, 1st viscount Melville, 1742-1811
- Dundas, Henry, 1st Viscount Melville, 1742–1811
- Dundass, Samuel, fl.1827
- Dungal, fl. 811-827
- Dungan, John, fl. 1781-1786
- Dungan, Michael, Fr, 1799-
- Dungan, Richard, c.1550-c. 1609
- Dungan, Thomas, earl of Limerick, d. 1715
- Dungan, William, c. 1600-1636
- Dungan family
- Dunin-Markievicz, Casimir, count Markievicz, 1874-1932
- Dunk, George Montagu, 2nd earl of Halifax, 1716-1771
- Dunlap, John, 1746/7-1812
- Dunlap, John, 1746/7–1812
- Dunlap, John, 1747-1812
- Dunlap, William
- Dunlea, William, 1911-1998
- Dunleavy, George, c.1845-1917
- Dunleavy, John J., 1932-2014
- Dunlevy, Mairead, 1941-2008
- Dunlevy, Méiní, 1876-1967
- Dunlop, Henry Wallace Doveton, 1844-1930
- Dunlop, Joey, 1952-2000
- Dunlop, John Boyd, d. 1921
- Dunlop, Marion Wallace, 1864-1942
- Dunlop, Robert, 1861-1930
- Dunlop, Robert, 1960-2008
- Dunlop, Samuel, Rev., fl. 1733
- Dunlop, Samuel, Revd, fl. 1733
- Dunlop, William McCartney 'Cocky', 1920-2011
- Dunn, Gregory
- Dunn, Peter Edward, d.1965
- Dunn, Timothy
- Dunne (née Sellin), Sylvia, b. c.1931
- Dunne, Aidan
- Dunne, Ben, 1949-
- Dunne, Bernard, b.1980
- Dunne, Clement, fl. 1798
- Dunne, Clement, fl. 1798-1799
- Dunne, Edward F., fl. 1917
- Dunne, Finlay Peter, d. 1936
- Dunne, Finley Peter, 1867-1936
- Dunne, Gabhann
- Dunne, John
- Dunne, John, c.1899-1991
- Dunne, John J, d. c.1996
- Dunne, Joseph, d.1917
- Dunne, Kathleen, d.1917
- Dunne, Lee, 1934-
- Dunne, Liam, 1968-
- Dunne, Margaret, d.1923
- Dunne, Michael, 1894-1969
- Dunne, Murtagh, Brother Christopher Luke F.S.C., 1890-1959
- Dunne, Patrick, 1818-1900
- Dunne, Pecker, 1931-
- Dunne, Reginald (Reggie), d.1922
- Dunne, Reginald William, 1898-1922
- Dunne, Robert, bishop, 1830-1917
- Dunne, Seán, 1956-1995
- Dunne, Terence Joseph, bap. 1859-1890
- Dunne, Thomas, 1880-1963
- Dunne, Thomas, 1884-1968
- Dunne, Tom, 1939-
- Dunne, Tom, 1939- ; Tone, Theobald Wolfe, 1763-1798
- Dunne, Veronica, 1927-
- Dunne, William, d.1917
- Dunne family
- Dunn family
- Dunnigan family
- Dunning, Gertrude (nee Hayes), c.1855-1926
- Du Noyer, Charles Victor, 1817-1869
- Du Noyer, George Victor, 1817-1869
- Dunphy, Eamon, 1945-
- Dunphy, Patrick, d.1900
- Duns, Joannes Scotus, 1265?-1308
- Duns Scotus, (Johannes), 1265-1308
- Dunstan, bishop and saint, d. 988
- Dunton, John, 1659-1733
- Dunville, Violet, (Née Lambart), 1861-1940
- Dupetit-Thouars, Aristide Aubert, 1760-1798
- Durand, Jack, 1929-2012
- Durcan, Paul, 1944-
- Durdin-Robertson family
- Duris
- Durkan, Frank 1930-2006
- Durkin, William, P.P., 1931-2006
- Durney, James, c.1885-1957
- Durston, Christopher, 1951-2005
- Dvorak, Jan, f.1926-?
- Dwan, Jack, 1921-1995
- Dwyer, Bernie, 1936-2015
- Dwyer, Betty, d.2012
- Dwyer, Bridget (née Brown), fl. 1833-1858
- Dwyer, Christopher, d.1911
- Dwyer, Daniel,fl. 1900
- Dwyer, Edward, d. 1889
- Dwyer, Michael, 1771-1825
- Dwyer, Michael, 1771-1825 ; Holt, Joseph, 1756-1826
- Dwyer, Michael, 1772-1825
- Dwyer, Michael, fl. 1854-1911
- Dwyer, Ted, fl. 1996
- Dwyer, Thomas, fl.1904-1917
- Dwyer, Walter, 1875-
- Dwyer, William James, 1887-1951 ; Dwyer, Declan, 1914-1981
- Dwyer, William James, 1887–1951
- Dwyer faamily
- Dwyer family
- Dyer, John S., d. 2020
- Dyer, Michael, 1767-c.1850
- Dyer, Reginald Edward Harry, 1864-1927
- Dyer, Reginald Edward Harry, 1864–1927
- Dyke, Bessy, 1793-1865
- Dymphna, Saint, d. c.620
- Dympna, fl 7th century
- Dyos, Harold James, 1921-1978
- Dáibhis, Tomás
- Dál Cais
- Déon, Michel, fl. 1970
- Dúngal, fl.820s
- Dúnán (Donatus) d. 1074, first bishop of Dublin
- Dúnán, Bishop of Dublin, fl. 1030
- Dürer, Albrecht, 1471-1528
- Dürer, Albrecht, 1471-1528 ; Derricke, John, fl.1578 ; Foxe, John, 1516-1587 ; Sidney, Henry, Sir, 1529-1586
- D’Arcy, Matt, 1791-1857
- Eadgar, fl.959-975
- Eadie, Jim
- Eadmer, d. 1124?
- Eadmund, fl.939-946
- Eadred, fl.946-955
- Eadwig, fl.955-959
- Eagar, William, 1796-1839
- Eagar family
- Eager, Edward, d.1782
- Eagleton, Terence "Terry", 1943-
- Eakin, William, fl. 1846
- Eakins, Annie, 1878-1951
- Eakins, Thomas Cowperthwait, 1844-1916
- Eames, Robin, 1937-
- Earley, Thomas, 1819-1893
- Earls, Brian, 1947-2013
- Earls of Ormond
- Early, Biddy, c.1798-1873
- Early, Biddy, c.1798-1874
- Early, Helena, d.1977
- Early, John, SJ, 1814-1873
- Eastwood, Barney, 1932-
- Eastwood, family
- Eastwood, James, 1795-1865
- Eastwood, James, fl. 1851
- Eastwood family
- Eaton, Timothy, fl. c.1840-c.1900
- Ebest, Sally Barr
- Ecgberht, Saint, 639-729
- Ecgberht [Egbert] (d. 839), king of the West Saxons
- Ecgfrith, King of Northumbria, c. 645-685
- Ecgfrith, King of Northumbria, c.645-685
- Echard, Laurence, bap. 1672, d. 1730
- Echlin, Elizabeth, Lady, 1702-1782
- Echlin, Robert, d. 1635
- Echlin family
- Ecott, Tim
- Eden, William, 1st baron Auckland, 1744-1814
- Edgar, John, 1798-1866
- Edgar, king of Scots, late 1070s?–1107
- Edge, Edward
- Edge, Elias, 1872-1964
- Edge, The
- Edgeworth, Francis Ysidro, 1845-1926
- Edgeworth, Francis Ysidro, 1845–1926
- Edgeworth, Kenneth, 1880-
- Edgeworth, Kenneth Essex, 1880-1972
- Edgeworth, Maria
- Edgeworth, Maria (1768–1849)
- Edgeworth, Maria, 1768 - 1849
- Edgeworth, Maria, 1768 -1849
- Edgeworth, Maria, 1768 - 1849 : Swift, Jonathan, 1667-1745
- Edgeworth, Maria, 1768-1849
- Edgeworth, Maria, 1768-1849 ; Owenson, Sydney, Lady Morgan, c.1783-1859 ; Smith, Adam, 1723-1790
- Edgeworth, Maria, 1768-1849,
- Edgeworth, Maria, 1768–1849
- Edgeworth, Michael Packenham, 1812-1881
- Edgeworth, Richard, 1701-1770
- Edgeworth, Richard Lovell, 1744 - 1817
- Edgeworth, Richard Lovell, 1744-1817
- Edgeworth, Richard Lovell, 1744-1817,
- Edgeworth, William, 1794-1829
- Edgeworth-Johnstone, Walter, 1863-1937
- Edgeworth de Firmont, Henry Essex, 1745-1807
- Edgeworth family
- Edmund, Saint, 841-869
- Edmundson, Thomas, 1837-1908
- Edmundson, William, 1627-1712
- Edouart, August, 1789-1861
- Edouart, Augustin, 1789-1861
- Edward, prince of Wales, 1330-1376
- Edward Augustus, Prince, duke of Kent and Strathern, 1767-1820
- Edward I, 1239-1307, King of England
- Edward I, king, 1239-1307
- Edward I, King, 1239-1307 ; John, King, 1167-1216 ; Llywelyn ap Gruffudd, Prince of Wales, d. 1282
- Edward I, King, 1239-1307 ; Otway-Ruthven, Annette Jocelyn, 1909-
- Edward II, king, 1284-1327
- Edward II, king, 1284-1327 ; Adam Harvington (c.1270-c.1345)
- Edward III, king, 1312-1377
- Edward III, King, 1312-1377 ; Fitzgerald family, Earls of Desmond ; Lionel, Duke of Clarence, 1338-1368
- Edward II the Confessor, king, 1003x5-1066
- Edward II the Confessor, King, c.1003-1066
- Edward IV, king, 1442-1483
- Edwards, Dan, 1925-
- Edwards, Dudley (Robert (‘Robin’) Walter Dudley), 1909-1988
- Edwards, Frank, d. 1983
- Edwards, Hilton, 1903-1982
- Edwards, John Arwel, 1939-
- Edwards, Jonathan, 1629-1712
- Edwards, O. M. (Owen Morgan), 1858-1920
- Edwards, Richard, 1648
- Edwards, Robert (‘Robin’) Walter Dudley, 1909-1988
- Edwards, Robert W. Dudley, 1909-1988
- Edwards, Tenison, fl. 1864-1874
- Edwards family
- Edward the Elder, king, d. 924
- Edward VI, king, 1537-1553
- Edward VII, king, 1841-1910
- Edward VII, King, 1841-1910
- Edward VIII, 1894-1972
- Eeles, Henry, 1702-1781
- Effiam, Saint
- Egan, Andrew, c.1810-1863
- Egan, Boetius, archbishop of Tuam, 1734-1798
- Egan, Bridget, c.1871-1947
- Egan, Cornelius, bishop, d. 1856
- Egan, Edward, 1858-1940
- Egan, Frederick William, 1836-1901
- Egan, Howard, 1815-1878
- Egan, J. J., 1885-1918
- Egan, John, fl.1797-1847
- Egan, Margaret
- Egan, Michael, 1912-2010
- Egan, Michael Boetius, Kieran, 1895-1956
- Egan, Michael J.S., d.2021
- Egan, Patrick,1841-1919
- Egan, Patrick, fl. 1893
- Egan, Patrick M., 1843-1903
- Egan, Patrick M., d. 1903
- Egan, Patsy
- Egan family
- Egerton, George (Mary Chavelita Dunne), 1859-1945
- Egerton, George (Mary Chavelita Dunne), 1859-1945 ; Lawless, Emily, 1845-1913
- Egg, Augustus Leopold, 1816-63
- Eglinton, John
- Egmont, earls of
- Ehrlich, Cyril, 1925-2004
- Eilhart von Oberg, fl. 1100-1200
- Eithne
- Ekenhead, Thomas, d. 1832
- Elam, Norah (née Doherty), 1878-1961
- Elcock, James, d. 1872
- Elder, Andrew, 1821-1886
- Elder, Lily, 1908-
- Elder, Olivia, 1735-1780
- Eleanor, Lady Godfrey, 1772-1852
- Elgee, Anne Francesca, 1826-1896
- Elgee family
- Eligius, Saint, d. c.660
- Eliot, George, 1819-1880
- Eliot, Thomas Stearns, 1888-1965
- Elisabeth of Austria, 1837-1898
- Elizabeth I, 1533-1603
- Elizabeth I, queen, 1533-1603
- Elizabeth I, queen, 1533-1603,
- Elizabeth II, queen, 1926-
- Elizabeth II, queen, 1926-2022
- Ellard, John, fl. 1798-1800
- Ellard, Mary Rebecca, 1876-1957
- Elliman, Louis, 1903–1965
- Elliman, Maurice (Moshe, Moses), 1872–1952
- Elliot, Charles, 1748?-1790
- Elliot, S., 1934-1971
- Elliot, Shane More, fl. 1432-1443
- Elliot, William, 1766-1818
- Elliott, Alfred George, bishop of the united dioceses of Kilmore, Elphin and Ardagh, 1828-1915
- Elliott, Benjamin Foster, fl.1831-1864
- Elliott, Ernest, fl. 1959-1982
- Elliott, Howard, fl. 1917-1920
- Elliott, Marianne, 1948-
- Ellis, Desmond, 1944-
- Ellis, Edmund, Captain, fl.1606,
- Ellis, Eilish, 1919-2009
- Ellis, Frank, fl.1910-2004
- Ellis, Henry, 1721-1806
- Ellis, James, 1931-2014
- Ellis, James, fl. 1845
- Ellis, Jason, b. 1965
- Ellis, John, 1802-1857
- Ellis, John, fl. 1753
- Ellis, Mary, fl. 1845
- Ellis, Peter Berresford, b.1943
- Ellis, Steven G., 1950-
- Ellis, Walter, 1948-
- Ellis, Willie, d.2006
- Ellison, Colette
- Ellison, William Frederick Archdall, c.1864-1936
- Ellsworth, Henry, fl.1634
- Elmes, Ellett, 1887-1958
- Elmes, John, fl.1804-1861
- Elmes, John, fl. 1804-1861
- Elmes, John, fl.1804-1861,
- Elmes, Mary, 1908-2002
- Elmes family
- Elmhirst, Leonard, 1893-1975
- Elmore, Alfred, 1815-1881
- Elmore, John Richard, c.1785-post-1827
- Elmsley, John, 1801-1863
- Elrington, Charles Richard, 1787-1850
- Elrington family
- Elton, Geoffrey Rudolph, Sir, 1921-1994
- Elvery, Beatrice, Lady Glenavy, 1883-1970
- Elvery family
- Elvery [neé Campbell], Beatrice Moss (1883–1970), Lady Glenavy,
- Elwes, Henry John, 1846–1922
- Elwood family
- Embury, Philip, fl. 1766
- Emer, legendary
- Emerson, James Samuel, 1895-1917
- Emerson, Kathleen, d.1970
- Emerson, Lucius J., 1911-2005
- Emerson Tennent, James, Sir, 1804-1869
- Emily, Countess of Glengall, 1777-1836
- Emmet, James Albert Garland, 1898-1986
- Emmet, Joseph Kline, 1841-1891
- Emmet, Lydia Field, fl. 1880-90
- Emmet, Robert
- Emmet, Robert, 1778 - 1803
- Emmet, Robert, 1778-1803
- Emmet, Thomas Addis (d. 1919)
- Emmet, Thomas Addis, 1764-1827
- Emmet, Thomas Addis, 1764-1827 : Fitzgerald, Edward, Lord, 1763-1798 :
- Emmet family
- Emmet family ; James family ; Emmet, Thomas Addis, 1764-1827 ; James, William, 1771-1832
- Emmick, Nancy J.
- Enda (Eanna), Saint, d.c.530
- Engels, Friedrich, 1820-1895
- Engels, Friedrich, 1820-1895,
- England, John, bishop, 1786-1842
- England, Thomas, 1823-1869
- Englefield family
- English, Ada (Adeline), 1875-1944
- English, Bill, d. 1978
- English, James, d. 1916
- English, James Russell
- English, Joseph, d. c.1996
- English, Norman William, 1922-1978
- Ennis, Lawrence, c.1813-c.1868
- Ennis, Peter,1874-1927
- Ennis, Seamus, 1919-1982
- Ennis, Séamus, 1919-1982
- Enniskillen family
- Enright, Anne, 1962-
- Enright, Daniel, d.1923
- Enright, Liam, d. 2001
- Enright, Margaret, 1855-
- Ensor, George, 1725–1803
- Ensor, George, 1769-1843
- Ensor, John, d. 1787
- Ensor family
- Eogan, George, 1930-2021
- Eogan, George Francis, 1930-2021
- Eogan, George Francis 1930-2021
- Eoghan Ruadh Mac an Bhaird, d. c.1630
- Ephorus
- Equiano, Olaudah, c.1745-1797
- Equiano, Olaudah, c. 1745-1797
- Erasmus, Desiderius, 1466-1536
- Erc, bishop of Slane, d. 513/15
- Erck, Wentworth, 1827-1890
- Erenagh family
- Eriugena, Joannes Scotus, c.810-c.877, see John Scottus Eriugena, c.810-c.870/880
- Ernan, Saint, d. c.640
- Erne family
- Ernene, Saint, fl.c585-c.635
- Ernest Augustus, King of Hanover, 1771-1851
- Erskine, John, Earl of Mar, 1675 – 1732
- Erskine, Robert Lynd, baron Lowry, 1919-1999
- Erskine-Andrews, H. M.
- Eruilb Mac Murchada
- Ervine, David (Walter), 1954-2007
- Ervine, David, 1953-
- Ervine, St John 1883-1971
- Ervine, St John Greer, 1883–1971
- Ervine-Andrews, Harold Marcus, 1911-1995
- Ervine-Andrews, Marcus, V.C., 1911-1995
- Erving, Patrick, , fl. 1759-1765
- Esler, Erminda Rentour, 1860?-1924
- Esmonde, John, 1760-1798
- Esmonde, Letitia, Lady, c.1781-1851
- Esmonde, Osmond Thomas Grattan, 12th baronet, 1896-1936
- Esmonde family
- Espinosa, Mariano Antonio, bishop, 1844-1923
- Esposito, Michele, 1855-1929
- Este, Bishop Charles, 1696-1745
- Estrete, John, fl. 1474-1489 ; FitzGerald, Thomas, 7th earl of Kildare
- Ethel, Lady Inchiquin
- Etheridge, May
- Ethnic groups, non-indigenous
- Ethns, Sister, fl. 1946-2013
- Ettinger, Albert M., 1900-1984
- Eugenius, bishop, fl. 1153-1185
- Eugenius IV (Gabriele Condulmaro), pope, c. 1383-1447
- Eusebius, c.260-c.340
- Euseby, -, bishop, fl. 1798
- Eustace, James, 3rd viscount Baltinglas, d. 1585
- Eustace, James, of Harristown, 3rd Viscount Baltinglass, 1530–1585
- Eustace family
- Evan, John, fl.1884-1918
- Evans, Dorothy, c.1888-c.1944
- Evans, E. Estyn, 1905-1989
- Evans, Edward Benjamin, Major, 1846-1922
- Evans, Emyr Estyn, 1905-1989
- Evans, Emyr Estyn, 1905–1989
- Evans, Florence Mary, 1887-1973
- Evans, Francis Nicholas, c.1846-1912
- Evans, George de Lacy, Sir, 1787-1870
- Evans, Gwynfor
- Evans, James Roderick, 1923-
- Evans, John, 1884-post 1920
- Evans, Joseph, d.1818
- Evans, Marc, fl. 1947-1998
- Evans, Mary Ann (George Eliot), 1819-1880
- Evans, Richardson, 1846-1928
- Evans, Sam, c.1891-1915
- Evans, Samuel, c.1891-1914
- Evans, Sophia, fl 1844
- Evans, Sophie Catherine Peirce- ('Elliott Lynn'; Lady Heath), 1897-1939
- Evans, William, 1798-1877
- Evans-Freke, Algernon William George, 9th Baron Carbery, 1869-1898
- Evans-Freke, Mary, Lady Carbery, 1867-1949
- Evatt, Herbert Vere, 1894-1965
- Everard, John, Sir, c.1560–1624
- Everard, Nugent Talbot, Sir, 1849-1929
- Everard, Richard, Sir, 1st baronet, c.1590-1660?
- Everard family
- Everest, George, Sir, 1790-1866
- Everett, Alice, astronomer, 1865-1949,
- Everett, Katherine, 1872-1954
- Everly, Don, b.1937
- Everly, Phil, 1939-2014
- Evers, Walter, d.1642
- Ewart, Wilfrid, 1892-1922
- Ewart-Biggs, Christopher, CMG, OBE, 1921-1976
- Exshaw, John, 1751-1827
- Exshaw, John 1751-1827
- Eyne, Charles, 1817-1902
- Eyre, Bridgetta, 1789-1867
- Eyre, Charles Petre, bishop, 1817-1902
- Eyre, Edward, 1626-1683
- Eyre, John, 1623-1685
- Eyre, John, 1640-1685
- Eyre, John, fl. 1650s
- Eyre-Powell, John W., d. 1918
- Eyre family
- Eóganacht Áine
- Faber, Christine, 1849-1918
- Faber, Frederick William, 1814-1863
- Fachtna (Fachanan) (c.554–c.600), abbot and founder of Ros Ailithir
- Fachtna, Saint, fl. 500-600
- Fade, Joseph, 1680-1748
- Fagan, Brian, fl.1751-1761
- Fagan, George, d.1907
- Fagan, Luke, bishop
- Fagan, Michael, 1857-1883
- Fagan, Patrick
- Fagan, Patrick, 1922-2011
- Fagan, Robert, 1761-1816
- Fagan, Seán, Fr, 1927-2013
- Fagan, Thomas, fl.1834
- Fagan family
- Fagel, Hendrik, 1706-1790
- Fagel, Hendrik, 1765-1838
- Fagel family
- Fahey, Denis, d. 1954
- Fahey, Denis, Rev., 1883-1945
- Fahey, John, 1883-1959
- Fahie, Norah, 1911-1996
- Fahy, Anthony Dominic, 1805-1871
- Fahy, Bridget. fl. 1921
- Fahy, Francis A., d. 1935
- Fahy, John, 1893-1969
- Fahy, John, 1893–1969
- Fahy, John, d. 1969
- Fahy, Michael, d.1920
- Fahy, Séamus, d.2005
- Fahy family
- Fain, Nicholas
- Fairbairn, William, 1789-1874
- Fairbridge, Kingsley, 1885-1924
- Fairbrother, William, Major, fl. 1765
- Fairburn, Eleanor Mary, 1929-2015
- Fairfax, Malcolm, fl.1880-1882
- Fairfax, Thomas, 3rd baron Fairfax of Cameron, 1612-1671
- Fairfax, Thomas, 1612-1671
- Fairfax, Thomas Fairfax, Baron, 1560-1640
- Fairfield, Charles George, fl. 1822-1853
- Fairholt, Frederick William, 1814-1866
- Fairlie family
- Falconer, Alan
- Falconer, Edmund,
- Falkiner family
- Falkner, Sarah Jane (Jean), 1930-2016
- Fallon, Brian
- Fallon, Conor, 1939-2007
- Fallon, John, c.1897-1980
- Fallon, Johnny, 1976-
- Fallon, Kieren, 1965-
- Fallon, Mark (silversmith), fl. 1696-1737
- Fallon, Padraic, 1905-1974
- Fallon, Patrick, d. 1879
- Fallon, Peter, 1951-
- Fallon, Peter John, 1881-1959
- Falvey, Hannah, b. 1927
- Family, Kearney
- Family of the Earls of Shannon
- Fane, John, 10th earl of Westmorland, 1759-1841
- Fannin, John, fl. 1810
- Fannin, Terry, d.1956
- Fannin, Thomas Alfred, 1874-1939
- Fannin family (of Dublin)
- Fanning, family
- Fanning, James, c.1730-1806
- Fanning, Ronan, 1941-2017
- Fanning, Thomas, 1933-1993
- Fanning family
- Fannyn, Richard, ? - c. 1234
- Fanshawe, Ann, 1625-1680
- Farannan, Saint, d. c.590
- Faris, Alex
- Faris, Alexander, c.1766-1841/1856
- Faris, Richard Charles, 1911-1984
- Farley, John Murphy, Cardinal, 1842-1918
- Farmer, John ; Bateson, Thomas ; Jewett, Randolph ; Hawkshaw, John ; Isaac, Peter ; Hodge, Robert ; Roseingrave, Daniel
- Farmer, John Stephen, 1845?-1915?
- Farmer, Seán, d. 1975
- Farnese, Francesco, 7th Duke of Parma, 1678-1727
- Farnham, Humphrey, d.1624
- Farnham, Lord, 1879-1957
- Farnham family
- Farquhar, Betty, fl.1949-1990
- Farquhar, George, 1677?-1707
- Farrell, Brian, 1929-
- Farrell, Colin, fl. 2006-2009
- Farrell, David, b.1961
- Farrell, Dessie, fl. 2000
- Farrell, Elizabeth, pre-1973-2014
- Farrell, Francis, OFM, c.1597-1663
- Farrell, J.G. (James Gordon), 1935-1979
- Farrell, James Gordon, 1935-1979
- Farrell, James Patrick (‘J. P.’), 1865-1921
- Farrell, James T., d. 1979
- Farrell, Jim (James), 1857-1927
- Farrell, Mairéad
- Farrell, Mary Kate (neé Collins) 1857-
- Farrell, Michael, 1899-1962
- Farrell, Michael, 1940-2000
- Farrell, Michael, fl. 1798
- Farrell, Paul, d. 1734
- Farrell, Richard, 1776-1850
- Farrell, Robert T., 1939-2003
- Farrell, Terrence, 1798-1876
- Farrell, Thomas, 1827-1900
- Farrell, William (Uilliam Ó Fearaíola), 1809-1878
- Farrell, William, 1772-
- Farrell, William, d.1851
- Farrell family
- Farrelly, James, 1837-1866
- Farrelly, John, d. 1736
- Farrelly, Peter Edward, fl. 1852
- Farren, Hugh, 1888-1918
- Farren, John, c.1814-1887
- Farren, Nancy (Anne), 1850-1937
- Farren, Neil, 1893-1980
- Farren family
- Farrington, Anthony
- Farrington, Anthony, fl. 1945
- Farrington, Brian, 1925-
- Farrington, Pat, 1961-2013
- Faul, Denis, Monsignor, 1932-2006
- Faulkner, (Arthur) Brian Deane, 1921-1977
- Faulkner, Arthur Brooke, Sir, 1779-1845
- Faulkner, Brian, 1921-1977
- Faulkner, George, 1699?-1775
- Faulkner, George, 1703-1775
- Faulkner, George 1703–1775
- Faulkner, James, 1825-1911
- Faulkner, Mary, 1918-2012
- Faulkner, Pádraig, 1918-
- Faulkner family
- Fawcett, Thomas (1747-1820)
- Fawsitt, Diarmuid (Jeremiah) (J.L.), 1884-1967
- Fawsitt, Diarmuid (Jeremiah), 1884–1967
- Fawsitt family
- Fay, Daniel, 1887-1942
- Fay, Frank J., 1870-1931
- Fay, William George, 1872-1947
- Fearfeasa Ó'n Cháinte, fl. 1600
- Fearghal Óg Mac an Bhaird, fl. 1600
- Fearon, Benedict, 1924-2020
- Fearon, James, 1874-1924
- Featherston (Fetherston) family
- Featherstone (Fetherstonhaugh), Cuthbert, Revd, 1780-1948
- Fechin, Saint
- Fee (Walker), Mi
- Fee family
- Feehan, James A, 1924-
- Feehan, John
- Feehan, Mickey, fl. 1920s
- Feehan, Thomas, 1896-1920
- Feehan, William, 1929-2001
- Feeley, family
- Feely, John, fl. 1950
- Feely family
- Feeney, Chuck, 1931-
- Feeney, family
- Feeney, Jimme, d.1947
- Feeney, John, 1903-1976
- Feeney, Kathryn, b.1983
- Feeney, Sara Philomena (Sr Maria Goretti), 1930-2011
- Feeney family
- Feerick family
- Feheney, John Patrick Matthew, Br.
- Fehilly, Thomas
- Feichín, Saint, fl. 600-700
- Feidlimid mac Crimthainn, fl.820-847
- Feigh, Thomas F., 1826-1918
- Feilding, Charles, Sir, 1643-1722
- Feinoegl, Gregor, 1760-1837
- Feiritéar, Cáit (Bab), 1916-2005
- Feiritéar, Piaras, c.1600-c.1653
- Feiritéar, Pádraig, 1856-1924
- Feiritéar, Pádraig see Ferriter, Patrick, 1856-1924
- Felix of Squillace, fl. 616
- Felloni, Tony
- Felton, John, 1595?-1628
- Fenelon, John (Fr Joseph), 1875-1963
- Fennario, David, 1947-
- Fennell, Desmond, 1929-
- Fennell, Nuala, 1935-2009
- Fennell, Thomas,
- Fennell, Thomas, d.1960
- Fennell, Thomas McCarthy, 1841-1914
- Fennell family
- Fennelly, John, Revd., 1805-1868
- Fennelly, Stephen, archbishop, 1816-1880
- Fennessy, Bridie Garrett, c.1933 ; Pennefather family ; Kemmis, (née Armstrong), Winona (Jess)
- Fennessy family
- Fenning, Hugh, OP, 1935-2018
- Fenton, Denis, 1888-1954
- Fenton, Geoffrey, Sir, 1539?-1608
- Fenton, John William, 1828-1890
- Ferdinand I, emperor, 1503-1564
- Ferdomnach (died 846)
- Ferdomnach, d. 845
- Fergus, John, d.1761
- Fergus, John, d.1761 ; O'Conor, Charles, 1710-1791
- Fergus mac Róech
- Ferguson, Charles, d. 1832
- Ferguson, Charles, d.1842
- Ferguson, Harry, 1884-1960
- Ferguson, John
- Ferguson, John, 1836-1906
- Ferguson, John, 1836–1906
- Ferguson, Kathleen, fl. 1903
- Ferguson, Samuel, 1810-1886
- Ferguson, Samuel, Sir, 1810-1886
- Ferguson, Sarah Margaret, Duchess of York, b.1959
- Ferguson, William
- Ferguson, William, 1856-1925
- Ferguson, William Owens, 1800-1828
- Ferguson family
- Fergusson, Robert, 1750-1774
- Ferrall, John, 1814-1892
- Ferrall family
- Ferrar, Hartley Travers, 1879-1932
- Ferrar, John, 1742-1804
- Ferreira, Patricia
- Ferrie, John, c.1790-1872
- Ferrier family
- Ferris, John F., Lieut., fl. 1842-1864
- Ferris, Martin, 1952-
- Ferris, Richard, 1754-1828
- Ferris, William, 1881-1971
- Ferris family
- Ferriter, Patrick, 1856-1924
- Ferriter, Pierce, d. 1653
- Ferriter family
- Fetherston family
- Fetherstonhaugh, Richard, 1817-1827
- Fetherstonhaugh family
- ffolliott, Rosemary, 1935-2009
- Ffrench, Edward, Fr, fl.1690
- ffrench, James F. Metge, fl. 1885-1914
- ffrench, James Frederick Metge, fl.1868-1907
- ffrench, John, 1928-2010
- Ffrench, John, 1929-2010
- Ffrench, John, fl. 1888
- ffrench, Kathleen Emily Sophy Alexandra, 1864-1938
- ffrench, Thomas Hamilton, 2nd baron ffrench, c.1765-1814
- ffrench-Mullen, Madeleine,1880-1944
- Fiacc (d. late 5th cent.), bishop of Sléibte (Sletty, Co. Carlow)
- Fiacre (Fiachra), d. c.670
- Fiacre, Saint, d. 670
- Fianna
- Field, Catherine (née Doyle), 1866-1935
- Field, James fl.1942-1962
- Field, John, 1782-1837
- Field, Thomas, 1549-1625
- Field, William, 1843-1935
- Fielde, Olga, 1903-1973
- Fielden, Olga, 1903-1973
- Fielding, George, earl of Desmond, d. 1665
- Fielding, Henry, 1707-1754
- Fielding, James Kieran, d. 1940
- Fields, Arthur, 1901-1994
- Fiennes, William, 1st viscount Saye and Sele, 1582-1662
- Figgins family
- Figgis, Darrell, 1882-1925
- Figgis, Edward Darrell, 1882-1925
- Figgis, Genieve, b.1972
- Filay, Thomas, ? - 1567
- Filgas, Alfons, fl.1920-?
- Filgate, Townley Patten, 1753-1828
- Filgate family
- Film
- Finaghty, James, 1614–p.1671
- Finbarr, Saint
- Finch, Daniel, 2nd earl of Nottingham, 1647-1730
- Finck, Franz Nikolaus, 1867-1910
- Find (mod. Ir. Fionn: arch. Ir. Vind: celt. Vindos)
- Find (Mod. Ir. Fionn; Arch. Ir. Vind; Celt. Vindos) son of Cumall, hero figure and central character of the Fianaigecht cycle
- Findalan, Saint, see Wendel, Saint, 544-617
- Findbarr mac Amairgin, Saint, c.550-
- Findbarr moccu Fiatach, Saint, d. 579
- Findbarr mac Amairgin, Saint, c 550
- Findchú, 6th cent.
- Findlater, Adam
- Findlater family (of Dublin)
- Findlay, John Francis, (Jack), 1877-1972
- Findlay, Robin McNee, 1934-2009
- Findley, William, 1741?-1821
- Finegan, Bernard, bishop, 1837-1887
- Finegan, Patrick, bishop, 1858-1937
- Finegan, Patrick, bishop, d. 1937
- Finerty, John F.
- Finerty, John Frederick, 1846-1908
- Finglas, Patrick
- Finglas, Patrick, d.1537
- Fingleton, John Henry Webb, 1908-1981
- Fingleton, Michael, b. 1938
- Finigan, James Lysaght,1844-1900
- Finlay, Annie, 1854-1934
- Finlay, Denis, d. 2008
- Finlay, John, fl. 1780-1856
- Finlay, Robert,
- Finlay, Thomas A., S. J., 1848-1940
- Finlay, Thomas A., S.J., 1848-1940
- Finlay, Thomas Aloysius, 1848-1940
- Finlay family
- Finn
- Finn, Alicia, (née O'Connell), d.1862
- Finn, bishop of Kildare, fl. 1152
- Finn, Edmund, 1819-1898
- Finn, Edmund, 1880-1914
- Finn, Edward, d. 1777
- Finn, Martin, 1793-1874
- Finn, Mary Paul, Mother, fl.1833-1863
- Finn, Patrick, d. 1941
- Finn, Timothy, d.1918
- Finn, Tom, d.2006
- Finn, William Francis, 1784–1862
- Finn, William Joseph, 1875-1915
- Finnabair, daughter of Queen Medb and King Ailill
- Finncheall, saint, 6th century
- Finnegan, Agnes, 1906-
- Finnegan, John, fl. 1787
- Finnegan, Joseph, 1814-1886
- Finnegan, Patrick
- Finnegan, Tony, d. 2003
- Finneran, F.P., 1901-1975
- Finnerty, John, 1853-1913
- Finnerty, Peter, 1766?-1822
- Finn family
- Finnian, Saint, d. 549-51
- Finnian, Saint, d. 549x51
- Finnian of Movilla, Saint, d. 579
- Finnigan, Dan, d. 2008
- Finnigan, E.S., d. 1905
- Finnis, Valerie Margaret Steriker [married name Valerie Margaret Steriker Montagu Douglas Scott, Lady Montagu Douglas Scott] 1924–2006
- Finn mac Cumhaill
- Finn Mac Cumhaill
- Finopoulos, Eustathios
- Fintan (Munnu) of the moccu Moíe, d. 637
- Fintan, 803-878
- Fintan, Saint
- Fintan, Saint, c.524-c.597
- Finucane, Aengus, 1932-2009
- Finucane, Brendan, 1920-1942
- Finucane, Marian, 1950-2020
- Finucane, Pat, 1949-1989
- Finucane family
- Fionnachta, saint, fl. c.650
- Fionn Mac Cumhail
- Fionntan
- Fionán Cam, fl 6th c.?
- Fionán of Kinnitty
- Firth, Charles Harding, Sir, 1857-1936
- Fishbourne family
- Fisher, Ian, 1943-2021
- Fisher, Jonathan, fl. 1763-1809
- Fisher, Joseph, b.1836
- Fisher, Joseph Robert, 1855-1939
- Fisher, Robert, 1920-1941
- Fisher, William, 1808-1880
- Fisher family
- Fitt, Gerard Martin, Baron Fitt, 1926-2005
- Fittall, William
- Fitton (Fytton), Edward, Sir, 1528-1579
- Fitton (Fytton), Sir Edward, 1528-1579
- Fitton, Edward ,Sir, 1527–1579
- Fitton, Edward, Sir, d. 1579
- Fitz-Simon, Christopher
- fitz Anthony, Thomas, ? - c.1226
- Fitzanthony, Thomas, seneschal of Leinster, d.1229
- fitz Bishop, Milo, fl. 1171
- FitzEustace family
- FitzGerald (née McConnell), Mabel Washington, 1884-1958
- Fitzgerald, Adelaide, Lady, 1860-1942
- Fitzgerald, August Bridget, 1829-1916
- Fitzgerald, Augustus Frederick, 3rd duke of Leinster, 1791-1874
- Fitzgerald, Augustus Frederick, third duke of Leinster, 1791-1874
- Fitzgerald, Barry, 1888-1961
- Fitzgerald, Bridget, 1589-1682
- Fitzgerald, Carlos, 1862-?
- Fitzgerald, Catherine
- FitzGerald, Catherine, fl.1399
- Fitzgerald, Dan,
- Fitzgerald, David, d.1895
- Fitzgerald, David, fl. 1660-1681
- FitzGerald, Desmond
- FitzGerald, Desmond, 29th Knight of Glin, 1937-2011
- Fitzgerald, Desmond, 1888-
- FitzGerald, Desmond, 1888-1947
- FitzGerald, Desmond, 1937-2011
- FitzGerald, Desmond John Edmund, 26th Knight of Glin, 1840-1895
- Fitzgerald, Desmond John Villiers, 29th Knight of Glin, 1937-2011
- Fitzgerald, Dick (‘Dickeen’), 1882-1930
- Fitzgerald, Dick, 1882-1930
- Fitzgerald, Edward, 1770-1807
- FitzGerald, Edward, 1809-1883
- Fitzgerald, Edward, bishop, 1833-1907
- FitzGerald, Edward, Lord
- Fitzgerald, Edward, Lord, 1763-1798
- Fitzgerald, Edward, Lord, 1763-1798 :
- Fitzgerald, Edward, Lord, d.1798
- Fitzgerald, Emilia Mary, Duchess of Leinster, 1731-1814
- Fitzgerald, Emma, 1952-
- Fitzgerald, Francis, d. 1862
- FitzGerald, Frederick, Lord, 1857-1924
- Fitzgerald, Garret, 1926-
- FitzGerald, Garret, 1926-2011
- Fitzgerald, Garret, 1926-2011
- FitzGerald, Garret, 1926-2011 ; Fitzgerald, Garret, 1926-
- Fitzgerald, Garret Hugh, fl. 1838
- Fitzgerald, Gearóid, d. 1534
- FitzGerald, George, 16th earl of Kildare, 1612-1660
- Fitzgerald, George Francis, 1851-1901
- Fitzgerald, George Francis, 1851-1901 ; Hertz, Heinrich Rudolf, 1857-1894
- Fitzgerald, George Francis, 1851-1901 ; Maxwell, James Clerk
- Fitzgerald, George Robert, d. 1786
- FitzGerald, Gerald (Gearóid Iarla), 3rd Earl of Desmond, 1335-1398
- Fitzgerald, Gerald (Gearóid Mór), 1456/7-1513
- FitzGerald, Gerald, 8th Earl of Kildare (Gearóid Mór)
- FitzGerald, Gerald, 8th earl of Kildare, 1456?-1513
- FitzGerald, Gerald, 9th earl of Kildare, 1487-1534
- Fitzgerald, Gerald, 11th earl of Kildare, 1525-1585
- Fitzgerald, Gerald, 11th Earl of Kildare, 1525-1585 ; Stanihurst, Richard, 1547-1618
- FitzGerald, Gerald, 14th Earl of Desmond
- Fitzgerald, Gerald, 14th earl of Desmond, c.1533-1583
- Fitzgerald, Gerald, 14th earl of Desmond, c.1533-1583 :Johnson, Swethin, fl.1572-1583
- Fitzgerald, Gerald, bishop of Cork and Cloyne, fl.1463-1477
- Fitzgerald, Gerald, earl of Desmond, 1338?-1398
- Fitzgerald, Gerald, fl. 1780s
- Fitzgerald, Gerald fitz James, c.1530-1583
- Fitzgerald, Geraldine, 1891-1967
- Fitzgerald, Geraldine, fl. 1916
- Fitzgerald, Henry Gerard, d. 1797
- Fitzgerald, James (1899-1971)
- Fitzgerald, James, 1st Duke of Leinster, 1722-1773
- Fitzgerald, James, 15th earl of Desmond, c.1570-1601
- Fitzgerald, James, 20th earl of Kildare and 1st duke of Leinster, 1722-1773
- Fitzgerald, James, d. 1835
- Fitzgerald, James, Sir, bap.1558-1580
- Fitzgerald, James Fitzpiers, fl. 1594-1599
- Fitzgerald, Jean Kilgar, 1908-1988
- Fitzgerald, Joan
- Fitzgerald, Joan, fl. 1930s
- Fitzgerald, Joan, Lady, d. 1564
- Fitzgerald, Joan, of Desmond
- Fitzgerald, John
- Fitzgerald, John (d. 1800)
- Fitzgerald, John, 1902-1921
- Fitzgerald, John, Colonel, fl. 1780s
- Fitzgerald, John, d.1620
- Fitzgerald, John, d. c.1703
- Fitzgerald, John, Sir, d.1582 ; Mac Craith, Donnchadh ; Fitzgerald family, of Desmond
- FitzGerald, John Bateman, 23rd Knight of Glin, 1755?-1803
- Fitzgerald, John F., 1917-1963
- Fitzgerald, John Fitzedmund, Sir
- FitzGerald, John Francis, 1791-1854
- Fitzgerald, John Francis, fl. 1910-1920
- FitzGerald, John Fraunceis, 24th Knight of Glin, 1791-1854
- FitzGerald, John Fraunceis, 25th Knight of Glin, 1831-1866
- Fitzgerald, John Joseph
- Fitzgerald, John Joseph, 1872-1906
- Fitzgerald, Katherine, countess of Desmond, d. 1604
- Fitzgerald, Katherine, countess of Desmond [called Old Countess of Desmond],d. 1604
- Fitzgerald, Lettice, baroness of Offaly, b. c 1580, d. 1656
- Fitzgerald, Lord Edward (1763-1798)
- Fitzgerald, Lord Edward, 1763-98
- Fitzgerald, Lord Edward, 1763–98
- Fitzgerald, Lucy, Lady
- FitzGerald, Mabel, 1884-1958
- Fitzgerald, Margaret, fl. 1520
- Fitzgerald, Margaret, Lady, d. 1542
- Fitzgerald, Martin, 1917-1945
- Fitzgerald, Martin, d.1927
- Fitzgerald, Mary, 192-?-2012
- Fitzgerald, Mary, 1885-1960
- Fitzgerald, Mary, Dowager Countess of Fingall, 1716-1741
- FitzGerald, Maurice, 6th Duke of Leinster, 1887-1922
- Fitzgerald, Maurice, 6th duke of Leinster, 1887-1922
- Fitzgerald, Maurice, c.1194-1257
- Fitzgerald, Maurice Fitzjohn, fl.1587
- FitzGerald, Maurice fitz Thomas, 1293–1356, 1st earl of Desmond
- Fitzgerald, Michael, d. 2004
- Fitzgerald, Pamela, 1776?-1831
- Fitzgerald, Patrick. b. 1965
- Fitzgerald, Patrick J., 1847-1900
- Fitzgerald, Peter George, Sir, d. 1880
- Fitzgerald, Richard (‘Dick’, ‘Dickeen’), 1884–1930
- Fitzgerald, Richard, 1886-1930
- Fitzgerald, Richard, 1917-1994
- Fitzgerald, Robert, earl of Kildare (1675-1744)
- Fitzgerald, Robert Allan, 1834-1881
- Fitzgerald, Robert Desmond, 1914-1990
- Fitzgerald, Rosaleen (née Dunn, later Benn), d.1982
- Fitzgerald, Séamus, 1896-1972
- Fitzgerald, Thomas
- FitzGerald, Thomas (‘Silken Thomas’), 10th earl of Kildare, 1513-1537
- Fitzgerald, Thomas, 10th earl of Kildare, 1513-1537
- Fitzgerald, Thomas, d. 1611
- Fitzgerald, Thomas, d.1741
- Fitzgerald, Thomas, earl of Desmond, 1426?-1468
- Fitzgerald, Thomas, fl. 1916-21
- Fitzgerald, Thomas fitz John, of Rostellan ; Boyle, Richard, earl of Cork, 1566-1643
- Fitzgerald, Thomas Judkin, third Baronet, d.1864
- Fitzgerald, Walter "reagh", d.1595
- Fitzgerald, Walter, Lord, 1858-1923
- Fitzgerald, William, c.1826-1860
- Fitzgerald, William Robert, 2nd duke of Leinster, 1749-1804
- Fitzgerald, William Vesey, fl. 1822
- FitzGerald family
- Fitzgerald family
- Fitzgerald family, dukes of Leinster
- FitzGerald family, dukes of Leinster
- Fitzgerald family, earls of Desmond
- Fitzgerald family, earls of Desmond,
- FitzGerald family, earls of Kildare
- Fitzgerald family, earls of Kildare
- Fitzgerald family, Knights of Glin
- FitzGerald family, of Desmond
- FitzGeralds, earls of Desmond
- Fitzgibbon, Constantine, 1919-1983
- Fitzgibbon, Edward, 1803-1857
- FitzGibbon, Gerald, d. 1942
- Fitzgibbon, Henry M., fl. 1916-1921
- Fitzgibbon, James, Col., fl. 1836
- FitzGibbon, John, 1st earl of Clare, 1748-1802
- FitzGibbon, John, 1st earl of Clare, 1748–1802
- Fitzgibbon, John, 1st earl of Clare, 1748–1802,
- Fitzgibbon, John, 1708?–1780
- Fitzgibbon, John, b. 1849
- FitzGibbon, John, earl of Clare, 1748-1802
- Fitzgibbon, John, SJ
- Fitzgibbon, Maurice, d.1357
- FitzGibbon family
- Fitzgibbon family
- Fitzgibbon family, White Knights
- Fitzgibbon family, White Knights,
- FitzHarris, Laurence
- Fitzhenry, Jeremiah, 1772-1845
- fitz Henry, Meiler, c.1157-1220
- Fitzjames, James, duke of Berwick, 1670-1734
- Fitz john, William, d. 1326
- FitzMaurice, (née Daly), Anastasia, Countess of Kerry, d.1799
- Fitzmaurice, Ann, Countess, née Petty, 1672-1737
- Fitzmaurice, Arthur Joseph William, 1885-1975
- FitzMaurice, Francis Thomas, 3rd earl of Kerry, d.1818
- Fitzmaurice, George, 1877-1963
- Fitzmaurice, Gerald, 5th earl of Kildare, d. 1432
- Fitzmaurice, Gerald, fifth earl of Kildare, d. 1432
- Fitzmaurice, Henry Charles Keith Petty, 5th Marquess of Lansdowne, 1845-1927
- Fitzmaurice, Henry Charles Keith Petty-, 5th marquess of Lansdowne, 1845–1927
- Fitzmaurice, James, fl. 1570-1575
- Fitzmaurice, James Christopher, (1898-1965)
- Fitzmaurice, Thomas, 1st earl of Kerry, 1668-1741/2
- FitzMaurice family
- Fitzmaurice family
- Fitzmaurice family, earls of Kerry
- Fitzmorris, Gabriel
- Fitz Oliver, Richard Martin, c.1602-1648
- Fitzpatrick (MacGillapatrick), Barnaby (Bernard), c.1535–1581, 2nd baron of Upper Ossory,
- Fitzpatrick, Barnaby, 2nd Baron Upper Ossory, 1535-1581
- Fitzpatrick, Bernard Edward Barnaby, Sir, 2nd Baron Castletown, 1848-1937
- Fitzpatrick, Bernard Edward Barnaby, Sir, 1848-1937
- Fitzpatrick, David Patrick Brian , 1948-2019
- Fitzpatrick, Ellen (née McIntyre), d. 1861
- Fitzpatrick, Florence, 3rd Baron Upper Ossory, d. c.1613
- Fitzpatrick, Frederick, fl.1848-1861
- Fitzpatrick, Jeremiah, d. 1923
- Fitzpatrick, Jerome, Brother, 1878-1910
- Fitzpatrick, Jim, b. 194?
- Fitzpatrick, John, 1871-1946
- Fitzpatrick, John, fl. 1652
- Fitzpatrick, John Bernard, 1812-1866
- Fitzpatrick, John Coleman, d. 1880
- Fitzpatrick, Peter, 1833-1877
- Fitzpatrick, Sean, 1894-1886
- Fitzpatrick, Sean, fl.1921-1939
- Fitzpatrick, Seán, 1948-
- Fitzpatrick, Stella (Winifred), 1917-2007
- Fitzpatrick, Stella, 1917-2007
- Fitzpatrick, Thomas, 1799-1854
- Fitzpatrick, Thomas, 1860-1912
- Fitzpatrick, Thomas, fl. 1820
- Fitzpatrick, William John, 1830-1895
- Fitzpatrick family
- fitz Payn, Ralph, fl. 1208
- FitzRalph, Richard, bishop, b. before 1300, d. 1360
- FitzRalph, Richard, c.1300-1360, Archbishop of Armagh
- FitzRichard, John, Sir
- fitz Robert, Geoffrey, ? - 1211
- fitz Robert, Geoffrey, d.1211
- Fitzroger, William
- Fitzroy, Henry, duke of Richmond and Somerset, 1519-1536
- Fitzsimmins, Robert James "Bob", 1863-1917
- Fitzsimmons, John, 1806-1869
- Fitzsimmons family
- Fitzsimon, Henry, 1566-1643
- Fitzsimon, Patrick, d.1871
- FitzSimon, Samuel Ernest Sydney, 1892-1974
- Fitzsimon, Simon, fl. 1300-1330
- Fitzsimons, Arthur Gerard, 1929-
- Fitzsimons, Patrick, bishop, d. 1769
- Fitz Simons, Thomas (1741?-1811)
- Fitzsimons, Thomas, d. 1680
- FitzStephen, Robert, d. 1182
- fitzThomas, John, fifth lord of Offaly and first earl of Kildare, 1287-1316
- Fitzwilliam, Anne Sidney, d.1604
- Fitzwilliam, Charles William Wentworth, 3rd and 5th earl Fitzwilliam, 1786-1857
- Fitzwilliam, Charles William Wentworth, 5th earl Fitzwilliam, 1786-1857
- Fitzwilliam, Richard, 5th viscount Fitzwilliam, c.1677-1743
- Fitzwilliam, Richard, 5th Viscount Fitzwilliam, c.1677-1743 ; Wilkinson, Sir Nevile Rodwell, 1869–1940
- Fitzwilliam, Richard, 6th viscount Fitzwilliam, ?1711-?1776
- Fitzwilliam, Richard, seventh Viscount Fitzwilliam of Merrion 1745-1816
- Fitzwilliam, Richard, sixth Viscount Fitzwilliam of Merrion 1711-1776
- FitzWilliam, Sir William, 1526 – 1599
- Fitzwilliam, William, 1526–1599
- Fitzwilliam, William, Sir
- Fitzwilliam, William, Sir, 1526-1599
- Fitzwilliam, William Wentworth, 2nd (GB) and 4th Earl Fitzwilliam (Ire.), 1748-1833
- Fitzwilliam, William Wentworth, 2nd and 4th earl Fitzwilliam, 1748-1833
- Fitzwilliam family
- Flaherty, Robert, 1884-1951
- Flaherty, Robert Joseph, 1884-1951
- Flaherty family
- Flaithbertact, abbot of Inis Cathaig
- Flamsteed, John, 1646-1719
- Flanagan (Uí Fhlannagáin, Morton), Deirdre, 1932-1984
- Flanagan, Anthony (Private Frederick Kelly), 1922-1944
- Flanagan, Barry, 1941-2009
- Flanagan, Charles, fl. 1868
- Flanagan, Edward, Fr., 1868-1948
- Flanagan, Fr. Henry, 1918-1922
- Flanagan, James Woulfe, 1864-1922
- Flanagan, John, 1868-1938
- Flanagan, John, 1873-1938
- Flanagan, John, d.1819
- Flanagan, John Stanilaus, Rev. 1821-1905
- Flanagan, John Woulfe, 1815-1869
- Flanagan, John Woulfe, 1852-1929
- Flanagan, Laurence, 1933-2001
- Flanagan, Laurence Norman William, 1933-2000
- Flanagan, Mary Agnes (Bonnie) née Redmond, 1916-2013
- Flanagan, Oliver Joseph, 1920–1987
- Flanagan, Stephen Woulfe, 1816-1891
- Flanagan, T.P., 1929-
- Flanagan, T. P., 1929-2011
- Flanagan, Terence, 1780-1846
- Flanagan, Thomas, 1923-2002
- Flanders, Helen Hartness
- Flanigan, Alexander, 1858-?
- Flann, abbot of Clonmacnoise, fl. 724-733
- Flannery, Bridget, b. 1959
- Flannery, Michael, 1902-1994
- Flannery, Michael, bishop, fl. 1858
- Flannery, Thomas, 1846-1916
- Flannery family
- Flann Sinna (of the Shannon),knig of Tara, d.916
- Flannán, Saint, 8th cent.
- Flatesbury family
- Flatley, John, 1846-1929
- Flatley, Michael Ryan, 1958-
- Flatman, Richard, 1943-2016
- Flatman, Robert Burnett, 1903-1974
- Flavin, Nicholas, c.1951-2018
- Flavin family
- Flaxman, John, 1755-1826
- Fleischmann, Aloys, 1880-1964
- Fleischmann, Aloys, 1910-1992
- Fleming (le Fleming) family, Palatine Barons of Slane (and Newcastle)
- Fleming, Alexander, Sir, 1881-1955
- Fleming, Alexander William
- Fleming, Christopher, 3rd Baron Slane, d.1446
- Fleming, Christopher, OFM
- Fleming, Francis, fl. 1750-1812
- Fleming, John, d.1905
- Fleming, John, d. 1934
- Fleming, John, fl. 1803
- Fleming, John, fl. 1814-1896
- Fleming, John Smith, fl.1822-1823
- Fleming, Lady Sarah (née McElroy), 1881-1949
- Fleming, Lionel, fl. 1965
- Fleming, Michael, b.1913
- Fleming, Nicholas (d. 1416), archbishop of Armagh
- Fleming, Nicholas, d. 1416
- Fleming, Patrick, Sir, 1672-1735
- Fleming, Sir Alexander, 1881-1955
- Fleming, Thomas, Archbishop of Dublin, 1590-1651
- Fleming, Thomas, bishop, 1591x2-1651
- Fleming, Thomas, bishop, fl. 1432
- Fleming family
- Fletcher, Dudley, fl. 1917
- Fletcher, George, fl. 1900-1927
- Flete, William
- Fleury, Eleonora Lilian, 1867-1960
- Flew, Antony, 1923-
- Flin, Edward, d. 1822
- Flinn family
- Flood, Finbarr
- Flood, Francis, d.1921
- Flood, Francis Xavier (‘Frank’), 1901-1921
- Flood, Frank, 1901-1921
- Flood, Grattan, 1859-1928
- Flood, Henry, 1732-1791
- Flood, John Peter, 1903-1990
- Flood, Margaret Greer, 1896-1921
- Flood, Matt
- Flood, Peter, fl. 1803
- Flood, Thomasina Clare, d.2011
- Flood, Tim, 1927-
- Flood, William Henry Grattan, 1857-1928
- Flood, Willie, 1893-1988
- Flood family
- Flower, Robin, 1881-1946
- Flower, Robin Ernest William ("Bláithín" - Little Flower)., 1881-1946
- Flower, Robin Ernest William, 1881-1946
- Fluker, William, fl. 1879-1908
- Flynn, Christy, 1917-
- Flynn, Cornelius, fl. 1922
- Flynn, Elizabeth Gurley, 1890-1964
- Flynn, Jimmy, fl. 1880-1917
- Flynn, John Jack, 1926-2014
- Flynn, Johnny, d.1996
- Flynn, Leontia, 1974-
- Flynn, Liam,
- Flynn, Mike, fl. 1936-1946
- Flynn, Richard d. 1905
- Flynn, Theodore Thomson, 1883-1968
- Flynn, Thomas Joseph, 1915-1995
- Flynn, William J., 1867-1948
- Fogarty, Gerard, 1934-2011
- Fogarty, Matthias (Tysie), 1948-2014
- Fogarty, Michael (Mick), fl. 1946-1993
- Fogarty, Michael, bishop,1859-1955
- Fogarty family
- Foley, Anthony, 1973-2016
- Foley, Catherine (née Butler), 1863-1919
- Foley, Donal
- Foley, Donal, 1922-1981
- Foley, John Henry, 1818-1874
- Foley, Mary, 1835-1912
- Foley,Michael, 1893 -1960
- Foley, Michael, 1893-1960
- Foley, P. J., fl. 1854
- Foley, Patrick, 1858-1926
- Foley, Patrick, bishop, 1858-1926
- Foley, Patrick, bishop, 1858–1926
- Foley, Samuel, bishop,1655-1695
- Foley, Tadhg, fl. 2010
- Folliot, George 1730-1810
- Fontaine, Jacques, 1658-1728
- Fontaine, John, 1693-1767
- Fontaine, Louis-Octave, fl. 1798
- Fontana, Lavinia, 1552-1614
- Food, John Joseph (Seán), 1896-1929
- Foot, Arthur Wynne, 1838-1900
- Foot, Michael, 1913-2010
- Foot, Michael Richard Daniell, 1919-
- Foote family
- Foot family
- Foran, James, 1823-1901
- Foran, Nicholas, bishop, 1784-1855
- Foran, Thomas, 1883-1951
- Forbes, Arthur, earl of Granard, d. 1696
- Forbes, Beatrice (née Mills), Countess of Granard, 1883-1972
- Forbes, Bernard Arthur William Patrick Hastings, 8th Earl Of Granard, 1874-1948
- Forbes, Edward, fl. 1778-1789
- Forbes, Ernest, 1879-1962
- Forbes, Ernest, 1879-1962, alias 'Shemus'
- Forbes, Frank H., 1886-1952
- Forbes, George William, 1869-1947
- Forbes, John, 1750-1797
- Forbes, John, Sir, 1787-1861
- Forbes, John d. 1799
- Forbes, Robert Bennet, 1804-1889
- Forbes, Selina (née Rawdon), Countess of Granard, 1759-1827
- Forbes, Will, 1949-2019
- Ford, Henry, 1863-1947
- Ford, Jack
- Ford, John
- Ford, John, 1894-1973
- Ford, John, 1894–1973
- Ford, Michael, d. 1765
- Ford, Michael, fl. 1807-1864
- Ford, Patrick, 1837-1913
- Forde, Frank, 1900-1915
- Forde, Henry J., Sir, fl.1930
- Forde, Mathew, d. 1812
- Forde, Samuel, 1805-1828
- Forde, William
- Forde, William, 1797-1850
- Foreman, Philip, 1936-2013
- Formica, John Odacio, d. 1696
- Forrest, Theodosius, 1728 – 1784
- Forrestal family
- Forrest family
- Forristal, Laurence, c.1931-2018
- Forsayeth, R.W. fl. 1906-1908
- Forsey, Alexander, fl.1972-1973
- Forstall, Robert
- Forster, Thomas, 1781-1856
- Forster, William, 1818-1882
- Forster, William, fl. 1780-1819
- Forster, William Edward, 1818-1886
- Forster family
- Forterscue, Geraldine, d.1883
- Fortescue, Chichester, d. 1826
- Fortescue, Chichester Samuel Parkinson-, Baron Carlingford and 2nd Baron Clermont, 1823–1898
- Fortescue, Chichester Samuel Parkinson-, Lord Carlingford, 1823-1898
- Fortescue, Frederick Richard Norman, 1823-1867
- Fortescue, J. B.
- Fortescue, John Charles William, 1822-1891
- Fortescue, M.A., d. 1849
- Fortescue, Marianne, fl. 1797-1800
- Fortescue, Mary Anne, 1767-1849
- Fortescue, Mathew, d. 1845
- Fortescue, Rose, d.1910
- Fortescue, Thomas, Lord Clermont, 1815-1887
- Fortescue family
- Fortescue family (of County Louth)
- Fortesque, William Faithful, c.1780-1821
- Fortesque family
- Forth, Charles Gerard, c.1808-1845
- Fortiaran (sic), saint, d. 500
- Fortini, Arnaldo, 1889-1970
- Fortunatus, Venantius, d. 610
- Fortune, Seán, d. 1999
- Fossett, Steve, 1944-
- Fossett family
- Foster, Alexander (Alec) Roulston, 1890-1972
- Foster, Arlene Isabel (née Kelly), b.1970
- Foster, George, 1870-1935
- Foster, James, d. 1890
- Foster, John
- Foster, John, 1st Baron Oriel, 1740-1828
- Foster, John, 1740-
- Foster, John, 1740-1828
- Foster, John, Baron Oriel, 1740–1828
- Foster, John, M.P., 1740–1828
- Foster, John Wilson
Chesney, Helena C. G.
- Foster, Laurence, 1944-
- Foster, Mary Lydia 1867-1943
- Foster, Nevin Harkness, 1858-1927
- Foster, R. F. (Robert Fitzroy) (Roy), 1949-
- Foster, Robert Fitzroy, historian, 1949-
- Foster, Robert Fitzroy, see Foster, R. F. (Robert Fitzroy) (Roy)
- Foster, Roy, see Foster, R. F. (Robert Fitzroy) (Roy)
- Foster, Thomas, 1796x7-1826
- Foster, Thomas Campbell, 1813-1882
- Foster, Thomas Henry, Hon., d. 1843
- Foster, Vere Henry Lewis, d. 1900
- Foster, Vere Henry Louis, 1819-1900
- Foster, William, Z. Sir, 1881-1961
- Foster family
- Fotrell, John, c.1701-1785
- Fottrell, George, Sir, 1849-1925
- Foucault, Léon, 1819-1868
- Fournier, Edmund
- Fournier d'Albe, Edmund Edward, 1868-1933
- Fowkes, Samuel, d. 1745
- Fowler, John, fl. 1798
- Fowler, Joshua, fl. 1870-1912
- Fowler, Lorenzo Niles, 1811-1896
- Fowler, Robert, 1824-1897
- Fowler, Trevor Thomas, 1800-1881
- Fownes, William, Sir, fl. 1739-1757
- Fownes family
- Fox, Arthur Wilson, 1861-1909
- Fox, Caroline Georgiana, baroness Holland, d. 1774
- Fox, Cecil H, -1914
- Fox, Charles James, 1749-1806
- Fox, Charles James, 1749-1806 ; Pitt, William, 1759-1806
- Fox, Chistopher, 'Kit', 1907-1966
- Fox, Christopher
- Fox, Christopher, c.1907-1996
- Fox, Cyril Fred, Sir, 1882-1967
- Fox, George, 1624–1691
- Fox, George Lane, fl. 1830
- Fox, John, fl.1914-1920
- Fox, Luke, c.1854-1912
- Fox, Maxwell, 1826-1899
- Fox, Richard K., 1846-1922
- Fox, Richard Kyle, 1846-1922
- Fox, Rose, 1875-1932
- Foxall, Henry, 1758-
- Foxe, John, 1516-1587
- Foxe family
- Fox family
- Foxhalls, Foxholes
- Foy, Joe, 1841-1918
- Foy, Nathaniel, Bishop of Waterford and Lismore, 1648-1706
- Foy, Nathaniel, d. 1707
- Frame, Robin
- Frances of Rome, Saint, 1384-1440,
- Francis, Mark, b. 1962
- Francisco de Ribalta, 1565-1628
- Francisco di Paola, Saint, 1416-1507
- Francis Ellis, fl.1817-1835
- Francis of Assisi, Saint, d. 1226
- Franckton, John, d. 1620
- Franco, Francisco, 1892-1975
- Franco, Francisco, 1892-1975,
- Frank, Arnold, 1849-1965
- Franke, Thomas, fl.1665-1666
- Franklin, Benjamin, 1706-1790
- Franklin, Jane, Lady, 1792-1875
- Franklin, John, Sir, 1786-1847
- Franklin, Miles, 1879-1954
- Franks, (Gertrude) Lucy, 1878-1964
- Franks, (Gertrude) Lucy, 1878-1964
Roe, Helen Maybury, 1895-1988
- Franks, Augustus Wollaston, 1826-1897
- Franz Ferdinand, Archduke, 1863-1914
- Fraser, Ian James, Sir, 1901-1999
- Fraser, Lovat, fl. 1913
- Fraser, Peter Joseph, c.1894-1916
- Frayne family
- Frazer, Hugh, 1795-1865
- Frazer, Hugh, 1813-1861
- Frazer, John, c. 1804–1852
- Freckleton, William
- Frederic, Harold, 1856-1898
- Frederick, Harold, fl. 1890
- Frederick William III, king of Prussia, 1770-1840,
- Freeman, Alexander Martin, 1878-1959
- Freeman, John, 1933-
- Freeman, Joseph Kelly, 1865-post 1906
- Freeman, Justin Deane, 1882-1920
- Freeman, Samuel, 1773-1857
- Freeman, T. W. (Thomas Walter)
- Freeman, Thomas Walter
- Freeman, Thomas Walter, fl. 1987
- Freeman family
- Freke, Elizabeth, 1641-1714
- Freke family
- French, (William) Percy, 1854-1920
- French, Billy, 1934-
- French, family
- French, Geoffrey, d. 1528
- French, Houston, Lt., fl. 1871
- French, John, 1928-2010
- French, John, d. 1763
- French, John Denton Pinkstone, 1st earl of Ypres, 1852-1925
- French, John Denton Pinkstone, 1st Viscount French
- French, John Denton Pinkstone, Sir, 1st earl of Ypres, field-marshal and lord lieutenant of Ireland, 1852-1925
- French, Nicholas, bishop, 1603-1678
- French, Nicholas, Bishop, 1603-1678
- French, Nicholas, bishop, 1604-1678
- French, Percy, 1854-1920
- French, Peter, Sir, fl. 1619
- French, Robert, 1716-1779
- French, Robert, 1841-1917
- French, Robert, 1841-1917,
- French, Robert, 1841-1917; Lawrence, William Mervyn, 1840-1932
- French, Seán, 1889-1937
- French, Tana, 1973-
- French, Thomas, 1805-1853
- French, William Percy, 1854-1920
- French family
- French family (of Frenchpark [County Roscommon])
- Freney, James, fl. 1754
- Freud, Lucian, 1922-2011
- Frewen, John, d.1849
- Frewen, William, d. c.1899
- Freyer, Peter Johnston, Sir, 1851-1921
- Friedlander, Elizabeth, 1903-1984
- Friel, Brian, 1929-
- Friel, Brian, 1929-2015
- Friel, Brian, 1929-2015 ; Wilde, Oscar Fingal O'Flahertie, 1854-1900
- Friel, Paddy, d.2011
- Friers, Julian, b.1956
- Friers, Rowel
- Frith, Francis, 1822-1898
- Frith, Richard Hastings, c.1815-1873
- Frith, Robert, 1800-1867
- Frith family
- Frizell, Charles, 1738-1812
- Frizell, Jane, fl.1857-1918
- Froissart, Jean, c.1337-c.1410
- Fromont, Jean, Parisian notary, fl. 1701-1730
- Frost, Kingdom Tregosse
- Frost, Kingdon Tregosse, 1877-1914
- Froude, James Anthony, 1818-1894
- Froude, James Anthony, 1818-1894,
- Froude, Richard Hurrell, 1803-1836
- Frow, Ruth, née Engel, 1922-2008
- Fry, Elizabeth, 1780-1845
- Fry, Marie, fl. 1867-1899
- Fry, Paul, Brig. Gen.
- Fry, Roger
- Fryday, Neville Nicolas, 1899-1916
- Frye, Thomas, 1710-1762
- Fryer, Charles, 1854-1944
- Fryer, John Denis, 1895-1923
- Fryer, William Francis, 1829-1914
- Fryer family
- Fráochmac Fidach Foltruad
- Fuchs, Remaclus, c.1510-1587
- Fulbright, James William, 1905-1995
- Fulham, Laurence, 1830-1872
- Fulham, Luke, 1822-1870
- Fulham, Matthew, P.P., fl.1826-1869
- Fullam, Patrick, MP, fl. 1847-8
- Fuller, James Franklin, 1835-1924
- Fuller family
- Fullerton, James, Sir, 1556?-1630
- Fullerton, William, fl. 1689-1692
- Fullerton family
- Fullton, James, d. 1808
- Fulton, Kevin
- Fulton, Robert (1765-1815)
- Fulton family
- Funge, Paddy, d. 2001
- Funge family
- Funnell, Feardorcha
- Furbaide Ferbend
- Furdon family
- Furlong, Alice, c.1875-c.1946
- Furlong, Anastatia (Ciss), 1923-2010
- Furlong, Elizabeth, 1922-2010
- Furlong, Francis (Frank), 1862-1937/38
- Furlong, Jonathan, 1799-1857
- Furlong, Katie, 1873-1894
- Furlong, Mary, 1866-
- Furlong, Nicholas (Claus), c.1860-1939
- Furlong, Nicholas, 1929-2022
- Furlong, Nicky
- Furlong, Thomas, Parish priest of Killegney, fl. 1806-1852
- Furlong, Tobias R.
- Furlong, Tom, Rev., fl. 1840
- Furlong, Tom, Revd, fl. 1840
- Furlong, Walter
- Furlong family
- Furnese, Robert, Sir, 1687-1733
- Furniss, Harry, 1854-1925
- Fursa (Fursey), Saint, d. 649/50
- Fursey, Saint, d. c.650
- Fuseli, Henry, 1741-1825
- Féichín, Saint
- Féval, Paul, 1816-1887
- Fíndchua, Saint
- Fínshnechtae Fledach, son of Dúnchad and king of Tara, d. 695
- Fíonán Cam, Saint, fl. 560-650
- Fíonán of Iveragh
- Fíthil
- Gaddeston, John
- Gaffney, James, fl. 1858-1889
- Gaffney, Jeremiah (Gerald), d.1924
- Gaffney, William, fl. 1798
- Gage, Catherine, 1816-1892
- Gage, Joseph, c.1685-1768
- Gage, Joseph Edward, c.1687-1766
- Gahan, Muriel, 1897-1995
- Gahan, William, 1732-1804
- Gailey, Alan, 1935-2013
- Gailey, R. Alan
- Gainsborough, Thomas, 1727-1788
- Gainsford, Thomas, bap. 1566, d. 1624
- Gaisford-St Lawrence family
- Galbavy, Martin, fl. 2015-2018
- Galbraith, Joseph Allen, 1818-1890
- Galbraith family
- Gale, Martin, b. 1949
- Galenus, Aelius, 129-216
- Galenus, Claudius, 129-199/217
- Galilei, Galileo, 1564-1642
- Gall, Saint, 550?-
- Gallagher, Bridie, 1924-2012
- Gallagher, Bryan
- Gallagher, Cecilie Saunders, 1889-1967
- Gallagher, Christina
- Gallagher, Frank
- Gallagher, Frank, 1893-1962
- Gallagher, Frank, d.2016
- Gallagher, James (Ó Gallchobhair, Séamus), 1684?-1751
- Gallagher, James (Ó Gallchobhair, Séamus), 1684?-1751 ; Byrne, James ; Ó Gealacháin, Peadar
- Gallagher, James E., fl.1916
- Gallagher, Jeremiah, 1838-1914
- Gallagher, John, 1933-2020
- Gallagher, John, 1943-2001
- Gallagher, John, d. 1798
- Gallagher, John Andrew, 1919-1980
- Gallagher, Lisa, 1914-c.1995
- Gallagher, Margaret, 1803-1880
- Gallagher, Paddy (Paddy the Cope), 1873-1964
- Gallagher, Paddy, 1873-1964
- Gallagher, Paddy Edward
- Gallagher, Rory, 1948-1995
- Gallagher , Rory, 1949-1995
- Gallagher, Rory, 1949-1995
- Gallagher, Seán, 1962-
- Gallagher, Thomas, 1851-1925
- Gallagher family
- Gallaher, David (Dave), 1873-1917
- Gallara, Pietro di, fl.1643-1645
- Gallaudet, Edward Miner, 1837-1917
- Gallaudet, Thomas H., 1787-1851
- Gallaugher, Captain Henry, D.S.O., 1886-1817
- Gallaugher, Henry, Capt, 1886-1917
- Gallegan (Galligan), Peter (Peadar Ó Gealacáin), 1793-1860
- Gallegan, Peter, 1792-1860
- Galligan, Peter Paul, 1888-1966
- Galllagher, Pat
- Gallogly, Thomas, 1792-1865
- Gallus (Gall), c.550-c.645
- Gallus (Gall), c.550–c.645
- Gallwey, Andrew,
- Galmoye, Piers, c.1651-1740
- Galphin, George, fl. 1770
- Galvin, Edward, 1882-1956
- Galvin, Edward, bishop, 1882-1956
- Galvin, Edward J., 1882-1956
- Galvin, Ellen ('Nell'), 1887-1961
- Galvin, John, c.1902-1920
- Galvin, John, d.1920
- Galvin, Margaret, d. 1862
- Galvin, Maurice, 1903-1921
- Galvin, Patrick, 1927-
- Galvin family
- Galway, David, S. J., 1579-1634
- Galway, James, Sir, b.1939
- Galway, Mary
- Galway, Mary, 1864-1928
- Galway, Mary, d. 1928
- Galwey, David, SJ, 1579-1634
- Galwey, Michael KCB, General, 1818-1878
- Galwey family
- Gamble, George, c.1737-1798
- Gamble, John
- Gamble, John, 1770-1831
- Gamble, Robert, b.1815/16
- Gamble family
- Gamhranadh
- Gandhi, Mohandas Karamchand, 1869-1948
- Gandhi, Mohandas Karamchand [Mahatma Gandhi], 1869-1948
- Gandolfi, Gaetano, 1734-1802
- Gandon, James, 1742-1823
- Gandy, William, c.1665-1729
- Ganly, Patrick, 1809-1899
- Gannon, Cathal, 1910-1999
- Garbh, Niall
- Garbhan, Saint
- Garcias de Cadiz, Leila, fl.1895-1914
- Garcias de Cadiz, Rosalind, fl.1895-1914
- Garden, Robert Jones, fl.1861-1866
- Garden, Robert T.
- Garden, Robert Theophilus, 1800-1862
- Gardener, Jon, fl.14th century
- Gardiner, Charles, 1782-1829, 1st earl of Blessington
- Gardiner, George, 1820-1891
- Gardiner, Harriet, 1821-1892
- Gardiner, Luke, 1st Viscount Mountjoy, 1745-1798
- Gardiner, Luke, c.1690–1755
- Gardiner, Luke, d. 1798
- Gardiner, Marguerite (Margaret), 1789-1849, countess of Blessington
- Gardiner, Marguerite, countess of Blessington, 1789-1849
- Gardiner, Samuel Rawson, 1829-1902
- Gardner, Phyllis, 1890-1939
- Gardner, Richard, 1842-1916
- Gargan, Denis, fl.1845-1907
- Garibaldi, Giuseppe, 1807- 1882
- Garland, Seán, 1934-2018
- Garland family
- Garner, Margaret, 1903-1999
- Garnet, Henry, Highland 1815-1882
- Garnett, Henry, 1868-1931
- Garnett, John Armstrong, 1767-1831
- Garrahan, Tom, fl. 1844-1912
- Garrett, Henry,
- Garrett, James R., 1820-1855
- Garrett, James Ramsey,
- Garrett, Thomas,
- Garrick, David, 1717-1779
- Garrick, John Philip, fl. 1750-1850
- Garrihy, Colman, 1949-2024
- Garrison, William Lloyd, 1805-1879
- Garry, Jim
- Garstin, Norman, 1847-1926
- Gartlan, Thomas McEvoy, 1800-1886
- Gartland, John, 1921-1945
- Gartside, Thomas, fl.1726
- Garvan, James Patrick, 1843-1896
- Garvey, Edmund
- Garvey, Edmund, 1738/40-1813
- Garvey, Edmund Francis, fl. 1798
- Garvey, John, bishop, 1527-1595
- Garvey, John William Frederick, 1856-1940
- Garvey, Laurence, fl. 1797-1825
- Garvey, Marcus, 1887-1940
- Garvey, Marcus, 1887-1940 ; Walrond, Eric
- Garvey, Marcus Mosiah, 1887–1940
- Garvey, Marcus Moziah, 1887-1940
- Garvey, Patrick, fl. 1866-1876
- Garvey, Patrick J., Monsignor, 1842-1908
- Garvey family
- Garvin, Thomas Christopher, b.1943
- Gaskell, Elizabeth, 1810-1865
- Gaskell, Elizabeth Cleghorn, 1810 - 1865
- Gaskin, Frank
- Gason family
- Gast, John, d. 1788
- Gaston, William (d. 1844)
- Gately, John, 1829-1902
- Gatti, Armand, 1924-
- Gatty (Gillett-Gatty), Katherine, 1870-1952
- Gaughan, John Anthony, 1932-
- Gaughran, Laurence, bishop, 1842-1928
- Gaughran family
- Gaul, Liam, d.2023
- Gaulle, Charles André Joseph Marie de, 1890-1970
- Gault, Graham, 1941-2011
- Gauntier, Gene, 1885-1966
- Gaussen family
- Gavazzi, Alessandro, 1809-1899
- Gavin, Alyson
- Gavin, John, d.2013
- Gavin, Mary, 1864-1945
- Gavin, Nora, 1922
- Gavrillo, Princip, 1894-1918
- Gay, John, 1685-1732
- Gay, Robert, fl.1543
- Gaydon, Richard, fl. 1718
- Gayer, Charles, Rev.
- Gaynor, Hugh, d.1960
- Gaynor, John Santos, 1905-1963
- Gaynor, P.J., fl.1943-1950
- Gaynor, Pat, 1887-1921
- Gaynor, Patrick, d. 1949
- Gaynor, Patrick A. Br, 1819-1892
- Gaynor family
- Geary, Frank
- Geary, Frank (1891–1961)
- Geary, Roy, 1896-1983
- Geary, William, d. 2004
- Geddes, Patrick, Sir, 1854-1932
- Geddes, Wilhelmina (1887-1955)
- Geddes, Wilhelmina, 1887-1955
- Geddes, Wilhelmina Margaret, 1887-1955
- Geddes, Wilhelmina Margaret, 1887-1955,
- Gede, László, 1915-2005
- Geeson, Harry, d. 1941
- Geissel, Hermann, d.2011
- Geldof, Robert
- Gell, William, Sir, 1777-1836
- Gelling, Margaret, 1924-2009
- Gelosse, Stephen, S.J., 1613-post-1675
- Geminiani, Francesco, 1687-1762
- Genevieve, Sr., 1923-
- Geneville (Joinville), Geoffrey de, 1226-1314
- Geneville (Joinville), Geoffrey de, c.1226-1314
- Geneviève, Saint, c.420-c.500
- Gennadius, John,
- Gennadius of Massilia (Gennadius Scholasticus), d.496
- Gentile, Giovanni (1875-1944)
- Gentileschi, Orazio (Orazio Lomi), 1562-1639
- Gentili, -, Fr., 1801-1848
- Geoffrey de Geneville, fl. 1226-1314
- Geoghegan, Catherine "Kate", 1873-1962
- Geoghegan, Ignatius, 1711-1797
- Geoghegan, Joseph A., fl.1905-1957
- Geoghegan family
- George, Christopher T.
- George, Henry, 1839-1897
- George, Lloyd, 1863-1945
- George, Prince of Wales, 1762-1830
- George, Saint, d. c.303
- George Galphin, 1708–1780
- George I, king, 1660-1727
- George II, king, 1683-1760
- George III, king, 1738-1820
- George IV (George Augustus Frederick); 1762-1830
- George IV, king, 1762-1830
- George V, king, 1865-1936
- George VI, king, 1895–1952
- Geraghty, Denis, 1899-1918
- Geraghty, Graham, 1973-
- Geraghty, Hugh, 1945-2007
- Geraghty, Jack, fl. 1928
- Geraghty family
- Gerald, of Wales, c.1146-1220x23
- Geraldine family
- Gerald of Mayo, Saint, d.732
- Gerald of Mayo, Saint, d. 732
- Gerald of Wales (Giraldus Cambrensis), c.1146-c.1223
- Gerald of Wales (Giraldus Cambrensis), c.1146c-c.1223
- Gerald of Windsor
- Gerard, Maria Clare (nee Tasburgh), fl.1737-1749
- Gerard, William, Sir, d. 1581
- Gerard of Csanád, saint and bishop, d.1046
- Geratty, Edward, d.1858
- Gerlack, Ernst Ludwig
- Germain, George Sackville, 1st viscount Sackville, 1716-1785
- Germain, George Sackville, 1st viscount Sackville, 1716-1785.
- Germanotta, Stefani Joanne Angelina (Lady Gaga), 1986-
- Germanus of Auxerre, bishop and saint, d. 446
- Gernon, Anthony, OFM, c.1610-1680
- Gerrard, E., Captain
- Gerrard, Gilbert
- Gerrard, John, b. 1974
- Gerrard, John Netterville, c. 1772-1858
- Gerrard, Marcella, d. 1865
- Gerrard, Marcella Netterville, d. 1865
- Gerrard, Paddy, b.1932
- Gerrard, William, d. 1581
- Gertzman, Jay A.
- Gervase, of Tilbury, b. c.1160, d. in or after 1222
- Gesses, Wilhelmina, 1887-1955
- Gheeraerts, Marcus, 1561/2-1636
- Ghose, Aurobindo, 1872-1950
- Gibb, Robert, 1845-1932
- Gibbings, Robert, 1889-1958
- Gibbings, Robert John, 1889-1958
- Gibbon, Anne, 1798-1886
- Gibbon, Edward, 1737-1794
- Gibbon, Lewis Grassic, 1901-1935
- Gibbon, Monk, 1896-
- Gibbon, Peter, historian
- Gibbon, William Monk, 1896-1987
- Gibbons, Ann, d.2022
- Gibbons, Grinling, 1648-1721
- Gibbons, James (Jim), 1924-1997
- Gibbons, James, d. 1947
- Gibbons, James, fl. 1863
- Gibbons, John, b. 1949
- Gibbons, John, b.1949
- Gibbons, John, fl. 1840-1853
- Gibbons, John Henry
- Gibbons, Luke
- Gibbons, Margaret (Peg), d,2014
- Gibbons, Mother Columba, 1873-
- Gibbons, Phil
- Gibbons, Scholastica, d. 1901
- Gibbs, James
- Gibbs, James, 1682-1754
- Gibney, Frank, 1905-1978
- Gibney, Frank, 1905–1978
- Gibney, Matthew, 1837-1925
- Gibney family
- Gibson, Alexander, c. 1790-1858
- Gibson, Charles Benson, 1808-1885
- Gibson, Edward, 1st lord Ashbourne, c.1837-1913
- Gibson, F. C., 1874-1953
- Gibson, James d.1953
- Gibson, John, 1926-
- Gibson, Joseph Laughlin, fl. 1900-1970
- Gibson, William (Mac Giolla Bhríde, Liam), 2nd Baron Ashbourne, 1868–1942
- Gibson, William 189?-1954
- Gibson, William Kennedy, fl. 1895
- Giesecke, Charles Lewis, Sir, 1761-1833
- Giesecke, Karl Ludwig, 1761-1833
- Giffard, John, 1745-1819
- Giffen, Robert, Sir, 1837-1910
- Giffin, Thomas, d.1815
- Gifford, Ada Gertrude, 1882-c.1953
- Gifford, Grace (Evelyn), 1888–1955
- Gifford, Grace, 1888-1955
- Gifford, Helen Ruth, 1880-1971
- Gifford, Julia
- Gifford, Muriel, 1884-1917
- Gifford, Sydney, 1889-1974
- Gilbert (Gille, Gilla, Gilli), bishop of Limerick, d. 1145
- Gilbert (Gille, Gilla, Gilli), bishop of Limerick, d. 1145
- Gilbert (Gille, Gilla, Gilli), bishop of Limerick, d. 1145,
- Gilbert (Gille, Gilla, Gilli), d. 1145
- Gilbert, Annie, 1889-1988
- Gilbert, Bishop of Limerick, d. 1145
- Gilbert, Claudius, 1670-1743
- Gilbert, Elizabeth Rosanna, (Lola Montez), 1821-1860
- Gilbert, Humphrey, Sir, 1539?-1583
- Gilbert, J. T. (John Thomas), Sir, 1829-1898
- Gilbert, J. T., see Gilbert, J. T. (John Thomas), Sir, 1829-1898
- Gilbert, John T., Sir, see Gilbert, J. T. (John Thomas), Sir, 1829-1898
- Gilbert, John Thomas, Sir, 1829-1898
- Gilbert, Rosa, Lady, 1841-1921
- Gilbert, Rosa, Lady, 1841-1921 ; Moore, George Augustus, 1852-1933
- Gilbert, Sir John Thomas, 1829–98
- Gilbert, Stephen
- Gilbert, W. S., 1836-1911
- Gilbert of Limerick, fl. 1111
- Gilbert of Sempringham [St Gilbert of Sempringham], 1083–1189
- Gilchrist, Joe, 1916-
- Gildas, Saint, 516?-570?
- Gildea, James, 1838-1920
- Gildernew family
- Giles of Rome (Aegidius Romanus), c. 1243/1247–1316
- Gilhawley, Elizabeth, 1918-2015
- Gill, Barbara, 1958-2007
- Gill, Frank, 1866-1950
- Gill, Henry, SJ
- Gill, Henry Joseph, 1836-1903
- Gill, Mary Ann
- Gill, Maura (Mollie), 1891-1977
- Gill, Michael H. (1794?–1879)
- Gill, Michael J. (1871–1913)
- Gill, Mollie, 1891-1977
- Gill, Mollie, see Gill, Maura (Mollie), 1891-1977
- Gill, Randal, 1946-2012
- Gill, Randal David, 1946-2012
- Gill, Robin (Robin Gill of Edenmore) fl.1798
- Gill, Vincent, fl.1936-1972
- Gill, William J.
- Gilla-Cóemáin (Gilla-Cóemgin), fl. c.1072
- Gilla Cóemáin
- Gilla Cóemáin, poet, fl.1072
- Gilla Espaic of Limerick, fl. 1070
- Gillan, Lizzie Crawford, 1875-1950
- Gilla na Náem Ua Duinn, d. 1160
- Gillan family
- Gilla Pátraic, bishop, d. 1084
- Gillebert of Limerick see Gilbert (Gille, Gilla, Gilli), bishop of Limerick, d. 1145
- Gillen, Gerard, 1942-
- Gille of Limerick, bishop, d. 1145
- Gillespie, Henry (Brother Andrew), 1837-1917
- Gillespie, Raymond 1955-2024
- Gillespie, Rowan Fergus Meredith, b.1953
- Gillespy, Edward, fl. 1810
- Gill family
- Gillies, William
- Gilligan, John, 1952-
- Gilliland, J. A. fl.1910.
- Gillis, Charles, Rev., 1821-1903
- Gillis, Charles, Revd, 1821-1903
- Gillman family
- Gillmor family
- Gillooly, Laurence, d. 1895
- Gillott, Thelma,fl.c.1930-c.2013
- Gillé, August, c.1892-1989
- Gilmartin, Michael, fl. 1927-1934
- Gilmartin, Thomas Patrick, Archbishop, 1861-193
- Gilmartin, Thomas Patrick, Archbishop, 1861-1939
- Gilmore, Eamon, 1955-
- Gilmore, George Frederick, 1898-1985
- Gilmore, John
- Gilmore, John Edmund, 1928-2002
- Gilmore, John Joseph, 1900-1945
- Gilmore, Michael, fl. 1997
- Gilmore, Patrick Sarsfield, 1829-1892
- Gilmore family
- Gilpatrick, Jerome, 1877-1910
- Gilpin, Joshua, fl. 1795-1801
- Gilpin, William Sawrey, 1761/2-1843
- Gilpin family
- Gilsenan, Matthew, 1856-1950
- Gilson, Laurence, c.1740-1810
- Gingles, Graham, b. 1943
- Ginkel, Godert de, 1st earl of Athlone, d. 1703
- Ginnell, Laurence, 1852-1923
- Ginnell, Laurence, 1852–1923
- Giolla Comáin, ?-1135
- Giolla ne Naomh Mac Aodhagáin, fl. 1200-1300
- Giolla Íosa Mac Fhir Bhisigh, d. 1418
- Giordani, Tommaso, d. 1806
- Giovio, Paolo, 1483-1552
- Giraldus Cambrensis, see Gerald, of Wales, c.1146-c.1220x23
- Girard, F., fl. 1824-1833
- Giri, Varahagiri Venkata, 1894-1980
- Girvan, John
- Given, Maxwell
- Given, Samuel, fl.1786-1790
- Givens, Thomas P., 1888-1958
- Glacken, Edward, 1806-1894
- Gladstone, Herbert John, viscount Gladstone, 1854-1930
- Gladstone, William Ewart, 1809-1898
- Gladstone, William Ewart, 1809-1898 ; Gordon, Charles George, 1833-1885
- Gladstone, William Ewart, 1809-1898 ; Manning, Henry Edward, cardinal, 1808-1892
- Gladstone, William Ewart, 1809-1898 ; Moody, Theodore William, 1907-1984 ; Parnell, Charles Stewart, 1846-1891
- Gladstone, William Ewart, 1809-1898 ; O'Brien, R. Barry, 1847-1918
- Gladstone, William Ewart, 1809-1898 ; Parnell, Charles Stewart, 1846-1891
- Gladstone, William Ewart, 1809-1898 ; Victoria (Alexandrina Victoria),Queen of the United Kingdom of Great Britain and Ireland (1819-1901)
- Glasgow, Ellen, d. 1945
- Glasgow, James, 1805-1890
- Glass, Mabel, 1913-1967
- Glass, Sheila, 1914-1989
- Glastonbury, John of, fl. 1400
- Gleason, Gerry, ?
- Gleasure, Peter, 1885-1940
- Gleeson, Evelyn, 1855-1944
- Gleeson, Francis, 1884 –1959
- Gleeson, Harry, d. 1941
- Gleeson, Margaret (née Burke), 1871-1954
- Gleeson, Mary, c.1854-1912
- Gleeson, Patrick, 1904-
- Gleeson, William, 1853-1932
- Gleeson family
- Gleitze, Mercedes, (later Carey), 1900-1981
- Glen, Cushy, d. c 1799-1801
- Glendenning, Robert Graham, 1844-1928
- Glendy, John, d. 1832
- Glennon (née Clancy), Nora (Nan), 1901-1934
- Glennon, Michael, d. 1785
- Glennon, Tom, 1900-1967
- Glinn, John, fl. 1740-1743
- Glover, Ann, fl. 1688
- Glover, Joseph
- Glover family
- Glyn Dr, Owain, c.1355-c.1416
- Glyn Dwr, Owain, c.1355-c.1416
- Glyndŵr, Owain, c.1354-c.1416
- Glynn, John d. 1799
- Glynn, Martin (Mattie)
- Glynn, Michael, d. 1917
- Glynn, Patrick McMahon, 1855-1931
- Glynn, Tom, 1881-1934
- Glynn, William Mortimer, 1895-1993
- Glynn family
- Goan, Cathal
- Goble, George, d. 1906
- Gobnat, Saint
- Godfrey, Boyle, fl.1742-1743
- Godfrey, Edmund Berry, Sir, d. 1678
- Godfrey, Eleanor, 1772-1852
- Godfrey, family
- Godfrey, John, fl.1725-1729
- Godfrey, John Fermor, Sir, fl.1863-1881
- Godfrey, Mary Henrietta, 1861-1950
- Godfrey, William Duncan, Sir, 1797-1873
- Godkin, Edwin Lawrence, 1831-1902
- Godley, Alexander, Sir, 1867-1957
- Godley, Alexander John, 1867-
- Godley, John Robert, 1810-1861
- Godley, John Robert, 1814-1861
- Godley, William, d. 1779
- Godley family
- Godley family (of Killegar)
- Godley family ; Godley, Anna
- Godred, king of Man and the Isles, d. 1187
- Godred Crovan, king of Man and the Isles, d. 1095
- Godred Crovan, king of Man and the Isles, d.1095
- Godred II Olafsson, King of Man and the Isles, d.1187
- Godwin, Edward William, 1833-1886
- Godwin, Mary Wollstonecraft, 1759-1797
- Godwin, Mary Wollstonecraft, 1759-1797,
- Godwin, William, 1756-1836
- Goertz, Hermann, (1890-1947)
- Goertz, Hermann, 1890-1947
- Goethe, Johann Wolfgang von, 1749-1832
- Goetz, Karl, 1875-1950
- Goff, Dinah, 1784-post 1856
- Goff, Dinah, fl. 1798
- Goff, Thomas, 1772-1844
- Goff family
- Gofraidh Fionn Ó Dálaigh, d. 1387
- Gogarty, Oliver St John, 1878-1957
- Gogarty, Thomas, Fr, historian, 1877-1949
- Gogarty family (of Renvyle, Co. Galway)
- Goggin, G.M.
- Goldberg, Gerald Y., 1912-2003
- Goldberg, Gerald Yael, 1912-2003
- Goldberg, Louis
- Golden, Dan, b.1909
- Golden, John, 1844-1883
- Golden, Peter, 1877-1926
- Golding, Hugh, d.1377 ; Golding, Walter, c.1372-post 1399 ; Richard II, King, 1367-1400
- Golding family
- Goldman, John, fl. 1931-1935
- Goldsmid, Francis Henry, Sir, d. 1878
- Goldsmith, Oliver, 1728-1774
- Goldsmith, Oliver, 1728?-1774
- Goligher, William Alexander
- Gonne, Edith Maud, 1866-1953
- Gonne, Edith Maud, 1866-1953, see MacBride, Maud Gonne, 1866-1953
- Gonne, Iseult, 1894-1954
- Gonne-Bell family
- Gonzaga, Charles de, duke of Nevers, 1580-1637
- González de Mendoza, Pedro
- González Oliveros, Wenceslao, 1890-1965
- Gooch, George Peabody, 1873-1968
- Good, Joe, 1895-1962
- Good, William, 1527-1578/79
- Good, William, 1527-1586
- Goodacre, John, fl. 1872
- Goodall, Abraham, d. 1892
- Goodall, David, Sir
- Goodall family
- Goodbody, Lydia 1809-1886
- Goodbody, Reggie, 1940-
- Goodbody, Robert James, 1815-1893
- Goodbody family
- Goode, William, 1527-1586
- Goodfellow, Benjamin, 1864-1946
- Goodly, James, d.1916
- Goodman, Christopher, 1520?-1603
- Goodman, James (Séamus Gudman) 1828--1896
- Goodman, James, 1828-1896
- Goodman, Nuala, 1962
- Goodman, Séamus, 1828-1896
- Googe, Barnabe, 1540-1594
- Gookin, Daniel, d. 1687
- Gookin, Vincent, d. 1659
- Gookin, Vincent, d.1659
- Goold, Honora, fl. 1802
- Goold, James Alypius, O.S.A., 1812-1886
- Goold, Thomas, d. 1846
- Goold-Verschoyle, Brian, b. c 1912, d. 1942
- Goold-Verschoyle family
- Goold family
- Goonan, Silvester, 1750-1796
- Goonan, Silvester, d. 1796
- Gordillo, Francisco
- Gordon (Marjoribanks), Dame Ishbel Maria, marchioness of Aberdeen and Temair, 1857–1939
- Gordon, Adoniram Judson, 1836-1895
- Gordon, George, 2nd marquess of Huntly, c.1590-1649
- Gordon, George, 6th earl of Huntly ; Gordons of Huntly
- Gordon, Ishbel Maria, marchioness of Aberdeen and Temair, 1857-1939
- Gordon, James Bentley, Rev., 1750-1819
- Gordon, James Bentley, Revd, 1750-1819
- Gordon, Joe, f.1937-1955
- Gordon, John Campbell, 1st marquess of Aberdeen and Temair, 1847-1934
- Gordon, John Clement, bishop, 1644-1726
- Gordon, Robert, d. 1784
- Gordon, Samuel, d.1898
- Gordon, William, fl. 1803-1820
- Gordon Rudmose-Brown, Anne, 1907- ; Ó Conaire, Pádraic, 1882-1928
- Gore, John, d. 1694
- Gore, John Ellard, 1845-1910
- Gore, Sir St. George, 1811-1878
- Gore, St George, Sir, 1811-1878
- Gore, Violet
- Gore-Booth, Constance, Countess Markievicz, 1868-1927
- Gore-Booth, Eva (Selina Laura) 1870-1926
- Gore-Booth, Eva, 1870-1926
- Gore-Booth, Eva Selina, 1870-1926
- Gore-Booth, Robert, Sir, 4th Baronet, 1805-1876
- Gore-Booth family
- Gore Booth, Robert, Sir, 1805-1876
- Gore family
- Gore family, earls of Arran
- Gorges family
- Gormally, Joe, 1913-2011
- Gorman, Edward,
- Gorman, John, Sir, 1923-
- Gorman, Richard, b. 1946
- Gorman, William Moore (Terence), 1923-2003
- Gormanston family
- Gorman`, William Moore (Terence), 1923-2003
- Gormfhlaith, d. 947
- Gormlaith, d.1030
- Gormley, James, 1891-1916
- Gormáin, Finn Ua, Bishop of Kildare, d. 1160
- Gorry family
- Gosford family
- Goss, William Henry, 1833-1906
- Gosse, William, fl. 1351-1361
- Gosselin, Nicholas, Major, d. 1917
- Gosset, William Sealy, 1876-1937
- Gosset, William Sealy, 1876-post-1935
- Gosson, May, b. 1924
- Goudy, Rev. Alexander Porter, 1809-1858
- Goudy, Revd Alexander Porter, 1809-1858
- Gougaud, Dom Louis, O. S. B.
- Gough, Hubert de la Poer, 1870–1963
- Gough, Hubert De La Poer, Sir, 1870-1963
- Gough, Hugh, Sir, 1st viscount Gough, 1779-1869
- Gough, Hugh, Sir, 1779–1869, 1st Viscount Gough
- Gough, Maurice, fl. 1840
- Gough, William, fl.1848
- Gough family
- Gould, Robert, fl. 1725
- Goulding, Cathal, 1923 – 1998
- Goulding, Cathal, 1923-1998 ; Mac Stiofáin, Seán, 1928-2001
- Goulding, Valerie, Lady, 1918-2003
- Goulet, Yann-Renard
- Goulston, Theodore, bap. 1575, d. 1632
- Gow, Andrew Carrick, 1848-1920
- Gowan, J.E., d.2002
- Gowan, Jim, c.1925-2002
- Gowan, John, Fr, 1816-1897
- Gowan, John, Fr 1817-1897
- Gowan, Ogle Robert, 1796-1876
- Gower, John, 1325?-1408
- Gower, John, fl. 1841-1843
- Grabisch, Agatha Marshall Bullitt, 1875-1948
- Grace, John
- Grace, John Austin, 1800-1886
- Grace, Peter, fl.1844-1870
- Grace, Richard, d. 1691
- Grace, Sheffield, 1788-1850
- Grace, William, fl. 1842-1855
- Grace, William Russell, 1832-1904
- Grace family
- Gracey, Alexander Leslie, 1823/4-1886
- Gracey, Alexander Leslie, d. 1886
- Gracey, Frederick William, 1883-1950
- Gracie, Archibald, 1852-1912
- Gracie, Archibald, 1858-1912
- Grady, Helen (née Richards), fl.1820-1828
- Grady, Henry Deane, ?1764-1847
- Grady, James, b.c.1895
- Grady, John Hely Hutchinson, 1811-1843
- Graham (née Donegan), Mary Maria, 1844-1930
- Graham, Charles Irvine, d.1911
- Graham, Godfrey, b.1936
- Graham, Hellen, d.1709
- Graham, J., d. 1915
- Graham, James, 1st marquis of Montrose, 1612-1650
- Graham, James, 1791-1845
- Graham, James Robert George, Sir, 1792-1861
- Graham, John, 1899-1983
- Graham, John, c.1803-
- Graham, Marcus William Robert de Vere, 1915-1995
- Graham, Mary
- Graham, Matthew Moore
- Graham, Patrick, b. 1946
- Graham, Peter, 1847-1018
- Graham, Robert, 1784-1859
- Graham, Walter, fl. 1798
- Graham, William, 1810-1883
- Graham, William, Lieutenant, fl.1624-1641
- Graham, William Franklin, 1918-
- Graham-Campbell, James
- Graig, James, 1871-1940
- Grainger, John, Canon, 1830-1891
- Grainger, William Henry, Dr, 1845-1932
- Gralton, James, 1886-1945
- Gralton, Jimmy, 1886-1945
- Grand, Sarah, 1854-1943
- Grandy, Richard, d. 1812
- Grant, Bernard, Rev., 1862-1893
- Grant, Bernard, Revd, 1862-1893
- Grant, Drummond, d.1909
- Grant, Elizabeth, 1797-1885
- Grant, Felix, d.1960
- Grant, Jerry, d. ?c.1850
- Grant, Katherine Whyte, 1845-1928
- Grant, Patrick, fl. 1798
- Grant, Peter, d. 2003
- Grant, Ulysses S., 1822-1885
- Grant-Sturgis, Mark Beresford Russell, Sir, 1884-1949
- Grant family
- Grasett, George, 1811-1847
- Grattan, Henry, 1746-1820
- Grattan, Henry, 1746–1820
- Grattan, Henry 1746-1820
- Grattan, James, d.1854
- Grattan, John, 1800-1871
- Grattan, Richard, 1790-1866
- Grattan, Henry, 1746-1820
- Grattan family
- Graunt, John, 1620-1674
- Graves, Alfred, Perceval, 1846-1931
- Graves, Alfred Perceval, 1846-1931
- Graves, Charles, 1812-1899
- Graves, Helena (née Perceval), fl.1806-1819
- Graves, James, 1815-1886
- Graves, James, 1816-1886
- Graves, James, 1833-1911
- Graves, James, Revd., 1815-1886
- Graves, Robert van Ranke, 1895-1985
- Graves family
- Gray, Alexander, 1858-1916
- Gray, Betsy, 1780-1798
- Gray, Caroline Agnes, 1848-1927
- Gray, David
- Gray, David, 1870–1968
- Gray, Edmund Dwyer, Jnr., 1870-1945
- Gray, Edmund Dwyer Jr, 1870-1945
- Gray, Edmund William Dwyer, 1845-1888
- Gray, Edmund William Dwyer, 1845–1888
- Gray, Edward, 1776-1856
- Gray, Edward Dwyer, 1845-1888
- Gray, Eileen, 1878-1976
- Gray, Elizabeth (‘Betsy’) d. 1798
- Gray, Elizabeth, died 1798
- Gray, James Newcomen Booker, 1829-1913
- Gray, Jimmy, 1929-2023
- Gray, John, 1866-1934
- Gray, John, 1947-
- Gray, John, Sir, 1816–1875
- Gray, Lucy, 1840-1879
- Gray, Michael
- Gray, Michael, Commandant
- Gray, Mick, 1898-1985
- Gray, Philip, d. 1857
- Gray, Richard Armstrong, 1819-1899
- Gray, Rosa, 1895-1986
- Gray, Thomas (d. 1892)
- Gray, William, c.1831-c.1917
- Gray, William Samuel, 1834-1881
- Gray, William Samuel 1834-1881
- Graydon, George, Rev., 1753-1803
- Graydon, George, Revd, 1753-1803
- Graydon family
- Gray family
- Grayles family
- Greacen, Robert, 1920-
- Greacen, Robert, 1920-2008
- Greatrakes, Valentine, 1628-1683
- Greatrakes, Valentine, 1628–1683
- Greatrakes, Valentine, 1629-1683
- Greaves, C. Desmond, 1913-1988
- Greaves, Charles Desmond, 1913-88
- Green, Alice Sophia Amelia, 1847-1929
- Green, Alice Sophia Amelia Stopford, 1847-1929
- Green, Archie
- Green, Catherine (née Dwire) (Cáit Graídhin) d.1819
- Green, Harold, d.1917
- Green, Jimmy, 1941-2021
- Green, John Richard, 1837-1883
- Green, Julien, fl. 1975
- Green, Rodney, 1920-1981
- Green, William Alfred, 1870-1958
- Green, William Spotswood, 1847-1919
- Greenan, Mary, b.1910
- Greene, (Henry) Graham, 1904–1991,
- Greene, Benjamin, fl. 1921
- Greene, David, 1913-2002
- Greene, David, 1915-1981
- Greene, David William [Dáithí Ó hUaithne], 1915-1981
- Greene, Fred, fl. 1939-1945
- Greene, Graham
- Greene, John, fl. 1830
- Greene, John F., P.P., 1904-1973
- Greene, Joseph, 1808-1890
- Greene, Michael, 1808-1890
- Greene family
- Greenwell, Henry Nicholas, 1826-1891
- Greenwood, Hamar, 1st Viscount Greenwood, 1870-1928
- Greer, James, 1845-1929
- Greer, James, d. 1929
- Greer, Patrick, fl. 1900-1989
- Greer, Thomas
- Greer, Thomas, 1724-1803
- Greer, William, 1910-1985
- Greg, Thomas, Belfast merchant, fl. 1787
- Greg, Thomas, fl. 1756-1757
- Greg, Thomas 1718-1796
- Gregg, Harry, b.1932
- Gregg, John A. F., Archbishop of Armagh
- Gregg, John Allen Fitzgerald, bishop, d. 1961
- Gregg,Robert Studdert, 1896-1916
- Gregg, Thresham Dames, Rev., 1800-1881
- Gregg, Tresham Dames, 1800-1881
- Gregor family
- Gregory, (William) Robert, 1881–1918
- Gregory, Edmund, 1956-
- Gregory, Isabella Augusta, Lady, 1852-1932
- Gregory, Isabella Augusta, Lady, 1852-1932 ; Joyce, James Augustine, 1882-1941
- Gregory, Isabella Augusta, Lady, 1852-1932 ; Joyce, James Augustine, 1882-1941 ; Synge, (Edmund) John Millington 1871-1909
- Gregory, Isabella Augusta, Lady, 1852-1932,
- Gregory, John, fl. 1880
- Gregory, Lady (Isabella Augusta), 1852-1932
- Gregory, Lady, 1852-1932
- Gregory, Robert, fl. 1917
- Gregory, Tony, 1947-2009
- Gregory, Vere, 1871-1957
- Gregory, William Henry, Sir, 1817-1892
- Gregory, Isabella Augusta, Lady 1852 1932 ; Lane, Hugh Percy, Sir, 1875-1915 ; Yeats, W. B. (William Butler), 1865-1939
- Gregory I, pope and saint, c.540-604
- Gregory of Nazianzus, c.329-390
- Gregory VII, pope and saint, 1020-1085
- Grehan, Stephan, 1858-1937
- Grehan, Tom
- Grehan family
- Greig, William Sydney, c.1914- c.77
- Grene, Nicholas
- Grenville, George Nugent-Temple-, 1st marquis of Buckingham, 1753-1813
- Grenville, George Nugent Temple, 3rd Earl Temple, 1st marquess of Buckingham, 1753-1813
- Grenville, George Nugent Temple, 1753-1813
- Grenville, Richard, Sir, bap. 1600, d. 1659
- Grenville, William Wyndham, baron Grenville, 1759-1834
- Gresson, George, fl. 1860
- Gresson, Kenneth MacFarlane, Sir, 1891-1974
- Gresson, Richard Arbuthnot Reynell, 1899-1986
- Greville, Francis, 1st Earl of Warwick, 1st Earl Brooke, 1719-1773
- Greville, Robert, 2nd baron Brooke, 1607-1643
- Grey, Arthur, 14th baron Grey de Wilton, 1536-1593
- Grey, Charles, 2nd earl Grey, viscount Howick & baron Grey, 1764-1845
- Grey, Charles, fl. 1830
- Grey, George, Sir, 1812-1898
- Grey, Henry George, 3rd earl Grey, 1802-1894
- Grey, Henry George, Earl Grey, 1802-1894
- Grey, Leonard, Lord
- Grey, Leonard, Viscount Graney, c.1490-1541
- Grey, Thomas Philip, earl de grey, 1781-1859
- Grey de Wilton, Arthur, lord deputy of Ireland
- Gribben, Henry Derwent, 1917-2000
- Gribben, Thomas Joseph, 1882-1959
- Grierson, Constantia (née Crawley), c.1705-1732
- Grierson, George, 1680-1753
- Grierson, George Abraham (1851-1941),
- Grierson, Philip, 1910-2006
- Grierson family
- Grieve, Christopher Murray, 1892-1978
- Griffin, -, Fr., 1892-1920
- Griffin, Gerald, 1803-1840
- Griffin, James Thomas, 1929-2010
- Griffin, Larry
- Griffin, Michael, Fr., 1892-1920
- Griffin, Michael, Rev., d.1920
- Griffin, Michael Joseph, Fr, 1892–1920
- Griffin, Michael King-, 1909-81
- Griffin, Noel, 1926-1981
- Griffin, Thomas, 1829-1896
- Griffin, Victor
- Griffin, Victor, dean, 1924-
- Griffin family
- Griffith, Amyas, 1746-1801
- Griffith, Arthur, 1871-1922
- Griffith, Arthur, 1872-1922
- Griffith, Arthur 1871-1922
- Griffith, Arthur Hill, 1861-1946
- Griffith, Arthur Joseph, 1871-1922
- Griffith, Elizabeth, fl. 1746-1788
- Griffith, family
- Griffith, John Purser, 1848-1938
- Griffith, Margaret Catherine, 1911-2001
- Griffith, Richard, 1752-1820
- Griffith, Richard, fl. 1746-1788
- Griffith, Richard John, Sir, 1784-1878
- Griffith, Sir Richard John, 1784-1878
- Griffith family
- Griffith Maud, 1874-1963 ; Cosgrave, Louisa, 1882-1959 ; Uí Cheallaigh, Phyllis, 1895-1983 ; de Valera, Sinéad, 1878-1975 ; Childers, Rita, 1915-2010 ; Ó Dálaigh, Máirín. 1908-1994 ; Hillery, Maeve, 1924-2015 ; Robinson, Nicholas, 1946- ; McAleese, Martin, 1951-
- Griffiths, Ralph Alan, 1937-
- Griffiths, Ralph Alan, 1937- ; Henry VI, King, 1421-1471
- Grimley (Whelan), Ellen Jane (‘Nellie’), c.1887-1960,
- Grimley, Thomas, bishop, 1821-1871
- Grimm, Jacob Ludwig Karl, 1785-1863
- Grimm, Jacob Ludwig Karl, 1785-1863 ; Grimm, Wilhelm Karl, d. 1859 ; Herder, Johann Gottfried von, 1744-1803 ; Lessing, Gotthold Ephraim, d. 1781
- Grimm, Jacob Ludwig Karl, 1785-1863,
- Grimm, Wilhelm Karl, d. 1859
- Grimshaw, Beatrice (Ethel), 1870-1953
- Grimshaw, Beatrice Ethel, 1870–1953
- Grimshaw, James, 1798–1857
- Grimstone, Thomas, d.1922
- Grindle, W.H., 1935-
- Groarke family (of Co. Meath)
- Groden, Johnny, d.2014
- Grogan, Cornelius, c.1738-1798
- Grogan, John Knox, fl. 1811-1813
- Grogan, Larry, 1701-
- Grogan, Larry, fl. 1728
- Grogan, Nathaniel c.1740-1808
- Grogan family
- Grosart, A.B. (Alexander Balloch), 1827-1899
- Grose, Daniel, c.1766-1838
- Grose, Francis, 1731-1791
- Grose, Francis, 1731?-1791
- Grosjean, Paul, Revd,1900-1964
- Grosjean, R. P. Paul, 1900-1964
- Gross, William, Rev., fl. 1875
- Gross, William, Revd, fl. 1875
- Grosvenor, Beatrice, Elizabeth Katherine, 1915-1985
- Grosvenor, Hugh Richard Arthur, 2nd duke of Westminster, 1879-1953
- Grove, George, Sir, 1820-1900
- Grove White, James, 1852-1938
- Grubb, Howard, 1844-
- Grubb, Howard, d. 1931
- Grubb, Thomas, 1800-1878
- Grubb family
- Gruffudd, ap Cynan, King of Gwynedd, c. 1055-1137
- Gruffudd ap Cynan, -1137
- Gruffudd ap Cynan, king of Gwynedd, c.1055-1137
- Gruffudd ap Cynan, King of Gwynedd, c.1055-1137
- Gruffudd ap Llywelyn, king of the Welsh, d. 1063
- Grymes (Graham), Ambrose (Richard Thomas), fl.1685
- Guaire, King, d. 662
- Guaire Aidne mac Colmáin, d.663
- Guardi Brothers
- Guarás, Antonio de fl.1520-1579
- Gudelunas, William
- Guerin, Fitz W., fl. 1860-1900
- Guerin, Thomas, 1818-1887
- Guerin, Thomas, 1886-1963
- Guerin, Veronica, 1958-1996
- Guerin, Veronica, d. 1966
- Guest, Ivor, Churchill, Lord Wimborne 1873-1939
- Guest, Ivor Churchill, 1st Viscount Wimborne, 1873-1939
- Guevara, 'Che', 1928-1967
- Guevara, Che, 1928-1967
- Guibertus, abbot of Nogent, d. 1124
- Guigner, Saint, d. c.460
- Guilbaud, Patrick
- Guilford, Frederick North, 2nd earl of, 1732-1792
- Guillaume IX of Aquitaine, 1086-1127
- Guinam, Joseph
- Guinan, Joseph, Canon, 1863-1932
- Guinan, William Lee, 1896-1955
- Guiney, Denis, 1893-1967
- Guiney, Louise Imogen, fl. 1897
- Guiney, Patrick, 1862-1913
- Guiney, Patrick Robert, 1835-1877
- Guinigi, Nicolao, c.1370-1435
- Guinness, (Arthur Francis) Benjamin, 3rd earl of Iveagh, 1937–1992
- Guinness, Arthur, 1725-1803
- Guinness, Arthur, 1768-1855
- Guinness, Arthur, Sir, fl. 1882
- Guinness, Arthur Edward, Baron Ardilaun, 1840–1915
- Guinness, Arthur Francis Benjamin, 3rd Earl of Iveagh, 1937-1992
- Guinness, Arthur Lee, 1797-1863
- Guinness, Benjamin Lee,1st baronet, 1798–1868
- Guinness, Benjamin Lee,1st baronet, 1798–1868,
- Guinness, Desmond, Hon., c.1932-2020
- Guinness, Edward Cecil, 1st earl of Iveagh, 1847-1927
- Guinness, Edward Cecil, 1847-1927
- Guinness, Henry, d.1893
- Guinness, Henry Grattan, 1835-1910
- Guinness, Mariga, 1932-1989
- Guinness, Richard Seymour, fl. 1833-1841
- Guinness, Selina
- Guinness family
- Guion, Guillaume, c.1671-1740
- Guiscardi, Guglielmo, d. 1885
- Gulley, Harold E.
- Gumbleton, William Edward, 1840-1911
- Gumbleton, William Edward, fl.1850-1910
- Gun, Hugh Murray, fl. 1833
- Gun, William Townsend
- Gunn, Marion, d.2016
- Gunning, Margaret, d.1832
- Gunning, Maria, afterwards countess of Coventry, 1732-1760
- Gunson, James Henry, fl. 1922
- Gunson, John, 1825-1884
- Guo Moruo, 1892-1978
- Gurly family
- Gutenberg, Johann, 1397?-1468
- Gutherie, Tyrone, 1900-1971
- Guthrie, (William) Tyrone, 1900–1971
- Guthrie, Samuel, d.1965
- Gutman, Herbert George, 1928-
- Guttierrez, Uladislao, Fr, d.1848
- Guy, of Warwick, fl. c. 930
- Gwenllian, princess of Gwynedd and Dyfed, d. 1136
- Gwyn, John, 1755-1829
- Gwyn, Richard, 1537-1584
- Gwynn, Aubrey, Fr. 1892–1983
- Gwynn, Aubrey, S.J., 1892-1983
- Gwynn, Denis Roleston, 1893–1973
- Gwynn, Edward John
- Gwynn, John, 1713-1786
- Gwynn, John, SJ
- Gwynn, Robert Malcolm, 1877-1962
- Gwynn, Stephen
- Gwynn, Stephen Lucius, 1864-1950
- Gwynne, Howell Arthur, 1865-1950
- Gwyther, Cecil Wilberforce, 1867-1931
- Gyles, Charles, 1898-1922
- Gyles, Margaret Alethea, 1868-1949
- Gyles, Ross, fl.1745-1795
- Gálldubh, Teabóid, c.1589-1647
- Gógan, Liam Seosamh, 1891–1979
- Görtz, Hermann, see Goertz, Hermann, 1890-1947
- Gúaire
- Habsburg, house of
- Hacket family
- Hackett, Bernard, bishop, 1863-1932
- Hackett, Eric, 1895-1916
- Hackett, Francis
- Hackett, Francis, 1883-1962
- Hackett, Francis, 1883–1962
- Hackett, Helen, fl.1924-1934
- Hackett, John, Sir, d. 1534
- Hackett, Learö Aylmer Henry, 1884-1918
- Hackett, Rosanna 'Rosie', 1893-1976
- Hackett, Rosanna ('Rosie'), 1893-1976
- Hackett, Rosanna, ('Rosie'), 1893-1976
- Hackett, Venice, 1887-1918
- Hackett, William, 1878-1954
- Hackett, William, S.J., 1878-1954
- Hackett family
- Hackney, George
- Hadden, George, 1882-1973
- Hadden, William Edward, 1858-1949
- Hadden family
- Haddock, Marsden, 1790-1830
- Haden, Patrick, d. 1851
- Hadsor, John, c.1585-c.1657
- Hadsor, John, fl.1446-1468
- Hadsor, Richard, 1570-1635
- Hagan, James, fl. 1825-1842
- Hagan, John, 1873-1930
- Hagan, John, 1881-1906
- Hagan, John, Monsignor
- Hagan, John, monsignor
- Hager, Michael E.
- Haggerty, James, 1816-1861
- Hague, William, 1836-1899
- Hahn-Hahn, Ida von
- Haicéad, Pádragín, c.1600-1654
- Haicéad, Pádraigín, c.1600-1654
- Haig family
- Hailbronner, Karl von
- Haile Selassie I, (Tafari Makonnen), emperor of Ethiopia,1892-1975
- Haines, Charles, 1752-1831
- Haines, Charles Thomas, 1818-1878
- Halappanavar, Savita
- Haldimand, Sophia, 1788-1861
- Hale, Edward Everett, 1822-1909
- Hales, Donal, 1894-1969
- Hales, Dónal, fl.1914-1922
- Hales, Francis, 1822-1900
- Hales, Seán, 1880–1922
- Hales, Seán, 1881-1922
- Hales, Stephen, 1677-1761
- Hales, Tom (Thomas), 1892–1966
- Haley, Gene Clifford, 1933-2014
- Haley, Margaret, 1861-1939
- Halfpenny, William, d.1755
- Haliday, Alexander Henry, 1806-1870
- Haliday, Charles, 1789-1866
- Haliday, William
- Haliday, William, 1788-1812
- Halkett, Elisabeth-Charlotte
- Hall, Anna Maria Fielding
- Hall, C. S.
- Hall, David Henry, d. 1940
- Hall, Ellen (née Bindon), c.1830-post 1911
- Hall, Helen Ross, fl. 1900-1910
- Hall, Jeremiah, fl. 1689
- Hall, John, of Trinity College Dublin, fl. 1734
- Hall, Joseph, c.1819-1906
- Hall, Kevin P., d.2014
- Hall, Patrick
- Hall, Robert, fl. 1775-1835
- Hall, S.C., Mrs., 1800-1881
- Hall, Spencer Timothy, 1812-1885
- Hallaran, William Saunders, 1765-c.1810
- Hallaran, William Saunders, c.1765-1825
- Hallatt, Lilias Ashworth, 1844-1922
- Hallinan, Dan, fl.1921-1930s
- Hallinan, Denis, bishop, 1849-1923
- Hallinan, Ruth, 1901-1987
- Hallinan family
- Halloran, Laurence Hynes, 1765-1831
- Halpin (Halpine), Charles Graham, 1829-1868
- Halpin, George, 1779-1854
- Halpin, Henry Ross, 1854-1930
- Halpin, John, Rev.
- Halpin, John, Revd.
- Halpin, John Ralph, 1899-1970
- Halpin, Paddy, 1905-2000
- Halpin, Robert Charles, 1836-1894
- Halpin, Robert Charles, 1836–1894
- Halpin family
- Halton, Edward, Revd., fl. 1600
- Haly, Robert, d. 1882
- Halévy, Élie, 1870-1937
- Halévy, Élie, 1870-1937; Victoria, Queen United Kingdom of Great Britain and Ireland, 1819-1901
- Ham, William Arthur, 1892-1915
- Hamby family
- Hamel, Anton Gerardus van, 1886-1945
- Hamell, Patrick J., d. c.1996
- Hamett, John, d. c.1751
- Hamill, Patrick, 1887-1915
- Hamill family
- Hamilton, Alexander, c.1757-1804
- Hamilton, Alexander, fl. 1719-1759
- Hamilton, Alexander, MP
- Hamilton, Anthony, 1645-1720
- Hamilton, Archibald, bishop, 1580?-1659
- Hamilton, F. B., fl. 1827
- Hamilton, Frederick, Sir
- Hamilton, Frederick, Sir, 1590-1647
- Hamilton, Frederick, Sir, d. 1647
- Hamilton, George, baron of the exchequer, fl.1757-1793
- Hamilton, Hugh Douglas, 1734?-1806
- Hamilton, Hugh Douglas, 1740-1808
- Hamilton, Hugh Douglas, 1740–1808
- Hamilton, Hugo
- Hamilton, Hugo, ?1953-
- Hamilton, James
- Hamilton, James, 2nd duke of Abercorn and MP, 1838-1913
- Hamilton, James, 2nd marquess of Abercorn, 1811-1885
- Hamilton, James, 3rd marquis and 1st duke of Hamilton, 1606-1649
- Hamilton, James, 8th earl of Abercorn, d. 1789
- Hamilton, James, Earl of Clanbrassill, c.1691-1758
- Hamilton, John, 1800-1862
- Hamilton, John, d. 1884
- Hamilton, John, f.1791-1807
- Hamilton, John James, 1st marquess of Abercorn, 1756-1818
- Hamilton, Malcolm, d. 1629
- Hamilton, Mary
- Hamilton, Maurice William Chetwode, Major, fl. 1968
- Hamilton, Patrick, Rev., c.1685-1750
- Hamilton, Phyllis, 1950-
- Hamilton, Rev. George, d.1833
- Hamilton, Richard, 1922-2011
- Hamilton, Roy, 1938-2003
- Hamilton, Roy, 1943-
- Hamilton, Sir Frederick, c.1590–1647
- Hamilton, Tom, c.1940-2018
- Hamilton, Walter R. P., d. 1879
- Hamilton, William, c.1783-1856
- Hamilton, William, d.1859
- Hamilton, William, d. 1886
- Hamilton, William, Revd 1755-1797
- Hamilton, William Edwin, 1834-1902
- Hamilton, William Gerard, 1729-1796
- Hamilton, William Henry, d. 1825
- Hamilton, William Rowan, 1783-1834
- Hamilton, William Rowan, 1805 – 1865
- Hamilton, William Rowan, 1805-1865
- Hamilton, William Rowan, 1805-1865
- Hamilton, William Rowan, Sir, 1805-1865
- Hamilton-Temple-Blackwood, Frederick, 1st Marquess of Dufferin and Ava 1826-1902
- Hamilton-Temple-Blackwood, Frederick Temple, 1826-1902
- Hamilton family
- Hamilton family (of Brown Hall [County Donegal])
- Hamilton family (of Hampton Hall, Balbriggan, County Dublin)
- Hamilton family, earls of Abercorn
- Hamlin, Ann
- Hamlin, Ann, 1940-2003
- Hamlin, Elizabeth, 1940-2003
- Hamm, Cissie
- Hammarsfold, Das, 1905-1961
- Hammer, Victor, typographer
- Hammett, James
- Hammett, William, d. 1803
- Hammond, David, 1928-2008
- Hammond, John Lawrence Le Breton, 1872-1949
- Hampshire, Thomas Curtis, fl. 1775
- Hampson, Walter, 1864/66-1932
- Hampton, Christopher, c.1551-1625
- Hampton, Robert John, c.1821-1855
- Hanafin, Maureen, 1941-2023
- Hanan family
- Hanbidge, William, 1813-1909
- Hanbidge, William, c.1813-
- Hancock, John, jnr, 1762-1823
- Hancock, William Neilson, 1820-1888
- Hand, -, Fr., 1807-1846
- Hand, Edward (1744-1802)
- Hand, Geoffrey Joseph, 1931-2016
- Hand, James, 1847-1876
- Hand, John, Revd, 1807-1846
- Hand, Thomas, 1878-1920
- Handcock family
- Handel, George Frederick, 1685-1759
- Handel, George Frideric, 1685-1759
- Hand family
- Handlon, William, fl. 1864
- Hanlan, Maurice, fl. 1500-1520
- Hanley, Eddie, b.c.1967
- Hanley, Ellen, 1803-1819
- Hanley, Ellie, d.1819
- Hanley, Ellie, the ‘Colleen bawn’, 1803–1819
- Hanley, James, b. 1965
- Hanley, John, 1908-
- Hanlon, Bryan, fl. 1853
- Hanlon, Jack P, 1913-1968
- Hanlon, William, 1891-1927
- Hanna, Davoren, 1975-
- Hanna, Henry, 1871-1946
- Hanna, Henry, d. 1946
- Hanna, Hugh
- Hanna, Hugh, 1821-1892
- Hanna, Hugh, c.1821-1892
- Hanna, James, Rev, fl. 1700
- Hanna, James, Revd, fl. 1700
- Hanna, Julius
- Hanna, Robert, 1762-1797
- Hanna family
- Hannan, Michael, 1878-1928
- Hannan, Michael J., Fr b.1878
- Hannan, Paddy, 1843-1925
- Hannay, James (Seumas) Frederick Wynne, 1906-1984
- Hannay, James Owen, 1865-1950
- Hannay, James Owen, 1865-1950
Birmingham, George A. (pseud.) see Hannay, James Owen, 1865-1950
- Hannay, James Owen, 1962-
- Hannay, James Robert, 1935-2004
- Hannay, Robert, 1890-1964
- Hannon, Denny, fl.1950-1963
- Hannon, Gordon, 1891-1977
- Hannon, Ian, fl. 2003
- Hannon, Patrick, 1896-1960
- Hannon, Tommy, -1977
- Hanrahan, Patrick Reilly (PR), 1815-1892
- Hanran, Patrick Francis, d. 1916
- Hanratty, John, fl. 1916-1934
- Hapaska, Siobhán, b. 1963
- Harald I, king of Norway, c.860-c.940
- Haraldsson, Óláfr, saint
- Haraldsson family
- Harbinson, Robert, 1928-
- Harcourt, Simon, 1603-1642
- Hardcastle, Charles, d. c.1848
- Hardebeck, Carl Gilbert, 1869-1945
- Hardebeck, Carl Gilbert, d. 1945
- Harden, Henry, 1713/14-1788
- Harden, John, 1772-1847
- Harden family
- Hardie, James Keir, 1856-1915
- Hardiman, James, 1782-1855
- Hardiman, John d. 1799
- Hardiman, Maureen, b.1916
- Harding, John, fl. 1718-1725
- Hardinge, Henry, first Viscount Hardinge of Lahore, 1785-1856
- Hardinge, Henry, Sir
- Harding family
- Hardman, Edward, d.1779
- Hardman, Edward Chambré, 1898-1988
- Hardman, John, 1811-1867
- Hardy, Bert, 1913-1995
- Hardy, Eleanor Mary, 1911-1977
- Hardy, Thomas, 1840-1928
- Hardy family
- Hare, Augustus John Cuthbert, 1834-1903
- Hare, Patrick, 1731-1816
- Hare, Richard, c. 1719-1794
- Hare, William, 1792x1804-1829
- Hare, William, fl. 1792–1829
- Hare, William Francis, 5th Earl of Listowel, 1906-1997
- Hare family, Barons of Coleraine, fl. 1606-1824
- Hare family, Earls of Listowel, fl. 1700-1800
- Harford, Kathleen, b. 1906
- Hargan, James, fl. 1853
- Hargrave, Abraham, 1755-1808
- Hargrave, Joshua Harrison, c.1860-1924
- Hargroves, Thomas, 1886-1918
- Harington (also spelled Harrington), Sir John, 1560-1612
- Harington, John, Sir, bap. 1560, d. 1612
- Harison, George 1719-1773
- Harkin, Brendan, d. 1995
- Harkin, Michael, 1830-1898
- Harkin, William, 1855-1906
- Harley, John, d. 1834
- Harley, Mary (Mae), d.1921
- Harley, Robert, 1st earl of Oxford, 1661-1724
- Harley, Robert, 1st earl of Oxford, 1661–1724
- Harling, Sean
- Harlow, James, fl. 1689-1692
- Harlow family
- Harman family
- Harmsworth, Alfred Charles William, 1865-1922
- Harnett, Cornelius (1723-1781)
- Harnett, William, 1848-1892
- Harnett family
- Harney family
- Harold, Edmund, baron, d. 1808
- Harold, Francis, d.1685
- Harold, Francis, OFM ; Papebroch, Daniel, S.J.
- Harold, James, 1744-1830
- Harold, Owen, fl.1913-1916
- Harold-Barry family
- Harold II Godwineson, King, 1022-1066
- Harold II Godwineson, king, 1022x3?-1066
- Harp, Ephraim, fl. 1810
- Harper, Charles, b. 1943
- Harper, Dympna, 1940-2018
- Harper, Fred, b.1899
- Harper family
- Harpur, Paddy, 1913-
- Harpur, Thomas, 1768-
- Harpur, William, d. 1960
- Harrigan (née Kennedy), Margaret, d.1959
- Harrigan, Margaret, 1918-
- Harrigan, Patrick, d.1961
- Harrigan family
- Harrington, Edward (Ned), 1852-1902
- Harrington, Edward, c.1852–1902
- Harrington, Edward, fl. 1900
- Harrington, Joe
- Harrington, John, Sir, 1561-1612,
- Harrington, Michael, fl. 1876
- Harrington, Niall C., 1901-1981
- Harrington, Tim, 1851-1910
- Harrington, Timothy Richard (1866–1937)
- Harriot, Thomas, 1560-1621
- Harriot, Thomas, 1560?-1621
- Harriot, Thomas, c.1560-1621
- Harris, Emily Kate, b. 1889
- Harris, Frank, 1855-1931
- Harris, Hanry Bradshaw, 1830-1914
- Harris, James, Frank, 1856-1931
- Harris, John, 1754-1838
- Harris, John Nugent, 1862-1953
- Harris, Joseph, d. 1772
- Harris, Margaret (née Beirne), 1916-1997
- Harris, Mary, 1938-2021
- Harris, Matthew, 1825-1890
- Harris, Matthew, 1825–90
- Harris, Patrick Joseph, 1942-1942
- Harris, Richard, 1930-2002
- Harris, Simon, 1986-
- Harris, Thomas, fl.1930-1942
- Harris, Walter, 1686-1761
- Harris, Walter, 1686-1762
- Harris, Walter, 1686–1761
- Harris family
- Harrison, Alan, 1943-
- Harrison, Alastair
- Harrison, Alexander, fl.1834-1851
- Harrison, Francis Llewelyn, 1905-1987
- Harrison, Henry, 1867–1954
- Harrison, Hubert Henry, 1883-1927
- Harrison, J. J., 1815-1890
- Harrison, John, 1693-1776
- Harrison, John, c.1867-1921
- Harrison, Samuel, 1883-1958
- Harrison, Sarah Cecilia (‘Celia’), 1863-1941
- Harrison, Sarah Cecilia, 1863-1941
- Harrison, Sarah Cecilia, 1863-1941,
- Harrison, Thomas, c.1809-1846
- Harrison, Thomas, surgeon, 1807?-1846
- Harrison, William, 1534-1593
- Harrison family
- Harrod, John, c.1850-1908
- Harron, Maurice, b. 1946
- Harshaw, James, 1797-1867
- Hart, -, natural historian, fl. 1849-1914
- Hart, Alice, 1848-1931
- Hart, Andrew Searle, Sir, 1811-1890
- Hart, Charles, 1824-1898
- Hart, Ernest Abraham, 1835-1898
- Hart, George Vaughan, 1752-1832
- Hart, Henry Chichester, 1847-1908
- Hart, John George Vaughan, 1879-1946
- Hart, Peter
- Hart, Peter, 1963-
- Hart, Peter, 1963-2010
- Hart, Robert, Sir, 1835-1911
- Hart-Synnot, Arthur Henry Seton, 1870-1942
- Harte (née O'Donovan), Nuala, d.2005
- Harte, Bartholomew, 1902-1972
- Harte, Charles, d. 1898
- Harte, Frank, 1913?-2009?
- Harte, Frank, 1933-2005
- Harte, Jack, 1920-
- Harte, Mariah, 1855-1887
- Harte, Mary, née Stanley, 1818-1899
- Harte, Paddy
- Harte, Reginald Clare, Sir, 1848-1931
- Harte, Richard, Sir, fl. 1806-10
- Harte, Ted, 1924-2012
- Harte family
- Harten, Thomas, c.1883-1914
- Hartigan, Edward, 1895-1917
- Hartigan, Jeremiah, SJ
- Hartigan, Luke, 1893-1917
- Hartland, William Baylor, 1836-1912
- Hartland family
- Hartley, John Jerome, 1886-1959
- Hartley, May Laffan, 1849-1916
- Hartlib, Samuel, 1600-1662 ; Bacon, Francis, 1st Viscount St Albans, 1561-1626
- Hartlib, Samuel, d. 1662
- Hartmann, Hans, 1909-2000
- Hartmann, Moritz, 1821-1872
- Hartmann von Aue, c. 1160 - c. 1220
- Hartnett, Michael, 1941-1999
- Hartnett, Michael, 1941–1999
- Hartnett, Sean, b. 1975
- Hartnett family
- Hartney, Mary, d.1922
- Hartog, Marcus M., fl. 1921
- Hartog, Maurice, c.1849-1924
- Hartpole, Robert, 1524-1594
- Hartpole,Robert, c.1514-1594
- Hartpole, Sir Robert, ? - 1594
- Hartrick family
- Hartry, Malachy
- Harty, Edward (Ned), fl. 1919-1952
- Harty, Herbert Hamilton, Sir, 1879-1941
- Harty, John, Archbishop, 1867-1946
- Harty, Oliver, fl. 1800
- Harty, Sir (Herbert) Hamilton, 1879-1941
- Harty, Spencer, 1838/39-1922
- Hartys family
- Harvey, (Beauchamp) Bagenal (1754–1798)
- Harvey, Bagenal, 1762-1798
- Harvey, Beauchamp Bagenal, 1754?–1798
- Harvey, Frederick Maurice Watson, 1888-1980
- Harvey, Gabriel, 1552x3-1631
- Harvey, Henry, fl.1599
- Harvey, James, fl. 1847
- Harvey, James, fl.1946
- Harvey, Moses, 1820-1901
- Harvey, Moses, 1820-1904
- Harvey, Percy
- Harvey, Reuben, 1734-1808
- Harvey, Robert, 1889-1967
- Harvey, Robert P.
- Harvey, Thomas Harcourt, 1920-1941
- Harvey, William, 1682-1765
- Harvey, William Henry, 1811-1866
- Harvey, William Marsh, d.1919
- Harvey family
- Harvie, Ralph A.
- Haselbeck, Franziscus Sebastian, 1885-1973
- Haskin, Robert C., c.1885 -?
- Haslam, Anna Maria, 1829-1922
- Haslam, Anna Maria, d. 1922
- Haslam, Anna Maria, d. 1922 ; Day, Susanne Rouviere ; MacSwiney, Mary ; Sutton, Anne ; Dowdall, Jenny ; Aherne, Chrissie ; Clune, Deirdre ; Clancy Catherine ; Shields, Mary ; Forde, Deirdre ; Doherty, Ann ; O'Sullivan, Valerie
- Haslam, Peter, 1876-1949
- Haslam, Thomas Joseph, 1825-1917
- Haslam, Thomas Joseph, d. 1917
- Haslet, John, d. 1777
- Haslett, Henry, d. 1806
- Haslett, John Short
- Hassan, John, d. 1939
- Hassan, John, Rev, 1875-1939
- Hassard, Jack, 1926-2004
- Hassett, Arthur Lindsay, 1913-1993
- Hassett, Patrick (Paddy), 1890-1916
- Hassett, Thomas Henry, 1841-1893
- Hassett family
- Hassler, William W.
- Hasson, George,
- Hasson, Mary Columba, Sr., 1910-1996
- Hasson, Patrick, 1899-1979
- Hasson, Seamus, 1923-2016
- Hasson, Seamus, 1924-
- Hastings, Elizabeth, Countess of Moira, 1731-1808
- Hastings, Francis Edward Rawdon-Hastings,1st Marquess of, 1754-1826
- Hastings, Francis Rawdon, first marquess of Hastings and second earl of Moira, 1754–1826
- Hastings, Michael, 1876-1972
- Hastings, Patrick Gardiner, Sir, 1880-1952
- Hastings, Warren, 1732-1818
- Hastings family
- Hatch, John, c.1720-1797
- Hatchell family
- Hatch family
- Haughery, Margaret (née Gaffney), 1813-1882
- Haughey, Anthony
- Haughey, Charles J.
- Haughey, Charles J., 1925-2006
- Haughey, Charles J., 1925-2006,
- Haughey, Charles James (C. J.), 1925-2006
- Haughey, Charles James (C.J.), 1925-2006
- Haughey, Charles James, 1925-2006
- Haughton, James
- Haughton, Samuel, 1821-1897
- Haughton, Samuel, 1821-1897,
- Haughton, Samuel, 1821–1897
- Haughton family
- Havel, Miroslav
- Haverfield, Francis John, 1860-1919
- Haverty, Joseph, 1794-1864
- Haverty, Joseph Patrick
- Haverty, Joseph Patrick, 1794-1864
- Haverty, Patrick Martin
- Havlik, Robert J.
- Hawkes (née Hopkins; other married name Priestley), (Jessie) Jacquetta, 1910-1996
- Hawkes, Christopher, 1905-1992
- Hawkes, William, 1905-1962
- Hawkesworth, Timothy, b. c. 1955
- Hawkins, John, fl.1720-1730
- Hawksett, Samuel, 1801-1859
- Hawthorn, John Michael (Mike), 1929-1959
- Hawthorne, Nathaniel, 1804-1864
- Hay, Edward, 1761?-1826
- Hay, Edward, 1761?–1826
- Hay, Edward, c.1761-1826
- Hay, George, Bishop, 1729-1780
- Hay, Helen Selina, countess of Gifford, 1807-1867
- Hay, James, 1st earl of Carlisle, d. 1636
- Hay, Mountiford John, fl. 1790-1829
- Hay, Philip, 1773?-1856
- Hay, Robert, fl. 1820
- Haycock, Nan (née Bates), b.1915
- Hayden, Jago, 1937-
- Hayden, John, OFM (Fr Augustine), 1870-1954
- Hayden, John J., fl. 1878
- Hayden, John Patrick, 1863-1954
- Hayden, Mary, 1862-1942
- Hayden, Mary Teresa, 1862-1942
- Hayden, Mary Teresa, 1862-1942 ; Pearse, Patrick Henry, 1879-1916
- Hayden, Mary Teresa, 1862–1942
- Hayden, Patrick, 1774-1851
- Hayden, Thomas, 1883-?
- Hayden, William, bishop, 1868-1936
- Hayden family
- Hayes (Ó Ríordáin), (Mary) Gabriel, 1909-78,
- Hayes, Catherine, 1825-1861
- Hayes, Dan, 1733-1767
- Hayes, Denis, 1915-2012
- Hayes, Edwin, 1819-1904
- Hayes, Gabriel (1909-1978) : Ó Riordáin, Seán P. (1905-1957)
- Hayes, Henry Browne, Sir, 1761-1832
- Hayes, James V., 1918-1999
- Hayes, Joanne, 1959-
- Hayes, John
- Hayes, John, 1887-1957
- Hayes, John, Revd, 1887-1957
- Hayes, John D.
- Hayes, Johnny (John Joseph), 1886-1965
- Hayes, Marie Elizabeth, 1874-1908
- Hayes, Maurice, 1927-
- Hayes, Maurice, 1927-2017
- Hayes, Michael, 1767-1825
- Hayes, Michael, fl. 1798-1825
- Hayes, Michael, fl.1850-1862
- Hayes, Michael Angelo, 1820-1877
- Hayes, Michael Angelo, d. 1877
- Hayes, Patrick, 1854-1940
- Hayes, Richard Francis, 1882-1958
- Hayes, Richard Francis, 1882-1958 ; Hayes, Richard James, 1902-1976
- Hayes, Richard J.
- Hayes, Richard James, 1902-1976
- Hayes, Richard Joachim, O.F.M., fl. 1823
- Hayes, Richard Joachim, OFM, fl. 1823
- Hayes, Samuel, ca. 1743-1795
- Hayes, Samuel, fl. 1794
- Hayes, Sean, 1942-2011
- Hayes, Séan, T.D., 1886-1928
- Hayes, Thomas, 1820-1868
- Hayes, Thomas, 1866-1935
- Hayes, William J., 1930-2023 ; Kennedy, Máirín
- Hayes-McCoy, G. A., 1911-1975
- Hayes family
- Hayman, Samuel, 1818–86
- Hays, Henry, fl 1729
- Hayter, John, 1800-1895
- Hayton, D. W. (David William)
- Hayward, Richard, 1892-1964
- Hayward-Young, Walter, 1869-1920
- Hazlitt, William, 1778-1830
- Heal, Henry, 1920-1986
- Heald, Weldon F.
- Healey, Thomas Henry, 1859-1928
- Healy, (Patrick) Angelus, O.F.M. Cap.,1875-1953
- Healy, Ann, 1917-1995
- Healy, Cahir
- Healy, Cahir, 1877-1970
- Healy, Cahir, 1877-1970,
- Healy, Dermot, b.1947?
- Healy, John, 1858-1938
- Healy, John, 1930-1991
- Healy, John, archbishop of Tuam, 1841-1918
- Healy, John, bishop, 1841-1918
- Healy, John Edward, 1872-1934
- Healy, Mary, 1885-
- Healy, Mary, 1912-
- Healy, Mary Buckley
- Healy, Michael, 1873-1941
- Healy, Michael Joseph, 1873-1941
- Healy, Michael Morris, 1796-1850
- Healy, Noel, d.2021
- Healy, Paddy, 1916-2000
- Healy, Patrick, 1891-1923
- Healy, Patrick Joseph, 1840-1905
- Healy, Patrick Thomas, 1916-2000
- Healy, Richard, 1894-1982
- Healy, Richard J.
- Healy, Robert, 1796-1882
- Healy, Shay, 1943-
- Healy, Timothy Michael (1855–1931)
- Healy, Timothy Michael, 1855-1931
- Healy, Timothy Michael, 1855-1931,
- Healy, Willie, 1932-
- Healy-Rae, Jackie, fl. 2004
- Healy family
- Heaney, Joe, 1919-1984
- Heaney, John, fl.1889
- Heaney, Seamus, 1939-
- Heaney, Seamus, 1939-2013
- Heaney family
- Heard, John Isaac, fl.1845
- Heard, Stawell St Ledger, 1942-2015
- Hearn (Hearne), George, d.1853
- Hearn, Lafcadio, 1850-1904
- Hearn, Patrick Lafcadio (Koizumi Yakumo), 1850–1904
- Hearn, W. E. (William Edward), 1826-1888
- Hearn, William, 1826-1888
- Hearn, William Edward, 1826-1888
- Hearne, John, 1893-1969
- Hearne, John Joseph, 1893-1969
- Hearnshaw, Fossey John Cobb, 1869-1946
- Hearst, William Randolph, d.1951
- Hearst family
- Heath, Edward Richard George, Sir, 1916-2005
- Heath, Lady, Sophie Peirce (Eliott-Lynn), 1896-1939
- Heath, Robert, d. 1800
- Heath, Sophie Catherine Theresa Mary, Lady, 1896-1939
- Heatley, Charles, c.1895-1916
- Heaton, Herbert, 1890-
- Heaton family
- Heavey, Aidan
- Heavey, Margaret, 1908-1980
- Hecataeus of Miletus
- Hector
- Hederman, Anthony
- Heely, John (1759–1831)
- Heeney, Cornelius, 1754-1848
- Heeney, Patrick, 1881–1911
- Heeney, Patrick, fl. 1907
- Heffernan, James Edward, 1896-post-1966
- Heffernan, John T., 1850-1907
- Heffernan, Michael
- Heffernan, Tony
- Heffernan family
- Hegarty, Daniel, fl.1913-1916
- Hegarty, Denis Alexander, 1907-1996
- Hegarty, Jeremiah, 1892-1958
- Hegarty, Jimmy, fl.c.1899-1960
- Hegarty, Maureen, 1921-2016
- Heider, (Friedrich Wilhelm) Ernst (Karl), 1876-1961
- Heist, William W.
- Heitler, Walter Heinrich, 1904-1981
- Helena, Princess [married name Princess Christian of Schleswig-Holstein], 1846–1923
- Helfferich, Adolf
- Hellwig, David J.
- Helps, Arthur, Sir, 1813-1875
- Helsham, Richard, 1683-1738
- Helsham, Richard, 1683-1738,
- Helsham family
- Helsinga, M. H.
- Heltzel, Rudolf, 1941-2020
- Heltzel, Rudolf, b. 1940
- Hely-Hutchinson, Coote Robert, 1870-1930
- Hely-Hutchinson, John, d. 1794
- Hely-Hutchinson, Richard George, 1871-1953
- Hely-Hutchinson, Richard John, 4th Earl of Donoughmore, 1823-1866
- Hely-Hutchinson family
- Hemans, George Willoughby, 1814-1885
- Hempel, Eduard, 1887-1972
- Hempel, Eduard, 1887–1972
- Hempel, Eduard, fl. 1937-1945
- Hempel family
- Hempenstall, Arthur, 1766-1800
- Hempenstall, Jimmy, 1930-2002
- Hempenstall, Jimmy, c.1930-c.2002
- Hemphill, Charles Hare, 1st baron Hemphill, d. 1908
- Hemphill, Kenneth, c.1936-2017
- Hemphill, Samuel, fl. 1744
- Hemphill, William Despard, 1816-1902
- Hempson, Denis, 1695-1807
- Hempstead, Frank, 1918-
- Henchy, Seamus, 1917-2009
- Hencken, Hugh O'Neill, 1902-1981
- Hendershot, Carol
- Henderson, (Robert) Brumwell ('Brum'), 1929-2005
- Henderson, Benjamin, fl. 1875
- Henderson, Brian, b. 1950
- Henderson, Frank, 1886-1959
- Henderson, Hamish Scott, 1919-2002
- Hendricks, David, 1924-1983
- Hendricks, Thomas, 1815-1851
- Henebry, Richard (de Hindeberg, Risteard), 1863-1916
- Henebry, Richard, 1863-1916
- Henegan, Pat A., c.1850-
- Hengham, Ralph de, d. 1311
- Hengham, Sir Ralph (de), C.J. (c1240-1311)
- Henley, William Ernest, 1849-1903
- Henn, Thomas Rice, 1849–1880
- Henn, William, 1814-1901
- Hennessey, Graham Harold, 1923-2012
- Hennessey family
- Hennessy, Denis, 1870-1947
- Hennessy, Edward Swan, 1866-1929
- Hennessy, John, Archbishop, 1825-1900
- Hennessy, John, fl. 1731
- Hennessy, John Pope, 1834–1891
- Hennessy, John Pope, Sir, 1834-1891
- Hennessy, Patrick, d.1923
- Hennessy, Patrick Joseph, Fr., 1872-1941
- Hennessy, William John, 1839-1917
- Hennessy, William Maunsell, 1828-1889
- Hennessy family
- Hennig, John, d. 1986
- Hennig, Paul Gottfried Johannes (John), 1911–86
- Hennigan, John
- Hennings family
- Henry, Alice Helen (Elsie) (née Brunton), 1881-1956
- Henry, Augustine (1857–1930)
- Henry, Augustine, 1857-1930
- Henry, Augustine, 1857-1930
- Henry, baron Barry of Santry, d. 1751
- Henry, Denis, d. 1925
- Henry, Denis, Sir, 1864-1925
- Henry, Denis Stanislaus
- Henry, Elsie
- Henry, Elsie, 1881-1956
- Henry, Françoise, 1902-1982
- Henry, James, 1798-1876
- Henry, James, d.1936
- Henry, Joseph, 1821-1885
- Henry, Joseph, 1822-1885
- Henry, Jospeh, 1822-1885
- Henry, Paul, 1876-1958
- Henry, Paul, 1877-1958
- Henry, Richard, Private
- Henry, Robert Mitchell, 1873-1950 ; Joyce, James Augustine, 1882-1941
- Henry, Sam, fl.1906-1952
- Henry, Samuel, 1878-1952
- Henry, Sir Denis Stanislaus, 1864-1925
- Henry, Thomas Gibson, 1834-1920; Henry, Charles James Campbell, fl.1854-1910; Henry, Joseph, 1839-1903
- Henry, William, Rev.
- Henry Augustine, 1857-1930
- Henry de Ferrers, d. 1378
- Henry family
- Henry family (of Galway)
- Henry fitz Gerald, c.1173-c.1231
- Henry I, king, 1068-1135
- Henry II, king, 1133-1189
- Henry II, king, 1133-1189 ; Roger of Howden ; Gervase of Canterbury ; Gerald of Wales
- Henry II, king, 1133-1189,
- Henry III, king, 1207-1272
- Henry III, king, 1207-1272,
- Henry II of England, 1133-1189
- Henry IV, king, 1367-1413
- Henry of London, bishop, d. 1228
- Henry of Saltrey, fl. 1150.
- Henry V, king, 1387-1422
- Henry VI, king, 1421-1471
- Henry VI, king, 1422-1471
- Henry VII, king, 1457-1509
- Henry VIII, 1491-1547
- Henry VIII, king, 1491-1547
- Henry VIII, king, 1491-1547,
- Henry VIII, King of England, 1491-1547
- Hepenstall, Edward, c.1766-c.1804
- Heraghty, Margaret (née McGrory), fl 1841-1847
- Herbert (Herzberg) family
- Herbert, Blanche Eleanor, fl.1848-1863
- Herbert, Dorothea, 1770-1829
- Herbert, Dorothea, c.1768-1829
- Herbert, Dorothea 1770-1829
- Herbert, Emily
- Herbert, family
- Herbert, Frances (Fanny), (née Lover, later Schmid), c.1834-1915/20
- Herbert, Henry Arthur
- Herbert, Henry Howard Molyneux, fourth earl of Carnarvon, 1831-1890
- Herbert, Lucy, Lady, 1669-1744
- Herbert, Mary, 1686-1775
- Herbert, Mary, 1817-1893
- Herbert, Mary, Lady, 1686-1775
- Herbert, Máire
- Herbert, Richard Townsend, fl. 1788
- Herbert, Robert 1938-1957
- Herbert, Sidney, 14th earl of Pembroke, 1853-1913
- Herbert, Victor, 1859-
- Herbert, Victor, 1859-1924
- Herbert, Victor August, 1859-1924
- Herbert, William, Sir, 1553-1593
- Herbert, William, Sir, d. 1593
- Herbert family
- Herbison, David, 1800-1880
- Herder, Johann Gottfried von, 1744-1803
- Herdman, Emerson Tennant, fl.1905-1916
- Herdmans, family
- Herema, Tiede, fl. 1975
- Hering, Johann Friedrich
- Heriot, George, 1759-1839
- Herity, Michael, 1929-2016
- Herlewin, O.Cist., bishop of Leighlin, d. c.1216/7
- Herlihy, Donal J., bishop, fl. 1981
- Herlihy, John, 1863-1941
- Herlihy, Nora, 1910-1988
- Herlihy, Nora, 1910–1988
- Hermon, John C., Sir, 1928-
- Hermon, Sir John Charles ('Jack'), 1928-2008
- Herodotus, c.484BC-424BC
- Heron, Anastatia, b.1909
- Heron, Archibald ('Archie'), 1895-1971
- Heron, Denis Caulfield, 1824-1881
- Heron, Denis Caulfield, d. 1881
- Heron, Hannah Anastasia, 1909-
- Heron, Isaac
- Heron, James J., b.1898
- Heron, John Joseph, 1891-1969
- Heron, Liam
- Heron, Sam, 1887-1937
- Herraugher, William Fitzjohn, fl.1561
- Herrema, Tiede, fl. 1975
- Herrick family
- Herschel, Caroline Lucretia (1750–1848
- Hertford family
- Hertz, Catherine
- Hertz, Heinrich, Rudolf, 1857-1894
- Hertz, Rudolf, 1897-1965
- Hertz Wandersleb, Caitríona, 1919-2002
- Hervey, Frederick Augustus, 4th earl of Bristol, bishop, 1730-1803
- Hervey family, eHervey, Frederick Augustus, 4th Earl of Bristol, Bishop, 1730-1803
- Herward, Mary 'Cissy' (née McCormack), b.1920
- Herzog, Chaim (‘Vivian’), 1918-1997
- Herzog, Isaac (Yitzak) Halevi, 1888-1959
- Heskin, Marie, d.1998
- Heslin, Michael F., fl. 1920-1921
- Hession, James W., 1917-
- Hession, Paul, b.1983
- Hester, Bartholomew, fl.1836-1880
- Hestor, John, 1909-
- Heueston, John, 1935-2012
- Heuser, Herman J.
- Heuston, Sean, 1891-1916
- Heuston, Seán (John J.), 1891-1916
- Heuston, Seán, 1891-1916
- Heverty, Joseph Patrick, 1794-1864
- Hevey, Paul
- Hewetson, Christopher, 1737-1798
- Hewetson, Michael, 1643-1724
- Hewetson, Michael, b.1643
- Hewetson, Patrick, 1699-1783
- Hewetson family
- Hewett, Thomas, Sir, 1656-1726
- Hewitt, James, 1st Viscount Lifford, 1715-1789
- Hewitt, James, 4th viscount Lifford
- Hewitt, John, 1907-1987
- Hewitt, John, 1907–1987
- Hewitt, John Harold, 1907-1987
- Hewitt, Thomas Robinson, 1887-1915
- Hewson, George, 1881-1977
- Hewson, John, appointed Lord Hewson under the protectorate, fl. 1630–1660
- Hewson, Michael, d.199?
- Hewson, Paul David, 1960-
- Hewson family
- Heyden family
- Heyland, Arthur, Rowley, 1781-1815
- Heyland, John, fl. 1785
- Heylyn, Peter, 1599-1662
- Hezlet, Arthur, Vice-Admiral Sir, 1914-2007
- Hibernicus, Thomas, c.1270-c.1340
- Hick, Charles Henry, 1899-1995
- Hick, Charles Henry, fl.1927-1995
- Hickey, Daniel, 1877-1956
- Hickey, Elizabeth, d. 1999
- Hickey, Ellen, Mother Mary Benedict, 1854-1941
- Hickey, Emily Henrietta, 1845–1924
- Hickey, James (Jim), 1914-1944
- Hickey, Leo William (alias Martin Doyle), fl. 1817-1867
- Hickey, Maurice, 1915-2005
- Hickey, Nora, 1937-2023
- Hickey, Theodosia, 1895-1956
- Hickey, Thomas, 1741-1824
- Hickey, Thomas, 1775-1855
- Hickey, Thomas 1741-1824
- Hickey, Timothy
- Hickey, William (alias Martin Doyle), 1787/8–1875
- Hickey, William, 1788-1875
- Hickey family
- Hickey y Pellizzoni, Margarita, 1728-
- Hickie, William Bernard, 1865-1950
- Hicks, Frederick George, 1870–1965
- Hicks, James Joseph,1837-1916
- Hicks, Jerry
- Hicks Beach, Michael Edward, 1st earl St Aldwyn, 1837-1916
- Hickson, Mary, 1825-1899
- Hickson, Mary Agnes, 1825-1899
- Higgins, Alexander Gordon "Alex", 1949-2010
- Higgins, Annie, -1935
- Higgins, Bryan, 1737?-1818?
- Higgins, Elizabeth O'Connor, 1857-1948
- Higgins, Francis, 1745-1802
- Higgins, Francis, d. 1802
- Higgins, Frederick Robert, 1896-1941
- Higgins, Henry Bournes, 1851-1929
- Higgins, John Jeremiah, 1852-1926
- Higgins, Joseph, 1885-1925
- HIggins, Leo, b. 1951
- Higgins, Margaret Lindsay, Lady, 1848-1915
- Higgins, Michael, 1867-1909
- Higgins, Michael D, 1941
- Higgins, Michael D, 1941-
- Higgins, Michael D, b.1941
- Higgins, Michael D.
- Higgins, Michael D., 1941-
- Higgins, Peter, b.c.1938
- Higgins, Peter, O.P., 1602?-1642
- Higgins, William, d.1825
- Higginson, H. W., 1873-1954
- Hignett, Daniel, fl.1659-1682
- Hilarius Hibernensis, fl. c-7
- Hilary of Poitiers. Hilarius Pictauiensis, c.315-c.364
- Hilda, Saint
- Hilda, Saint, 614-680
- Hilda Tweedy, 1911-2005
- Hildebrand family
- Hill, Arthur, 2nd marquess of Downshire, 1753-1801
- Hill, Arthur, 4th Marquis of Downshire, 1812-1868
- Hill, Arthur, 1846-1921
- Hill, Arthur Blundell Sandys Trumbull, 3rd Marquess of Downshire, 1788-1845
- Hill, Arthur Wills Blundell Sandys Trumbull Windsor, 4th Marquess of Downshire, d.1868
- Hill, Christopher, 1912-2003
- Hill, David
- Hill, Derek, 1916-2000
- Hill, Desmond, 1919-2009
- Hill, Edward, 1741-1830
- Hill, Edward, 1741–1830
- Hill, Elizabeth, c1860-1915
- Hill, George, Lord, 1801-1879
- Hill, George Augusta, 1801 – 1879
- Hill, Henry, 1806-1887
- Hill, Henry Houghton, 1882-1951
- Hill, Jacqueline R.
- Hill, James John, 1811-1882
- Hill, Paul, d. 1954
- Hill, Sarah, b. c 1822, d. 1914
- Hill, William, 1798-1844
- HIll, William Henry, 1867-1911
- Hill, Wills, 1st marquess of Downshire, 1718–93
- Hillas family
- Hillen, Seán, b.1961
- Hillery, Patrick
- Hillery, Patrick, 1923-2008
- Hill family
- Hill family, marquesses of Downshire
- Hilliard, Robert Martin, 1904-1937
- Hilliard, Robert Martin, fl. 1910-1930
- Hilliard, Stephen
- Hilliard family
- Hillman family
- Hime, Mauricew, fl.1887-1896
- Hinch, John de Witt, c.1875-1931
- Hincks, Edward, 1792-1866
- Hincks, Francis, Sir, 1807-1885
- Hincks, Thomas Dix, 1767-1857
- Hincks, Thomas Dix, 1767–1857
- Hinde, John Wilfrid, 1916-1997
- Hines, John L., Gen., 1868-1968
- Hingston, James, fl. 1774
- Hingston, Richard William George, 1887-1966
- Hinkson (née Tynan), Katharine, 1859–1931
- Hinton, James, 1822-1875
- Hinton family
- Hirst, Thomas Archer, 1830-1892
- Hishon, Daniel John, fl. 1882-1914
- Hitchcock, Alfred Joseph, Sir, 1899-1980
- Hitchcock, Francis Clere, c.1896-post-1937
- Hitchcock, Reginald Ingram Montgomery (‘Rex Ingram’),1893–1950
- Hitchcock, Richard, 1824-1856
- Hitler, Adolf, 1889-1945
- Hoade, Eugene, 1903-1972
- Hoade, Eugene, OFM, 1903-1972
- Hoade, John
- Hoadly, Benjamin, bishop, 1676-1761 : Hoadly, John, Archbishop, 1678-1746
- Hoare, Edward Newenham, 1802-1877
- Hoare, Joseph, bishop, 1842-1927
- Hoare, Richard Colt, Sir, 1758-1838
- Hoban, James, 1758-1831
- Hoban, James, c.1762-1831
- Hobart, Henry, Sir, fl. 1698
- Hobart, John, 2nd earl of Buckinghamshire, 1723-1793
- Hobbes, Thomas, 1588-1679
- Hobbes, Thomas, 1588-1679 ; Petty, William, Sir, 1623-1687 ; Vesey, John, archbishop, 1638-1716 ; Synge, Edward, bishop, 1691-1762
- Hobbs, Andrew, d.1916
- Hobbs, David, d.1916
- Hobbs, Robert, d.1916
- Hobhouse, John Cam
- Hobson, (John) Bulmer, 1883-1969
- Hobson, Bulmer
- Hobson, Bulmer, 1883-1969
- Hobson, Christopher Irwin, 1862-1921
- Hobson family
- Hoccleve, Thomas, c.1369-c.1426
- Hoche, Lazare, General, 1768-1797
- Hoche, Lazare, General, 1768-1797 ; Hussey, Thomas, Bishop of Waterford and Lismore, 1746-1803 ; Moylan, Francis, Bishop of Cork, 1735-1815 ; Tone, Theobald Wolfe, 1763-1798
- Hoctor, D.B., Brother, fl. 1905
- Hodder family
- Hodge, James, 1856-1928
- Hodgett, Thomas, 1866-1921
- Hodgins, Edward, 1752-1840
- Hodgson, William, d. 1784
- Hodnett, Richard
- Hodson, George Frederick John, 1855?-1879
- Hoey, Catherine
- Hoey, Daniel, d.1919
- Hogan, Daniel, fl. 1690
- Hogan, Edmund, 1831-1917
- Hogan, Edmund, Fr., 1831-1917
- Hogan, Edmund Ignatius, 1831–1917
- Hogan, Henry, d. 1923
- Hogan, James, 1721-1781
- Hogan, James, 1898-1963
- Hogan, Jeremiah, 1890-1916
- Hogan, Jeremiah J., 1902-
- Hogan, Jeremiah Joseph, 1902–1982
- Hogan, Jim, 1933-
- Hogan, John, 1800-1858
- Hogan, John, 1800-1858 ; White, Mary, Countess of Bantry (née O'Brien), 1805-1853 ; White, Richard, 2nd earl of Bantry, 1800-1868
- Hogan, John, 1800-1858 ; White, Richard, 2nd Earl of Bantry, 1800-1868 ; White, Mary, Countess of Bantry (née O’Brien), 1805-1853
- Hogan, John, 1800-1858O'Connor, William, fl.1838-1846
- Hogan, John, 1800–1858
- Hogan, John, 1805-1892
- Hogan, John, fl. 1930
- Hogan, Martin, fl. 1876
- Hogan, Michael, 1832-1899
- Hogan, Nan, c.1899-1923
- Hogan, Patrick
- Hogan, Patrick, 1885-1969
- Hogan, Patrick, 1897-1921
- Hogan, Patrick, fl. 1932
- Hogan, Patrick D., 1919-2004
- Hogan, Patrick J. ('Paddy'), 1891-1936
- Hogan, Patrick J. (‘Paddy’), 1891–1936
- Hogan, Patrick T., 1899-1980
- Hogan, Sean, 1959-
- Hogan, Seán, 1900-1968
- Hogan, Seán, 1901-1968
- Hogarth, William, 1697-1764
- Hogarty, Pat, d. 2005
- Hogeson, William, mayor of Dublin, fl. 1493–1519
- Hogg, Alexander, 1870-1939
- Hogg, Douglas McGarel, 1st Viscount Hailsham, 1872–1950
- Hogg, James, 1770-1835
- Hoggart, Richard, 1918-
- Hohenlohe, Prince, quack
- Hohenlohe-Waldenburg-Schillingsfürst, Alexander Leopold, 1794-1849
- Hokanson, Nels M.
- Holden, Thomas W., fl.1903-1910
- Holfeld family
- Holinshed, Raphael, d. 1580?
- Holinshed, Raphael, d. 1580?
- Holland, Charles Hepworth
- Holland, Harry, 1868-1933
- Holland, John, 1841-1914
- Holland, John, 1882-1947
- Holland, John Philip, 1840-1914
- Holland, John Phillip
- Holland, Stephen, 1901-post 1959
- Holland, Thomas, earl of Kent and duke of Surrey, c.1374-1400
- Holland, Vyvyan Beresford, 1886-1967
- Holland family
- Hollar, Wenceslaus, 1607-1677
- Hollister,George K., 1873-1952
- Holloway, Joseph, 1861-1944
- Hollywood, Christopher, S. J., 1559-1626
- Holmes (Homes), William, 1663-1746
- Holmes, George, 1771-1854
- Holmes, George, fl. 1789-1804
- Holmes, Hugh, 1840-1916
- Holmes, James
- Holmes, James, fl. 1883
- Holmes, Joe, 1906-1978
- Holmes, John, Sir
- Holmes, Oliver Wendell, 1841-1935
- Holmes, R. Finlay G., 1926-
- Holmes, Robert, 1694-1727
- Holmes, Robert, Sir, 1622-1692
- Holmes, Robert John, 1903-1989
- Holmes, William, d.1944
- Holmes, William Wilson, d. 1897
- Holmes, William Wilson, d.1897
- Holmes family
- Holohan, Brendan
- Holohan, Robert, d. 2005
- Holohan, Thomas, 1896-1915
- Holroyd, John Baker, 1st earl of Sheffield, 1735-1821
- Holt, Ernest William Lyons, 1864-1922
- Holt, Herbert Samuel,1856-1941
- Holt, Herbert Samuel, Sir, d. 1941
- Holt, Joseph, 1756-1826
- Holt, Joseph, 1756?-1826
- Holt, Joseph, 1756?–1826
- Holt, Joseph, 1756x9-1826
- Holt, Joseph, 1756x9-1826,
- Holten, Anthony
- Holub, Miroslav, 1923-1998
- Honan family
- Hone, Evie Sydney, 1894-1955
- Hone, Evie Sydney, 1894-1955; Jellet, Mainie, 1897-1944
- Hone, John, c.1740-1819
- Hone, Joseph, 1937-
- Hone, Nathaniel, the elder, 1718-1784
- Hone, Nathaniel, the younger, 1831-1917
- Hone family
- Honohan, John W., 1860-1931
- Honoratus, bishop and saint, c.350-429
- Honorius I, Pope, fl.625-638)
- Hood, Robert, c.1797-1821
- Hook, George, 1941-
- Hooke, Luke Joseph, 1716-1796
- Hooke, Nathaniel, 1664-1738
- Hooke family
- Hooker, John, 1526?-1601
- Hooker, John, 1527?-1601
- Hooker, Richard, 1554?-1600
- Hooley, Terri
- Hooper, Edward
- Hooten, Earnest Albert, 1887-1954
- Hooton, Earnest Albert, 1887–1954
- Hooton, Earnest Albert, 1887–1954
- Hoover, Herbert, president of USA
- Hope
- Hope, James, 1764-1847
- Hope, John, fourth earl of Hopetoun, 1765-1823
- Hopkins, Ezekiel, Church of Ireland bishop of Derry, 1634–1690
- Hopkins, Gerard Manley, 1844-1889
- Hopkins, James, fl. 1799-1801
- Hopkins, Sir Francis, 1813-1860
- Hopkins, William, fl. 1799-1801
- Hopla, John
- Hopper family
- Horan, Elizabeth Mary, fl. 1928-51
- Horan, Hugh Charles, d. 1900
- Horan, James, Monsignor, 1911-1986
- Horan, James. Monsignor, 1911-1986
- Horan, Patrick Kevin, Rev., d. 1951
- Horan, Patrick Kevin, Revd, d. 1951
- Horan, Val, 1927-2006
- Hore, Herbert Francis
- Hore, James, fl. 1837
- Hore, Maria Gertrudis, 1742-1801
- Hore, Philip Herbert
- Hore, Thomas, Fr, 1795-1864
- Hore family
- Hore y Ley, María Gertrudis, 1742-1801
- Horgan, Denis, 1871-1922
- Horgan, John
- Horgan, Matt, Rev., 1774?-1849
- Horgan, Tony (Anthony), d.2023
- Horgan family ; Horgan, James ; Horgan, Philip ; Horgan, Thomas
- Horn, John, 1814-1895
- Horne, Alfred Edmund Charles, 1871-
- Horne, Andrew
- Horne, Andrew John, 1891-1963
- Horner, Arnold
- Hornick, John, 1843-1911
- Hornick, John, c.1898-1923
- Hornick, Margaret, c.1911-1923
- Horniman, Annie Elizabeth Fredericka, 1860-1937
- Horniman, Annie Elizabeth Fredrika, 1860-1937
- Horrigan, Finbarr, C.S.Sp., d.2009
- Horse racing
- Hort, Charles Josiah, 1820-1887
- Hort, F. J. A., 1828-1892
- Hort, Josiah, archbishop of Tuam, 1673–1751
- Hose, Hugh
- Hosier, Richard, fl. 1660-1685
- Hoskins, Thomas, d. 1821
- Hosty family
- Hotten, John Camden, 1832-1873
- Houben, Charles, 1821-1893
- Houben, John Andrew, Saint, 1821-1893
- Houdini, Harry (Erik Weisz), 1874-1926
- Houghegan, John d. 1799
- Houlihan, Edmond,1839-1931
- Houlihan, John, d. 1920
- Houlihan, Kathleen, b.c.1923
- Houlihan family
- Hoult, Eleanor Lucy (‘Norah’), 1894-1984
- Hourigan, Emma
- Houston, Arthur, fl. 1855-1866
- Houston, Thomas Galway 1843-1939
- Houston family
- Hoveden, Roger of, d. 1201x2
- Hovell, William
- Hovenden, Thomas, 1840-1895
- Hovenden family
- Howard, Charles, 1st earl of Carlisle, 1629-1685
- Howard, George William Frederick, 7th earl of Carlisle, 1802-1864
- Howard, George William Frederick, Viscount Morpeth, 7th earl of Carlisle, 1802-1864
- Howard, Gorges Edmond, 1715-1786
- Howard, Harry, 1911-
- Howard, Hugh, 1675-1738
- Howard, John, 1726-1790
- Howard, John, 1726?-1790
- Howard, John Philip, 1841-1914
- Howard, Maureen
- Howard, Patrick, d.1921
- Howard, Ralph, 1st Viscount Wicklow, 1727–1789
- Howard, Robert, d. 1740
- Howard, Robert, Sir, 1626-1698
- Howard, Rosalind (née Stanley), Countess of Carlisle, 1845-1921
- Howard, Thomas, earl of Surrey and 3rd duke of Norfolk, 1473-1554
- Howard, William, Lord, 1563-1640
- Howard-Bury, Charles, 1881-1963
- Howard-Bury, Kenneth, d. 1885
- Howard family
- Howden, Gerard, 1798-1883
- Howe, Derek, 1939-2007
- Howe, James, d. 1868
- Howe, John, 1630-1705
- Howe, Joseph, 1804-1873
- Howe Brown, Peter, 2nd Marquess of Sligo, 1788-1845
- Howell, Colin,
- Howell, Thomas, 1570-1666
- Howes, David 1965-1988
- Howis, William, 1804-1882
- Howley, Christy, c.1930-c.1995
- Howley, John, 1866-1941
- Howlin, Aloysius J.
- Hoy, Eamon, d.2017
- Hoy, Samuel, 1893-1916
- Hoy family
- Hoyne, Liam, 1920-2003
- Hoysted, Francis J, 1919-
- Hoüels (Howell), Thomas (aka La Tour), fl. 1627-1686
- Hrabanus Maurus (Rabanus Maurus Magnentius), c.780 – 856
- Huchinson, Richard Hely-, 1756-1825
- Huddleston, Robert, d. 1887
- Huddleston, Robert, d.1887
- Hudson, Dominick, fl. 1921
- Hudson, Edward, c.1742-1804
- Hudson, Henry (Philerin), 1798–1889
- Hudson, Howard, Joseph, 1909-1996
- Hudson, Pat
- Hudson, Robert George Spencer, 1894/5-1965
- Huenefeld, Ehrenfried Guenther, Freiherr von (1892-1929)
- Huet, Arthur H., fl1909
- Huggins, Margaret Lindsay, Lady, 1848-1915
- Huggins, William, Sir, 1824-1910
- Hughes, Arthur, 1908-2000
- Hughes, Berchmans, 1861-1925
- Hughes, Bernard (Barney), 1818-1878
- Hughes, Bernard, d. 1878
- Hughes, Brendan, 1948-2008
- Hughes, Charles, 1876-1949
- Hughes, Desmond Noel, 1901-1985
- Hughes, Eamonn
- Hughes, Henry, 1788-1860
- Hughes, Herbert, 1882-1937
- Hughes, Hugh Price, 1847-1902
- Hughes, John, 1865-1941
- Hughes, John, 1869-1935
- Hughes, John, 1889-1934
- Hughes, John, 1947-
- Hughes, John, bookseller, fl. 1802
- Hughes, John Joseph (Archbishop), 1797-1864
- Hughes, John Joseph, 1797-1864
- Hughes, John Joseph, Archbishop, 1797-1864
- Hughes, John Joseph, archbishop, 1797-1864
- Hughes, John Joseph, archbishop, 1797–1864
- Hughes, John Waring Maxwell, 1816-1906
- Hughes, Joseph
- Hughes, Katherine Angelina, 1876-1925
- Hughes, Kathleen Winifred, 1926-1977
- Hughes, Michael, c.1894-1976
- Hughes, Ned, fl. 1900-1961
- Hughes, Owen, fl.1931-1979
- Hughes, Patrick, 1820-1891
- Hughes, Patrick, fl.1890-36
- Hughes, Peter, 1878-1954
- Hughes, Sam, Sir, 1853-1921
- Hughes, Samuel, 1748-
- Hughes, Samuel, 1748-1829
- Hughes, Séamus, 1881-1943
- Hughes, T. Jones
- Hughes, T. Jones (Thomas Jones)
- Hughes, Ted, 1930-1998
- Hughes, Thomas, 1814-1855
- Hughes, Thomas Jones
- Hughes, William Morris, 1862-1952
- Hughes family
- Hugo, Thomas, fl. 1798
- Hugo family
- Hugo Illuminator
- Huleatt, John, fl. 1659
- Hull, Edward, 1829–1917
- Hull, Eleanor, 1860-1935
- Hull, Joseph, fl.1864-1878
- Hull, William, Sir, fl. 1616
- Humbert, Jean-Joseph, French general, 1767-1823
- Humbert, Jean-Joseph Amable, 1767–1823
- Hume, Abraham, 1814-1884
- Hume, David
- Hume, David, 1711-1776
- Hume, George Haliburton (Basil), 1923–1999
- Hume, Gustavus, Sir, 1677-1731
- Hume, John, 1937 – 2020
- Hume, John, 1937-
- Hume, John, 1937-2020
- Hume, John, Sir, fl. 1641
- Hume, Pat
- Hume Brown, Peter, 1849-1918
- Hume Dick, William Wentworth Fitzwilliam, 1805-1892
- Hume family
- Humes, Samuel, d.1804
- Humphreys, David, 1843-1930
- Humphreys, Dick (Richard), 1896–1968
- Humphreys, Joseph, 1787-1859
- Humphreys, Richard Somers Travers Christmas, Sir, 1867-1956
- Humphreys, Sighle, 1889-1994
- Humphreys, William, b.1798
- Humphreys family
- Humphries, Carmel, 1909-86
- Humphryes, Sighle, 1889-1994
- Humphry family
- Hungerford, Margaret Wolfe (née Hamilton), 1855-1897
- Hungerford, Margaret Wolfe, 1855-1897
- Hungerford family
- Hunt, Gerry, 1936-
- Hunt, John, 1900-1976
- Hunt, John, 1910-1998
- Hunt, John, d. 1976
- Hunt, John, Sir, 1910-1998
- Hunt, Michael, d. 1919
- Hunt, Vere, Sir
- Hunter, Bob
- Hunter, Humphrey
- Hunter, James, 1811-1897
- Hunter, Maud, 1860-1952
- Hunter, Robert, d. c.1803
- Hunter, Tom, 1883-1932
- Hunt family
- Hunt family (of Limerick [County Limerick])
- Huntington, Ellsworth, 1876-1947
- Huntington, Robert, orientalist and bishop of Raphoe, bap. 1637, d. 1701
- Huony, Daniel, 1683-1771
- Hurd, Douglas Richard, 1930-
- Hurlbert, William, 1827-1895
- Hurley, Charlie, 1894-1921
- Hurley, Jeremiah, fl.1900-1910
- Hurley, John, 1796-1882
- Hurley, John, 1881-1941
- Hurley, John,1887-1916
- Hurley, John Francis (Frank), 1891-1921
- Hurley, Joseph, S.J., 1905-1984
- Hurley, Kathleen, fl. 1937-1950
- Hurley, Michael, 1923-
- Hurley, Paddy, d.2009
- Hurley, Patrick, fl. 1699
- Hurley, Patrick, fl.1911-1919
- Hurley family
- Hurly, Keating, fl. 1847
- Hurly, Patrick, c.1666-1716
- Hurst, Brian Desmond, 1895-1986
- Hurst, Brian Desmond, 1900-1986
- Hurst, C. Herbert, c. 1856-1898
- Hurst, Gwenda, 1913-1966
- Hurton, Declan, 1882-1921
- Hus, Jan, c. 1369-1415
- Hussey, Christopher (Edward Clive), 1899 – 1970
- Hussey, Elizabeth (née Byrne), fl. 1913-1939
- Hussey, Gillian
- Hussey, James, 1869-1939
- Hussey, James, d. 1635
- Hussey, John, 1919-post-1966
- Hussey, Thomas
- Hussey, Thomas, bishop, 1741-1803
- Hussey, Thomas, bishop of Waterford and Lismore, 1746-1803
- Hussey de Burgh, Elizabeth Jane, 1802-1834
- Hussey family
- Huston, John, 1906-1987
- Hutch, William, 1844-1917
- Hutcheson, Francis, 1694-1746
- Hutcheson, Francis, 1694–1746
- Hutchins, Ellen, 1785-1815
- Hutchins, Ellen, 1785–1815
- Hutchins, Samuel Newburgh, 1834-1915
- Hutchinson, Archibald, c.1659-1740
- Hutchinson, Billy
- Hutchinson, Billy, 1955-
- Hutchinson, Francis, bishop, 1660-1739
- Hutchinson, Francis Henry Hely, 1839-1905
- Hutchinson, Hugh, d. 2020
- Hutchinson, James, 1886-1963
- Hutchinson, John Hely, 1724-1794
- Hutchinson, Joseph, fl. 1877-1906
- Hutchinson, Pearse, 1927-
- Hutchinson, Richard Hely-, 1st earl of Donoghmore, 1756–1825
- Hutchinson, Ron, 1947-
- Hutchinson, Ron, b.1947
- Hutchinson, Seán Hely, 1724-1794
- Hutchinson, Thomas Joseph, 1802-1885
- Hutchinson, William, 1715-1801
- Hutchinson, William, b.1955
- Hutchinson family
- Hutton, Annie, c.1825-1853
- Hutton, Annie, d. 1853
- Hutton, Henry, c.1754-1808
- Hutton,Henry, Dix 1824-1907
- Hutton, Lucius Octavius, d.1911
- Huxley, George,
- Hyde, Arthur
- Hyde, Douglas (de hÍde, Dubhghlas), 1860-1949
- Hyde, Douglas (de hÍde, Dubhghlas), 1860-1949
Lewis, (John) Saunders, 1893-1985
- Hyde, Douglas (de hÍde, Dubhghlas), 1860-1949 ; Kurtz, Lucy Cometina, 1861 - 1938
- Hyde, Douglas (de hÍde, Dubhghlas), 1860-1949 ; Pokorny, Julius, 1887-1970
- Hyde, Douglas (de hÍde, Dubhghlas), 1860-1949 ; Quinn, John, 1870-1924 ; Gregory, Lady (Isabella Augusta), 1852-1932 ; Yeats, W. B. (William Butler), 1865-1939
- Hyde, Douglas (de hÍde, Dubhghlas), 1860–1949
- Hyde, Douglas (de hÍde, Dubhghlas), 1860–1949 : Raiftearaí, Antaine (Ó Reachtabhra, Antoine; Raftery, Anthony), 1799-1835
- Hyde, Douglas (de hÍde, Dúbhghlas), 1860-1949
- Hyde, Douglas, (de hÍde, Dubhghlas), 1860-1949
- Hyde, Douglas, 1860-1949
- Hyde, Douglas, de hÍde, Dubhghlas, 1860-1949
- Hyde, Douglas, de hÍde, Dubhghlas, 1860-1949,
- Hyde, Douglas, De hÍde Dubhghlas, 1860-1949
- Hyde, Edward, 1st earl of Clarendon, 1609-1674
- Hyde, Edward, 3rd earl of Clarendon, 1661-1723
- Hyde, H. Montgomery (Harford Montgomery) (1907-1989)
- Hyde, John III, 1803-1885
- Hyde, John Oldfield, 1854-1896
- Hyde, Lex, c.1918-c.2009
- Hyde family
- Hyder, Thomas, 1803-1874
- Hyer, Tom "Young America", fl. 1849
- Hyland, Bridget, fl. 1895
- Hyland, John, b.c.1952
- Hyland, Mary, 1889-?
- Hylands family
- Hyndman, Dan, d.1957
- Hyndman, George Crawford, 1796–1867
- Hynes, Francie, d. 1882
- Hynes, Peter, d.1923
- Hynes family
- Hywel Dda, prince of Dyfed, Deheubarth and Gwynedd, d. 949x50
- Hákonarson, Hákon, d. 1263
- Ian Mor clan
- Iarlaithe (Jarlath), bishop and saint, fl. c.550
- Ibar (Ibhar, Iberius, Ivory), bishop, d. 500?
- Ibsen, Henrik, 1828-1906
- Ieuan ap Sulien, d. 1137
- Ievers family
- Ignatius of Loyola, 1491-1556
- Igoe, Kitty, d.2017
- Inchbald, Elizabeth, 1753-1821
- Inchiquin, Ethel, Lady
- Inchiquin family
- In English Finnian of Iveragh
- Ingham family
- Inghean Bhaoith/Bhuidhe, Saint
- Inglis, Brian, 1916-
- Inglis, Charles, bishop, 1734-1816
- Inglis, Gordon, d. 1896
- Inglis, Henry David (pseudonym Derwent Conway), 1795–1835
- Inglis, Henry David, 1795-1834
- Inglis, Liam, 1708-1778
- Inglis, Tom
- Inglis family
- Ingram, Jane, d.1868
- Ingram, John Kells, 1823-1907
- Ingram, Rex, 1893-1950
- Innes, Thomas W., fl.1831
- Innocent III, pope, 1160x1-1216
- Innocent IV, pope, d. 1254
- Innocent VIII, Pope, 1432-1492
- Innocent X, Pope, 1574-1655
- Innocent XI, Pope, 1611-1689
- Iníon Baoith
- Iolo Goch, poet and lord of Llechryd, fl. 1328-1405
- Iorard Mac Coisi, d. 1023
- Ireland, Denis, 1894-1974
- Ireland, John, 1838-1918
- Ireland, John de Courcy, 1911-2006
- Ireton, family
- Ireton, Henry, 1611-1651
- Irish people outside Ireland
- Irvine, Alexander, 1863-1941
- Irvine, Alexander Fitzgerald, fl. 1900
- Irvine, David, 1953-2007
- Irvine, George
- Irvine, George, 1877-1954
- Irvine, James, 1914-1982
- Irvine, William, 1743-1787
- Irvine family
- Irving family
- Irwin, Charles Kendal 1863-1929
- Irwin, Charles King, Bishop of Connor
- Irwin, Henry (Fr Pat), 1859-1902
- Irwin, Henry, MD, fl.1832
- Irwin, Henry I., 1859-1902
- Irwin, Lewis, fl. 1779
- Irwin, Thomas Caulfield, 1823-1892
- Irwin family
- Irwin of Tanrego, 1786
- Isaacs, Isaac, d. 1791
- Iserninus
- Isidore of Seville, bishop and saint, c.560-636
- Isidore of Seville, saint, d.636
- Ita, Saint, d. 570x7
- Ita, saint, d. 570x7
- Ita, Saint, d.570x7
- Ivernois, François d', 1757-1842
- Iverson, Ida. G
- Ivory, Edward, d.1917
- Ivory, Thomas, 1732-1786
- Jack le Irish, fl. 1315
- Jackman family
- Jackson, (William) Valentine, c.1880-1952
- Jackson, Adam, fl. 1820
- Jackson, Andrew, 1767-1845
- Jackson, Bill, d. 2006
- Jackson, Charles
- Jackson, Eddie, fl. 1930s
- Jackson, family
- Jackson, James Edward, 1778-1841
- Jackson, James Thomas, 1868-1938
- Jackson, Kenneth H. (1909-1991)
- Jackson, Kenneth Hurlstone, 1909–1991
- Jackson, Richard, 1721x2-1787
- Jackson, Richard, 1722-1787.
- Jackson, Stephen, 1700-1765
- Jackson, Thomas, 1786-1813
- Jackson, Thomas, 1807-1890
- Jackson, Thomas, 1807–1890
- Jackson, Thomas, fl. 1700-1708
- Jackson, Thomas, Sir, 1841-1915
- Jackson, Thomas Jonathan (Stonewall) (1824-1863)
- Jackson, William, 1737?–95
- Jackson, William Collins, 1754-1814
- Jackson, William Edwin, d. 1882
- Jackson family
- Jackson family (of Ulster)
- Jacob, Alice, 1862-1921
- Jacob, Arthur, 1790-1874
- Jacob, Charles, fl.1888-1916
- Jacob, David Baldwin, 1837-1912
- Jacob, family
- Jacob, George Newsom, 1854–1942
- Jacob, George Ogle, 1819-1857
- Jacob, John, 1754-1827
- Jacob, John, 1805-1864
- Jacob, Joshua, 1801-1877
- Jacob, Owen, fl.1857-1860
- Jacob, Robert, 1831-1861
- Jacob, Robert, Sir, fl. 1611-1613
- Jacob, Rosamond, 1888-1960
- Jacob, Rosamond, d. 1960
- Jacob, Thomas, fl.1840
- Jacob, William Beale, 1825-1902
- Jacob, William Gardiner, 1860-1914
- Jacob family
- Jacobovits, Immanual, Lord, Chief Rabbi, 1921-
- Jacobs, John Edmund, 1805-1864
- Jacobsen, Theodore, d. 1772
- Jacobsen, Werner, 1952-
- Jacques de Vitry, d. 1240
- Jaffray, Bill, 1927-2012
- Jageurs, John Davitt, 1895-1916
- Jahangir (Jehangir) Emperor of India, 1569 -1627
- James, Alice, 1848-1892
- James, Henry, 1820-1890
- James, Henry, 1843-1916
- James, Jesse Woodson James, 1847-1882
- James, Montague Rhodes, 1862-1936
- James ap Gruffydd ap Hywel, 1490?-
- James Boyd and Sons.
- James Francis Edward Stuart, 1688-1766
- James II, king
- James II and VII, king, 1633-1701
- James III and VIII, 1688-1766
- James IV of Scotland, 1473 – 1513
- James of Ireland, fl 1320
- Jameson, Andrea, b. 1953
- Jameson, Andrew, fl. 1941
- Jameson, Anna Brownell, 1794-1860
- Jameson, Henry Lyster, c.1875-1922
- Jameson family
- James V, king of Scots, 1512-1542
- James VI & I, king, 1566-1625
- James VI & I, king, 1566-1625,
- James VI & I, king, 1566-1625; Charles I, king, 1600-1649; Rinuccini, Giovanni Battista, bishop, 1592-1653
- James VI and I, 1566-1625
- James VII & II, king, 1633-1701
- James VII & II, king, 1633-1701,
- Jan III Sobieski, king of Poland, 1629-1696
- Jansen, Henrik M., 1942-2000
- Janszoon van Haarlem, Jan, first President and Grand Admiral of Corsair Republic of Sale (aka "Murat Reis The Younger"), c.1570-1641
- Jaquarello, Roland, 1945-
- Jarlath, Saint 'see' Iarlaithe (Jarlath), bishop and saint, fl. c.550
- Jarlath, Saint, c.445-c.540
- Jarlath, Saint, d. c. 550
- Jarvis, Ernest, 1880-1917
- Jaucourt, Louis de, 1704-1780
- Jay, John, 1745-1829
- Jean de Brébeuf, saint, 1593-1649
- Jeauneau, Édouard, 1924-2019
- Jebb, David, 1738-1826
- Jebb, John, 1775–1833
- Jebb, John, 1805-1886
- Jebb, John, bishop, 1775-1833
- Jebb, Joshua, Sir 1793-1863
- Jebb, Richard, fl. 1729-1732
- Jeffereyes, James St John, Sir, 1771–1781
- Jefferson, Thomas, 1743-1826
- Jeffery, Keith, 1952-2016
- Jefferyes, James, d. 1739
- Jeffrey, Bill, Sir
- Jeffreys, Richard Griffith Bassett, Lieutenant-Colonel, 1876-1923
- Jeffries, Arthur, d. 1918
- Jekyll, Gertrude, 1843-1932
- Jellet, Mainie, 1897-1944
- Jellett, Hewitt Poole, d. 1911
- Jellett, Mary Harriet, Mainie, 1897-1944
- Jellett family
- Jellicoe, Anne, 1823-1880
- Jellicoe, Anne, d. 1880
- Jellicoe, John Rushworth, 1st Earl Jellicoe, 1859-1935
- Jellicoe, John Rushworth, 1859-1935
- Jellicoe family
- Jenings family
- Jenkins, J. Geraint (John Geraint)
- Jenkins, Roy Harris, baron Jenkins of Hillhead, 1920-2003
- Jenkins, Samuel, 1832-1868
- Jenkinson, Biddy (pseud.), 1949-
- Jenkinson, Biddy (pseud.), 1949- ; Ní Dhomhnaill, Nuala
- Jenkinson, Edward, fl. 1887
- Jenkinson, Edward George, 1835-1919
- Jenkinson, Robert Banks, 2nd earl of Liverpool, 1770-1828
- Jenner, Edward, 1749-1823
- Jennings, Brendan, O.F.M., 1883-1970
- Jennings, Brendan, OFM, 1883-1970
- Jennings, Frances, duchess of Tyrconnell, c.1649-1731
- Jennings, Francis, fl.1883
- Jennings, Peter, 1938-2005
- Jennings, Richard, 1787-1874
- Jennings, Rickard
- Jennings family
- Jephson, Denham, M.P. ?1748-1813
- Jephson, Robert, 1737–1803
- Jephson-Norreys, Denham, fl.1813-1827
- Jephson family
- Jermyn, Henry, earl of St Albans, bap. 1605, d. 1684
- Jerome,Jerome Klapka, 1859-1927
- Jerome, saint, c.347-419/420,
- Jerome, Saint, c.347-420
- Jerome, Stephen, fl. 1604-1650
- Jervas, Charles, 1675-1739
- Jervas, Charles, 1675?-1739
- Jervas, Charles, c.1675-1739
- Jervis, Sir Humphrey, 1630-1707
- Jervois, Samuel, c.1620-1694
- Jessop, Christina, 1878-1968
- Jessop, Christina, 1878-post 1908
- Jessop, John Reginald, 1891-1916
- Jessop, William, 1745-1814
- Jevons, William Stanley, 1835-1882
- Jewel, John, archbishop, 1522-1571
- Jewel, John, bishop, 1522-1571
- Jim Connell, 1852-1929
- Jinnah, Mohamed Ali, 1876-1948
- Joannon, Pierre
- Joaquin, Nick
- Jocelyn, Percy, Hon, 1764-1843
- Jocelyn, Robert, Viscount Jocelyn, 1816 - 1854
- Jocelyn family, earls of Roden
- Jockers, Matthew L.
- Johansdotter [Månesköld], Elin fl. 1600
- John, king
- John, king ('John Lackland'), 1167-1216
- John, king, 1167-1216
- John, King of England, 1166-1216
- John Cassidy, 1860-1939
- John Coterel, d.1345
- John del Palagio, d. 1504?
- John Duns Scotus
- John Henry Tunstall, 1853-1878
- John of Gaddesden, 1280?-1361
- John Paul II, 1920 - 2005 : Pope Francis
- Johns, Jasper 1930-
- John Scottus Eriugena, c.810-870×880
- John Scottus Eriugena, c.810-c.870/880
- Johnson , (Emily) Pauline (a.k.a. Tekahionwake, “double wampum”), 1861-1913
- Johnson, David S., d. 1998
- Johnson, Edmond, designer
- Johnson, Esther, 1681-1728
- Johnson, Frank, fl. 1816
- Johnson, Joseph Forsyth, 1840-1906
- Johnson, Lionel Pigot, 1867-1902
- Johnson, Lyndon B., 1908-1973
- Johnson, Lyndon Baines, 1908-1972
- Johnson, Marie, 1874-1974
- Johnson, Nevill
- Johnson, Nevill, 1911-1999
- Johnson, P.F., 1835-1926
- Johnson, Patrick Keenan, 1922-2013
- Johnson, Richard, fl.1758-1772
- Johnson, Richard, fl.1758-1772,
- Johnson, Samuel, 1709-1784
- Johnson, Thomas, 1872-1963
- Johnson, Thomas P.
- Johnson, Thomas Ryder (1872–1963
- Johnson, Thomas Ryder, 1872–1963
- Johnson, Tom 1872-1963 ; Johnson, Maria 1874-1974
- Johnson, William (Bill), 1887-1969
- Johnson, William, Sir (1715?-1774)
- Johnson, William, Sir, 1715-1774
- Johnson, William Frederick, 1852-1934
- Johnson family
- Johnson Westropp, Thomas, 1860-1922
- Johnston, (William) Denis, 1901–84
- Johnston, Andrew, fl. 1830-1845
- Johnston, Anna
- Johnston, Anna, see Carbery, Ethna, 1866–1902
- Johnston, Denis, 1901-1984
- Johnston, Francis, 1760-1829
- Johnston, Francis, 1760/61-1829
- Johnston, Galbraith Hamilton, 1822-1894
- Johnston, George, 1808-c.1898
- Johnston, Gerry
- Johnston, H. A., 1883-1959
- Johnston, James Patrick, 1861-1932
- Johnston, Jennifer, b. 1930
- Johnston, John
- Johnston, John, 1846-1913
- Johnston, John Ernest, 1923-2013
- Johnston, Joseph, 1890-
- Johnston, Joseph, 1890-1972
- Johnston, Patrick, 1924-1994
- Johnston, Richard, 1759-1806
- Johnston, Robert, 188?-1966
- Johnston, Robert, 1872-1950
- Johnston, Robert Mackenzie, 1843-1918
- Johnston, William, 1829-1902
- Johnston, William Denis, 1901-1984
- Johnston, William Frederick, 1852-1934
- Johnstone (Johnston), Charles, c.1719 - c.1800
- Johnstone (Johnston), Charles, c.1719–c.1800
- Johnstone (née Todd; other married name M'Leish), Christian Isobel, 1781–1857
- Johnstone, John, 1749-1828
- Johnstone, Netta Jane Nicholl, 1897-1953
- Johnstone, Robert Henry, 1848-1934
- Johnston family
- John XXII, pope, c.1224-1334
- Joinville, Jean, sire de, c.1224-1317
- Joinville, Jean de, 1224-1317
- Jolliffe, Norah Christina, 1900-1951
- Joly, Charles Jasper, 1864-1906
- Joly, Jaspar Robert, 1819–1892
- Joly, John, 1857-1933
- Joly, John Plunket, 1826-1858
- Joly family
- Jonas (of Susa, of Bobbio), c.600-c.659
- Jonas, d.p.659
- Jonas, fl. 600-640
- Jonas of Bobbio, fl. 600-659
- Jones, 1606-1649
- Jones, Agnes, 1832-1868
Nightingale, Florence, 1820-1910
- Jones, Anna (née Bagnall), fl. 1836-1862
- Jones, Edward, printer
- Jones, Edward William, 1833-1906
- Jones, Frederick Edward, 1759-1834
- Jones, Henry, bishop, d. 1682
- Jones, Henry, churchman, 1605-1682
- Jones, Henry Macnaughton, 1844-1919
- Jones, J.A., fl. 1809-1814
- Jones, Jack, 1913-2009
- Jones, John, fl.1700-1711
- Jones, John, Joseph 1873-1941
- Jones, Katherine, 1615–1691
- Jones, Katherine, Lady Ranelagh, 1615-1691
- Jones, Marie, 1951-
- Jones, Mary (nee Harris) ('Mother Jones'), 1837?-1930
- Jones, Mary (née Harris) Mother Jones’), 1837-1930
- Jones, Mary Harris, "Mother", fl. 1871
- Jones, Mary Harris, 'Mother', 1837-1930
- Jones, Mary Latchford (Kingsmill), 1877–1968
- Jones, Michael, 1606/10-1649
- Jones, Michael, Colonel, fl. 1649
- Jones, Michael, fl. 1649
- Jones, Micheal, b.1920
- Jones, Patrick, d.1956
- Jones, Patrick Henry, 1830-1900
- Jones, Richard, 1st earl of Ranelagh, 1641–1712
- Jones, Richard, 1641–1712, 1st earl of Ranelagh
- Jones, Theobald, M.P., 1790-1868
- Jones, Tom, 1868-1950
- Jones, Walter A., 1878-1939
- Jones, William, Sir, 1746-1794
- Jones, William Bence
- Jones, William Todd, 1757–1818
- Jones family
- Jones Hughes, Thomas
- Jones Hughes, Thomas, 1922-2011
- Jonson, Ben, 1573-1637
- Jonson, Ben, 1573?-1637
- Jope, Edward Martyn, 1915-1996
- Jordaens, Jacob (Jacques), 1593-1678
- Jordaens, Jacob, 1593-1678
- Jordan, (John) Robert Furneaux (Robert Player), 1905-1978
- Jordan, Anthony J.
- Jordan, Dorothea, 1761-1816
- Jordan, Eithne
- Jordan, Jeremiah, 1830-1911
- Jordan, John, 1930-1988
- Jordan, Neil, 1950-
- Jordan, Robert Furneaux, 1905-1978
- Jordan, Vilhelm Lasser
- Jorden family
- Joseph Fulton,
- Joseph II, emperor, 1741-1790
- Joshi, Kalpana, d. 1995
- Joughin, Tom, c.1890-1917
- Joughin family
- Jourdan, George V., 1868-1955
- Joy, Francis, 1697-1790
- Joy, George William, 1844-1925
- Joy, Henry, Jnr, 1754-1835
- Joyce, Ann, fl. 1652
- Joyce, Henry, d.1697
- Joyce, James (Augustine), 1882-1941
- Joyce, James (Augustine Aloysius), 1882-1941
- Joyce, James (Augustine Aloysius) 1882-1941
- Joyce, James, 1882-1941
- Joyce, James, 1882-1941
- Joyce, James Augustine, 1882-1941
- Joyce, James Augustine, 1882-1941
- Joyce, James Augustine, 1882–1941
- Joyce, James Augustine Aloysius, 1882-1941
- Joyce, John A., c.1919-2014
- Joyce, John Stanislaus, 1849-1930
- Joyce, Lucia, 1907-1982
- Joyce, mannix, 1921-2006
- Joyce, Mannix see Seoighe, Mainchín
- Joyce, Margaret, 1911-1972
- Joyce, Martin, 1910-1991
- Joyce, Michael, 1851-1941
- Joyce, Murt, 1916-2004
- Joyce, Nan, 1940-
- Joyce, Owen
- Joyce, Patrick, d.1920
- Joyce, Patrick, doctor, fl. 1900
- Joyce, Patrick Weston (1827-1914)
- Joyce, Patrick Weston, 1827-1914
- Joyce, Richard, fl. 1691-1737
- Joyce, Robert Dwyer
- Joyce, Robert Dwyer, 1830-1883
- Joyce, Steve
- Joyce, Thomas
- Joyce, Trevor, 1947-
- Joyce, William, 1906-1946
- Joyce, William Brooke (‘Lord Haw-Haw’), 1906–46
- Joyce, William Brooke, 1906-1946
- Joyce, William Henry, 1850-1928
- Joyce family
- Joyce family (of Merview)
- Joye (?Joyce) family
- Joyes y Blake, Inéz, 1731-1808
- Joynt, Ernest, c.1884-1926
- Joynt, Maud
- Judd, Charles Francis M., fl.1915-1919
- Judd, John,1896?-1918
- Judge, John, 'Jack' 1872-1938
- Judge, John Thomas [Jack], 1872–1938
- Judge, Peter, 1891-1947
- Judge family
- Jukes, Joseph Beete, F.R.S., 1811-1869
- Julius Agricola, Gnaeus, 40-93
- Julius II, pope, d. 1513
- Juncosa, Enrique
- Juncosa, Enrique, b. 1961
- Junius, pseud., fl. 1768-1772
- Jupp, Peter, 1940-2006
- Jurin, James, 1684-1750
- Jurisic, Dragana,
- K'Eogh, John, c.1681-1754
- K'Eogh, John, c.1681–1754
- Kalashnikov, Mikhail Timofeyevich, 1919-2013
- Kalkbrenner, Friedrich Wilhelm, pianist and composer, 1748-1849
- Kalloway, Robert, 1844-1934
- Kane (née Baily), Katherine Sophia, 1811–1886
- Kane, Charles, OFM, 1765/66-1828
- Kane, Henry Coey, Admiral, 1843-1917
- Kane, Hugh, 1921-2004
- Kane, Katherine (née Baily), 1811-1880
- Kane, Katherine Sophia, 1811–1886
- Kane, Michael, b. 1935
- Kane, Paddy, b.1908
- Kane, Patrick, 1895-1966
- Kane, Paul, 1810-1871
- Kane, Richard, 1666-
- Kane, Richard, Brigadier-General 1662-1736
- Kane, Robert, 1809-1890
- Kane, Robert John, Sir, 1809-1890
- Kane, Robert John , Sir, 1809-1890
- Kane, Sir Robert John, 1809-1890
- Kane, Thomas, 1805-1890
- Kane, William Francis de Vismes, 1840-1918
- Kant, Immanuel, 1724-1804
- Kaplan, Franz, fl.1934-1963
- Kato, Eileen, 1932-2008
- Katski, Antoni, 1817-1899
- Kauffman, (Anna Maria) Angelica Catharina, 1741–1807
- Kauffman, Angelica, 1741-1807
- Kauffmann, Angelica, 1741-1807
- Kavanagh (Kaveney) family
- Kavanagh, Andy, 1909-1999
- Kavanagh, Arthur Macmorrough, 1831-1889
- Kavanagh, Arthur McMurrough, 1831-1889
- Kavanagh, Brian L.
- Kavanagh, Christopher, 1939-
- Kavanagh, Dennis, 1867-1965
- Kavanagh, Donal Spáinneach of Clonmullen, 1552-1631
- Kavanagh, Ernest (1884-1916)
- Kavanagh, Ernest (E.K.), 1884-1916
- Kavanagh, Felix von, of Clon Molling, 1682-1735
- Kavanagh, Flora, née MacDonald, b. c.1900
- Kavanagh, Harriet (née Le Poer Trench), 1800-1885
- Kavanagh, Harriet, Lady, 1799-1885
- Kavanagh, James, 1756?-1828
- Kavanagh, James, 1855-1929
- Kavanagh, James, 1856-1903
- Kavanagh, James, d.1882
- Kavanagh, John, 1749-1825
- Kavanagh, John, 1826-1862
- Kavanagh, John, fl.1915-1922
- Kavanagh, Joseph, fl. 1792-93
- Kavanagh, Joseph Malachy, 1856–1918
- Kavanagh, Lady Harriet Margaret, 1800–1885
- Kavanagh, Lawrence, 1764-1830
- Kavanagh, Lawrence, fl.1828-1846
- Kavanagh, Lawrence, I, fl. 1777
- Kavanagh, Lawrence, Sgt., 1914-1951
- Kavanagh, Martin, 1838-1933
- Kavanagh, Maurice (Kruger), 1894-1971
- Kavanagh, Maurice, 1894-1971
- Kavanagh, Maurice, fl. 1798
- Kavanagh, Maurice, fl. 1798-1799
- Kavanagh, Maurice Ignatius, Count von, fl. 1786-1801
- Kavanagh, Michael, 1812-1864
- Kavanagh, Michael, 1861-
- Kavanagh, Michael, d. 1998
- Kavanagh, Michael, fl. 1875
- Kavanagh, Michael, fl. 1881
- Kavanagh, Morgan "Prussia", b. c 1692, d. 1780
- Kavanagh, P. J., Br., d. 2002
- Kavanagh, Patrick, 1904-1967
- Kavanagh, Patrick, 1904–1967,
- Kavanagh, Patrick F., 1838-1918
- Kavanagh, Patrick F. 1838-1918
- Kavanagh, Peter, 1916-2006
- Kavanagh, Sean, 1927-2002
- Kavanagh, Séan, 1897-1984
- Kavanagh, Thomas, 1767-1837
- Kavanagh, Thomas, Major, fl. 1847-1881
- Kavanagh, Thomas Henry, 1821-1882
- Kavanagh, Walter, 1759-1818
- Kavanagh family
- Kay, Dorothy, 1886-1964
- Kay-Shuttleworth, James Phillips, Sir, 1804-1877
- Kaye, Arthur, 3rd Bt, (c.1670-1726)
- Keady, Tony, 1964-2017
- Kealey family
- Keally, Joseph
- Keane, Desmond, b.1924
- Keane, Edward Thomas (‘E. T.’), 1867-1945
- Keane, Eucharia, Sister, 1915-2005
- Keane, John, 1949-
- Keane, John, B., 1928-2002
- Keane, John, Sir, 1873-1956
- Keane, John B., 1928-2002
- Keane, John James, 1871-1956
- Keane, John Joseph, 1839-1918
- Keane, Marcus, 1815-1884
- Keane, Marcus, d. 1883
- Keane, Maurice Ignatius "Moss", 1948-2010
- Keane, Michael, fl. 1782-1797
- Keane, Molly (Mary Nesta), 1904-1996
- Keane, Molly, 1904-1996
- Keane, Raymond
- Keane, William, Bishop of Cloyne, fl. 1857-1869
- Keane family
- Keane family, of Oranmore
- Kear, Richard, 1826-1901
- Kear family
- Kearney, Charles
- Kearney, David, archbishop, c.1558-1624
- Kearney, J.J., c.c., fl.1908-1916
- Kearney, James, fl.1790
- Kearney, James F., 1884-1946
- Kearney, John (Ó Cearnaigh, Seán), c.1545-c.1587
- Kearney, John (Ó Cearnaigh, Seán), c.1545–c.1587
- Kearney, John, d. 1600?
- Kearney, John, d. 1653
- Kearney, John B., 1871-1946
- Kearney, Joseph, d.1816
- Kearney, Kevin, Mother, 1875-1957
- Kearney, Lawrence (1789-1868)
- Kearney, Michael
- Kearney, Michael, fl. 1630s
- Kearney, Neil, 1950-2009
- Kearney, Peadar, 1883-1942
- Kearney, Peter, 1889-1957
- Kearney, Peter, 1899-1968
- Kearney, Peter, d.1816
- Kearney, Philip (1815-1862)
- Kearney, Teresa, 1875-1957
- Kearney, William, d.1816
- Kearney, William, fl.1592-1595
- Kearney family
- Kearns, Linda
- Kearns, Linda, 1886-1951
- Kearns, Michael d. 1799
- Kearns, Mogue, Fr., d. 1798
- Kearns, Mogue, Fr., d. 1798
- Kearns, Nicholas, d. 1832
- Kearns, Séamus, c.1930-2014
- Kearns, Thomas, 1862-1918
- Kearns family
- Kearon, James, fl. 1939
- Keary, Anna, fl. 1875
- Keating, Catherine (Mother M. Martina), 1879-1965
- Keating, Christina (Mother M. Visitation), 1868-1960
- Keating, Dan
- Keating, Dan, 1902-2007
- Keating, Geoffrey (Céitinn, Seathrún), c.1580-c.1644
- Keating, Geoffrey (Céitinn, Seathrún), c.1580-c.1644 ; McGrath family ; Mac Craith family
- Keating, Geoffrey, 1570?-1644?
- Keating, Geoffrey, Céitinn, Seathrún, c.1580- c.1644
- Keating, Henry Singer, Sir, 1804-1888
- Keating, James, bishop of Ferns, 1783-1849
- Keating, Justin, 1930-2009
- Keating, Matthew, 1877-1950
- Keating, Mike, 1903-1958
- Keating, Mother M. Aloysius, fl.1895-97
- Keating, Mother M. John
- Keating, Patrick, d.1886
- Keating, Sean (1889-1977)
- Keating, Sean, 1889-1977
- Keating, Sean, d. 1977
- Keating, Seán, 1889-1977
- Keating, Seán, 1889–1977
- Keating, Séan, 1889-1977
- Keating family
- Keaveney, Raymond,
- Keawell, Patrick, 1864-1933
- Keefe, Matt, 1811-1887
- Keeffe, Eugene
- Keeffe, James,bishop of Kildare and Leighlin, 1702-1787
- Keeffe family
- Keegan, Edward, 1880-1938
- Keegan, John, 1813-1893
- Keegan, John, 1816-1849
- Keegan family
- Keelan, James, d. 1824
- Keeling, Mary (née Monks), 1880-1975
- Keely family
- Keena, John, d.1867
- Keenan, Brian, 1941-2008
- Keenan, Brian, 1950-
- Keenan, John Sproule, fl. 1817-1823
- Keenan family
- Kehoe (Keogh), Tom, 1899-1922
- Kehoe, Conor Paul Francis, 1858-1931
- Kehoe, Imelda, d.2014
- Kehoe, John, 1865-1943
- Kehoe, Margaret, d. 1916
- Kehoe, Michael, c.1754-1818
- Kehoe, Michael, d. 1818
- Kehoe, Michael d. 1818
- Kehoe, Nora, 1873-1952
- Kehoe, Richard, 1897-1987
- Kehoe, Richard, 1915-1973
- Kehoe, Sean, d.2009
- Kehoe, William, 1842-1929
- Kehoe family
- Keightley, Frances, Lady, 1675-1725
- Keightley, Samuel Robert
- Keiley, Anthony M., 1932-1965
- Keily, Daniel, 1832-1867
- Keily-Ussher, Arthur, 1777-c.1862
- Keiser, David S.
- Kelburn, Alexander, fl. 1768-1789
- Kelleher, Isabel Marion (née Johnston), 1883-1969
- Kelleher, John V., 1916-2004
- Kelleher, John V. 1916-2004
- Kelleher, Mary
- Kelleher, Tom, 1895-1918
- Keller, (Canon) Daniel, 1839-1922
- Kelley, R. Dudley
- Kelliher, Richard
- Kelliher family
- Kellogg, Frank Billings, 1856-1937
- Kelly, Arthur
- Kelly, Bob, 1925-2005
- Kelly, Charles Edward, 1902-1981
- Kelly, Cornelius, 1897-1917
- Kelly, D. H. (Denis Henry), 1797-1877
- Kelly, Danny, c.1905-1980
- Kelly, Deirdre, 1938-2000
- Kelly, Denis, bishop, 1852-1924
- Kelly, Dennis H., fl. 1832-1863
- Kelly, Dominick, fl.1768-c.1806
- Kelly, Edward "Ned", 1854/55-1880
- Kelly, Edward,
- Kelly, Edward, 1883-1944
- Kelly, Eva (Mary Anne) , 1830-1910
- Kelly, Francis, bishop, d. 1888
- Kelly, Gerard, 1957-
- Kelly, Gerry, 1948-
- Kelly, Gertrude Bridget, 1862-1934
- Kelly, Harry, d.2001
- Kelly, James Plunkett, 1920-2003
- Kelly, Jamie, 1885-1971
- Kelly, Jimmy, 1942-2018
- Kelly, John "Mac", 1890-
- Kelly, John, 1672-1765
- Kelly, John, 1773-1798
- Kelly, John, 1931-1991
- Kelly, John, 1948-2023
- Kelly, John, fl. 1872
- Kelly, John Forrest, d. 1922
- Kelly, John Joseph, 1898-1957
- Kelly, John Maurice, 1931–1991
- Kelly, Joseph, c.1704-1745
- Kelly, Liam, Monsignor
- Kelly, Luke, 1940-1984
- Kelly, Martin
- Kelly, Martin J., 1926-2015
- Kelly, Mary, 1867-1946
- Kelly, Mary Anne, Eva, 1830-1910
- Kelly, Mary Anne Eva, 1830-1910
- Kelly, Mary Jane (née Gill), 1874-1967
- Kelly, Matthew, 1814–1858
- Kelly, May, d. 2000
- Kelly, Michael, 1762-1826
- Kelly, Ned, 1854-1880
- Kelly, Nicky, fl. 1976
- Kelly, Nora
- Kelly, Oisin, 1915-1981
- Kelly, Oliver, archbishop of Tuam, 1777-1834
- Kelly, Oliver, d. 1837
- Kelly, Patricia, 1916-
- Kelly, Patrick, 1904-1995
- Kelly, Patrick, bishop, d. 1829
- Kelly, Patrick, c.1821-1864
- Kelly, Patrick Jeremiah, 1869-1936
- Kelly, Patrick Joseph, Bishop, 1894-1991
- Kelly, Peggie (Garrett O'Driscoll), 1902-1969
- Kelly, Peggy (Garrett O'Driscoll), 1902-1969
- Kelly, Phyllis, 1892-1991
- Kelly, Richard John, 1860-1931
- Kelly, Robert, 1825-1905
- Kelly, Robert, d. 1961
- Kelly, Robert George, 1822-1910
- Kelly, Sam
- Kelly, Samuel Sir, 1879-1937
- Kelly, Sarah, 1801-1856
- Kelly, Seamus, 1895-1986
- Kelly, Seán, 1952-
- Kelly, Simon, fl.1612-1697
- Kelly, Stephen, fl. 1867
- Kelly, Sydney
- Kelly, Thomas
- Kelly, Thomas (Tom), 1868–1942
- Kelly, Thomas (Tom), Alderman, 1868-1942
- Kelly, Thomas, b. 1933
- Kelly, Thomas, c.1808-1852
- Kelly, Thomas, d. 1835
- Kelly, Thomas, fl. 1942
- Kelly, Thomas J.
- Kelly, Thomas J., 1833-1908
- Kelly, Thomas James, Colonel, 1833-1908
- Kelly, Tom, 1868-1942
- Kelly, Tom, d. 1942
- Kelly, W.J. fl.1930-1948
- Kelly, Walter
- Kelly, William, 1806-1881
- Kelly, William John, 1861-1951
- Kelly, William Waldron, 1781-1836
- Kelly, Éamon, 1914-2001
- Kelly family
- Kelsall, E.J. (Miss), 1832-1897
- Kemmis family
- Kemmy, Jim, 1936-1997
- Kemmy, Jim, d. 1997
- Kempe, Margerie, c.1373-c.1440
- Kempster, John, 1846-1918,
- Kempster, John, d. 1918
- Kende, Gábor, 1924-
- Kende, Rosa, née Doyle
- Kendrick, Joe, c.1894-c.1976
- Keneally, Thomas, 1935-
- Kenealy, Edward Vaughan Hyde, 1819-1880
- Kenealy, William, 1828-1876
- Kenna, Mike, d.2000/2001
- Kenna, Raymond, c.1918-1982
- Kennard family
- Kenneally, Paddy, 1923-2012
- Kennedy, A.E. (Arthur Edward), 1810-1883
- Kennedy, A. E., fl. 1850
- Kennedy, Arthur Edward, Sir, 1810-1883
- Kennedy, Arthur Edward, Sir, d. 1883
- Kennedy, Charles Preston, d. 1886
- Kennedy, Dan
- Kennedy, David, 1904-1974
- Kennedy, David, b.1953
- Kennedy, Dennis, 1936-
- Kennedy, Duncan, d. 1836
- Kennedy, Edward, c.1891-1915
- Kennedy, Edward, senator
- Kennedy, Edward Stephen, 1895-1969
- Kennedy, Evory, 1806-1886
- Kennedy, George, c.1764-1842
- Kennedy, Gilbert, 1717-1773
- Kennedy, Henry, fl1900-1960
- Kennedy, Hugh, 1879-1936
- Kennedy, Hugh, 1879–1936
- Kennedy, James (‘Jimmy’), 1902–1984
- Kennedy, James, 1886-1914
- Kennedy, Jimmy, 1902-1971
- Kennedy, Jimmy, 1903-1984
- Kennedy, John, b. 1928
- Kennedy, John Fitzgerald, 1917-1963
- Kennedy, John Joseph, 1874-1957
- Kennedy, John Russell 1861-1928
- Kennedy, Josephine, fl. 1848
- Kennedy, Joseph P. (Joseph Patrick), 1888-1969
- Kennedy, Kate
- Kennedy, Marie, 1905-2003
- Kennedy, Mary Elizabeth, fl. 2003
- Kennedy, Michael, 1850-1912
- Kennedy, Michael, d. 2009
- Kennedy, Michael, fl. c.1950
- Kennedy, P.G., 1881-1966
- Kennedy, Patrick, 1801-1873
- Kennedy, Patrick, bishop, 1786-1850
- Kennedy, Patrick Bonaventure, O. F. M., 1855-1924
- Kennedy, Patrick Bonaventure, OFM, 1855-1924
- Kennedy, Patrick Brendan, 1929-1966
- Kennedy, Phil, d. 1798
- Kennedy, Richard, 1785-1810
- Kennedy, Robert, Sir, 1851-1936
- Kennedy, Stanislaus
- Kennedy, Thomas, c.1624-1714
- Kennedy, Tristram Edward, 1805-1885
- Kennedy, William P., d. 1921
- Kennedy family
- Kennedy Miller, J., fl 1900
- Kennellly, Joan, d.2006
- Kennelly, Brendan, 1936-
- Kennelly, Brendan, 1936-2021
- Kennelly, Emmet, d.2018
- Kennelly, Michael, 1920-1982
- Kennelly, Paddy, c.1896-1965
- Kennelly, Padraig, 1929-
- Kennelly, Tadhg, 1981-
- Kennerk, Cornelius (Con), 1898-1915
- Kennerk family
- Kenney, James, 1780-1849
- Kenney, James Francis, 1894-1946
- Kenney, Peter James, 1779-1841
- Kenney, Tom, fl. 1991-1998
- Kenny, Claire, née Gammell, 1939-2009
- Kenny, Eliza, d. 1917
- Kenny, Enda, 1951-
- Kenny, Enda, b.1951
- Kenny, Henry Egan, ('Sean-Ghall'), 1871–1936
- Kenny, Ivor, 1930-
- Kenny, James, c.1884-1953
- Kenny, James, fl.1851-1853
- Kenny, John, fl. 1916
- Kenny, Joseph E., 1845-1909
- Kenny, Kevin John, 1881-1954
- Kenny, Kieran, c.1887-1922
- Kenny, Patrick (Paddy), c.1913-1934
- Kenny, Patrick Dermott, 1862-1944
- Kenny, Paul, Fr, O.D.C., fl. 1715
- Kenny, Peter, 1779-1841
- Kenny, Teresa, fl. 1850
- Kenny, Tom, 1877-1947
- Kenny, Tom, 1963-2014
- Kenny, Tom, c.1887-1947
- Kenny, Tom, fl.1890-1947
- Kenny family
- Kenrick, Peter Richard, archbishop of St Louis, 1806-1896
- Kent, David, Canon, fl. 1926-1941
- Kent, Edmond, 1915-1999
- Kent, Thomas, 1865-1916
- Kent and Strathern, Edward Augustus, duke of, 1767-1820
- Kentigern, Saint, d. 612x14
- Kenyon, John, 1812-1869
- Kenyon, John, fl. 1861
- Keogh, Cyril, 1932-2016
- Keogh, Gerald, c.1896-1916
- Keogh, Gerald, d.1916
- Keogh, James, fl. 1876-1890
- Keogh, John
- Keogh, Lyndon, 1872-1901
- Keogh, Margaret, 1901/1902-1921
- Keogh, Margaret, c.1902-1921
- Keogh, Michael, 1891-1964
- Keogh, Myler, 1867-1916
- Keogh, Myles, 1840-1876
- Keogh, Myles Walter, 1840-1876
- Keogh, Thady, O.P., bishop, d. 1687
- Keogh, Vincent
- Keogh, William Nicholas, 1817-1878
- Keoghan, Barry, 1992-
- Keogh family
- Keohane, Jerome, 1907-
- Keohane, Patrick, 1879-1950
- Keohane, Patrick T.
- Keohane, Sister Mary Austin, c.1930-2013
- Keon, Myles Gerald, 1821-1875
- Ker, David, fl. 1798
- Ker, W.P., 1855-1923
- Ker family
- Kerin, Elizabeth (nee Evans), 1881-1967
- Kerin, John, 1753-1823
- Kerin, Patrick, fl. 1661-2
- Kerins, Andrew, fl. 1887
- Kerins, Walter, d.1974
- Kermode, Philip Moore Callow, 1855-1932
- Kernan, Edward, d. 1844
- Kernan, James, d. 1929
- Kernan, Randal, 1774-c.1844
- Kernan family
- Kernan Mullen, John, 1847-1929
- Kerney, Leopold
- Kerney, Leopold H. c. 1881-1955
- Kerney, Leopold Harding, 1881-1962
- Kernoff, Aaron, Harry, 1900-1974
- Kernoff, Harry (1900-1974)
- Kernoff, Harry, 1900-1974
- Kerr, Donal, 1927-2001
- Kerr, John, 1925-2006
- Kerr, Letitia, Louisa, Lady, fl.1825-1885
- Kerr, Mark, Lord, 1776-1840
- Kerr, Philip
- Kerr, Philip, 1882-1940
- Kerr, William, earl of Ancram, fl. 1798
- Kerr, William Carlisle, 1909-1999
- Kerrigan, Gene
- Kerrigan, Paul, 1937-2009
- Kerrill, Saint
- Kershaw, James, 1726-1797
- Kershaw, James, bap. 1730?, d. 1797
- Kerzhentsev, Platon Mikhailovich (Platon Lebedev), 1881-1940
- Kessel, Joseph
- Kettle, Andrew J., 1833-1916
- Kettle, Laurence J., 1878–1960
- Kettle, Mary, fl.1911-1937
- Kettle, Thomas, 1880-1916
- Kettle, Thomas Michael (‘Tom’), 1880–1916
- Kettle, Thomas Michael, 1880-1916
- Kettle, Tom, 1880-1916
- Kevany, Patrick, c.1826-1896
- Kevin, Saint, d. 618
- Kevin, Saint, d.618
- Kevin, the dolphin
- Kevin Saint d 618
- Keyes, Geoffrey, 1917-1941
- Keyes, Michael J, 1876-1959, bishop of Savannah
- Keyes, Paddy, fl. 1921-1935
- Keynes, Geoffrey Langdon, Sir, 1887-1982
- Keynes, John Maynard, Baron Keynes, 1883-1946
- Keynes, John Maynard, Baron Keynes, 1883–1946
- Keys, Thomas, c.1879-1930
- Khan, Louis, 1901-74
- Kiang, Tao, 1929-2009
- Kickham, Charles J., 1828-1882
- Kickham, Charles J. 1828-1882
- Kidd, James, 1761-1834
- Kidd, Joseph, d. 1881
- Kidd, William, d. 1893
- Kidd, William, d. 1911
- Kidd family
- Kielty, Jim, 1917-2014
- Kiely, Benedict, 1919-
- Kiely, James, c.1834-1918
- Kiely, Orla
- Kiely, Richard, 1873-
- Kiely, Tom, 1869-1951
- Kieran, Michael, bishop, 1803-1869
- Kierans, George Frederick,1893-1935
- Kierans, George Frederick, fl. c.1894-1935
- Kiernan, Kitty, d. 1945
- Kiernan, Thomas Joseph (‘Tommy’; ‘T. J.’), 1897-1967
- Kiernan, Victor Gordon, 1913-
- Kilbride, Denis, 1848-1924
- Kilbride-Jones, Howard Edward
- Kilburn, William, 1745-1818
- Kildare, earls of
- Kildare, Earls of, see FitzGerald family, earls of Kildare
- Kilfeather, Brigid, fl. 1940-1970
- Kilfeather, Frank, 1941-
- Kilgallon, John Aloysius, 1891-1972
- Kilham, Alexander, 1762-1798
- Kilian, Saint, 640 689
- Kilian, Saint, 640?-689
- Kilkelly, Martin, d. c.1999
- Kilkelly, Matthew, fl. 1847
- Killaly, John, 1766-1832
- Killen, William Dool, 1806-1902
- Killian family
- Killilea, John, d. 1879
- Killingley, A.V.G., fl. 1916
- Kilmurray, Avila
- Kilpatrick, Cecil Stephen, 1921-2013
- Kilroy, Michael, 1884-1862
- Kilroy, Thomas, 1934-
- Kimball, Solon Toothaker, 1909-1982
- Kimmage family
- Kinahan, Coralie, Lady, 1924-
- Kinahan, Daniel, 1756-1827
- Kinahan, George Henry, 1829-1908
- Kinahan, Robin, Lord, 1916-
- Kinane, Paddy, 1892-1957
- Kinane, Vincent, 1953-2000
- Kinane family
- Kincaid, Francis, 1812-1847
- Kincaid, Glenn E., d.1944
- Kincaid, Joseph, fl. 1827-1840
- Kincaid, Robert, fl.1840-1849
- Kinchela, James Butler
- Kindellan family
- Kindness, John, b. 1951
- King, A.L. Kathleen, 1894-1978
- King, Abraham Bradley, Sir, 1774-1838
- King, Alice Mary, 1880-1921
- King, Augusta Ada, Countess Lovelace, 1815-1852
- King, Cecil, 1921-1986
- King, Cecil Harmsworth, 1901–1987
- King, Edward, Viscount Kingsborough, 1789-1837
- King, George
- King, Heather Anne, 1945-2020
- King, Henry, 3rd baronet, c.1681-1739
- King, Henry Edward, 1832-1910
- King, Jeremiah, 1868-1927
- King, John
- King, John, 1803-1863
- King, John, 1841-1872
- King, Luke White, 1797-1873
- King, Mary
- King, Mary Elizabeth, d.1819
- King, Murtagh (c.1562-c.1639)
- King, Murtagh (Ó Cionga, Muircheartach), c.1562–c.1639
- King, Padge, fl. 1880
- King, Pat
- King, Richard (Rísteard Ó Cíonga), 1907-1974
- King, Richard, 1907-1974
- King, Richard, d. 1974
- King, Robert, 1815-1900
- King, Robert, fl. 1854
- King, Robert, viscount Kingsborough and 2nd earl of Kingston, 1754-1799,
- King, Robert, viscount Kingsborough and 2nd earl of Kingston, d. 1799
- King, Robert King, 2nd Earl of Kingston
- King,Seamus J. b.c.1938
- King, Tony, fl. 2003
- King, William, 1650-1729
- King, William, 1663-1712
- King, William, 1809-1886
- King, William, archbishop of Dublin, 1650-1729
- King, William, archbishop of Dublin, 1650–1729
- King, William, archbishop of Dublin ; Digby, Simon, bishop of Limerick ; Dopping, Anthony, bishop of Meath ; Wetenhall, Edward, bishop of Cork and Ross ; Vesey, John, archbishop of Tuam
- King, William, bishop, 1650-1729
- King, William III, 1650-1702
- King-Hall, Magdalen, 1904-1971
- King-Harman, Edward Robert, 1838-1888
- King-O'Riain, Rebecca Chiyoko
- King-Tenison, Edward, 1805-78
- Kingerlee, John, b. 1946
- King family
- King family (of Ballylin)
- King family, earls of Kingston
- Kingsborough family
- Kingsley, Mary Henrietta, 1862-1900
- Kingston, James, fl.1906-1935
- Kingston, Lucy Olive, 1892-1969
- Kingston, Margot, Sr, 1908-
- Kingston, Robert King, earl of, 1754-1799
- Kingston, Willie, 1885-1975
- Kingston family
- Kingstons
- Kinkead, Alice, 1871-1926
- Kinnear, John, 1824-1909
- Kinnock, Neil, 1942-
- Kinsella, John
- Kinsella, Kathleen, d. 2002
- Kinsella, Nick, d. 1998
- Kinsella, Thomas, 1928-
- Kinsella, Thomas, 1928-2021
- Kinsella, Thomas, 1928-2021 ; Ó Riada, Seán, 1931-1971 ; Whitaker, Thomas Kenneth, 1916-2017
- Kinsella, William Charles ("Kingsley") (1833-1885)
- Kinsella family
- Kipling, Joseph Rudyard, 1865-1936
- Kipling, Joseph Rudyard, 1865-1936, see Kipling, Rudyard, 1865-1936
Kipling, Rudyard, 1865-1936
- Kipling, Rudyard, 1865-1936
- Kirby, Michael (Ua Ciarmhaic, Micheál), 1906-1995
- Kirby, Michael, 1906-
- Kirby, Peadar
- Kirby, Tobias, 1804-1895
- Kirby, Tobias, 1804?-1895
- Kirby family
- Kircher, Athanasius 1602-1680
- Kirk, John, Irishman transported to Australia, fl. 1800
- Kirk, Thomas, 1781-1845
- Kirkland, James, c. 1711-1779,
- Kirkpatrick, family
- Kirkpatrick, James, 1676–1743
- Kirkpatrick, James Achilles, 1764-1805
- Kirkpatrick , Khair-un-Nissa, 1786-1813
- Kirkpatrick, Robert F.
- Kirkpatrick, Thomas Percy Claude, 1869-1954
- Kirkpatrick, William George (Mir Ghulam Ali Sahib Allum) , 1801-1828
- Kirkpatrick, William Thompson, 1848-1921
- Kirkpatrick family
- Kirkwood family
- Kirwan, Denis, 1808-1872
- Kirwan, Doreen
- Kirwan, Edward, c.1971-2008
- Kirwan, family
- Kirwan, Francis, d. 1661
- Kirwan, Francis d. 1799
- Kirwan, J.W., fl. 1845-1849
- Kirwan, John Waters, 1866-
- Kirwan, John Waters, Sir, 1869–1949
- Kirwan, Joseph W., 1796-1849
- Kirwan, Richard, 1733-1812
- Kirwan, Richard, 1949-
- Kirwan, Sara, -1852
- Kirwan, Sr Magdalen, c.1830-1906
- Kirwan, Valentine E., 1899-1979
- Kirwan, Wally
- Kirwan, William Burke (Bourke), c.1814-1880?
- Kirwan family
- Kirwin, Sarah Marie 1819-1852
- Kitchener, Horatio Herbert, 1st Earl Kitchener of Khartoum and of Broome, 1850-1916
- Kitchener, Horatio Herbert, 1st earl Kitchener of Khartoum and of Broome, 1850-1916
- Kitchener, Horatio Herbert, 1850-1916
- Kitchener, Phillip Elliott, 1807-1875
- Kitchinman, Thomas, fl. 1628-1629
- Kitson, Andy d.1955
- Kitson, Frank Edward, 1926-2024
- Kitson Clark, George Sidney Roberts, 1900-1975
- Knatchbull, Timothy
- Kneller, Godfrey [formerly Gottfried Kniller], baronet, 1646–1723
- Knight, Alfred, b. 1905
- Knight, Robert, earl of Catherlough, 1700-1772
- Knight family
- Knights of Glin
- Knights of Kerry
- Knott, (Philipa Marie) Eleanor, 1886-1975
- Knott, (Philippa Marie) Eleanor, 1886–1975
- Knott, Eleanor (1886-1975)
- Knott, Eleanor, 1886-1975
- Knott, John Freeman, 1853-1921
- Knott, John Freeman, 1853–1921
- Knott Eleanor, 1886-1975
- Knowles, Bertha Goddard, fl.1917-1918
- Knowles, Matilda, 1864-1933
- Knowles, Matilda Cullen, d.1933
- Knowles, William James, 1832-1927
- Knowles, William James, c.1831-1927
- Knox, Alexander, 1737-1831
- Knox, Alexander, 1757-1831
- Knox, Andrew, 1559-1633
- Knox, Archibald, 1864-1933
- Knox, Harry Blake, c.1845-1917
- Knox, Henry, 1750-1806
- Knox, Iain J. W., 1946-
- Knox, Isabelle, fl. 1837
- Knox, James, d.1848
- Knox, John, c.1514-1572
- Knox, John Busteed, d.1864
- Knox, Kathleen
- Knox, Laurence Edward, 1836-1973
- Knox, Lawrence, fl. 1930-1950
- Knox, Paddy, (Brother Lawrence O'Toole), fl.1946
- Knox, Robert Buick, Rev., d. 2004
- Knox, Robert Buick, Revd, d. 2004
- Knox, Thomas, 1729-1818
- Knox family
- Koch, Christopher, 1932-2013
- Koehl, Capt. Hermann, (1888-1938)
- Kohl, Johann Georg, 1808-1878
- Kokoschka, Oskar, 1886-1980
- Kolesar, Robert
- Komolafe, Julius
- Korshin, Paul J., 1939-2005
- Kossuth, Lajos
- Koutouzow-Tolstoy, Michael, Count see Kutuzov-Tolstoy, Michael Pavlovich, Count 1896-1980
- Kreisman, Daniel Z.
- Kruger, Stephanus Johannes Paulus, 1825-1904
- Kucera, Julius, 1898-1935
- Kuhlman, Thomas A.
- Kuhn, Adalbert, 1812-81
- Kullmann, Kurt, d.2019
- Kuss, Gerald Victor, c.1920-1969
- Kuttner, Karl Gotlob
- Kutuzov-Tolstoy, Michael Pavlovich, Count 1896-1980
- Kyffin, Maurice, c.1555-1598
- Kyle, Maeve, b.1928
- Kynaston, Elizabeth, fl.1650-16??
- Kynaston, John, d.1650
- Kyne, John Anthony, bishop, 1904-1966
- Kyteler, Alice, Dame, c.1260-
- Kyteler, Alice, Dame, c.1260- ; Kyteler, Alice, Dame, fl. 1324
- Kyteler, Alice, Dame, c.1263 ; Ledrede, Richard, OFM, Bishop, d.1361
- Kyteler, Alice, Dame, fl. 1324
- K’Eogh’, John, c. 1681-1754
- L'Estrange, Thomas,
- L., Veronica, c.1929-1961
- Labatt, Samuel Bell, 1770-1849
- Labdon, Ernest George, 1870-1944
- Labraid, Loingsech Máen
- Labre, Benedict Joseph, d.1783
- Lacey, Denis (‘Dinny’), 890–1923
- Lacey, Dinny
- La Chaussée, Major
- Lachtain, Saint, d.?622
- Lachtin, saint,
- Lackey family
- Laclos, Pierre Choderlos de, 1741-1803
- Lacordaire, Jean-Baptiste Henri-Dominique, 1802-1861
- Lacy (Lasi, Lasci, Lascay), Peter Edmund (Pyotr Petrovich), 1678-1751
- Lacy, Francis Maurice, 1725-1801
- Lacy, Hugh de (I) a. 1140–1186
- Lacy, Hugh de, 1176-1242
- Lacy, Hugh de, c.1140-1186
- Lacy, Hugh de, earl of Ulster, c.1176-1242
- Lacy, Hugh de, earl of Ulster, c. 1176-1242
- Lacy, Hugh de, earl of Ulster, c.1176–1242
- Lacy, Hugh de, earl of Ulster, d. 1242
- Lacy, Hugh de, earl of Ulster c.1176–1242
- Lacy, Hugh de, lord of Weobley, Herefordshire, and lord of Meath, c.1140-1186
- Lacy, Hugh de, lord of Weobley, Herefordshire and lord of Meath, 1140-1186
- Lacy, Hugh de, lord of Weobley Herefordshire and lord of Meath, 1140-1186
- Lacy, Peter
- Lacy, Peter, 1678-1737
- Lacy, Thomas ('the Dacent Lacy'), fl. 1860
- Lacy, Thomas, fl.1840-1863
- Lacy, Walter de, 1170?-1241
- Lacy, Walter de, d. 1241
- Ladeveze Adlercron (née Rothe), Dorothea, 1800-1879
- Ladeveze Adlercron, John, 1782-1852
- Lady Gregory, Isabella Augusta, 1852-1932
- Laewrenson, Alice Louise, fl.1896-1899
- Laffan, May, fl. 1850-1916
- Laffan, Michael, 1945-
- Laffan, William M., 1937-
- Laffey, Mary, b. 1885
- Lafranchini, Filipo (Philip), 1702-c.1779
- Lafranchini, Filippo, 1702-1779
- Lafranchini, Paolo (Paul), 1695-1776
- Lafranchini, Paulo, 1695-1770
- Lafranchini, Paulo, 1695-1770,
- Lahert, Richard, 1849-1921
- Lahiff, Michael, c.1889-1916
- Lahy, Richard, 1695?-1773
- Laidlaw, Graeme
- Laighléis, Tomás, fl. 1900-1970
- Laird, John
- Laird, Norman, 1906-1970
- Laird family
- Laisrén of Daiminis, Saint
- Lajpat Rai, Lala, 1865-1928
- Lake, Eric
- Lake, George Augustus Frederick, 1780-1808
- Lake, Gerard, 1744-1808
- Lake, Gerard, 1744–1808
- Lally, Anthony, 1840-1902 ; McCormick, Dillon J, 1832-1913 ; Dougher, Patrick A., 1846-1907 ; Lavelle, JOhn F., 1859-1928 ; Ward, Martin P., 1846-1920 ; Henehan, Martin J., 1857-1934
- Lally, family
- Lally, Isaac, fl.1590-1631
- Lally, Michael Joseph, 1850-1900
- Lally, Stephen, fl. 1920
- Lally, Thomas Arthur
- Lally, Thomas Arthur, count, c.1702-1766
- Lally, Thomas Arthur, Count, c.1702-1766 ; Talbot, Richard, Earl and Duke of Tyrconnell, 1630–1691 ; Wogan, Charles, ‘the Chevalier Wogan’, 1698?–1757?
- Lally, Trophime-Gérard, b.1751
- Lally family
- Lalor, Anna, fl 1922
- Lalor, James, fl.1888-1954
- Lalor, James Fintan, 1807-1849
- Lalor, James Fintan, 1807–1849
- Lalor, Joseph, 1811-1886
- Lalor, Ned
- Lalor, Peter, 1827-1889
- Lalor, Peter, fl. 1889
- Lalor, Tom
- Lalor family
- Lamb, Charles, d. 1964
- Lamb, Charles Vincent, 1893-1964
- Lamb, Keith, c.1919-2011
- lamb, Roger, 1756-1830
- Lambart, Frederick Rudolph, 10th Earl of Cavan, 1865-1946
- Lambe, Edward (Ned), 1891-1973
- Lambert, Bob (Robert James), 1874–1956
- Lambert, Eric, 1909-1996
- Lambert, Henry E., Fr, 1878-1964
- Lambert, Matthew, fl. 1550-1600
- Lambert, Thomas Albert, 1928-2005
- Lambert, Thomas Stanton, 1871-1921
- Lambert, Walter, Curate, fl. 1860-1872
- Lambert, Walter, Revd., fl. 1860-1872
- Lambert family
- Lambertson, Milan, Rev.
- Lambton, John George, 1st Earl of Durham, 1792-1840
- Lamennais, Hugues Félicité Robert de, 1782-1854
- Lamont, Donal, bishop, 1911-2003
- Lamotte, Rose, d.1769
- Lampe, John Frederick, c.1702-1751
- Lamport, William (de Lombardo, Guillén) (c. 1611–1659)
- Lamport, William, c.1611-1659
- Lancaster, (aka Tennant), Lilian, 1852-1939
- Lancaster, Joseph, 1778-1838
- Lanczos, Cornelius, 1893-1974
- Landers, Edmond J., 1937-1968
- Landers, Edward, 1881-1921
- Landers, John James, 1834-1921
- Landor, Walter Savage, 1775-1864
- Landreth, Helen Adelia, 1892-1981
- Landweer, Sonja, b. 1933
- Lane, Denny, 1818-1895
- Lane, Hugh, 1875-1915
- Lane, Hugh Percy, Sir, 1875-1915
- Lane, Nicholas, fl.1539
- Lane, Ralph, c.1530-1603
- Lane, Sheila, d. 2022
- Lane, Sir Hugh, 1875-1915
- Lane, Sir Hugh Percy, 1875-1915
- Lane, T. O'Neill (Timothy O'Neill), 1852-1915
- Lane, Timothy O'Neill, 1852–1915
- Lane, Victor, fl.2012
- Lanfiere, Thomas fl.1660-1695
- Lanfranc, bishop, c.1010-1089
- Lang, Elfrieda
- Lang, James T., F.S.A., 1935-1997
- Lang, Louis, 1814 – 1893
- Lang, Michael, 1874-1948
- Langer, Frida, 1888-1942
- Langford, Richard
- Langford, Riobárd
- Langford, Thomas Alexander, fl. 1853
- Langford family
- Langham family
- Langhorne, William, H. b.1867
- Langland, William, 1330?-1400?
- Langley, Batty, 1696-1751
- Langley, Batty, bap. 1696, d. 1751
- Langlois Lefroy, Thomas (d. 869)
- Langrell (Langrill) family
- Langrell, Isaac, 1890-1943
- Langrishe, James, Dean of Achonry, 1765-1847
- Langrishe, John S., fl. 1885
- Langrishe, Richard, d. 1922
- Langrishe, Rosabel Sara, fl. 1880
- Langrishe family
- Lanigan, John, 1758-1828
- Lanigan, John, d. 1828
- Lanigan, John 1760-
- Lanigan, Mary, d. 1827
- Lanktree, John, fl. 1851
- Lansdowne, William Petty, Marquis of, 1737-1805
- Lanyon, Charles, Sir, 1813-1889
- Lanyon, Charles, Sir, 1813–1889
- Laoide, Seosamh, 1865-1939
- Lao Tzu, 6th c BC?
- Lappan, Francis, Rev.
- Lappenberg, Johann Martin
- Larcher, John, Sir
- Larcom, Thomas Aiskew, 1801-1879
- Larcom, Thomas Aiskew, 1801-1879,
- Larcom, Thomas Aiskew, d. 1879
- Lardner, Dionysius, 1793–1859
- Lardner, James Carrige Rushe, 1879-1925
- Lardner, Kitty
- Lardner, Kitty, d.2005
- Large, Peter Somerville
- Larkin, Delia, 1878-1949
- Larkin, Delia, 1878–1949
- Larkin, Eamon, 1949-2011
- Larkin, Emmet, 1927-
- Larkin, Emmet, 1927-2012
- Larkin, family
- Larkin, Gerry, 1930-
- Larkin, James
- Larkin, James (Jim), 1874-1947
- Larkin, James, 1874-1909
- Larkin, James, 1874-1947
- Larkin, James, 1874–1947
- Larkin, James,1874–1947
- Larkin, James, 1876-1947
- Larkin, James, 1904-1969
- Larkin, James, d.1847
- Larkin, James Fintan, 1936-2000
- Larkin, Jim (James), 1876-1947
- Larkin, Jim (James, 'Big Jim'), 1874–1947
- Larkin, Michael, d. 1867
- Larkin, Michael, d.1867
- Larkin, Michael, d.1867,
- Larkin, Patrick Joseph
- Larkin, Peter, 1880-1931
- Larkin, Philip Arthur, 1922–1985
- Larkin, Sean, d.1923
- Larkin, William, c.1770-c.1821
- Larkin, William, fl. 1800-1809
- Larkin, William, fl.1800-1819
- Larkin, William, fl. 1802-1819
- Larminie, William, 1849-1900
- Larmor, Joseph, Sir, 1857-1942
- La Roche-Aymon, Charles-Antoine de, arch bishop, 1696-1777
- Larrea y Aherán, Francisca Javiera Ruiz de, 1775-1838
- Lasair, Saint
- Lasair, saint
- Lascelles, Francis, fl. 1720-60
- Lascelles, Francis, fl. 1720-1760
- Lascelles, Francis Edward, fl. 1769-1840
- Lascelles, Lewis, fl.1902-1943
- Lascelles, Lucy, fl. 1797-1840
- Laserian, Saint, 566-639
- Laski, Harold Joseph, 1893-1950
- Latchford family
- Latewar, Richard, 1559x60-1601
- Latham, Henry, d.2003
- Latham, James, 1696-1747
- Latham, James 1696-1747
- Lathcen (Laidcenn), ? - 661
- Latiaran, Saint
- Latimer, William Thomas, 1842-1919
- La Tocnaye, Jean Louis de Bougrenet, chevalier de, fl. 1796-1797
- La Touche,1703-1785
- La Touche, Averell, 1885-1915
- La Touche, David Digues
- LaTouche, Emily, d.1884
- La Touche, Everard, 1883-1915
- La Touche, Peter, 1733–1828
- La Touche family
- La Tour d'Auvergne, Henri de, Viscount Turenne, 1611-1675
- Latrobe, Benjamin, 1728-1786
- Lattimore, Ralph, 1848-1891
- Lattin, John, d. 1731
- Lattin family
- Laud, William, archbishop, 1573-1645
- Laud, William, bishop, 1573-1645
- Laughlin, Henry
- Laughton, Freda
- Laurence O'Toole, bishop and saint, 1130-1180
- Laurence O'Toole, bishop and saint, 1130?-1180
- Laurier, Henri Charles Wilfrid, Sir, 1841-1919
- Lavallin, Patrick
- Lavelle, Des, 1934-
- Lavelle, Patrick, 1825-1886
- LaVere, David
- Lavers, Nathaniel Wood, 1828-1911
- Laverty (Kelly), (Mary) Maura, 1907–1966
- Laverty, Maura [née Kelly], 1907-1966
- Laverty, Robert Anthony, 1924-1942
- Laverty family
- Lavery, Cecil
- Lavery, Hazel, 1880-1935
- Lavery, Hazel, 1886-1935
- Lavery, Hazel, d. 1935
- Lavery, John, 1856-1941
- Lavery, John, d.1916
- Lavery, John, Sir, 1856-1941
- Lavery, John, Sir. 1856-1941
- Lavery, Sir John, 1856-1941
- Lavie family
- Lavin, John Joe, d.2001
- Lavin, Mary, 1912-1996
- Lavin, Mary, writer, 1912-1996
- Lavin, Mary 1912-1996
- Lavin, Tom, Rev., d.1975
- Lavin family
- Law, Andrew Bonar, 1858-1923
- Law, Edward Jeremy, 1945-2013
- Law, John, 1671-1729
- Law, William, 1686-1761
- Lawder, James, d.1779
- Lawler, John, 1832-1891
- Lawler, John and Son.
- Lawler, Joseph, 1838-1917
- Lawler, Joseph, fl. 1871-1901
- Lawler, Michael Kelly, 1814-
- Lawler, Ruth (née Folan), c.1951-2021
- Lawless, Emily (1845–1913)
- Lawless, Emily, 1845-1913
- Lawless, Emily, 1845–1913
- Lawless, Emily. 1845-1913
- Lawless, Emily. 1845-1972
- Lawless, Emily 1845-1913
- Lawless, Gerald R., 1936-
- Lawless, Jack, fl. 1828
- Lawless, Joseph, fl. 1916-1958
- Lawless, Joseph, fl 1916-1958
- Lawless, Matthew James, 1837-1864
- Lawless, Valentine, 4th Baron Cloncurry, 1840-1928
- Lawless, Valentine Browne, 2nd baron Cloncurry, 1773-1853
- Lawless, William, 1772-1824
- Lawless family
- Lawlor, George, 1894-1961
- Lawlor, Henry Cairnes, 1870-1943
- Lawlor, Hugh Jackson, 1860-1938
- Lawlor, John, 1820?-1901
- Lawlor, John Hilliard, d. 1889
- Lawlor, Tom, 1842-1916
- Lawlor family
- Lawrence, Ernest, 1937-2009
- Lawrence, George St Patrick, Sir, 1804–1884
- Lawrence, John Laird Mair, 1st baron Lawrence, 1811-1879
- Lawrence, Margaret, 1966-1995
- Lawrence, Mother Mary, 1895-1971
- Lawrence, Richard, d. 1684
- Lawrence, Richard, d.1684
- Lawrence, T. E., 1888-1935
- Lawrence, Thomas Edward, 'of Arabia', 1888-1935
- Lawrence, William John, 1862–1940
- Lawrence, William Mervyn, 1840-1932
- Lawrence family
- Lawrence O'Toole, archbishop of Dublin
- Lawrenson, Alice, d. 1900
- Lawrenson, Sarah Anne, 1855-1928
- Lawson, John, 1708/9-1759
- Lawson, William, +1553/4–1635
- Lawton, Bartholomew, ?-1903
- Lawton, Liam, Rev., fl.1997-2015
- Layamon, fl. 1200
- Layborne family
- Layer, Christopher, fl. 1720
- Layless, Peter, 1912-1987
- Layton, Esse, d.2011/2012
- Lazenby, Noel, M.B.E., d.2008
- Lazenby, Robert Edward, 1871-1926
- Lea, Florence, fl. 1911-1918
- Lea-Wilson, née Ryan, Monica, 1887-1973 ; McQuaid, John Charles, archbishop, 1895-1973 ; Clarke, Harry (Henry Patrick), 1889–1931
- Leadbeater, Lydia, fl. 1827
- Leadbeater, Mary, 1758-1826
- Leadbetter, Mary
- Leader, Michael, d. 1998
- Leader, Michael Edward Basil, 1915-1998
- Leader, Nicholas Philpts, MP, 1773-1836
- Leader-Williams, Geoffrey, 1911-2011
- Leahy, Alice, 1942-
- Leahy, Cornelius (‘Con’), 1876–1921
- Leahy, Delia, d. 2010
- Leahy, Edmund, 1813-1888
- Leahy, John Pius, 1802-1890
- Leahy, Michael, fl. 1920-1951
- Leahy, Patrick, archbishop, d. 1875
- Leahy, Patrick, c.1780-1850
- Leahy, Patrick, d. 1875
- Leahy, Thomas
- Leahy, Tim, b.1927
- Leahy family
- Leake, William Martin, 1777-1860
- Leamy, Edmund, 1848-1904
- Leask, Harold Graham, 1882-1964
- Leask, Harold Graham, fl. 1923-1949
- Leask, Robert, c.1879-
- Leathem, John, fl.1942
- Leavy, Lorcan
- Leavy family
- Le Bas, Albert, 1928-1972
- Le Blond, Elizabeth, 1860-1934
- Le Botiller, Thomas, fl. 1419
- Le Brocquy, Louis, 1916-
- Le Brocquy, Louis, 1916-2012
- Le Brocquy, Melanie, 1919-
- le Brun family
- Lecky, Frederick Beauchamp, 1858-1928
- Lecky, John Rupert Frederick, 1885-1915
- Lecky, William Edward Hartpole, 1838-1903
- Lecky family
- Le Clerc, Jean, 1657-1736
- Le Clerc, Percy, 1914-2002
- Leddin family
- Ledlie, James Hewitt, 1832-1882
- Ledlie, Margaret Eileen, 1902-1980
- Ledrede, Richard, OFM, bishop, d. c.1361
- Ledsam, Jeremiah, 1805-1888
- Ledwich, Edward, 1739-1823
- Ledwidge, Francis, 1887-1917
- Ledwidge, Francis Edward, 1887-1917
- Lee, (né Fiott), John, 1783-1866
- Lee, Edward, JP, 1853-1927
- Lee, Elizabeth M. Magdalen, 1875-1952
- Lee, John (né Fiott), 1783-1866
- Lee, John, d.1915
- Lee, Joseph, 1942-
- Lee, Joseph Bagnall, ?1888/89-1915
- Lee, Miseon,
- Lee, Philomena
- Lee, Robert, d.1797
- Lee, Robert E., 1807–1870
- Lee, Robert Ernest, ?1880/18-1918
- Lee, Seán
- Lee, Thomas, 1551/2–1601
- Lee, Thomas, d. 1601
- Leebody, Mary Isabella, d.1911
- Leech, James, fl. 1763-1785
- Leech, Sarah, 1809- c. 1830
- Leech, William, 1881-1968
- Leech family
- Lee family
- Leen, Edward
- Leeper, Alexander Wigram Allen, 1887-1935
- Lees, Colin, 1952-
- Lees-Milne, James, 1908-1997
- Lees family
- Leeson, John, d.1798
- Leeson, Joseph, 1st earl of Milltown, 1701-1783
- Leeson, Joseph, 1st earl of Milltown, c.1701-1783
- Leeson, Margaret, 1727-1797
- Leeson family
- Leeson family, earls of Milltown
- Leet, William Knox, V.C., d. 1898
- Le Fanu, Alicia Sheridan, 1753?-1817
- Le Fanu, Joseph Thomas Sheridan, 1814-1873
- Le Fanu, Joseph Thomas Sheridan, 1814–73
- Le Fanu, Joseph Thomas Sheridan, 1814–1873
- Le Fanu, William Richard, 1816-
- Le Fanu, William Richard, 1816-1894
- Le Fanu, William Richard, 1816–1894
- Le Fanu family
- Lefroy, Anthony O'Grady, 1816-1897
- Lefroy, Thomas Langlois, 1776-1869
- Lefroy, Thomas Langlois, 1776–1869
- Lefroy family
- Legat, Hugh, fl. 1400
- Legeay, Jean Laurent, 1710-1786
- Legge, Hector (1901-1994)
- Legge, Mary Dominica, 1905-1986
- Legge, Robert, fl. 1580
- Leggett, Thomas, b.1939
- Legras, Charles, 1872-19.?
- Lehman, James H.,
- Lehmann, Paul, 1884-1964
- Leif Ericson, c. 970-c. 1020
- Leigh-White, Arethusa Flora Gartside (née Hawker), 1890-post 1952
- Leigh-White family
- Leighton, Robert
- Leinster, Dukes of, see FitzGerald family, dukes of Leinster
- Leitch, Maurice, 1933-
- Leiv Eiriksson
- Le Jau, Francis, fl. 1704
- Leland, Thomas, 1722-1785
- Leman, Jules, d. 1880
- Leman, Père, 1826-1880
- Lemass, Seán, 1899-1971
- Lemass, Seán, 1899–1971 : Boland, Gerald, 1885-1973
- Lemass, Seán Francis, 1899-1971
- Lemass, Seán Francis, 1899-1971,
- Lemass, Seán Francis, 1899-1971
- Lemon, William 1837-1897
- Lemp, Fritz-Julius, 1913-1941
- Lenaghan, family
- Lendrum, Alan Cane, MC, RM, c.1882-1920
- Lenehan, John F.
- Lenehan family
- Lenihan, Brian, 1959-2011
- Lenihan, Brian Joseph, 1930-1995
- Lenihan, Maurice, 1811-1895
- Lenihan, Maurice, 1811–1895
- Lenihan, Tom, 1905-1990
- Lenin, Vladimir Ilich, 1870-1924
- Leniston, Thomas, "Blunt", fl.1910
- Lennon,. George, 1900-1991
- Lennon, Colm
- Lennon, James, 1880-1958
- Lennon, John Ono, 1940-1980
- Lennon, P.J.
- Lennon, Patrick, 1841-1901
- Lennon, Patrick, d. 1847
- Lennon, Patrick, fl. 1867
- Lennon, Paul O.Carm, 1936-2003
- Lennon, `Paul O'Carm, 1936-2003
- Lennon family
- Lennox, Caroline
- Lennox, Charles, 2nd duke of Richmond, 2nd duke of Lennox, and duke of Aubigny in the French nobility, 1701–1750
- Lennox, Charles, 3rd duke of Richmond and Lennox, 1735-1806
- Lennox, Emily
- Lennox, Georgina, Lady, 1795-1891
- Lennox, Sarah
- Lennox family
- Le Notre, André, 1613-1700
- Lenox-Conyngham, Mary Anne Grace Louisa, viscountess Doneraile, 1836-1907
- Lenox-Conyngham, Mary Anne Grace Louisa, viscountess Doneraile, fl. 1851-1907
- Lenox-Conyngham, Melosina, d.2011
- Lenox-Conyngham family
- Lenthall, 1591–1662
- Lentin, Louis, 1933-2014
- Leo I, pope and saint, d. 461
- Leonard, Hugh, 1926-
- Leonard, John, Revd.
- Leonard, John Patrick, 1814-1889
- Leonard, Nora T. Goonane, 1913-2007
- Leonard, Patrick, 1821-1873
- Leonard, Saint
- Leonard family
- Leonardo da Vinci, 1452-1519
- Leopold I, king of Belgium, 1790-1865
- Leopold Joseph Charles, Duke of Lorraine, 1679-1729
- Leopold V, archduke of Austria, 1586-1632
- Leo X, pope, 1475-1521
- Leo XIII, Pope, 1810-1903
- Leo XIII, pope, 1810-1903
- Leo XIII, Pope, d. 1903
- Le Pen, Jean-Marie, 1928-
- le Poer, William, d. 1316?
- Le Poer family
- Lepper, John Heron, 1878-1952
- Le Queux, William Tufnell, 1864–1927
- Le Rous, Hugh, bishop of Ossary, ? - 1218
- Lervitas, Max, 1915-2018
- Leslie, Anita. 1914-1985
- Leslie, Charles, 1650-1722
- Leslie, Charles Henry, fl. 1793-1805
- Leslie, Charles Powell, fl. 1800-1841
- Leslie, Charles Powell, III, ?1821 – 26 June ?1871
- Leslie, Desmond, 1921-2001
- Leslie, James Blennerhassett, 1865-1952
- Leslie, John, bishop, d. 1691
- Leslie, John, Bishop of Clogher, 1571-1671
- Leslie, John, d.1671
- Leslie, John Randolph (Shane), 1885–1971
- Leslie, John Randolph, Sir, 'Shane', 1885-1971
- Leslie, Léonie Blanche, Lady, 1857-1943
- Leslie, Mary Anne (née McGarrigle), c.1847-c.1909
- Leslie, Mary Isobel (‘Temple Lane’), 1899-1978
- Leslie, Rev. William, 1680-1760
- Leslie, Shane, see Leslie, John Randolph (Shane), 1885–1971
- Leslie, Thomas Edward Cliffe, 1826-1882
- Leslie, William, 1751-1777
- Leslie, William, Revd, 1680-1760
- Leslie family
- Lester, Sean, 1888-1959
- Lester, Seán (John Ernest), 1888-1959
- Lester, Seán, 1888-1959
- Lester, Seán, 1888-1959,
- Lett, Barbara, 1777-1867
- Lett, Barbara, fl. 1798
- Lett, Henry William, 1836-1920
- Letts, Winifred Mabel, 1882-1972
- Letts, Winifred Mary, 1882 - 1972
- Letts, Winifred Mary, 1882-1972
- Letts, Winifred Mary, 1882–1972
- Leufer family
- Lever, Charles (1806-1872)
Carleton, William (1794-1869)
Archdeacon, Matthew (1798–1853)
Brodigan, Thomas (~1829-~1900)
- Lever, Charles James, 1806-1872
- Lever, William Hesketh, 1st viscount Leverhulme, 1851-1925
- Leverous, Thomas, bishop of Kildare, 1485×1490-1577
- Levers, William, 1818-
- Leveson, Richard, c.1570-1605
- Leveson-Gower, Granville George, 2nd earl Granville, 1815-1891
- Levin, -, Rabbi
- Levine, June
- Levinge, Godfrey, 1796-1855
- Levinge, Harry Corbyn, c.1828-1896
- Levinge, Richard, Sir
- Levis, John Francis, 1830-1887
- Levitas, Maurice, d. 2001
- Lewald, Fanny
- Lewis, (John) Saunders, 1893-1985
- Lewis, Amos
- Lewis, Cecil Day-, 1904-1972
- Lewis, Clive Staples, 1898-1963
- Lewis, George Cornewall, Sir, 1806-1863
- Lewis, Henry Alexander, 1907-1976
- Lewis, John, 1750-1757
- Lewis, John Frederick, 1805-1876
- Lewis, John Saunders, 1893-1985
- Lewis, John Travers, 1825-1901
- Lewis, Matthew Gregory, 1775-1818
- Lewis, Peter, d. c.1571
- Lewis, Peter, Sir
- Lewis, Peter, Sir, c.1520-1572
- Lewis, Samuel, d. 1856
- Lewis, Samuel, d. 1865
- Lewis, Samuel, d.1865
- Lewis, Samuel, d. 1901
- Lewis, Sir George Cornewall, 1806-1863
- Lewis, Wyndham, 1882-1957
- Lewis family
- Lewy, Ernst, 1881-1966
- Lexinton, Stephen of, c.1198-1258
- Leybourne family
- Leycester, Joseph, fl.1832
- Leynagh, Father Francis, 1651-1750
- Leynagh, Francis, Fr., 1651-1750
- Lhote, André, 1885-1962
- Lhuyd, Edward, 1660-1709
- Liberace, Wladziu Valentino, 1919-1987
- Liddy, James, 1934-
- Liebold, Achim,
- Lightbown, Ronald William, 1932-2021
- Liguori, Alphonsus Maria de’, saint, 1696-1787
- Lilburn, David, b. 1950
- Lilburne, John, 1614-1657, also known as Freeborn John
- Lilburn family
- Lilley, Herbert Robert, 1886-1970
- Lilley family
- Lillie, Beatrice, 1894-1989
- Lillis, James, 1897-1988
- Lillis, Michael
- Lillis, Michael, 1948-2006
- Linch, Edmundo, 1726-
- Lincoln,
- Lincoln, Abraham, 1809-1865
- Lincoln, Abraham 1809-1865
- Lincoln, Mary Todd, 1818-1882
- Lindesay family
- Lindsay, 'Aussie', d.1980
- Lindsay, Charles Dalrymple, bishop, 1760-1846
- Lindsay, Colin, fl.1779-1789
- Lindsay, Godfrey, 1920-
- Lindsay, John, 1789-1870
- Lindsay, Kathleen, née Butler, Lady, fl. 1900
- Lindsay, Maria Georgina, d. 1921
- Lindsay, Mary, d.1921 ; Noble, Bridget, d.1921
- Lindsay, Patrick J., 1914-
- Lindsay family
- Lingard, John, 1771-1851
- Linsley, William, 1804-1885
- Lionel, duke of Clarence, 1338-1368
- Lipsett, Paddy, fl. 1930
- Lipsett, William Alfred, 1886-1915
- Lipsius, Justus, 1547-1606,
- Lisney, Arthur Adrain, 1907-1963
- List, Friedrich, 1789-1846
- Listado, Joseph, fl. 1871
- Lister, (Thomas) Frederick, Sir, 1886/7–1966
- Liston, James Michael, bishop, 1881-1976
- Liston, James Michael, Bishop, 1881-1976
- Liszt, Franz, 1811-1886
- Lithberg, Nils
- little, David Blair, 1809-1843
- Little, George Samuel, d.1857
- Little, James, MP
- Little, Joe, d. 1915
- Little, Patrick John (‘P. J.’), 1884-1963
- Little, William, fl.1916-17
- Livingston, Edmund, fl. 1816-1824
- Livingston, John, 1603–1672
- Livingstone, David, 1813-1873
- Livingstone, Peadar
- Livingstone, Stephen, 1961-
- Livingstone, Stephen, 1961-2004
- Livinus, c. 580-657
- Lloyd, David
- Lloyd, Humphrey, 1800-1881
- Lloyd, J. E, (John Edward), 1861-1947
- Lloyd, J. E. (John Edward), 1861-1947
- Lloyd, John, d. c.1785
- Lloyd, Joseph Henry, 1865-1939
- Lloyd, Maureen (néeGilgun), fl 1930-1962
- Lloyd, Owen, c.1854-1929
- Lloyd, Richard, fl.1780-1783
- Lloyd, Richard, Revd.
- Lloyd, Robert Jones, 1761-
- Lloyd, Robert Jones, 1761-1832
- Lloyd, Susanna (Mrs Meredith), b. 1823
- Lloyd, Sylvester, bishop, d. 1747
- Lloyd, Sylvester, bishop of Waterford and Lismore, d. 1747
- Lloyd, William, 1789-1853
- Lloyd-Jones, John, 1885-1956
- Lloyd family
- Lloyd George, David, 1st earl Lloyd-George of Dwyfor, 1863-1945
- Lloyd George, David, 1863-1945
- Lloyd George, David , 1863-1945
- Llwyd, Humphrey, 1527–1568
- Llwyd, Morgan, 1619-1659
- Llyod, John, fl. 1780
- Llywelyn ab Seisyll, prince of Gwynedd and Deheubarth, d. 1023
- Llywelyn ap Gruffudd, prince of Wales, d. 1282
- Llywelyn ap Iorwerth, prince of Gwynedd, c.1173-1240
- Loach, Ken (Kenneth Charles), 1936-
- Loach, Kenneth, 1936-
- Locke, John, 1632-1704
- Locke, John, 1632-1704,
- Locke, Josef (Joseph McLaughlin), 1917-1999
- Locke family
- Lockwood, John Francis, Sir, 1903-1965
- Lockyer, Norman, Sir, 1836-1920
- Lodge, Richard, Sir, 1855-1936
- Loe, Ian, b.1939
- Loeber, Rolf, 1942-2017
- Loegaire Mac Neill
- Loegaire mac Néill
- Loft, Harry, 1830-1850
- Loftie, William, 1839-1911
- Loftus, Adam, 1st Viscount Loftus of Ely, 1568-1643
- Loftus, Adam, archbishop of Dublin, 1533?-1605
- Loftus, Adam, bishop, 1533?-1605
- Loftus, Dudley, 1618-1695
- Loftus, Henry, 3rd earl of Ely, d.1783
- Loftus, Robert Ponsonby Tottenham, Lord, bishop, d. 1850
- Loftus, Sean Daniel (' Dublin Bay'), 1927-2010
- Loftus family
- Loftus family, earls of Ely
- Logan, Austin, 1951-1995
- Logan, James, 1674-
- Logan, James, 1674-1751
- Logan, James, 1674–1751
- Logan, M. J.
- Logan, Patrick, fl. 1696
- Logan, Thomas, 1777-c.1820
- Logan family
- Logier, Harriet, fl.1910-1934
- Logier, Henry, 1800-1870
- Logier, Johann Bernhard, fl.1796-1843
- Logier, Joseph, c.1855-1922
- Logue, Lionel George,1880–1953
- Logue, Michael, 1840-1924
- Logue, Michael, cardinal, 1840-1924
- Lohan, Mary, b. 1954
- Lomas, Samuel H., 1879-1917
- Lombard, Eugene
- Lombard, Peter, bishop, 1554-1625
- Lombard, Peter, bishop, 1554?-1625
- Lombard, Peter, bishop,1554–1625
- Lombard, Peter, c.1554 - 1625
- Lombard family
- Lombardo, Guillén, 1615-1659
- Londonderry, Frances Anne, 3rd Marchioness, 1800-1865
- Londonderry family
- Lonergan, John, 1947-
- Lonergan, Margaret Philomena, 1931-2008
- Lonergan, Marian Tierney, d.2011
- Lonergan, Mary, 1871-1937
- Long (née Lee), Winifred (Winn), d.2013
- Long, Aubrey Waithman, 1875-1959
- Long, Bertram Raymond, 1890-1962
- Long, Frank, 1919-2003
- Long, Miriam (née Normoyle), d.2018?
- Long, Philip, c.1772-1814
- Long, Walter, First Lord of the Admiralty
- Long, Walter Hume, 1st viscount Long of Wraxall, 1854-1924
- Long, Walter Hume, 1st Viscount Long of Wraxall, 1854-1924
- Longboat, Thomas Charles (Cogwagee), 1887-1949
- Long family
- Longfield, Ada Kathleen, 1899-1987
- Longfield, Cynthia, 1896-1991
- Longfield, John, 1653-1730
- Longfield, John, d.1669
- Longfield, John, fl. 1809-1814
- Longfield, Mountifort, 1802-1884
- Longfield, Richard, Baron Longueville, 1734-1811
- Longfield, Richard, fl.1832
- Longfield, Robert, 1652-1711
- Longfield, Samuel Mountifort, 1802-1884
- Longfield family
- Longford family
- Longley, Michael, 1939-
- Longworth, Maria Theresa, 1833-1881
- Longworth, Theresé, c.1832-1881
- Longworth family
- Lonsdale, John Brownlee, fl. 1900-1918
- Lonsdale, Kathleen, 1903-1971
- Looney, Thomas Davis, 1888-1953
- Lope de Vega, 1562-1635
- Lord, George, 1841-1897
- Lordan, Thomas, fl. 1829-1879
- Lord Audley, 2nd earl of Castlehaven, d. 1631
- Louden, John Claudius, 1783-1843
- Loughlin, Robert Andrew
- Loughlin family
- Loughnane, Brian, d.1920
- Loughnane, Harry, -1920
- Loughnane, Patrick, -1920
- Loughnane, Patrick, d.1920
- Loughran, Bernard J., Rev., 1787-1845
- Loughran, Bernard J., Revd, 1787-1845
- Loughran, Mary, fl. 1880
- Loughrey, Edward, Fr, fl. 1915
- Louis, Joe, 1914-1981
- Louis I, better known as Louis the Pious, King of the Franks, 778-840
- Louis XIV, king of France, 1638-1715
- Louis XV, King of France, 1710-1774
- Louis XVI, king, d. 1793
- Louth, Lord
- Love, Jonet, fl. 1670
- Love, Philip, fl.1925-1962
- Love, Walter D., d.1966
- Loveless, George
- Loveless, James
- Lovell, Francis, Viscount Lovell, c.1457-1488?
- Lover, Samuel, 1797-1868
- Loveridge, Daniel, 1824-1908
- Loveridge, Ellen (Née Alcock), c.1849-1903
- Lovett, Albert, 1944-2000
- Lovett, Ann
- Low, George, fl.1865
- Low, George Bond, fl. 1829
- Lowe, Anne, 1933-201?
- Lowe, Elias Avery, 1879-1969
- Lowe, George, fl. 190
- Lowe, George, fl. 1900
- Lowe, Hinton Edward, 1921-2014
- Lowe, Nathaniel, fl.1769-1786
- Lowe, Robert, 1st viscount Sherbrooke, 1811-1892
- Lowe, W. H. M., (William Henry Muir), 1861-1944
- Lowell, John Russell, 1819-1891
- Lowery, Kathleen, b.1916
- Lowry, Andrew, fl. 1955
- Lowry, James, d. 1855
- Lowry, Michael
- Lowry, Michael, 1953-
- Lowry, Paddy, 1919-2013
- Lowry Corry family
- Lowry family
- Lowth, Thomas, 1819-1890
- Lowther, Gerald, 1590–1660
- Luachra, Mo-Ling, Saint, d. 696
- Luaine
- Lubbock, John, 1834-1913
- Lube, George, fl. 1798
- Luby, Thomas Clarke, 1821-1901
- Luby, Thomas Clarke, 1822-1901
- Luby, Thomas Clarke, d. 1901
- Lucan
- Lucanus, Marcus Annaeus (Lucan), 39-65
- Lucas, A. T.
- Lucas, Charles, 1713-1771
- Lucas, Charles, 1713–1771
- Lucas, Charles, Davis, V.C., 1834-1914
- Lucas, Charles Davis, 1834-1914
- Lucas, Cuthbert Henry Tindall, 1879-1956
- Lucas, Cuthbert Henry Tindall, 1879-1958
- Lucas, Frederick, 1812-1855
- Lucas, Frederick, 1812–1855
- Lucas, John, fl. 1699-1741
- Lucas, John, V.C., 1823-1892
- Lucas, Leslie W., 1919-2003
- Lucas-Clements, family ; Mahon, family
- Lucas-Clements, Theophilus, 1802-1852
- Lucas family
- Lucey, Cornelius, 1902-1982, catholic bishop of Cork
- Lucian of Samosata, c125-c180
- Lucien Millevoye, Lucien
- Luckombe, Philip, bap. 1730, d. 1803
- Luddy, Maria
- Luddy, Maria, fl. 2000
- Ludendorff, Erich Friedrich Wilhelm, 1865-1937
- Ludgate, Percy E., 1883-1922
- Ludlow, Edmund, 1616/17-1692
- Ludovisi, Ludovico, Cardinal, 1595-1632
- Luffe, John, d. 1658x9
- Lugaid Mac Con
- Lugard, H.W., Lt-Col., fl.1855-1858
- Lugh
- Lugh, Irish deity
- Lugh, Irish mythical deity
- Lukasiewicz, Jan, 1878-1956
- Luke, Gerard, 1st viscount Lake of Delhi, d. 1808
- Luke, John, 1906-1975
- Lumiere, Auguste, 1862-1954
- Lumiere, Louis, 1864-1948
- Lumley, Renee, 1925-2012
- Lumsden, John, Sir, 1869-1944
- Lundy, Derek, 1946-
- Lundy, Robert
- Lundy, Robert, d. before 1717
- Lundy, William (Billy), 1890-
- Lundy family
- Lundy family,
- Lunell, Peter, c.1652-1720
- Lunell family
- Lunny, Martha, 1902-1923
- Lunny, Sean, 1921-2011
- Lusby family
- Luther, Martin , 1483-1546
- Luther, Martin, 1483-1546
- Luttingus of Lindesfarne ?7th century
- Lutton, Samuel C., 1916-2005
- Luttrell, Thomas, M.P., fl.1605-1630
- Lutyens, Edwin Landseer, Sir, 1869-1944
- Lutyens, Edwin Landseer, Sir, 1869–1944
- Luzio, Salvatore, Monsignor, fl.1923
- Lvinas, Emmanuel, 1906-1995
- Lyburn, Eric Frederick St John, 1904-
- Lydgate, John, 1370?-1449x50?
- Lydon, James F., 1928-
- Lydon, James F., 1928-2013
- Lydon, James Francis, 1928-2013
- Lydon, John, 1956-
- Lydon, John, d.1881
- Lydon, Martin, d.1881
- Lydon, Patrick Joseph, 1950-2022
- Lye, John (d. 1612)
- Lye, John, d. 1612
- Lyle, James, 1788-1874
- Lyly, John, 1554?-1606
- Lyn, Kathleen, 1874-1955
- Lynam, Patrick John, 1853-1912
- Lynass, Benjamin, fl.1842
- Lynch, Annie, fl.1910-1965
- Lynch, Arthur, 1861-1934
- Lynch, Brendan, 1937-
- Lynch, Bríd, b.1916
- Lynch, David, b.1836
- Lynch, Diarmuid, 1878–1950
- Lynch, Dominick (1754-1825)
- Lynch, Edward, fl. 1796-1841
- Lynch, Elias, 1897-1967
- Lynch, Eliza Alicia, 1834-1886
- Lynch, Eliza Alicia, 1835-1886
- Lynch, family
- Lynch, Fionán, 1889-1966
- Lynch, George, b. 1868, d. c 1910
- Lynch, Germyn, fl.1441-1483
- Lynch, Gilbert, 1892-1969
- Lynch, Hannah, 1859-1904
- Lynch, Hannah, 1862-1904
- Lynch, Hannah, 1862–1904
- Lynch, Henry, d.1691
- Lynch, Henry, fl. 1600-1640
- Lynch, Henry, fl. 1605-1673
- Lynch, Jack, 1917-1999
- Lynch, James fitz Stephen, d. c.1519
- Lynch, John, 1873-1955
- Lynch, John, archdeacon of Tuam
- Lynch, John, c.1599–1677
- Lynch, John, c.1599–1677
- Lynch, John, c.1599–1677 ; O' Mahony, Conor, 1594–1656
- Lynch, John, d. in or after 1677
- Lynch, John, Revd.
- Lynch, John Joseph, 1816-1888
- Lynch, John Roy, 1847-1939
- Lynch, Kevin, 1956-1981
- Lynch, Liam (William Fanaghan), 1893-1923
- Lynch, Liam, 1893-1923
- Lynch, Mary Concepta (Lilly) OP, 1874-1939
- Lynch, Michael, 1946-
- Lynch, Patricia, 1894-1972
- Lynch, Patricia, 1898-1972
- Lynch, Patricia Nora, 1894-1972
- Lynch, Patricio, 1824-1886
- Lynch, Patrick ('Paddy'), 1917-2001
- Lynch, Patrick, 1754-1818
- Lynch, Patrick, 1756?-1838
- Lynch, Patrick, 1817-1882
- Lynch, Patrick, 1917-
- Lynch, Patrick, 1917-2001
- Lynch, Patrick, d. 1838
- Lynch, Patrick, KC
- Lynch, Patrick Joseph, 1867-1944
- Lynch, Patrick Neison (Neisen, Neeson, Niessen), 1817–1882
- Lynch, Peter, fl.1524-1554
- Lynch, Roebuck, fl. 1650s
- Lynch, Sean, b. 1978
- Lynch, Thomas
- Lynch, Thomas, 1922-2005
- Lynch, Thomas 1736-1814
- Lynch, Walter, 1593?-1663
- Lynch, Walter, bishop, 1593?-1663
- Lynch, Walter, Bishop, 1593?–1663
- Lynch, Walter, bishop, d. 1663
- Lynch, Walter, d. 1663
- Lynch, Walter, fl. 1655
- Lynch Blosse, Robert, Sir, fl. 1815
- Lynch brothers
- Lynchehaun, James, 1858/60–1937/46?
- Lynchehaun, Margaret (Peggy) (née McIntyre), c.1874-1960
- Lynch family
- Lynd, Robert, 1879-1949
- Lynd, Robert Wilson, 1879-1949
- Lyne, John, 1870-1953
- Lynegar, Charles, fl. 1727
- Lyness, Archie, 1886-post 1918
- Lyness, Thomas, c.1893-post 1918
- Lyness, Wright, 1874-post 1902
- Lynn, Christopher John, b.1946
- Lynn, John, 1797/98-post 1838
- Lynn, John, d.1864
- Lynn, John, fl. 1815-1842
- Lynn, Kathleen, 1874-1955
- Lynn, Kathleen, 1874-1955 ; ffrench-Mullen, Madeleine,1880-1944
- Lynn, Kathleen, 1874–1955
- Lynn, Lisa (née Fischer), c.1925-1947; Swan family
- Lynn, Samuel Ferres, d. 1876
- Lynn, William Henry, 1829-1915
- Lynn family
- Lynott, Phil (Philip Parris, ''Phillo'), 1949-1986
- Lynott, Phil, 1949-1986
- Lyon, John
- Lyon, Matthew, 1750-1822
- Lyons, Annie, 1861-1884
- Lyons, Francis Stewart Leland, 1923-1983
- Lyons, Henry J, 1880-1947
- Lyons, Hilary, 1924-
- Lyons, John, 1823-1867
- Lyons, John, 1836-1908
- Lyons, John, c.1837-post 1879
- Lyons, John Benignus, 1922-
- Lyons, John Canon, 1836-1908
- Lyons, John Charles, fl. 1848
- Lyons, John Patrick, (c.1798-1845)
- Lyons, Michael, 1928-2005
- Lyons, Michael J., fl. 1909
- Lyons, Patrick, 1861-1954
- Lyons, Robert Spencer Dyer, 1826-1886
- Lyons, Roisín, d.2017
- Lyons Thornton, Bridget, d. 1987
- Lyons Thornton, Brigid, 1896-1987
- Lysaght, Edward, 1887-1986
- Lysaght, Edward, d. 1809
- Lysaght, Elizabeth Jane
- Lysaght, Francis, fl. 1798
- Lysaght, John
- Lysaght, Moira, d. c.1995
- Lysaght, Patrick Brendan, 1917-2008
- Lysaght, Sidney Royce, d. 1941
- Lysaght, Sidney Royse, 1856-1941
- Lysaght, Sidney Royse, 1856–1941
- Lysaght family
- Lyster, Richard, c.1824/28-1863
- Lyster, Thomas
- Lyte, Henry Churchill Maxwell, 1848-1940
- Lyte, Henry Francis, 1793-1847
- Lythe, Robert, d. c. 1574
- Lythe, Robert, fl. 1556-1574
- Lythe, Robert, fl. 1556-1574 ; Petty, William, Sir ; Speed, John ; Humfrey, John
- Lyttle, Richard
- Lóegaire Mac Neill
- Lóegaire mac Néill, fl. 5th century
- López, Francisco Solano, 1827-1870
- Lúireach, Saint
- M'Allister, George, 1786-1812
- M'Donnell, Robert
- M'Kye, Patrick
- M-----, Jeremiah, Pte, fl.1861-62
- M., Cornelius, fl.1874-1875
- Mac a'Bháird, Aonghus (An Bháird Mór) ?5th century
- MacAdam, James, 1801–1861
- MacAdam, Robert Shipboy
- MacAdam, Robert Shipboy (Irish: Mac Ádhaimh, Roibeárd); 1808–1895
- MacAdam, Robert Shipboy (Mac Ádhaimh, Roibeárd), 1808–1895; Mac Domhnaill, Aodh , 1802-1867
- Macadam, Robert Shipboy, 1808-1895
- MacAdam, Robert Shipboy, 1808-1895
- Mac Adaras, James Dwyer, General, 1838-
- Mac Aedagáin, Gilla na Naem, 15th cent.
- Mac Aingil, Aodh, 1571-1626
- Mac Aingil, Aodh, c.1572-1626
- Mac Aingil, Aodh, c.1572–1626
- Mac Airt, Cormac
- Mac Airt, Seán Breandán, 1918–1959
- Mac Alasdair, Liam, d.2016
- Mac a Liondain, Pádraig, c.1665-1733
- Macalister, R. A. S., 1870-1950
- Macalister, R.A.S., 1870-1950
- Macalister, R. A. S., 1870-c.1950
- Macalister, Robert Alexander Stewart (R.A.S.), 1870-1950
- Macalister, Robert Alexander Stewart, 1870–1950
- Mac Amhlaigh, Dónall, 1926-1989
- MacAmhlaigh, Gus
- Mac Amhlaoibh, Séamus, SJ, 1912-1995
- Mac Amhlaoidh, Feargal, 1943-2023
- Macan, Arthur Jacob, d.1819
- Macan, Thomas, 1717-1795
- Macan, Turner Arthur, 1826-1889
- Mac an Bhaird, Diarmuid
- Mac an Bhaird, Eoghan Ruadh, c.1570-c.1630
- Mac an Bhaird, Fearghal Og, fl. 1550-1616
- Mac an Bhaird, Fearghal Óg, c.1550-c.1630
- Mac an Bhaird, Fearghal Óg, fl.1550-1616
- Mac an Bhaird, Fearghal Óg, fl.1550-1616
- Mac an Bhaird, Laoiseach
- Mac an Bhaird, Seaghan, 1842-1914
- Mac an Bhaird, Uilliam Óg, d. 1576
- Mac an Bháird, Eoghan Ruadh, c.1570-c.1630
- Mac an Bháird, Éamann Conchúr (Edward Cornelius Ward), 1889-1973
- Mac an Chalbhaigh, Pádraig, fl. 1640
- Mac Andaig, Domnall, fl.1872
- Macan family
- Mac an Ghabhann, Faolán na Scéal -1423
- MacAngus, Bell Ann, 1889-1980
- Mac an Leagha, Conla
- Mac an Leagha, Conla, fl. 1496-1512
- Mac an Leagha, Uilliam
- MacAnna, Ferdia, 1955-
- Mac Annaidh, Séamas 1961-
- Mac an Oirchinnigh, Conchubhar (Connor McInerheny)
- Mac an tSagairt, Liam, 1928-2010
- Mac Aodhagáin, Giolla ne Naomh, fl. 1200-1300
- Mac Aodhagáin family
- Mac Aoidh, D'Arcy, 1825-1868
- Mac Aonghus, Art, viscount Iveagh, d. 1629
- Mac Aonghusa, Cathal, 1893-1947
- Mac Aonghusa, Séamus
- MacArdle, David, c.1850-1934
- Macardle, Dorothy, 1889-1958
- Macardle, Dorothy, d. 1958
- Macardle, Dorothy Margaret, 1889-1958
- Macardle, Dorothy Margaret, 1889–1958
- Macartan, Saint, 1st bishop of Clogher, d.505/6
- Macarthur, Malcolm Edward (1945-
- Macarthy, Henry Byron, c.1835-1888
- Macartney, George, 1st earl Macartney, 1737-1806
- Macartney family
- Mac Artáin, Tomas, d. c.1347
- MacAskill, Alexander, fl. 1905
- Mac Asmainn, Ruairí
- Macaulay, Catharine, 1731-1791
- Macaulay, Thomas Babington, 1st baron Macaulay, 1800-1859
- Macauley, Anna Matilda Young, fl. 1888-1934
- MacAuley, Tony
- Macauliffe, Max Arthur, 1841-1913
- Macaura, Gerald Joseph, 1871-1941
- Macaura, Joseph, General, 1871-1941
- MacAvinchey family
- Macay family (of Charapotó)
- Mac Baíth Bandaig, Laidcend, d.661
- Mac Bradaigh family
- Mac Briain, Donnchad
- Mac Bricne, Aodh, 500-588
- MacBride (née Bulfin), Catalina, 1901-1976
- MacBride, (Edith) Maud Gonne, 1866-1953
- MacBride, Anthony, 1866-1942
- MacBride, Francis William, fl.1891-1932
- MacBride, Joe, fl. 1919-1923
- MacBride, John (1865–1916)
- MacBride, John, 1868-1916
- MacBride, Joseph, 1860-1938
- MacBride, Maud Gonne,1866-1953
- MacBride, Maud Gonne, 1866-1953
- MacBride, Seán, 1904-1988
- MacBride family
- Mac Bruaideadha, Conchubhar
- Mac Bruaideadha, Maoilín Óg, d.1602
- Mac Bruaideadha, Maoilín Óg, d.1602 ; McGorman family ; Clann Ghormáin
- Mac Bruaideadha, Maoilín Óg, d.1602 ; O'Brien, Donough, 4th earl of Thomond, d.1624
- Mac Bruaideadha, Tadhg, fl. 1586-1624
- Mac Bruaideadha, Tadhg mac Dáire, 1550?–1625?
- Mac Bruaideadha family
- Mac Brádaigh, Fiachra, 1690-1760
- Mac Brádaigh, Pilib ('Pilib Ministir' 'Parson Brady'), fl. 1700.
- MacBrádaigh, Seán, b. 1932-
- mac Bóchrai, Fintan
- Maccabe, Chris
- MacCabe, Robert Joseph, Fr, 1926-2011
- MacCabe, Ross, fl. 1721
- MacCaghwell, Hugh, see Mac Cathmhaoil (Mac Aingil), Aodh, 1571–1626
- MacCall, Seamus, 1892-1964.
- Mac Cana, Proinsias, 1926-2004
- MacCana, Proinsias, 1926-2004
- Mac Canna, Piaras (Pierse McCan), 1882-1919
- Mac Cartaigh, Diarmaid, d. 1185
- Mac Cartan family
- Mac Carthaigh, Cormac, d.1138
- Mac Carthaigh,Fínghin, Lord of Carbery, 1478-1505
- Mac Carthaigh Riabhach, Fínghean, fl. 1500 ; Nic Ghearailt, Caitlín, d.1506
- MacCarthy, Aidan, 1913-1995
- MacCarthy, B.G. (Bridget Gerard), 1904-1993
- MacCarthy, Callaghan, 3rd earl of Clancarty
- MacCarthy, Charles Joseph Finnan, 1912-1999
- MacCarthy, Con, 1907-post1970
- MacCarthy, Cormac, fl. 1138
- MacCarthy, Donough (Donnchadha), bishop of Cork, d. 1726
- MacCarthy, Donough, 1st earl of Clancarty, 1594-1665
- MacCarthy, Donough, 2nd Viscount Muskerry, 1st earl of Clancarty, 1594-1665
- MacCarthy, Eleanor, Lady, d. after 1525
- MacCarthy, Fineen mac Donal Mac Finin, d.1641
- MacCarthy, Florence, 1761-1810
- MacCarthy, George, 1832–1902
- MacCarthy, Justin, Lord Mountcashel, 1643?-1694
- MacCarthy, Justin, Viscount Mountcashel, c.1643-1694
- MacCarthy, Terence Francis, b.1957
- MacCarthy, Thaddeus, 1455-1492
- MacCarthy, Thomas St. George, 1862-1943
- MacCarthy, Thomas St. George, 1862–1943
- MacCarthy family
- MacCarthy Mór, Charles, fl.c.1770
- MacCarthy of Muskerry clan
- MacCarthy Rabagh, Teige (Thaddeus), bishop of Cork, 1664?-1747
- MacCarthy Reagh, Donal, 1450/60-1531
- MacCarthy Reagh, Florence, 1562?-c.1640
- MacCarthy Reagh, Owen (Irish: Eoghan Mac Carthaigh Riabhach), 1520-1594
- MacCarty, Denis Florence, 1817-1882
- MacCarwell, David, d. 1289
- MacCathmaoil family
- Mac Cathmhaoil (Mac Aingil), Aodh, 1571–1626
- Mac Cathmhaoil, Art, bishop, d. 1432
- Mac Cathmhaoil family
- Mac Cathmhaoils
- MacCaughan family
- Macc Cárrthaigh, Finghín, Auxiliary Bishop of Cork, fl: 1800
- MacCearbhaill, David, bishop, d. 1289
- Mac Cellaig, Flannacán (?-896)
- Mac Cerbaill, Diarmaid, fl. 545
- Mac Cerbaill, Diarmait, c. 560 see Mac Chearbhaill, Diarmaid, c. 560
- Mac Cerbaill, Diarmait, d. 563
- Mac Chearbhaill, Diarmaid, c.560
- MacCinna, Seán, d. 1998
- Mac Cinnéide, Séamus, fl.1770
- MacClancy family
- Mac Coghlan family
- MacCoghlan family
- Mac Coisi, Iorard, d. 1023
- MacCoisse, Irard, d.990
- Mac Coitir, Liam Rua, 1675-1738 ; Mac Domhnaill, Seán Clárach, 1691-1754 ; Ó Murchú, Risteard, fl. 1720
- Mac Coitir, Sir Séamas Óg [Cotter, James], 1689-1720
- Mac Coitir, Séamas, fl. 1731
- Mac Coitir, Séamus Óg, 1689–1720
- MacColla, Alasdair, d. 1647
- Mac Colmáin, Rumann, d. 747
- Mac Coluim, Fionán, 1875-1966
- MacCone family
- Mac Conghail, Muiris
- Mac Conglinne
- Mac Conglinne, Aniér
- Mac Congáil, Nollaig
- Mac Con Iomaire, Liam, 1937-2019
- Mac Conmara, Donncha, Rua, 1715-1810
- MacConmara, Donnchadh 'Rua', c.1715-1810
- Mac Conmara, Donncha Rua, 1715-1810
- MacConmara, Donncha Rua, 1715-1810
- Mac Conmara, Seán, d.1602
- Mac Con Midhe (MacNamee), Giolla Brighde, c.1210-p.1272
- Mac Conraoi, Seán, c.1853-post-1930
- Mac Corbaill, Diarmait, d. 563
- MacCormick, James, fl. 1798
- MacCormick, James, fl. 1798-1799
- Mac Coscair, Liam T. see Cosgrave, William Thomas, 1880-1965
- Mac Cosse Dabráin, Airbertach, d. c.1016
- Mac Costello, Seán
- Mac Craith, Aindrias, pseud. An Mangaire Súgach, 1707 - c.1795
- Mac Craith, Eoghan, fl.c.1650
- Mac Craith, Eóghan, (fl. 1620)
- Mac Craith, Flann mac Eoghain, fl. c. 1614
- Mac Craith, Micheál, SJ, 1872-1946
- Mac Craith, Nioclás , 1923-2018
- Mac Craith, Nioclás, 1923-2018
- Mac Craith, Ruaidhrí
- Mac Craith, Seán, fl.1954
- Mac Creiche, Saint
- Mac Crimthainn, Feidlimid, King of Cashel, d. 820
- MacCrory, Patrick Simon, 1894-1924
- Mac Cruitín, Aindrias, c.1650-1738
- Mac Cruitín, Aodh 'Buí' , c.1680–1755
- Mac Cruitín, Aodh Buí (MacCurtin, Hugh), c.1680–1755
- Mac Cruitín, Aodh Buí, 1680-1755
- Mac Cruitín, Aodh Buí, 1680?-1755
- Mac Cruitín, Aodh Buí, c.1680-1755
- Mac Cruitín, Aodh Buí, c.1680–1755 : Ó Beaglaoich, Conchubhar, fl.1732
- Mac Cruitín, Aodh ‘Buí’ (MacCurtin, Hugh), c.1680–1755)
- Mac Cruitín, Séamus, 1815-1870
- Mac Cuarta, Séamas (Dall), c.1647–1733
- Mac Cuarta, Séamas, c.1650-1733
- Mac Cuarta, Séamas Dall, 1647-1733
- Mac Cuileannáin, Cormac, d. 908
- Mac Cuinneagáin, Conall (Condaí Phroinnseais), 1832-1920
- MacCullagh, James, 1809-1847
- Mac Cumaill, Finn
- Mac Cumhaigh, Art, 1738-1773
- MacCurtain, Margaret
- MacCurtain, Margaret, 1929-2020
- Mac Curtain, Tomás, 1884-1920
- MacCurtain, Tomás, 1884-1920
- MacCurtin, Hugh, 1680?-1755
- Mac Cába, Cathaoir
- Mac Cárrthaigh, Finghín, Auxiliary Bishop of Cork, fl: 1800
- Mac Cártha, Dhoncha, bishop, fl. 1726
- Mac Cárthaigh, Críostóir, ?
- Mac Cárthaigh, Micheál, 1911-1985
- Mac Cárthaigh Mór, Domhnall, -1596
- Mac Cárthaigh Riabhach, Finghin, 1477?-1505
- Mac Cúdaidh, Art, 1715-
- Mac Dermot (Mac Diarmada) family
- MacDermot, Francis Charles ('Frank'), 1886-1975
- MacDermot, Seán, d. 1916
- Mac Dermot family
- MacDermot family
- Mac Dermott, William Robert, 1839-1918
- MacDermott-Hayes, Michael, 1870-1924
- Mac Dermott Roe
- MacDevitt, James, bishop, 1832-1879
- MacDevitt, Philip, bishop of Derry, ?1710/1719/1724-1797
- Mac Diarmada (MacDermott), Seán, 1883–1916
- Mac Diarmada (McDermott), Seán, 1883-1916
- Mac Diarmada, Brian, fl. 1580s
- Mac Diarmada, Conchubhar Óg, fl. 1595-1602 ; Mac an Bhaird, Fearghal Óg
- Mac Diarmada, Domhnall, 1889-1995
- Mac Diarmada, Ruaidhrí
- Mac Diarmada, Seán, (McDermott, Seán), 1883-1916
- MacDiarmada, Seán, 1883-1916
- Mac Diarmada, Seán, 1884-1916
- Mac Diarmada, Tom Pheaidí, 1909-2001
- Mac Diarmada family
- Mac Domhnaill (McDonnell, MacDonald, MacColla) Alasdair (Alexander), d. 1647
- Mac Domhnaill (McDonnell, MacDonald, MacColla) Ragnall (Randoll)
- Mac Domhnaill (McDonnell, MacDonald, Macgilespik), Col Ciotach (Colkitto), 1570–1647
- Mac Domhnaill, Alasdar, d. 1577
- MacDomhnaill, Aodh (Hugh McDonnell), 1802-1867
- Mac Domhnaill, Aodh, 1802-1867
- Mac Domhnaill, Aodh Buidhe, 1546-1619
- Mac Domhnaill, Eoin, Lord of the Isles, d.1503
- Mac Domhnaill, Máel Sechnaill Mór (c.948-1022)
- Mac Domhnaill, Raghnall Dall, fl. c. 1681-c. 1715)
- Mac Domhnaill, Seán Clárach
- Mac Domhnaill, Seán Clárach, 1691-1754
- Mac Domhnaill, Seán Clárach, 1691–1754
- Mac Domhnaill, Somhairle, c. 1580-1632
- Mac Domhnaill, Somhairle, fl.1630
- Mac Domhnaill, Tomás, 1885-1938
- MacDomnaill family
- MacDonagh (Mac Donnchaid), Tomaltach, ?-1397
- MacDonagh, Andrew, 1738-
- MacDonagh, Chris, 1905-1960
- MacDonagh, Donagh, 1912–1968
- MacDonagh, John 1880-1961
- MacDonagh, Michael, O.P., d. 1746
- MacDonagh, Oliver Ormond Gerard, 1924-2002
- MacDonagh, Terence, d. 1713
- MacDonagh, Thomas, 1878-1916
- MacDonagh, Thomas 1878-1916
- Mac Donagh family
- MacDonagh family
- Macdonald (or McDaniel), Daniel, 1820-1853
- MacDonald, (James) Ramsay, 1866–1937
- Macdonald, Daniel, 1820-1853
- Macdonald, Daniel, 1821-1853
- MacDonald, Etienne Jacques Joseph Alexandre, Duc de Tarente, Marshal, 1765-1840
- Macdonald, John Alexander, Sir, 1815-1891
- MacDonald, John J., fl. 1885
- MacDonald, Malcolm John, 1901-1981
- MacDonald, Malcolm John, 1901–1981
- MacDonald, Terence, 1810-1874
- MacDonald clan
- MacDonald family
- MacDonald Hills, Gordon, 1826-1895
- Mac Donncha, Pádraic, c.1881-post-1937
- MacDonnel family
- MacDonnell, Agnes, 1842?–1923
- MacDonnell, Alexander, 3rd earl of Antrim
- MacDonnell, Anthony Patrick, 1st baron MacDonnell, 1844-1925
- MacDonnell, Antonia Elizabeth, fl.1922-1925
- MacDonnell, Antony Patrick, 1844-1925
- MacDonnell, Catherine
- MacDonnell, Enrique Reynaldo, 1753-1823
- MacDonnell, Finola (Lola), d.2007
- MacDonnell, Francis, 1856-1702
- Macdonnell, Francis, OFM
- MacDonnell, Henry, d. 1823
- MacDonnell, James, 1763-1845
- MacDonnell, James, Dr., 1796-1892
- MacDonnell, James Joseph, 1766–c.1848
- MacDonnell, James Joseph, d. 1849
- Macdonnell, John Joseph, 1811-1900
- MacDonnell, Joseph Patrick
- MacDonnell, Randal, 2nd earl & 1st marquis of Antrim, 1609-1683
- MacDonnell, Randal Arranagh, 1st earl of Antrim, d. 1636
- MacDonnell, Sorley Boy, 1505?-1590
- MacDonnell family
- Macdonnell family
- MacDonnell family, earls of Antrim
- MacDonnell [née O'Neill], Rose, marchioness of Antrim, 1631-1695
- Macdonough, Thomas, 1783-1825
- Macdougald, Suzanne,
- Mac Duinnshléibhe, Eóghan "Ultach", d.1586
- Mac Dónaill, Seán Clarach, 1691-1754
- Mac Dúnlainge, Cearbhal, 842-888
- MacEgan, Augustine, fl. 1629
- Mac Egan, Boethius, OFM, d. 1650
- MacEgan, Darius Joseph 'The MacEgan', 1856-1939
- Mac Egan, Darius Joseph, 1856-1939
- Mac Egan, Marie O'Beirne, 1874-1961
- MacEgan, Stephen, bishop, d. 1756
- MacEgan family
- Mac Egan family
- MacEntee, Seán
- MacEntee, Seán, 1889-1984
- MacEntee, Seán Francis, 1889-1984
- Mac Eochadha, Tomás mac Ruaidhrí
- Mac Eochaidh (Keogh/Kehoe) family
- Mac Eochaidh, Tadhg, bishop, d. 1687
- Mac Eoin, Gearóid
- Mac Eoin, Gearóid S., 1929-
- Mac Eoin, Seán (McKeon), 1893-1973
- Mac Eoin, Seán, 1893-1973
- MacEoin, Seán, 1893-1973
- Mac Eoin, Seán, 1893–1973
- MacEoin, Séamus P., d.1993
- Mac Evilly, James, d. 1921
- MacEvilly, John, bishop, 1818-1902
- MacEvilly family
- MacEvoy, James, 1943-2010
- MacFadden, James, d. 1917
- Mac Fheórais, Maighiú (de Bermingham, Matthew), fl 1400
- Mac Fhinn, Pádraig Eric, 1895-1987
- Mac Fhionnlaoich (McGinley), P.T. (Cú Uladh), 1856-1942
- Mac Fhir Bhisigh, Dubhaltach, fl. 1643 – January 1671
- Mac Fhirbhisigh, Dubhaltach Óg, c.1600-1671
- Mac Fhirbhisigh, Dubhaltach Óg, c.1600–1671
- Mac Fhir Bhisigh, Ghiolla Íosa Mór, c. 1397-1418
- Mac Fhir Bhisigh, Giolla Íosa, d. 1418
- Mac Fhirbhisigh family
- Mac Fhlannchadha family
- Macfie, Scott (Robert Andrew), 1868-1935
- Mac Firbhisigh, Dubhaltach Óg, c.1600-71
- Mac Firbhisigh, Giolla Íosa Mór fl. c.1392-c.1417
- Mac Firbhisigh family
- MacFirbis, Duald, 1585-1670
- Mac Firbis, Duald, 1585-1670
- MacFlynn, Edward James, 1914-2006
- Mac Gabhann, Fiachra, 1971-2018
- Mac Gabhann, Micheál (‘Micí’) (MacGowan, Michael) (1865–1948)
- Mac Gabhann, Mici, 1865-1948
- Mac Gamhna, Pádraig, 1895-1943
- MacGamhna, Pádraig, 1895-1943
- Mac Garrchon, Nathí, 5th cent?
- MacGarry, Maeve
- MacGarry, Milo
- MacGauran, Edmund, bishop, c.1548-1593
- MacGeagh, John, architect
- Mac Gearailt,Muiris mac an Ridire, -1642
- Mac Gearailt, Phiaras, fl. 1785
- Mac Gearailt, Piaras, 1709-c.1792
- Mac Gearailt, Piaras, b. c 1709, d. 1795
- Mac Gearailt, Piaras, c. 1709-1791
- Mac Gearailt, Piaras, c.1709-1795
- Mac Gearailt, Piaras, c.1709-c.1792
- Mac Gearailt, Seán
- MacGeoghegan, Anthony, 1598-1664
- Macgeoghegan, Conall
- MacGeoghegan, Conall, fl. 1627
- MacGeoghegan, James, d. 1764
- MacGeoghegan family
- MacGeough Bond family
- MacGhee, Theobald, c1655-1727
- MacGhilleathain, Calum Iain, 1915-1960
- MacGill, Patrick, 1890-1963
- MacGill, Patrick, 1890-1963
- MacGill, Patrick, 1891-1963
- MacGinley, Thomas, 1830-1887
- Mac Giolla, Tomás, 1924-2010
- Mac Giolla Bhríde (Bhrighde), Niall, 1861-1942
- Mac Giolla Chiolle, Séamas, 1759-1828
- Mac Giolla Choille, Breandán, 1920-2006
- Mac Giolla Choille, Séamas, c.1759-1828
- Mac Giolla Chomhaill, Anraí
- Mac Giolla Chomhghaill, Séamus, 1836? - 1917
- Mac Giolla Iasachta, Éamonn
- Mac Giollapadraig family
- MacGiollapadraig family
- Mac Giolla Phádraig, Brian, 1580-1652
- Mac Giolla Phádraig, Fínghin, chief of Ossory, d.1613
- Mac Giolla Phádraig, Iaróm , 1877-1910 :
- Mac Giolla Phádraig family
- Mac Giolla Riabhaigh, Conchobhar, fl. 1589 ; O'Brien, Donough, 4th earl of Thomond, d.1624
- Mac Giollarnaith, Sean, 1880-1970
- Mac Giollarnáth (Mac Giolla An Átha; Forde), Seán, 1880–1970
- Mac Giollarnáth, Seán, 1880-1970
- Mac Giolla Íosa, William H., 1874-1953
- Mac Giolla íosa, William H., 1874-1953
- MacGonigal, Maurice, 1900-1979
- Mac Gorain, Riobard
- MacGorman family
- MacGougan, Jack, 1913-1998
- MacGough family
- Mac Greagóir, Aoidhmín, 1884-1950
- MacGreer, Alan, fl. 1700-1800
- MacGreevy, Patrick Joseph
- MacGreevy, Thomas
- MacGreevy, Thomas, 1893-1967
- MacGregor, James, c.1480-1551
- Mac Grianna, Seosamh, 1900-90
- Mac Grianna, Seosamh, 1900-1990
- Mac Grianna, Seosamh, 1900–1990
- Mac Grianna, Seosamh, 1901-1990
- Mac Griogair, Seumas, Déan Lios Mòr, fl. 1500-1550
MacGregor, James, Dean of Lismore, fl. 1500-1550
- Mac Griogair, Seumas, Déan Lios Mòr, fl. 1500-1550 MacGregor, James, Dean of Lismore, fl. 1500-1550
- Mac Gréil, Micheál, 1931-
- Mac Gréil, Micheál, 1931-2023
- Mac Gréine, Pádraig, 1900-2007
- MacGurk, Brian, c.1620-1713
- Mac Góráin, Riobard, 1928-2007
- Macha, tutelary goddess
- MacHale, John, 1791–1881, Catholic archbishop of Tuam
- MacHale, John, archbishop of Tuam, 1791-1881
- MacHale, John, archbishop of Tuam, 1791–1881
- MacHale, John, bishop, 1791-1881
- MacHale, Michael J., d. 1887
- Machar, Saint, d. c.540
- MacHenry, Alexander, 1844-1919
- Machiavelli, Niccolò, 1469-1527
- Macintyre, Angus Donald, d. 1994
- MacIntyre, James, 1926-
- Maciver family
- Mack, Eliza, fl. 1851-1901
- Mackay, James Townsend, 1775–1862
- Mackay, Jessie, 1864-1938
- MacKay, William
- Mackay WIlson, James
- MacKechnie, Geoffrey
- Macken, Ita, sister, 1870-1936
- Macken, Mary, fl.1908-1949
- Macken, Peadar, 1878-1916
- Macken, Peter Paul, 1878-1916
- Macken, Simon, c.1760-c.1830
- Macken, Walter, 1915-1967
- Macken, Walter, 1915–1967
- MacKenna, John (Juan), 1771–1814
- Mackenna, John, 1771-1814
- MacKenna, John, 1952-
- MacKenna, Stephen, 1872-1934
- MacKenna family
- MacKenraghty, Maurice, d. 1585
- MacKenzie, Alexander, 1763-1844
- Mackenzie, John, 1646/7–1696
- Mackenzie, John, 1844-1917
- Mackenzie, Murdoch, c.1712-1797
- MacKenzie, Roderick, fl. 1941
- MacKeogh family
- MacKernan family
- Mackesy, William, fl.17801820
- Mackey, John, c.1800-1891
- Mackey, Noreen
- Mackey, Patrick, fl. 1798-1857
- Mackie, Kathleen, 1899-1996
- Mackie, Kathleen Isabella, 1899-
- Mackie family
- Mac Kiernan, Francis J., Bishop, 1926-2005
- MacKiernan, Francis J., bishop, 1926-2006
- MacKillop, Mary Helen, 1842-1909
- Mackinder, Halford John, Sir, 1861-1947
- Mackintosh, James, Sir, 1765-1832
- Mackle, Joe, d.2008
- Mackle family
- Macklin, Charles, 1699?-1797
- Macklin, Charles, d.1797
- Macklin, Charles, d. 1797
- Macklin, Charles 1699-1797
- Macklin, Mary, c.1856-c.1935
- MacKnight, Thomas
- Macky, John, d.1809
- Maclaine, James, 1724-1750
- MacLaughlin family
- MacLaverty, Bernard, 1942-
- Mac Laverty, John, 1874-1950
- Maclay, William
- Maclean, Calum Iain, 1915-1960
- Maclean, John, 1879-1923
- MacLean, Roderick, fl. 1549
- MacLean, Sorley, 1911-1996
- MacLean, Sorley [Somhairle MacGill-Eain], 1911–1996
- Maclean clan
- Maclean family
- Mac Liag, Muircheartach MacCu Ceartach, d.1006/15
- MacLiammóir, Micheál (Alfred Lee Willmore), 1899–1978
- MacLiammóir, Micheál, 1899-1978
- MacLiammóir, MÍcheál, 1899-1978
- Mac Liammóir, MÍcheál, 1899-1978
- Maclise, Daniel, 1806-70
- Maclise, Daniel, 1806-1870
- MacLise, Daniel, 1806-1870
- Maclise, Daniel 1806-1870
- MacLochlainn, Eoin
- Mac Lochlainn, Niall, fl. 1113
- MacLochlainn, Niall, fl. 1113
- Mac Lochlainn, Seán D., 1897-1957
- Mac Lochlainn family
- Mac Loinsigh, Peadar, Fr
- Mac Luigthig, Corc, fl. 350
- MacLysaght, Edward
- MacLysaght, Edward A., 1887-1986
- MacLysaght, Edward A., 1887–1986
- MacLysaght, Edward Anthony Edgeworth (Mac Giolla Iasachta, Éamonn), 1887-1986
- Mac Lénéni, Colmán, d. 606
- Mac Maghnusa, Cathal óg, d. 1498
- Mac Maghnusa, Cathal óg, d.1498
- MacMahon, Aodh Rua, d. 1590
- MacMahon, Bernard, d. 1747
- MacMahon, Brian, Sir
- MacMahon, Bryan, 1909-1998
- MacMahon, Bryan,1909-1998
- MacMahon, Eimhear, bishop, d. 1560
- MacMahon, Francis, d. 1782
- MacMahon, Heber, bishop, c.1600-1650
- Macmahon, Heber, bishop, c.1600-1650
- MacMahon, Honora, d.1893
- MacMahon, Hugh, d. 1737
- MacMahon, Hugh Og
- Mac Mahon, Marie Edme Patrice Maurice, Marshal of France, Duke of Magenta, President of the Republic, 1803-1893
- MacMahon, Mary (Máire Ruadh), c.1615-1686
- MacMahon, Mary, Lady
- MacMahon, Michael Peter, bishop, d. 1807
- MacMahon, Patrick, bishop, d. 1836
- MacMahon, Peter, d. 1807
- MacMahon, Ross, d. 1748
- MacMahon, Seán Michael, 1893-1955
- MacMahon, Teige
- MacMahon, Teige, (Thady McMahon) fl.181?-1880
- MacMahon, Terence, fl. 1728
- MacMahon family
- MacMahons
- Macmanaway, James Godfrey, 1898-1951
- MacManus, Emily Elvira Primrose, 1886-1978
- MacManus, Francis, 1909-1965
- Mac Manus, Gerard
- MacManus, Lottie, 1853-1944
- MacManus, M. J., d. 1951
- MacManus, Patrick, 1864-1929
- MacManus, Seamus, 1868-1960
- Mac Manus, Seumas, 1869-1960
- MacManus, Terence Bellew, 1811x12-1861
- MacManus Terence Bellew, 1811x12 1861
- Mac Maol Íosa, Nicholas, bishop, d. 1303
- Mac Maoláin, Breandán
- Mac Marcais, Aindrias ; Mac an Bhaird, Fearghal Óg, fl.1550-1616 ; Ó Gnímh, Fear Flatha, fl.1580-1640 ; Ó hEódhasa, Eochaidh, c.1560-1612
- MacMaster, Norma
- Mac Mathúna, Aindrias, fl.1770
- Mac Mathúna, Diarmuid, d. c.1996
- Mac Mathúna, Seán, 1876-1949
- Mac Mathúna, Séamus ; Ó Corráin, Ailbhe
- MacMeehan, Archibald, 1862-1933
- Mac Mhuirich, Eòin, fl. c. 1520?
- Mac Mhurchaidh, Séamus Mór, c. 1720-1750
- MacMillan, James, 1959-
- Macmillan, Maurice Harold, 1st earl of Stockton, 1894-1986
- Mac Mongaig, Fachta, bishop, fl. 6th cent.
- Mac Muireadhaigh, Cathal
- Mac Muiris, Tomás, -1630
- Mac Murchada (MacMurrough), Diarmait (Dermot), d. 1171
- Macmurchada, Diarmaid, king of Leinster, 1110?-1171
- Mac Murchada, Diarmait (MacMurrough, Dermot), d. 1171
- Mac Murchada, Diarmait, king of Leinster, 1110?-1171
- Mac Murchada, Diarmait, king of Leinster, ?1110-1171
- Mac Murchada, Diarmait, king of Leinster, ?1110-1171 ; Dearbhforgaill
- Mac Murchadha, Diarmaid, c.1110-1171
- Mac Murchadha, Éamonn, 1916-1991
- Mac Murchadha family
- Mac Murchu Caomhanach, Art, 1831-1889
- MacMurray, John, 1737-1793
- MacMurrough (Mac Murchada), Muirchertach, King of Leinster, d. 1282
- MacMurrough family
- MacMurrough Kavanagh (Mac Murchadha Caomhánach), Art Mór, king of Leinster, 1357–1416/17
- MacMurrough Kavanagh, Domhnaill, d. 1632
- Mac Murrough Kavanagh family
- MacMurrough Kavanagh family
- MacNaghtan family
- Macnaghten, Sir William Hay, baronet, 1793–1841
- MacNally, Charles, bishop, 1787-1864
- MacNally, Leonard, d. 1820
- MacNamara, Angela, 1931-
- MacNamara, Brinsley, 1890-1963
- Macnamara, Daniel, 1720-1800
- MacNamara, Donal, fl. 1550
- Macnamara, Donough, 1893-1970
- MacNamara, Eugene, fl. 1846
- Macnamara, Eugene, Revd, d.1852
- MacNamara, Francis, 1800-1873
- MacNamara, Francis, c.1811-c.1868
- Macnamara, Francis, fl. 1837
- MacNamara, George U., 1849-1919
- Macnamara, George Unthank, 1849-1919
- MacNamara, James, d. 1684?
- MacNamara, James, fl. 1817-1820
- Macnamara, John, d. 1996
- MacNamara, John Redmond, fl.1863-1900
- MacNamara, Patrick, d. 1838
- MacNamara, Seán, fl. 1550
- MacNamara, Thomas, 1811-1892
- Macnamara, Thomas, d. 1710
- Macnamara, William, of Droolin, fl. 1846-1851
- Macnamara family
- MacNamara family
- MacNamara femily
- Macnamara Fionn
- MacNamara Riabhach
- MacNeice, Frederick Louis, 1907-1963
- MacNeice, Frederick Louis, 1907–63
- MacNeice, John Frederick, 1866-
- MacNeice, John Frederick, 1866–1942
- MacNeice, John Frederick, fl. 1866
- MacNeice, Louis, 1907-1963
- MacNeice, Louis, see MacNeice, Frederick Louis, 1907-1963
- MacNeice, Louis 1907-1963
- MacNeill, Eoin
- MacNeill, Eoin, 1867-1945
- Macneill, John, Sir, 1793-1880
- MacNeill, John Benjamin, Sir, 1790-1880
- Macneill, John Benjamin, Sir, 1793-1880
- MacNeill, John Benjamin, Sir, 1793-1880
- Macneill, John Benjamin, Sir, 1793–1880
- MacNeill, John Gordon Swift, 1849-1926
- MacNeill, John Gordon Swift, 1849–1926
- Mac Neill, Loegaire
- MacNeill, Máire, 1904-1987
- MacNeill, Máire, d. 1987
- Mac Neill, Uilliam, minister, 1774-1821
- Macnemara, George, d.1760
- MacNeny, family
- MacNeven (MacNevin), William James, 1763–1841
- MacNeven, William James, 1763-1841
- MacNevin, Thomas, 1814-1848
- MacNevin, William James
- Mac Niocaill, Gearóid
- Mac Niocaill, Gearóid, 1932-2004
- Mac Néill, Eoin
- Macomb, Alexander, 1748-1841
- Macoun, John, 1831-1920
- Macpherson, James, 1736-1796
- Macpherson, James, 1736-1796
Macpherson of Cluny, Ewen, 1706-1764
- Macpherson, James, 1736-1796,
- Macpherson, James, 1736–1796
- Mac Philib, Séamas, 1955-2016
- Mac Pháidín, Jack, 1917-2002
- Mac Pháidín, Pádraig, 1892-1980
- Mac Piarais, Pádraic, see Pearse, Patrick Henry, 1879-1916
- Mac Piarais, Pádraig, 1879-1916
- Macquarie, Lachlan, 1761-1824
- MacQuillan family
- MacQuitty, William, 1905-
- Macraith family
- Macready, Cecil Frederick Nevil, Sir, 1862-1946
- Macready, William Charles, 1793-1873
- MacRegol, abbot of Birr, d. 822
- Macreight, Daniel Chambers, 1799-1856
- Macrobius, Ambrosius Theodosius, fl. 399-422
- MacRory, Joseph, cardinal, 1861-1945
- MacRory, Joseph, cardinal, bap. 1861, d. 1945
- Mac Ruairí, Mícheál, 1860-1936
- Mac Ruairí, Éamonn, 1928-2010
- Mac Róich, Fergus
- Mac Róigh, Feargus, 1872-1945
- Mac Seoin, Tomás, 1910-2008
- Mac Seáin, Pádraig, 1895-1981
- Mac Shamhráin, Ailbhe, 1954-2011
- MacSheehy, Bernard
- MacSheehy, Bernard, Capitaine-Adjoint, 1774-1807
- Mac Sleighne, Eoin Baiste, 1638-1712
- Mac Solaidh, Seon, fl. 1720s
- Mac Solaidh, Seon, fl. 1720s ; Ó Neachtain, Seán, c.1640–1729
- Mac Solaidh, Sheón
- Mac Sorley, James, d. 1601
- Mac Sorley clan
- Mac Sparran, James, 1680-1757
- Mac Spealáin, Gearóid, 1904-1975
- Mac Steléne, Dub Dá Thúath
- MacStiofain, Sean, 1928-2001
- Mac Stiofáin, Seán born John Edward Drayton Stephenson, 1928-2001)
- Mac Suibhne
- Mac Suibhne, Domhnall, fl.1640
- Mac Suibhne, Mánus
- MacSweeney, Patrick Morgan, 1873-1935
- MacSweeney, Turloch, c.1818-1916
- MacSweeney, William Jasper ('Jack'), 1899-1942
- MacSweeney family
- MacSweeny (MacSweeney), Cornelius (Conn), before 1887-1955
- MacSwiney, Mary
- MacSwiney, Mary, 1872-1942
- MacSwiney, Mary, 1872-1942
Nic Suibhne, Eithne, c1890-fl1954
- MacSwiney, Mary, 1872-1942 ; De Valera, Éamon, 1882-1975
- MacSwiney, Muriel
- MacSwiney, Muriel, b. 1892
- MacSwiney, Terence, 1878-1920
- MacSwiney, Terence, 1879-1920
- MacSwiney, Terence James, 1879-1920
- Mac Síthigh, Nioclás, 1728-1766
- MacTaghlin family
- Mac Thadhg, Éamonn, 1866-1955
- Mac Thomáis, Eamonn, d. 2002
- Mac Thomáis, Shane, 1968-2014
- Mac Thomáis, Éamonn, 1927-2002
- Mac Toirdhealbhaigh Óig Uí Chonchubhair, Conchubhar, fl 1600
- Mac Torcaill, Ascall Mac Raghnaill, d.1171
- Mac Uibhleáin, Mocheallóc
- Macura, Gerald Joseph, b.1871
- MacVeigh, Andrew, O.F.M., fl. 1686
- MacVeigh, Andrew, OFM, fl. 1686
- MacWhite, Eoin, 1923–1972
- MacWhite, Michael, 1882-1958
- MacWhite, Michael, 1883-1958
- MacWhite, Michael, 1883–1958
- MacWilliam, Seán
- Mac William Burke family
- MacWilliam Burke family
- Mac William Íochtar Burke family
- Mac Ádhaimh, Roibeard (MacAdam, Robert Shipboy), 1808-1895
- Mac Éinrí, Seaghán P., 1862-1930
- Mac Íomhair, Diarmuid, 1905-1983
- Madden, Albert Frederick McCulloch, 1917-
- Madden, Andrew, fl. 1965
- Madden, Bartley, 1890-1927
- Madden, Canon, p.p., 1889-1952
- Madden, d.1877
- Madden, Deirdre, 1960-
- Madden, Dominick, fl. 1810-1837
- Madden, Dominick, fl.1810-1837
- Madden, Edward, 1804-1856
- Madden, Frederic, Sir, 1801-1873
- Madden, John
- Madden, Lyn
- Madden, Michael, b.1910
- Madden, Richard Robert, 1798-1886
- Madden, Samuel, 1686-1765
- Madden, Thomas, More 1838-1902
- Madden family
- Madgett, Nicholas, 1703–1774
- Madigan, Timothy B., 1897-1920
- Maelruan, Saint
- Maeve
- Maeve, Queen
- Maffitt, John Newland, fl. 1850
- Magan, Percy Tilson, fl. 1942
- Magan family
- Magarraghan family
- Magauran, Edmund, archbishop of Armagh
- Magauran, James, bishop, 1771-1829
- Magauran, James, bishop, d. 1829
- Magauran, Thomas, OFM, c.1640-1715
- Magauran family
- Magawly family
- Magee, Alexander, of Islay
- Magee, Catherine (Kate), 1860 -1919
- Magee, Donal, of Islay
- Magee, family
- Magee, Jack, 1914-1993
- Magee, James, -1798
- Magee, James, -1798 (An Gunnadóir Mac Aoidh)
- Magee, James, 1707-1797
- Magee, Jimmy, 1935-
- Magee, Jimmy, b. c 1936
- Magee, John
- Magee, John, 1790-1814
- Magee, John, 1936-
- Magee, John, c.1750-1809
- Magee, Martha Maria (née Stewart), 1752-1846
- Magee, Martha Maria (née Stewart), c.1755-1846
- Magee, Patrick (Pat)
- Magee, William, archbishop of Dublin, 1766-1831
- Magee, William Connor, 1821-1891
- Magee, William Kirkpatrick (‘John Eglinton’), 1868–1961
- Magee, William Kirkpatrick, 1868-1961
- Magennis, Anna, d.1877
- Magennis, Catherine, Countess O'Neill, d.1619
- Magennis, Catherine, d. 1619
- Magennis, family
- Magennis, James, Mick, d. 1986
- Magennis, Peter, 1817-1910
- Magennis, Peter E., 1868-1937
- Magennis, Peter Elias, 1869-1937
- Magennis family (of Iveagh)
- Mag Eochagáin, Conall, fl. 1620-1640
- Mag Eochagáin, Conall ; Mac Fhirbhisigh, Dubhaltach
- Mageoghan family
- Mageoghegan (Mac Eochagáin), Conall fl. 1620–1640
- Mageoghegan, Anthony, bishop, d. 1664
- Mageoghegan family
- Mag Fhionnlaoich, Peadar, 1856-1942, see McGinley, Peter Toner, 1856-1942
- Mag Fhlainn, Seán, 1843-1915
- Magill, Elizabeth, b. 1959
- Magill, Pat, b.192?
- Magill, Robert, 1788-
- Magill, Theodosia, countess of Clanwilliam, 1743-1817
- Magilligan (McGilligan) family
- Maginess, Brian, 1901-1967
- Maginn, Edward, bishop, 1802-1849
- Maginn, Francis, 1861-1918
- Maginn, Owen, 1920-2006
- Maginn, Patrick, Father, 1617-1683
- Maginn, Patrick, Fr, 1617-1683
- Maginn, William, 1794-1842
- Maginni, Denis Joseph, c.1855-1915
- Maginnis, Dominick
- Magliocco family
- Mag Mathghamhna, Brian, †1689
- Magner, Michael, d. 1954
- Magner, Thomas, fl. 1822
- Magner family
- Magnus, Gnaeus, Pompeius, 106 BC- 48 BC
- Magnus Barelegs, d. 1103
- Magnus III, king of Norway, c.1073-1103
- Magnus III Óláfsson (Barelegs), king of Norway, 1073-1103
- Magnus III Óláfsson (Barelegs), king of Norway, 1073-1103
- Magnus Maximus, emperor, d. 388
- Magoffin, James Wiley, 1799-1868
- Magrahe, Donatus
- Magrana, Edmund, fl. 1656
- Magrath, Cornelius, 1736-1760
- Magrath, Miler (Meiler), archbishop of Cashel, c.1522-1622
- Magrath, Miler, 1522-1622
- Magrath family
- Mag Ruaidhrí, Patsaí Dan,
- Magruairk, Francis, O.F.M.
- Magruairk, Francis, OFM
- Mag Shamhradháin
- Maguidhir, Lughaidh, fl.1934-1935
- Maguire (Mág Uidhir), Hugh (Aodh), d.1600
- Maguire (Mág Uidhir), Thomas (Tomás) Óg, 1394–1480
- Maguire, Bill, 1932-2011
- Maguire, Brian
- Maguire, Brian, b. 1951
- Maguire, Brian, fl.1660-1726
- Maguire, Charles Bonaventure, O.F.M., 1768-1833
- Maguire, Charles Bonaventure, OFM, 1768-1833
- Maguire, Connor, 2nd baron of Enniskillen, d. 1645
- Maguire, Constantine, d. 1834
- Maguire, Cuchonnacht, Lord of Fermanagh
- Maguire, Denis, bishop, d. 1798
- Maguire, Dick, 1915-2007
- Maguire, Dominic, bishop, 1646-1707
- Maguire, Doris D.
- Maguire, Edward, canon, 1856-1926
- Maguire, Hugh, 1710-
- Maguire, Hugh, d.1600
- Maguire, Hugh, d. 1600
- Maguire, Hugh, Lord of Fermanagh, d. 1600
- Maguire, Jim, ?
- Maguire, John, d.1923
- Maguire, John Francis
- Maguire, John Francis, 1815-72
- Maguire, John Francis, d. 1872
- Maguire, John Sigismund
- Maguire, Joseph, c.1913-2009
- Maguire, Josephine (née Galvin), d.1937
- Maguire, M. J., d. 1941
- Maguire, Noel, writer in Clogher Record
- Maguire, Patrick, 1961-
- Maguire, Patrick J.
- Maguire, Pauline (née O'Shea), 1920-post 1987
- Maguire, Robert Augustine Joseph, (Michael Taaffe) 1898-1972
- Maguire, Sam, 1877-1927
- Maguire, Sam, 1878-1927
- Maguire, Sean, 1924-2005
- Maguire,Sean, 1924-2005
- Maguire, Theodora Agnes Eleanor (Dora), 1889-1931
- Maguire, Thomas, 1792-1847
- Maguire, Thomas, 1831-1889
- Maguire, Thomas, 1863-1930
- Maguire, Toirdelbach, fl. 1446
- Maguire, Tom, 1892-1993
- Maguire, Tom, 1892-1993 ; Ó Brádaigh, Ruairí
- Maguire, Tom, 1892–1993
- Maguire, W.A. (Bill), FRHS, 1932-2011
- Maguire family
- Maguires
- Mahaffy, John Pentland, Sir, 1839-1919
- Mahaffy, Sir John Pentland, 1839-1919
- Maher, Alan
- Maher, Alice, b. 1956
- Maher, Christopher, 1937-2007
- Maher, Ellen (Mother Mary Cecilia), 1799-1878
- Maher, James, Revd.
- Maher, Mary Cecilia, 1799-1878
- Maher, Michael, 1860-1918
- Maher, Michael, Fr. 1872-1937
- Maher, Patrick (Paddy), C.1889 - 1921
- Maher, Peter, 1866-1940,
- Maher, Teresa, 1824-1877
- Maher, William, 1876-1953
- Maher, William, c1875-1953
- Maher family
- Mahomet, Sake Dean, 1759-1851
- Mahomet, Sake Deen, 1759-1851
- Mahon, Bríd, 1922-2008
- Mahon, Catherine, 1869-1948
- Mahon, Catherine, fl. 1905-1916
- Mahon, Charles George, f. 1878
- Mahon, Denis, 1786x7-1847
- Mahon, Denis, 1787-1847
- Mahon, Derek, 1941-
- Mahon, Hugh, 1857-1931
- Mahon, James, c.1888-1972
- Mahon, James O'Gorman, 1800?-1891
- Mahon, Joe, b.1951
- Mahon, John, fl. 1708
- Mahon, John Denis, Sir, 1910-2011
- Mahon, John Ross, 1814-1887
- Mahon, John Ross, fl. 1847
- Mahon, Lady
- Mahon, Luke, d. c.1806
- Mahon, Mary, fl. 1790-1792
- Mahon, Nicholas
- Mahon, Ross, 1st bt., 1763-1835
- Mahon, Thomas, d.1792
- Mahon, Thomas, O.F.M., fl. 1748
- Mahon, Thomas, OFM, fl. 1748
- Mahoney, Cornelius (1818-1885)
- Mahoney, Francis Sylvester, 'Father Prout', d. 1866
- Mahoney, James, 1810-1879
- Mahoney, Patrick, V.C., 1827–1857
- Mahoney family
- Mahon family
- Mahon family (of Cavetown, Co. Roscommon)
- Mahon family (of Strokestown, Co. Roscommon)
- Mahony, Bernard, d. 1918
- Mahony, Daniel, Brigade Major, fl.1782-1832
- Mahony, Edmund, 1887-1918
- Mahony, Elizabeth (Iza), 1888-1919
- Mahony, Francis, 1804-1866
- Mahony, Francis Sylvester (‘Father Prout’), 1804–1866
- Mahony, Francis Sylvester, 1804-1865
- Mahony, Francis Sylvester, 1804-1866
- Mahony, Francis Sylvester 1804-1866 [Father Prout]
- Mahony, George Henry, 1888-1964
- Mahony, James (c. 1810-1859)
- Mahony, James, 1816-1859
- Mahony, James, fl. 1853
- Mahony, James Alexander, 1838 -1889
- Mahony, Nora, fl.1945-2010
- Mahony family
- Mahr, Adolf, 1887-
- Mahr, Adolf, 1887-1951
- Maiben, Andrew, 1724-1806
- Maignenn, Saint
- Mailer, Norman, 1923-2007
- Maine, Henry James Sumner, Sir, 1822-1888
- Maine, Henry Sumner, 1822-88
- Mainwaring, Arthur Edward, 1864-1930
- Mainwaring Arthur E., 1864-1930
- Mair, Peter, 1951-2011
- Maitland, Frederic William, 1850-1906
- Major, John, Sir, 1943-
- Major, John Roy, 1943-
- Makarty (McCarthy), Charles, d.1715
- Makdanell, Jakob, fl.1726-1739
- Makemie, Francis (1658-1708)
- Makemie, Francis, 1658-1708
- Makemie, Francis, c.1657-1708
- Makemie, Francis, fl. 1700
- Makinder, Halford, Sir, 1861-1947
- Makowski, Brigid Dheila, 1937-
- Malachias Hibernicus (Malachy) fl. end 13th cent.
- Malachy (Mael-Máedóc) Ua Morgair, 1094/5-1148
- Malachy, Saint, 1095?-1148
- Malachy, Saint, d. 1102
- Malachy O'Morgair, bishop and saint, c.1094-1148
- Malachy O Morgair, bishop and saint, c.1094-1148
- Malachy O Morgair, bishop and saint, c.1094-1148,
- Malby, Nicholas, 1530?-1584
- Malby, Nicholas, Sir, c.1530–1584
- Malchus, bishop and saint, b. c 1047, d. 1135
- Malcolmson, A. P. W., fl. 1970-2005
- Malcolmson, John, 1768-1828
- Malcolmson, Joseph, 1768-1840
- Malcolmson family
- Malcomson, A. P. W., 1945-
- Malcomson, David, 1765-1844
- Malcomson family
- Mallaby-Deeley, Henry, 1863-1937
- Mallet, John, d. 1868
- Mallet, John William, 1832-1912
- Mallet, Robert, 1810-1881
- Mallin, Michael Thomas, 1874-1916
- Mallin, Michael Thomas, 1874–1916
- Mallon, Gabriel, d.2016
- Mallon, James, 1887-1961
- Mallon, John, 1839-1915
- Mallon, Mary, 1869-1938
- Mallon, Seamus, 1936-
- Mallory, George Herbert Leigh, 1886-1924
- Mallows, Liam, 1892-1922
- Malo, Saint, fl. 500-600
- Malone, Anthony, d. 1776
- Malone, Brian, c.1926-1963
- Malone, Edmond, 1741-1812
- Malone, James "Broddie", fl.1920-1950
- Malone, James, 1891-1959
- Malone, John James Bernard (‘J. B.’), 1913-1989)
- Malone, Martin
- Malone, Mary, c.1809-1874
- Malone, Michael,
- Malone, Michael, d.1916
- Malone, Molly
- Malone, Richard, 1776-1836
- Malone, Robert
- Malone, Sylvester (1821-1899)
- Malone, Teresa, fl.1798
- Malone family
- Maloney, Frank R.
- Maloney, Marcus, Colonel,1812-1872
- Maloney, W. C., Dr, 1882-1952
- Maloney family
- Malony, Helena, 1883-1967
- Malthus, Thomas Robert, 1766-1834
- Malton, James, 1764-1803
- Malton family
- Malyn, Elizabeth, Lady Cathcart, d. 1789
- Manaig family
- Manchan, Saint
- Manchán, of Liath Mancháin, d.665
- Mandela, Nelson Rolihlahla, 1918-
- Mandeville, Bernard, 1670?-1733
- Mandeville, John, 1850-1888
- Mandeville, John, d. 1888
- Mandeville, John, Sir, pseud., d. 1372
- Mandeville family
- Mandle, William Frederick, 1934-2014
- Manfield family
- Manfra, Jo Ann
- Manfred, Peter
- Mangan, Dermot, 1914-2006
- Mangan, James Clarence (1803–1849)
- Mangan, James Clarence, 1803-49
- Mangan, James Clarence, 1803-1849
- Mangan, James Clarence, 1803–1849
- Mangan, Mary, (née Grace), c.1880-1918
- Mangan, Owen Peter, 1838-1924
- Mangan, Patrick, Father
- Mangan, Patrick, Fr
- Mangan, William, d. 1799
- Mangin, Edward, 1772-1852
- Manifold, William Ross, d.1852
- Manion, Patrick
- Manisty, Edward, 1844-
- Manley, Jim, b. 1934
- Manliffe (Manly) family
- Manliffe, Jacob. 1679-1758
- Manliffe, Josiah, 1688-1752
- Manly (Manliffe), Joseph, 1716-1802
- Manly, Henry, d.1871
- Manly, Joseph,d.1802
- Manly family
- Mann, Joseph
- Manners, Charles, 4th duke of Rutland, 1754-1787
- Manners, John James Robert, 7th Duke of Rutland, 1818-1906
- Manners, Katherine, duchess of Buckingham and marchioness of Antrim, 1603?-1649
- Mannin, Ethel, 1900-1984
- Manning, Brian, 1927-2004
- Manning, Henry Edward, cardinal, 1808-1892
- Manning, Mary
- Manning, Mary, 1905-1999
- Manning, Maurice, 1943-
- Manning, Michael, d. 1954
- Manning, Olivia, 1908-1980
- Manning, Phelim L., 1950-2020
- Manning, Robert, 1816-1897
- Manning, Sean
- Manning family
- Mannix, Daniel, 1864-1963
- Mannix, Daniel, archbishop, 1864-1963
- Mannix, Daniel, bishop, 1864-1963
- Mannix, Daniel Patrick, 1864-1963
- Mannix, Liam
- Mannock, Edward, 'Mick', 1887-1918
- Manogue, Patrick, bishop, d. 1895
- Mansell, Thomas, 1726-1814
- Mansell family
- Mansergh, Martin
- Mansergh, Martin, 1946-
- Mansergh, Nicholas, 1910-1991
- Mansergh, Nicholas, see: Mansergh, Philip Nicholas Seton, 1910-1991
- Mansergh, Philip Nicholas Seton, 1910-1991
- Mansergh St. George, Richard, 1757-1798
- Mansfield, Alice Adèle (Audebard de Férussac), 1846 - 1934
- Mansfield, George, fl. 1898
- Mansfield, Joseph, c.1845-1879
- Mansfield family
- Manson, David, 1726-92
- Manson, David, 1726-1792
- Mansoni, Ludovico, S. J., fl. 1601
- Mant, Richard, 1775-1848
- Mant, Richard, bishop of Down, Connor, and Dromore, 1776–1848
- Mant, Richard, d. 1848
- Maoldoid, St, 7th cent.?
- Maol Muire, d.1106
- Maple, William, 1679-1762
- Maquay family
- Mara, P.J., fl. 2004
- Marcellus Empiricus, also known as Marcellus Burdigalensis (“Marcellus of Bordeaux”), fl. c500
- Marchant, Charles, c.1857-1920
- Marconi, Guglielmo, 1874-1937
- Marcus, David, 1924-2009
- Maredudd ab Owain, prince of Gwynedd and Deheubarth, d. 999
- Mareschall, John, Sir
- Margaret, Saint, c.1045-1092
- Maria, Queen of Hungary, 1505-1558
- Mariana or Maria Anna of Austria, 1634-1696, Queen of Spain
- Marianus Scottus (Muiredach son of Robartach) (fl. 1067-c.1080)
- Marianus Scottus (Muiredach son of Robartach), fl.1067-c.1080
- Marianus Scottus (Máel-Brigte) (d. 1082/3)
- Marianus Scottus, d.1082
- Maria Theresa Walburga Amalia Christina, Empress, 1717-1780
- Marie, queen of Roumania, consort of Ferdinand I, 1875-1938
- Marie, queen of Roumania, consort of Ferdinand I, 1875-1938
- Marie Antoinette, Queen of France, 1755-1793
- Marie Antoinette, Queen of France, d. 1793
- Marie de France
- Marisco, Matilda de,, fl.1220-1244
- Marisco, William de, fl.1215-1242
- Maritain, Jacques, 1882–1973
- Marjoribanks, Edward, fl. 1932
- Marjoribanks, Ishbel, Lady Aberdeen, 1857-1939
- Markey, John, d. 1927
- Markey, Patrick, d.1856
- Markey, Thomas, d.1815
- Markey, Thomas, fl. 1798-1800
- Markievicz, Casimir D., 1874-1932
- Markievicz , Constance (Georgine) 1868-1927
- Markievicz, Constance Georgine, 1868-1927, Countess Markievicz
- Markievicz, Constance Georgine, 1868–1927
- Markievicz, Constance Georgine, countess, 1868-1927
- Markievicz, Constance Georgine, countess, 1868-1927,
- Markievicz, Constance Georgine, countess Markievicz, 1868-1927
- Markievicz, Maeve, 1901-1962
- Markiewicz, Casimir Dunin, Count, 1874-1932
- Markiewicz, Constance, 1868-1927
- Marks family
- Markys, Janico, c. 1430-c. 1496
- Marlay, Charles Brinsley, 1831-1912
- Marmion, Blessed Dom Columba, 1858-1923
- Marmion, Columba, 1858-1923
- Marmion, Columba, Blessed, 1858-1923
- Marmion, Joseph, Blessed, 1858-1923
- Marmion, Miguel (Michael), 1736-1817/18
- Marmion, Nicholas, c.1797-1882
- Marmion, Patrick, d.1856
- Marmion, William Edward, 1845-1896
- Marmion family
- Marmion family (of Carlingford)
- Marnell, Bernadette, d.2008
- Marreco, Anthony Freire, 1915-2006
- Marr family
- Marrinan, Jack, 1933-2015
- Marron, Laurence, d. 1996
- Marsh, C.S. 'see' Monson, Cecil Godfrey, d.1974
- Marsh, Clare, 1875-1923
- Marsh, Henry, Sir, 1790-1860
- Marsh, John, c.1841-1891
- Marsh, Joseph, c.1843-1913
- Marsh, Narcissus, 1638-1715
- Marsh, Narcissus, archarchbishop, 1638-1713
- Marsh, Narcissus, archbishop, 1638-1713
- Marsh, Narcissus, bishop, 1638-1713
- Marsh, Narcissus, Bishop, 1638-1713 ; Swift, Jonathan, 1667-1745
- Marshal, Isabella
- Marshal, Isabella (née de Clare), 1171–1220
- Marshal, John (Johan le Mareschal), ? - 1235
- Marshal, Richard, earl of Pembroke and Striguil, d. 1234
- Marshal, William, 1st Earl of Pembroke, 1146 – 1219
- Marshal, William, d.1231
- Marshal, William, earl of Pembroke and Striguil, 1146?-1219
- Marshal, William, earl of Pembroke and Striguil, 1146?-1219 ; Ó Máelmuaid, Ailbe, bishop of Ferns
- Marshal family, earls of Pembroke
- Marshall, Gilbert, 1858-1934
- Marshall, James Drummond, 1808-1868
- Marshall, James Lister, 1899-1961
- Marshall, John, d. 1681
- Marshall, John McWilliams Johnston, 1862-1944
- Marshall, William, 1144-1219
- Marshall, William, 1147-1219
- Marshall, William Forbes, Reverend 1888-1959
- Marsh Narcissus archbishop 1638 1713
- Marsili, Luigi, 1342-1394
- Marson, Claire
- Marstrander, Carl, 1883-1965
- Martianus Minneus Felix Capella, fl. 375-425
- Martin, Alberta (neé Stewart), 1906-2004
- Martin, Alexander (1721-1807)
- Martin, Ambrose Victor, 1900-1974
- Martin, Anthony, bishop of Meath, fl. 1624-1650
- Martin, Augustine, 1935-1995
- Martin, Aurelian Lewis, Br, 1912-1992
- Martin, Bella, fl. 1798
- Martin, Charlie, 1895-1915
- Martin, Christopher, fl. 1709-1821
- Martin, Dick, 1754-1834
- Martin, F(rancis) X(avier )
- Martin, F. X. (Francis Xavier), 1922-2000
- Martin, Fergus, b.1955
- Martin, Francis Xavier, 1922-2000
- Martin, Harriet Letitia, 1801-1891
- Martin, Henry Newell, 1848-1896
- Martin, J. F. R., fl. 1916-1939
- Martin, James, 1845-1931
- Martin, John (1812–75
- Martin, John, d. 1860
- Martin, John, fl. 1575
- Martin, John, fl. 1798
- Martin, John F., 1916-
- Martin, Jonathan, d. 1838
- Martin, Liam C., 1934-1998
- Martin, Martin (Màrtainn, Màrtainn), d.1718
- Martin, Mary, Mother (Ní Mháirtín, Máire), 1892-1975
- Martin, Mary, Mother, 1892-1975
- Martin, Mary Mother, 1892-1975
- Martin, Micheál, 1960-
- Martin, Mother Mary, (Máire (Marie, Mary) Helena ), 1892-1975
- Martin, Patrick, fl. 1800
- Martin, Patrick G. (Patrick Graeme), F.R.I.N.A.
- Martin, Richard, 1754-1834
- Martin, Richard, 1754-1834 ‘Humanity Dick’
- Martin, Robert,
- Martin, Robert, 1846-1905
- Martin, Robert, fl. 1735
- Martin, Saint
- Martin, saint, of Tours, fl.c.316-c.397
- Martin, Sarah, 1791-1843
- Martin, Séamus
- Martin, Thomas, 1858-1926
- Martin, Thomas, 1961-
- Martin, Thomas Barnewall, fl. 1837-39
- Martin, Thomas Shannon Patrick, fl. 1890-1922
- Martin,Violet, Florence 1862-1915
- Martin, Violet Florence ('Martin Ross'), 1862-1915
- Martin, Violet Florence (Martin Ross), 1862-1915
- Martin, Violet Florence, 1862-1915
- Martin, William, Reverend, 1729-1806?
- Martin, Éamonn
- Martineau, Harriet (1802-1876)
- Martineau, Harriet, 1802-1876
- Martineau, James, 1805-1900
- Martin family
- Martin of Ireland, d. 875
- Martin of Tours, 316/36-97
- Martin of Tours, c.316-397
- Martin of Tours, Saint, c.316-c.397
- Martinon, Jean, 1910-1976
- Martin V, pope
- Martyn, Edward, 1859-1923
- Martyn, Oliver
- Martyn family
- Marum, Edward Purcell Mulhallen, M.P., 1822 - 1890
- Marum, Kyran, d. 1827
- Marvell, Andrew, 1621-1678
- Marward, Janet, 1562-1629
- Marx, Karl, 1818-1883
- Marx, Karl, 1818-1883,
- Marx, Karl, 1818-1883
- Mary, Blessed Virgin
- Mary, Blessed Virgin,
- Mary, Blessed Virgin, Saint
- Mary, Mother of Jesus
- Mary, princess royal, 1897-1965
- Mary Cleophas, Sr, 1865-
- Mary I, 1516-1558
- Mary I, queen, 1516-1558
- Mary of Teck, Queen, 1867-1953
- Masaryk, Thomas (Tomáš Garrigue Masaryk) 1850-1937
- Maser, Frederick
- Maskey, Alex, 1952-
- Mason, Charlotte, 1842-1923
- Mason, Roy, 1924-
- Mason, Roy, 1924-2015
- Mason, William, Rev.
- Mason family
- Masrren, James, fl.1911-1912
- Massena, Andre, 'Baron' de Camin, fl.1856-1863
- Massey, Eyre, 1st Baron Clarina (1719–1804)
- Massey, Eyre, 1st Baron Clarina, 1719-1804
- Massey, Eyre, 1st Baron Clarina, d. 1804
- Massey, Godfrey, d. 1852
- Massey, Hugh Dillon, Sir, fl. 1844
- Massey, William Ferguson, 1856-1925
- Massey famiuly, barons Clarina
- Massie, Larry B.
- Massy, Anne L., d.1931
- Massy, Annie L., 1867-1931
- Massy, Godfrey, fl. 1845
- Massy, Hugh Hamon Charles George, 8th Baron Massy of Duntrileague, 1894-1958
- Massy, William Godfrey Dunham 'Redan', 1838-1906
- Massy family
- Mastai-Ferretti, Giovanni, Maria, Pope Pius IX, 1792-1878
- Masterson, Patrick
- Masterson, Patrick, 1936-
- Masterson, Thomas, fl. 1752-1755
- Matania, Fortunino, 1881 – 1963
- Matchett, Patricia
- Matejka, Mike
- Matejko, Jan, 1838-1893
- Matheson, Charles Louis, d. 1921
- Matheson, John Carstairs
- Mathew, Mary, 1724-1777
- Mathew, Patrick
- Mathew, Richard, fl.1725-1751
- Mathew, Theobald, 1790-1856
- Mathew, Theobald, 1790–1856
- Mathew family
- Mathews (Matthews), John, -1799
- Mathews, Aidan Carr, 1956-
- Mathews family
- Matischek, Ludwig,
- Matisse, Henri, 1869-1954
- Matthew, Henry Colin Gray, 1941-1999
- Matthew, Robert Hogg, Sir, 1906-1975
- Matthew, Toby, Sir, 1577-1655
- Matthews (MacMahon), Eugene (Eoin), archbishop, c.1575-1623
- Matthews, George, 1756-1839
- Matthews, Lully, fl. 1808-1838
- Matthews, Robert (?Henry), fl.1913-1915
- Matthews, Robert Richard, 1918/20-1953
- Matthews, Seamus (Paddy), 1919-2003
- Matthews-Napier, Rodney Richard see Matthews, Robert Richard, 1918/20-1953
- Matthews family
- Maturin, Charles, 1782-1824
- Maturin, Charles Robert
- Maturin, Charles Robert, 1780-1824
- Maturin, William, d. 1887
- Mauchteus (Mochtae), fl. late 5th/early 6th cent.
- Maude, Cornwallis, 1817-1905
- Maude, Daniel, 1801-1868
- Maude, Edmund H., fl. 1877-1897
- Maultsaid, Wesley,
- Maume, William James, 1778-1850
- Maunder (née Russell), Annie Dill, astronomer, 1868-1947,
- Maunder, Annie Scott Dill (née Russell), 1858-1947
- Maunder, Annie Scott Dill, 1868-1947
- Maunsell, Richard, 1868-1944
- Maunsell, Richard E.L., d. 1944
- Maunsell, Robert, 1810-1894
- Maunsell, Thomas, 1839-1937
- Maunsell, Thomas, fl.1751-1763
- Maunsell family
- Maurice, Edward, bishop of Ossory, c.1690-1756
- Maurice fitz Thomas, 1st earl of Desmond
- Maxey, Timothy, fl.1862-1866
- Maxim, Hiram Stevens, sir, 1840-1916
- Maxse, Leopold James, 1864-1932
- Maxwell, Anna, Lady Farnham, d.1868
- Maxwell, Arthur Kenlis, 9th baron Farnham, 1879-1957
- Maxwell, Barry, 3rd Baron Farnham, d.1800
- Maxwell, Henry, 7th Lord Farnham, 1799-1868
- Maxwell, Henry, 1669-1730
- Maxwell, Jim, d.1997
- Maxwell, John, 1859-1929
- Maxwell, Nick (Nicholas)
- Maxwell, Richard A., fl.1890-1893
- Maxwell, Robert (Bob), fl.1823-1840
- Maxwell, Robert Perceval, Major
- Maxwell, Sir John Grenfell, 1859-1929
- Maxwell, Somerset Henry, 10th Baron Farnham, 1849-1900
- Maxwell, William Hamilton, 1792–1850
- Maxwell, William Hamilton, 1794-1850
- Maxwell family
- Maxwell family, Barons Farnham
- May, Andrew McLean, 1881-1971
- May, Frederick, 1911-85
- May, Frederick, 1911-1985
- May, Henry, of Bristol, d. 1466
- May, R. J., c.1892-1971
- May, Sheila (May Greene)
- Mayhew, Henry, 1812-1887
- Mayhew, Patrick, 1929-
- Mayhew, Patrick, Lord, 1929-
- Mayler, Nicholas, P.P., d.1653
- Mayler, Philip, Archdeacon of Ferns, 1832-1884
- Mayne (or Mein), Charles, -1729?
- Mayne, Ethel Colburn, 1865-1941
- Mayne, Robert Blair (‘Paddy’), 1915–1955
- Mayne, Robert Blair, 1915-1955
- Mayne, Sir William [later 1st Baron Newhaven] (1722–1794)
- Mayo, Charles, 1794-1829
- Mayo, Dermot Robert Wyndham Bourke, earl of, b. 1851
- Mayon, Violet
- Mazzini, Giuseppe, 1805-1872
- Mazzini, Giuseppe, 1805-1872,
- McAdams, Norman John, 1940-2006
- McAdoo, Henry Robert, bishop, 1916-1998
- Mc Aedh, Cellach, Archbishop of Armagh, fl. 1080-1129
- McAleer, Clement, b.1949
- McAleer, Sheila, 1918-2008
- McAleese, Daniel Patrick, 1920-1942
- McAleese, Mary, 1951
- McAleese, Mary, 1951-
- Mc Aleese, Mary, b1951
- McAlery, Irene, 1892-1973
- McAlery, John, d.1925
- McAlinden, Edward, 1884-1917
- McAlinden, Henry, b.1896
- McAlinden, James, 1891-1917
- McAlinden, John, 1883-1914
- McAliskey, Róisín Elizabeth, 1971-
- McAlister, David Thomas, 1927-2011
- McAlister, Jacqueline Hope (née Douglas), 1933-2018
- McAlister, Patrick, 1826-1895
- McAlister, Patrick, fl. 1886-1895
- McAllister, George, 1786-1812
- McAllister family
- McAloon, Seán, d. 1998
- McAnally, David, 1765-1818
- McaNeill, Niall, 1899-1969
- McArdle, Seán P., fl. 1916-1976
- McArthur, Douglas, Gen.
- McArthur, Douglas, Gen., 1880-1964
- McArthur, William, Sir, 1809-1887
- McAtamney, William, d.1914
- McAtasney, John, b.1934
- McAteer, John, fl.1950-1954
- McAteer, Seán, d. 1937
- McAteer family
- McAuley, Catherine, 1778-1841
- McAuley, Catherine, the Venerable, 1787-1841
- McAuley, Catherine Elizabeth (Nic Amhalaí, Caitríona), 1778 – 1841
- McAuley, Catherine Elizabeth, 1778-1841
- McAuley, Charles, 1910-1999
- McAuley, James Phillip, 1917-1976
- McAuley, John, d. 2001
- McAuley, Tony, d. 2003
- McAuley, Tony, d.2003
- McAuliffe, Pat, 1846-1921
- McAuliffe, Pat, fl. 1846-1921
- McAuliffe family
- McAvera, Brian, b.1948
- McAvin, Josie, 1920-2005
- McBrady family
- McBratney, Thomas, d.1921
- McBrearty family
- McBride (née Carney), Winnie (Maria Winifred), 1887-1943
- McBride, George, 1898-1988
- McBride, James
- McBride, John, 1651?-1718
- McBride, John, 1868-1916
- McBride, John, d. 1800
- McBride, Maud Gonne, 1866-1953
- McBride, Patrick, 1903-
- McBride, Seán, 1904-1988
- McBride, William, 1895-1916
- McBride, William, Vice-Admiral Sir, 1895-1959
- McBride family
- McBruodin, Dermot, d.1617
- McCabe, Alexander, 1900-1988
- McCabe, Alexander T., Fr, fl. 1936
- McCabe, Edward, d. 1885
- McCabe, Eugene, 1930-
- McCabe, family
- McCabe, Felix, 1750-1816
- McCabe, Frederick, 1903-1940
- McCabe, Henry,
- McCabe, Jane, b.1915
- McCabe, Joe, d.2015
- McCabe, John, genealogist
- McCabe, Paddy, 1908
- McCabe, Patrick, 1955-
- McCabe, Patrick, c.1708-1785
- McCabe, Patrick, d. 1899
- McCabe, Richard d. 1799
- McCabe, Thomas, c.1739-1820
- McCabe, Turlough, fl. 1556-1582
- Mc Cabe, Turlough d.1602
- McCabe family
- McCabe family (Donnybrook)
- McCaferty, Jeremiah, fl.1760-80
- McCafferty, John, Captain, fl. 1870-1908
- McCafferty, John, fl.1866
- McCafferty, Nell, 1944-
- McCafferty, Nell, 1944-2024 ; Devlin McAliskey, Bernadette, 1947-
- McCaffery, Bernard, Fr., 1814-1883
- McCaffery, Father Bernard, 1814-1883
- McCaffery, Patrick, d. 1862
- McCaffrey, Edward, fl. 1910/1911
- McCaffrey, John F., historian
- McCaffrey family
- McCaghwell, Hugh, O.F.M., 1571-1626
- McCaghwell, Hugh, OFM, 1571-1626
- McCahon, Ethel (née McKay), b. 1917
- McCall, John, 1822-1902
- McCall, Margaret, 1868-1938
- McCall, P. J. (Patrick Joseph), 1861-1919
- McCall, P. J., 1861-1919
- McCambridge, James, d. 2000
- McCambridge family
- McCan, John, 1778-1854
- McCan, Pierce, 1882-1919
- McCan, Pierse 1882-1919
- McCance, David, 1794-1854
- McCance, James, d.1815
- McCance, John, 1772-1835
- McCance, Samuel, 1771-1841
- McCance, William, 1805-1844
- McCance family
- McCandless, Rex, 1915-1992
- McCann, Barney, fl.1813-1823
- McCann, Colum, 1965-
- McCann, Daniel (Dan), 1897-1934
- McCann, Donal, 1943-1999
- McCann, George, c.1878-1912
- McCann, Jack
- McCann, Jack, d.1993
- McCann, James, 1840-1904
- McCann, Joe, 1947-1972
- McCann, John, c.1920-2004
- McCann, John Jack 'Rover', 1886-1920
- McCann, Neil V.
- McCann, Nessan, 1923-
- McCann, Paddy, b. 1963
- McCann, Patrick (d. 1836)
- McCann, Robert
- McCann family
- McCarr Hughes, Margaret Rose (Gretta), 1918-2001
- McCarrick, Annie
- McCarron, James, c.1823-post 1869
- McCarry, Catherine Agnes ('Kate'), 1880-1970
- McCartan, Patrick
- McCartan, Patrick, 1878-1963
- McCartan family
- McCarter, Bob, b.1899
- McCarter family
- McCarthy, Alexander, 1803-1868
- McCarthy, Alexander, d.1843
- McCarthy, Annie, b. ? c.1910
- Mccarthy, Bartholomew (Batty), 1882-1916
- McCarthy, Brian, 1929-2019
- McCarthy, Bridget (Sister Dympna), 1890-1943
- McCarthy, Caroline, b. 1971
- McCarthy, Charles, 1924-1986
- McCarthy, D'Alton, 1836-1898
- McCarthy, Dermod Moyle
- McCarthy, Desmond
- McCarthy, Donagh Moyle, d. 1631
- McCarthy, Donal, 1894-1942
- McCarthy, Donogh Owen, 1597-1719
- McCarthy, Elizabeth (Greene, Elizabeth)
- McCarthy, Felix, d. 1912
- McCarthy, Henry O'Clarence, d.1865
- McCarthy, Hugh, 1869-1940
- McCarthy, J. J. (James Joseph), 1817–1882
- McCarthy, Jack, 1916-
- McCarthy, Jeremiah, 1911-2000
- McCarthy, Johanna, d.1919
- McCarthy, John J., 1881-1961
- McCarthy, Joseph Raymond, 1908-1957
- McCarthy, Justin, 1830-1912
- McCarthy, Justin, 1830–1912
- McCarthy, Justin, P.P., 1810-1862
- McCarthy, Justin Huntly, 1856–1936
- McCarthy, Justin Washington Joseph, c 1789-1861
- McCarthy, Kate see Lawrence, Mother Mary, 1895-1971
- McCarthy, Katie, 1874-1896
- McCarthy, Maeve, b. 1964
- McCarthy, Mary
- McCarthy, Mary, 1902-1940
- McCarthy, Mary, d. 1940
- McCarthy, Michael, 1939-
- McCarthy, Michael, d. 1918
- McCarthy, Mick, 1914-2009
- McCarthy, Nancy, 1902-1988
- McCarthy, Owen (Eugene), Revd.
- McCarthy, Paddy, fl. 1916-1919
- McCarthy, Patrick Henry, 1860-1933
- McCarthy, Patrick J. (1848-1921)
- McCarthy, Peggie O'Neill
- McCarthy, Thaddeus, blessed, 1455-1492
- McCarthy, Thomas, 1954-
- McCarthy, Thomas St.George, 1862-1943
- McCarthy, Thomas St George, fl. 1884
- McCarthy, Timity, Father, 1840-1925
- McCarthy, Timity, Fr, 1840-1925
- McCarthy, Timothy
- McCarthy, Timothy Francis, 1834-1918
- McCarthy-Morrogh, James, -1916
- McCarthy-Morrogh family
- McCarthy family
- McCartney, Colm, d. 1975
- McCartney, Robert, 1971-2005
- McCartney, Sean
- McCartney family
- McCarty, Daniel
- McCathy, Tommy
- McCaughan, Anna, d. 2001
- McCaughan family
- McCaughwell, Hugh, fl. 1618-1626
- McCauley, Leo Thomas, 1895-1974
- McCausland, Conolly, 1713-1794/96
- McCausland, Dominick, 1806-1873
- McCausland, John
- McCaw, Charlie,
- McCaw, Robert Johnston, d.1950
- McClair, Denis, 1762-1853
- McClanaghy,Cornelius Kentagh (Conchobhar Mac Fhlannchadha), fl. 1580
- McClatchey family
- McCleary, William Henry, d. 1861
- McClelland, John A., 1870-1920
- McClenachan, William, Rev., d. 1766
- McClenachan, William, Revd, d. 1766
- McCleverty, William, 1716-1779
- McClintock, Francis Leopold, Sir, 1819-1907
- McClintock, Frederick William
- McClintock, Henry, 1783-1843
- McClintock, Leopold, Sir, 1819-1907
- McClintock Bunbury, William (1800-1866)
- McClintock Bunbury, William (1800-1866)
- McClintock Bunbury family, barons Rathdonnell
- Mc Clintock family
- McClintock family
- McClodkey, Hugh, 1814-1873
- McCloskey, Alexander Patrick, c.1810-1867
- McCloskey, Bernard (Barney), 1885-1960
- McCloskey, Henry Joseph, 1885-1916
- McCloskey, John, 1810-1885
- McCloskey, John, 1896-post-1919
- McCloskey, John H., c.1920-1959
- McCloskey, Matthew, 1893-1973
- McCloskey, Mick, d. 1932
- McCloskey, Morgan, 1916-2006
- McCloskey, Owen (Oigne) 'Captain', fl.1834
- McCloskey, Patrick (Paddy Jack), c.1855-1926
- McCloskey, Paul (Dudey), b. 1979
- McCloskey-Cummings, Anna-Mae, fl. 1950-
- McCloskey family
- Mc Cloy, John (b. 1898)
- McClure, Robert John Le Mesurier, Sir, 1807-1873
- McClure, Samuel, 1919-2002
- McClure, William, 1801-1874
- McClure family
- McCluskey, John Emmet, 1891-1981
- McColgan, Sophia, 1970-
- McCollum, John, c.1917-1962
- McCollum, Randal, 1802-1874
- McColoskey, John, Cardinal, fl. 1864-1885
- McComb, William, 1793-1873
- McComb, William, fl. 1880
- McCombe, Alexander, fl.1734-1743
- McCombe, Rowan
- McConachy, Charles George, 1889-1914
- McCone, Kim
- McCone, Kim, historian
- McConn, William, 1880-1914
- McConnell, Adams Andrew, 1884-1972
- McConnell, John, fl. 1939-1945
- McConnell, Mabel Washington, 1884-1958
- McConnell, Roseanna, 1849-1929
- McConnell family
- McConnon family
- McConsidin, Owen
- McConvery, Brendan
- McConville, Jean, 1934-1972
- McConville, Oisín, 1975-
- McConville family
- McCoo, James, fl.1870-1879
- McCooey, Art, 1738-1773
- McCook, James, b.1890
- McCook family
- McCorkell family
- McCorley, Felix, Colonel, 1890-1946
- McCorley, Roddy, d. 1798
- McCorley, Roger, Colonel, 1901-1993
- McCormack, Christy A., 1914-2004
- McCormack, Eliza, d. 1832
- McCormack, Inez, 1943-2013
- McCormack, John, 1884-1945
- McCormack, John Francis, 1884-1945
- McCormack, Liam, 1919-1996
- McCormack, Mary
- McCormack, Thomas, OFM, d.1811
- McCormack, W. J.
- McCormack family
- McCormack family (of Taghmon [County Wexford])
- McCormick, A. D.
- McCormick, F. J. (Judge, Peter Christopher), 1890-1947
- McCormick, F. T., 1889-1947
- McCormick, John, fl. 1873
- McCormick, Liam, 1916-1996
- McCormick, William, 1801-1878
- McCormick, Willie, c.1915-2009
- McCosh, James, 1811-1894
- McCosh, James, 1811–1894
- McCosh, James, fl. 1852-1868
- McCouaig family
- McCoubrey, Margaret (née Mearns), 1880-1956
- McCoubrey, Margaret, 1880 - 1955
- McCoubrey, Margaret Taylor, 1880-1956
- McCourt, Frank, 1930-
- McCourt, Frank, 1930-2009
- McCourt, Frank, 1931-
- McCourt, Kevin C., 1915-2000
- McCourt, Neal, 1851-1872
- McCowen family
- McCoy, A.P. (Tony)
- McCoy, Irene Emilie, 1902-1937
- McCracken, Eliza, b. 1804
- McCracken, Henry Joy, 1767-1798
- McCracken, Henry Joy, 1767-1798,
- McCracken, John Leslie
- McCracken, John Stuart (1816-1857)
- McCracken, Mary Ann, 1770-1866
- McCracken, Mary Anne, 1770-1866
- McCrea, Alexander, 1879-1963
- McCrea, Edward D'Arcy, 1895-1940
- McCrea, Patrick (Pat), 1883-1964
- McCrea, William, Sir, 1904-1999
- McCready, William, 1909
- McCreary, Alf
- McCrie, Thomas, 1772-1835
- McCrory family
- McCrystal, Charles, 1905-1991
- McCullagh, Crawford, Sir, 1868-
- McCullagh, Crawford, Sir, 1868-1948
- McCullagh, Francis, 1874-1956
- McCullagh, Francis, 1874–1956
- McCullagh Mulvin Architects
- McCullen, James, 1817-1877
- McCullen, James, fl.1848
- McCullen, John, fl. 1916-1967
- McCullen, Richard, Fr., fl. 1911-1916
- McCullen, William, 1824-1891
- McCullen family
- McCulloch, Derek
- McCullough, Denis
- McCullough, Denis, 1883–1968
- McCullough, Ernest, d. 1917
- McCullough, John, 1832-1885
- McCunnell, John, fl. 1939-1945
- McCurdy, John, c.1824-1885
- McCurdy, John, c1824-c1885
- McCurdy family
- McCusker, Susan, d. 1922
- McDaid, Danny 1941-
- McDaid, John, 1958-
- McDaid, Paddy, 1930-2007
- McDaid family
- Mc Dermot (Mc Dermott) family
- McDermott, Alice
- McDermott, Ambrose, O.P., Bishop of Elphin, fl.1686-1717
- McDermott, Austin, 1930-2014
- McDermott, Michael
- McDermott family
- McDermott Roe family
- McDevitt family
- McDonagh, James Quinn, 1967-
- McDonagh, Martin, 1970-
- McDonagh, Martin, d. 1934
- McDonagh, Muriel Enid Gifford, 1884-1917
- McDonagh, Máirtín Mór, 1860-1934
- McDonagh, Oliver, 1924-2002
- McDonagh, William Parker, fl. 1876-1894
- McDonagh family
- McDonald, Annie, 1899-
- McDonald, Daniel M., 1905-1991
- McDonald, Eddie, d.2023
- McDonald, Ian, 1960-
- McDonald, Kevin, 1942-2011
- McDonald, Mamo ; Cullen, Mary ; Mac Curtain, Margaret
- McDonald, Michael, fl. 1905
- McDonald, Robbie,
- McDonald, Walter, 1854-1920
- McDonald family
- McDonnell, Andrew (Andy Mac), 1898-1964
- McDonnell, Carmel, d. 2002
- McDonnell, Charles, count, fl.1860
- McDonnell, Francis (d.1820)
- McDonnell, Francis Vincent, c.1881-1917
- McDonnell, Gerald, 1971-2008
- McDonnell, Helen Louisa, 1917-2007
- McDonnell, James ; O'Connell, John
- McDonnell, Joan, 1951-
- McDonnell, John (1733-1808)
- McDonnell, Johnny, 189?-1981
- McDonnell, Joseph Patrick, 1847-1906
- McDonnell, Laurence Aloysius, 1867/68-1925
- McDonnell, Laurence Aloysius, d.1925
- McDonnell, Martin, d.1905
- McDonnell, Martin, fl.1854-1905
- McDonnell, Mollie
- McDonnell, Paddy, 1893/4-1977
- McDonnell, Paddy, c.1895-1949
- McDonnell, Patrick, c.1894-1921
- McDonnell, Patrick, fl. 1881
- McDonnell, Richard, 1860-1925
- McDonnell, Thomas, 1912-1987
- McDonnell, Val, 1884-1973
- McDonnell, William Keyes, 1888-1967
- McDonnell family
- McDonough, Laurence (Larry),1867-1952
- McDonough family
- McDougall, Margaret Dixon, 1828-1899
- McDowell, David Hemphill, 1870-1919
- McDowell, Henry, 1933-2018
- McDowell, R. B. (Robert Brendan), 1913-2011
- McDowell, Robert Brendan, 1913-
- McDyer, James, 1910-1987
- McDyer, James, 1911-1987
- McDyer, James, fl. 1982
- McEgan, Boetius, d. 1650
- McEgan family
- McElborough, Robert, 1884-1952
- McElheran, Robert, 1852-1910
- McElligott, James John (‘Jimmy’), 1893-1974
- McElligott, Richard Pierce, d. 1818
- McEllistrim, Tom, 1894-1973
- McEllistrim family
- McElroy, Albert H., 1915-1975
- McElroy, Albert Horatio, 1915-1975
- McElroy, Eric, 1933-2004
- McElroy, John, S.J., 1782-1877
- McElroy, Paddy, 1931-2006
- McElwaine, Alan, 1941-
- McEnearney family
- McEnerhiny (McInerney) family
- McEnery, John, 1796-1841
- McEnery, Michael Joseph, 1858-1940
- McEnroe, Charles, 1826-1859
- McEnroe, James, Msgr, 1832-1925
- McEnroe, John, Msgr, 1869-1954
- McEnroe, John J., 1868-1910
- McEnroe, Michael, 1834-1910
- McEnroe, Peter Cornelius, 1838-1923
- McEnroe, Philip, 1839-1910
- McEnroy, Brian, c.1854-1932
- McEntee, A. F., fl. 1991
- McErlain, Paddy Joe, 1894-1997
- McEvilly, John, bishop, 1818-1902
- McEvoy, Carmel
- McEvoy, Dan, 1927-2015
- McEvoy, Frank, d.2011/2012
- McEvoy, Kate, née O'Neill, fl.1858-1912
- McEvoy family
- McFadden, Roy, 1921-1999
- McFadden, Thomas, 1868-1924
- McFadzean, William, 1895-1916
- McFadzean, William, d.1916
- Mc Fall, James (Jim), 1926-1992
- McFarland, C. K.
- McFarlane, Willie, c.1913-2009
- McFarlane family
- McFaull, James, d.1958
- McFaull, Katharine (Cassie), (Née McCandless), d.1919
- McGahern, John, 1934-
- McGahern, John, 1934-2006
- McGahern, John, 1934-2006,
- McGahern, John, 1934-2016
- McGahern, John, 1934–2006
- McGahern, John,1934–2006
- McGahern, John 1934-2006
- McGann, Lawrence Edward, 1852-1928
- McGarrity, Joseph (1874-1940)
- McGarrity, Joseph, 1874-1940
- McGarry, Brendan
- McGarry, J. G., Fr, fl. 1977
- McGarry, J.G., Fr, fl. 1977
- McGarry, Murt, c.1961-2006
- McGarry, Patrick, 1863-1930
- McGauley, James William
- McGauran, Peter Bernard OFM, d.1837
- McGee, Charles, 1892-1916
- McGee, Seamus, 192?-
- McGee, Thomas D'Arcy, 1825-1868
- McGee, Thomas D'Arcy, 1825-1868
- McGennis, Edward, bishop, 1846-1906
- McGeown, Mollie, 1923-2004
- McGettigan, Daniel, bishop, 1815-1887
- Mc Gettigan, John, 1882-1958
- McGettigan, Patrick, d. 1861
- McGettigan family
- McGhee, Richard, 1851-1930
- McGhil, Eleanor Mossop, 1823-
- McGhil, John, 1957-2005
- McGill, Patrick, 1891-1963
- McGillacuddy family
- McGilligan, Patrick, 1889-1979
- McGilligan, Patrick, 1889–1979
- McGillycuddy family
- McGinley, Joseph Patrick, 1894-1974
- McGinley, Peter Toner, 1856-1942
- McGinley, Thomas Colin, 1830-1887
- McGinn, Conor F., fl.1978-
- McGinness, John, fl.1797
- McGinty, Garnie W.
- McGinty, Thom('The Diceman'), 1952-1995
- McGirr, James, 1745-1815
- McGivern, Willliam P.
- McGlinchey, Charles, 1861-1954
- McGlinchy, T.
- McGlinn, Edward (Ned), c.1818-1854
- Mc Glynn, Dan, 1910-1992
- McGlynn, Edward, Dr., fl. 1890
- McGlynn family
- McGoldrick, Martin, d. 1909
- McGonagle (MacGongail), Donald, 1520-1589
- McGonagle, Stephen, 1914-2002
- McGoogan, Archibald, 1860-1931
- McGoogin family
- McGovern, Barry, 1948-
- McGovern, Bryan
- McGovern, Jimmy, 1890-1984
- McGovern, John, V.C., 1825-1888
- McGovern, Margaret, (née Connor) (previously Crowe), fl. 1917-1919
- McGovern, Patrick, c.1842-1933
- McGovern family
- McGowan, Donald,
- McGowan, James, 1877-1955
- McGowan, Josephine (Josie), d.1918
- McGrane, John, 1871-1950
- McGrath, Catherine (Kate the Navvy), c.1827-1887
- McGrath, Dara
- McGrath, George, fl. 20th century
- McGrath, James, fl. 1790-1868
- McGrath, James, fl. 1950
- McGrath, James Kwin, Colonel, 1925-1999
- Mcgrath, Joe, d. 1972
- McGrath, Joseph (‘Joe’), 1888-1966
- McGrath, Joseph,
- McGrath, Matt, fl. 1920
- McGrath, Matthew John ('Matt'), 1876-1941
- McGrath, Maurice, fl. 1921
- McGrath, Michael, bishop, 1882-1961
- McGrath, Miler, d. 1622
- McGrath, Niamh, 1968-2005
- McGrath, Nicholas, fl. 1855-1860
- McGrath, Patrick James (Packy Jim), b.1933
- McGrath, Raymond, 1903-1977
- McGrath, Teresa (Annie), 1865-1907
- McGrath, Thomas, 1916-1990
- McGrath, Timothy Edward, Fr., 1881-1977
- McGrath, Tom, 1911-1991
- McGrath, Tom, Colonel, 1888-1977
- McGrath, Tom, Fr., fl. 1923-1987
- McGrath, Walter, d. 2006
- McGrath family
- McGready, James, fl. 1825
- McGreevy, Thomas, fl. 1930-1954
- McGregor, James, d.1729
- McGregor, James, fl.1718
- McGregor family
- McGriff, Patrick
- McGrory, James, 1881-1952
- McGuckian, A. A., d. 1952
- McGuckian, Alexander Aloysius (1895–1952)
- McGuckin, (Bartholomew) Barton, 1852–1913
- McGuckin, Edward, 1833-1864
- McGuckin, Felix, 1836-1899
- McGuckin, Henry, 1800-1899
- McGuckin, James Maria, 1835-1903
- McGuckin family
- McGuffin, John, 1942-2002
- McGuigan, Barry, 1961-
- McGuigan, James Charles, 1894-1974
- McGuinness, (James) Martin (Pacelli), 1950-2017
- McGuinness, Charles, 1893-1947
- McGuinness, Charles John
- McGuinness, Charles John, 1893-1947
- McGuinness, Charlie
- McGuinness, Frank, 1953-
- McGuinness, Frank, 1953-,
- McGuinness, Frank, b. 1953
- McGuinness, Joseph (‘Joe’), 1875-1922
- McGuinness, Joseph (‘Joe’), 1875–1922
- McGuinness, Martin, 1950-
- McGuinness, Martin, d.2017
- McGuinness, Norah, 1901-1980
- McGuinness, Norah Allison, 1901-1980
- McGuinness, Seán, 1899-1978
- McGuinness family
- McGuire, Eamon
- McGuire, Edward, 1932-
- McGuire, Edward, 1932-1986
- McGuire, Edward Augustine, 1901-1992
- McGuire, James, V.C., 1827?-post-1863
- McGuire, James I., 1943-
- McGuire, James I., 1943-,
- McGuire, Martin, (d) 1964
- McGuire, Paddy, 1922-2011
- McGuire, Peter James, fl. 1900
- McGuire, William, fl. 1793-1840
- McGuire family (in California)
- McGuirk, Charles Francis, 1834-1911
- McGuirk, Margaret (née Field), 1893-1942Nally, Peggy (née McGuirk) fl 1953-1956
- McGuirk, Tony
- McGurk, Bryan
- McGwire, Richard, fl.1785
- McGwire family
- McHale, Gerturde (née O'Reilly), 1922-2016
- McHale, John, archbishop of Tuam
- McHale, John, bishop, 1791-1881
- McHale, John, fl. 1898
- McHenry, James, 1785–1845
- McHenry, James, 1880-
- McHenry, Lawrence Henry, d. 1846
- McHugh, Anna May, 1934-
- McHugh, Charles, Bishop of Derry, 1852 1856-1926
- McHugh, Charles, Bishop of Derry, 1856-1926
- McHugh, Edward
- McHugh, Edward, 1853-1915
- McHugh, family
- McHugh, Ignatius B., d. 1968
- McHugh, Joe, T.D., b.1971
- McHugh, Michael, 1873-1924
- McHugh, P.A., 1859-1909
- McHugh, Thomas 'Tom', 1877-1957
- McHugo family
- McIlmoyle, Robert John, 1875-1965
- McIlrath family
- McIlroy, Anne Louise, 1874 - 1968
- McIlroy, Mary French, 1900-1983
- McIlvanney, William, 1936-
- McIlwaine, William
- McInerney, Michael, d. 1980
- McInerney, Patrick, 1898-1981
- McInerney family
- McIntosh, James, 1887-1921
- McIntyre, George, d.1917
- McIntyre, Patrick, d. 1916
- McIntyre family
- McKaragher, Charles, fl. 1718
- McKay, Alexander, 1850-1878
- McKay, Claude (Festus Claudius), 1889-1948
- McKay, Henry, 1819-1907
- McKay, James, 1837-1913
- McKay, John
- McKay, Patrick, 1835-1923
- McKay, Willie
- McKay family
- McKay femily
- McKeagney, Johnny, d.2010
- McKeague, John Dunlop, 1930-1982
- McKee, Bob, 1950-2010
- McKee, Dick, 1893-1920
- McKee, Eamonn
- McKee, George, RIC, fl. 1915
- McKee, Richard
- McKee, William, 1955-
- McKee family
- McKeegan family
- McKelvey, Frank, 1895-1974
- McKelvey, Joseph, 1898-1922
- McKenna, David ; Doyle, John ; Tóibín, Colm ;
- McKenna, Dermot, 1942-2014
- McKenna, Family
- Mckenna, Jack, 1917-2018
- McKenna, James, 1878-1946
- McKenna, James, 1933-2000
- McKenna, Jim, fl.c.1877-1912
- McKenna, John
- McKenna, John, 1743-
- McKenna, John, 1882-1907
- McKenna, Joseph, fl.1889-1900
- McKenna, Kathleen, 1897-1988
- McKenna, Kevin, 1934-2014
- McKenna, Liam, 1920-2013
- McKenna, Michael, c.1890-1921
- McKenna, Pat, 1938-1993
- McKenna, Patrick, 1870-1958
- McKenna, Patrick, Bishop, 1868-1942
- McKenna, Patrick, Bishop, fl. 1910-1920
- McKenna, Peter A.
- McKenna, Sarah, fl. 1736
- McKenna, Siobhán, 1923-1986
- McKenna, Stephen, b. 1939
- McKenna, Theobald
- McKenna family
- McKenzie, William, fl. 1795
- McKeown, Michael, c.1854-1932
- McKeown, Micheál, d.2023
- McKeown, Mona, 1904-1985
- McKeown, William, b. 1962
- McKiernan, Eoin, 1915-2004
- McKillen, Paddy (Snr), 1924-2023
- McKillop, Annie, 1920-2011
- McKillop, Dennis, d. 2001
- McKinney, Hester, d. 1902
- McKinney, Hugh Giffen, 1846-1930
- McKinney, Tom, 1893-1916
- McKinney family
- McKinstry, Harriet, 1854-1930
- McKitterick family
- McKittrick, P.
- McKnight, Elizabeth (Lizzie) (née Sullivan), c.1858-1925
- McKnight, James
- McKnight, William James, 1856-1937
- McLachlan, John, 1908-
- McLarnin, Jimmy, 1907-
- McLarnin, Jimmy, 1907-2004
- McLarnon, Francis, Dean, d. 2004
- McLaughlin & Harvey
- McLaughlin, Archibald, fl.1823-64
- McLaughlin, Biddy, b. 1831
- McLaughlin, Dermot 1961
- McLaughlin, Neal, fl. 1823-27
- McLaughlin, Pat, d.1935,
- McLaughlin, Peter, Bishop of Derry, 1760-1840
- McLaughlin, Thomas, 1896-1971
- McLaughlin, Thomas, d. 1957
- McLaughlin, Thomas Anthony, 1896-1971
- McLaughlin family
- McLaverty, Michael, 1904-1992
- McLean, George Hugh, 1888-1971
- McLean, John, d. 1920
- McLean, Michael, d.1920
- McLeer, James, fl. 1864
- McLeoane family
- McLeod, Donald
- McLintock, James, 1805-1878
- McLoughlin, Ella, 1905-
- McLoughlin, Ella b. 1905
- McLoughlin, John
- McLoughlin, Patrick Kevin (Pat), 1946-2015
- McLoughlin, Seán, 1895-1960
- McLoughlin, Thomas, 1896-1957
- McLoughlin family
- McLysagh, Brian, c.1600-c.1653
- McLysaght, Edward, 1887-1986
- McMahon, (née O Halloran), Mary, fl. 1785
- McMahon, Anthony, fl.1675-1729
- McMahon, Arthur A, d. 1714
- McMahon, Hugh, bishop, d. 1737
- McMahon, Owen, 1865-1922 and family
- McMahon, Patrick
- McMahon, Patrick, 1831-1910
- McMahon, Patrick, bishop, 1758-1836
- McMahon, Ralph
- McMahon, William, fl. 1849
- McMahon, William, fl. 1849-1905
- McMahon family
- McManus, Anna, née Johnston, see Carbery, Ethna, 1866-1902
- McManus, Anna Johnston, 1864-1902
- McManus, Anna Johnston, see Carbery, Ethna, 1866–1902
- McManus, Charlotte Elizabeth, 1850-1941
- McManus, Mary Margaret,1888-1944
- McManus, Patrick, 1864-1929
- McManus, Peig (1939-
- McManus, Seamus, 1868-1960
- McManus, Seán, Fr.
- McMath, George, d. 1903
- McMenamin, Seamus, 1912-2006
- McMicken, Robert, fl. 1840
- McMinn, Francis, b. 1680
- McMonagle, Charles,
- McMullan, James, 1860-1916
- McMullan, William, 1824-1901
- McMullan family
- McMullen, Gibson, fl. 1852
- McMullen, William, 1888–1982
- McMullin, Catherine, d. 2024
- McMurray, John, fl. 1880
- McMurrough Kavanagh family
- McMurrow family
- McMurtry, Alfred Dykes, 1895-1978
- McNab, Andy
- McNabb, Vincent, 1868-1943
- McNabb, Vincent, O.P.
- McNaghten, John, 1722-1761
- McNally, Charles, 1787-1864
- McNally, Clare, d.1918
- McNally, Elizabeth (Bessie), fl. c.1907-c.1910
- Mc Nally, John, 1833-1908
- McNally, Johnny, 1906-
- McNally, Leonard, 1752-1820
- McNally, Walter, c.1884-1945
- McNamara, Brinsley (John Weldon), 1890–1963
- Mcnamara, Brinsley, 1890-1963
- McNamara, Brinsley, 1890-1963
- McNamara, Cornelius, 1896-1957
- McNamara, James Augustin, fl. 1816-1818
- McNamara, John, 1806-1850
- McNamara, Kevin, archbishop, 1926-1987
- McNamara, Kevin, bishop, 1926-1987
- McNamara, M. J., 1885-1925
- McNamara, Patrick J., 1869-1927
- McNamara, Paul
- McNamara, Shelley ; Farrell, Yvonne
- McNamara family
- McNamee, Eileen, 1893-1912
- McNamee, Eileen 1893-1912
- McNamee, Eoin, 1961-
- McNamee, Neal, 1884-1912
- McNamee, Neal 1884-1912
- McNamee, Patrick, fl. 1975-2021
- McNaughton, John, d. 1761
- McNeale, Archibald, d.1696
- McNeale, Malcolm, fl. 1694-1731
- McNeale family
- McNeelan, John, fl. 1773
- McNeice, John Frederick, Bishop of Conor, 1934-42
- McNeile family
- McNeill, (Timothy) James, 1869-1938
- McNeill, Ada, 1860-1959
- McNeill, Bréid, d. 2006
- McNeill, D.J.
- McNeill, Janet, 1907-
- McNeill, Ronald John, Baron Cushendun, 1861–1934
- McNeill, Stephen, c.1944-2016
- Mc Neill family
- McNeill family
- Mcnemara, George, fl. 1737-1756
- McNemarra, Donatus (Donnchadh Mac Conmara), fl. 1580
- McNevin family
- McNichol, Chester, 1891-1982
- McNicholas, John T., Archbishop, 1877-
- McNicholl, Gerald, 1911-1980
- Mc Nicol, Donald, 1735-1802
- McNiocaill, Heneas, fl 1541
- McNulty, Dean, 1829-1922
- McNulty, family
- McNulty, Peadar, 1890-1948
- McNulty family
- McNulty Mauchly Antonelli, Kathleen (Kay), 1921-2006
- McParlan (McParland), James, 1844-1919
- McParland, James, 1844-1919
- McParland, Peter, 1947-2011
- McPartlin, Jim
- McPeake family
- McPhail, Frank, fl. 1950-2000
- McPhail, Mary née Dowdall, fl. 1950-2000
- McPhail, William, 1820-1897
- McPherson, Conor, 1971-
- McPolin, Francis, 1897-1974
- McQuaid, Alister, 1955-2006
- McQuaid, John Charles, archbishop, 1895-1973
- McQuaid, John Charles, Archbishop, 1895-1973
- McQuaid, John Charles, archbishop, 1895–1973
- McQuaid, John Charles, bishop, 1895-1973
- McQuaid family
- McQuillan, Lucy (née Byrne), 1911-2005
- McQuillan, Róisín
- McQuillan, William F., d.1945
- McQuoid, Alister, 1955-2006
- McRedmond, Louis
- McReynolds, Andrew Thomas, General, 1808-1898
- McRory, James, Rev.
- McShain, John, d.1989
- McShane family
- McSorley, Edward
- McSparran, Malachy, fl.1965-2008
- McSweeney, Edward, fl. 1920-1930
- McSweeney, John, d.1922
- McSweeney, Johnny, 1881-1923
- McSweeney, Patrick L., 1918-1994
- McSweeney, William Jasper (Jack), 1899-1942
- McSweeny, Conor, fl. 1843-1844
- McSweeny, Conor, fl1843
- McSweeny, George, d. 1923
- McSwiggan, Tom, fl. 1998
- McSwiney, Daniel, Fr., 1797-1845
- McSwiney, Patrick, 1790-1865
- McSwiney, Peter, 1783-1860
- McSwiney, Peter, 1787-1860
- McSwiney, Terence James, 1879-1920
- McTier, Martha (née Drennan), c.1743-1837
- McTier, Martha, c.1744-1837
- McTigue, Mike, 1892-1966
- McVail, John, fl. 1897-1913
- McVeigh, Aloysius, Sr, d.2008
- McVeigh, Jimmy, b.1931
- McVeigh, Joe
- McVeigh, Joe, b. 1945
- McVeigh family
- McWhidd, Alexander
- McWhidd, Alexander c. 1610-c.1690
- McWilliam, Frederick Edward, 1909-1992
- McWilliams, Catherine, 1961-2004
- McWilliams, F. E., 1909-1992
- McWilliams, Hugh, fl. 1831
- McWilliams, Monica, 1954-
- Meade, Elizabeth Thomasina, 1844-1914
- Meade, John, 1st earl of Clanwilliam, 1744-1800 ; Magill, Theodosia, Countess of Clanwilliam, 1743-1817
- Meade, Joseph Michael, 1839–1900
- Meade, L. T. (1844?-1914)
- Meade, L. T. (Elizabeth (‘Lillie’) Thomasina Toulmin Smith), 1844?–1914
- Meade, Michael, 1814-1866
- Meade, Michael, 1814-1886
- Meade, William Richard, fl. 1845
- Meade family
- Meaghar, Patrick, c.1770-1834
- Meagher, Henry, c.1852-1896
- Meagher, John
- Meagher, John Francis
- Meagher, Margaret (O'Halloran) née Sheehy, c.1837-1912
- Meagher, Michael, fl. 1878
- Meagher, Niall, 1919-2014
- Meagher, Thomas, 1796-1874
- Meagher, Thomas Francis
- Meagher, Thomas Francis (1823-1867)
- Meagher, Thomas Francis, 1823-1867
- Meagher family
- Meaney, Edward, c.1887--1917
- Meaney, Patrick, d. 1920
- Meaney, Richard J., Fr., fl. 1895
- Meany, George, 1894-1980
- Meany, James, fl. 1798
- Meany, Patrick, 1816-1896
- Meany, Stephen Joseph, d. 1888
- Mease, James, 1732-1785
- Mease, John, 1740-1826
- Mease, Matthew, 1729-1787
- Meates, Roly, fl. 1995
- Meathaile, Séamas, see Mottley, James, d.1756
- Mecgyllsaghta, Donald (son of Edmund), fl.1559
- Mecredy, Richard James, 1861-1924
- Mecredy, Richard James Patrick, 1861-1924
- Medb
- Medb (Maeve), Queen of Connaught
- Medb, Queen
- Medb Chruachna (‘of Cruacha’), queen of Connacht
- Medh, Queen
- Medici, Cosimo III de', 1642-1723
- Medlar, P.J., 1885-1949
- Medlar family
- Mee, Jeremiah, 1889-1953
- Mee, Jeremiah, 1889–1953
- Mee, Jerry, fl. 1921
- Meehan, C.P. (Charles Patrick), 1812-1890
- Meehan, Charles, O.F.M., 1645-1679
- Meehan, Charles, OFM, 1645-1679
- Meehan, Denis, fl. 1930-1970
- Meehan, Frank, 1928-2012
- Meehan, James, d. 1826
- Meehan, John, 1936-2020
- Meehan, Michael, Fr, d.1878
- Meehan, P. A., 1852-1913
- Meehan, Patrick J., 1831-1906
- Meehan, Patrick Joseph, M.P.
- Meehan, Paula
- Meehan, Paula, 1955-
- Meehan, Philip 1845-1880
- Meehan, Sylvia, 1929-2018
- Meehan, Winifred (Sr Bernard), fl.1899-1955
- Meeke, John, fl. 1914-1920
- Mee [née Brown; other married name Bartlett], Margaret Ursula, 1909–1988
- Megaw, Helen Dick, 1907-2002
- Meghen, Patrick Joseph, 1900–71
- Mehegan, Cormac,
- Mehring, Franz
- Meic Aodhagáin
- Meic Catháin family
- Meic Craith family ; O'Griffa, Matthew, fl.1555-1589 ; Uí Bhriain family
- Meic Fhlannchadha family
- Meidinger, Heinrich
- Meier, Juhn Alexander, fl.1930-1948
- Meighan, Michael, 1771-1847
- Meilyr Brydydd, poet, fl. 1100-1137
- Mel, saint, d. 487
- Melberg, Hakon, 1911-1990
- Melberg, Hakon, 1911- 1990
- Melichar, Bob, ?1906-post1988
- Mellefont family
- Mellon, family
- Mellon, Maeve
- Mellon, Paul, 1907-1999
- Mellon, Thomas, 1813-1908
- Mellows, Liam
- Mellows, Liam (William Joseph), 1892-1922
- Mellows, Liam (William Joseph), 1892–1922
- Mellows, Liam, 1892-1922
- Mellows, Liam, 1892–1922
- Mellows, William Joseph (‘Liam’), 1892-1922
- Melvill (Melville), David, fl 1759-1770
- Melville, -, natural historian, fl. 1849-1914
- Melville, Alexander Gordon, 1819-1901
- Melville, William, 1850-1918
- Melville, William, 1852-1918
- Melville, William, 1852–1918
- Mercator, Gerard, d. 1594
- Mercator, Gerardus, 1512-1594
- Mercer, Mary, c.1670-1735
- Mercer family
- Mercier, Vivian, 1919-1989
- Meredith, Henry, c.1775-c.1841
- Meredith, James Creed, 1875-1942
- Meredith, Lewis Boyle, 1875-1953
- Meredith, Thomas, d. 1819
- Meredith family
- Merian, Maria Sybilla, 1647-1717
- Merlin Ambrosius, legendary enchanter and bard
- Mernagh, John, d. 1857
- Mernagh, Nicholas, d. 1996
- Mero, family
- Merrick, Emily, fl. 1826-1838
- Merrifield, Leonard Stanford, 1880-1943
- Merrigan, James, fl. 1744
- Merrigan, Joan, 1932-2016
- Merrigan, Matt
- Merrigan, Matt, 1921-2000
- Merrigan, Michael Joseph, 1926-1994
- Merrigan family
- Merriman, Brian, c.1749-1805
- Merriman, Brian, c. 1749-1805
- Merriman, Brian, c.1750-1805
- Merriman, P. J., 1877-1943
- Merriman, William, d. 1617
- Merritt, Michael Thomas, fl. 1805
- Merry, Cornelius
- Mertz, John, d.1870
- Mervyn, Audley, Sir, d. 1675
- Mervyn, Audley 1603-1675
- Meskell, Senan, 1880-1962
- Mesmes, Jean Antoine de, Comte d'Avaux
- Mespoulet, Marguerite, fl.1913
- Messingham, Thomas, c.1575-1638?
- Messingham, Thomas, d. 1638?
- Messingham, Thomas, fl. 1624
- Messitt, John, c.1895-1918
- Messitt, Thomas, fl. 1914-1930
- Metcalfe, Joseph
- Metcalfe, Maureen, d.2011
- Metcalfe, Percy, 1895-1970
- Metcalfe Mackie, Kathleen, Isabella
- Metge, Lilian (née Grubb), 1871-1954
- Methodius, Saint, d. 885
- Metsu, Gabriel, 1629-1667
- Mey, John, bishop, d. 1456
- Mey, John, bishop, d.1456
- Meyer, James Gribbon, 1845-1897
- Meyer, James William, 1816-1888
- Meyer, Kuno, 1858-1919
- Meyer, Kuno, 1858–1919
- Meyer, Rudolphus, c.1779-c.1850
- Meyer family
- Meyler, Robert, d. 1581
- Meyler, Walter, Dean, c.1784-1864
- Meyler, Walter Thomas, 1813-
- Meynell, Alice Christiana Gertrude, d. 1922
- Mezzafalce, Giovanni Donato, 1661-1720
- Mhac an tSaoi, Máire, 1922-
- Mhac an tSaoi, Máire, b. 1922
- Mheic Bhruaideadha, Tadhg mac Dáire, c.1570- c.1652
- Mhic Choisdealbha, Eibhlín, c.1870-1962
- Mhic Craith, Brighid ,1923-2016
- Mhic Ghrianna, Sorcha Chonaill, 1875-1964
- Mi'kmaq First Nations
- MicConmara family
- Michael, friar, of Kildare
- Michael, saint, the archangel
- Michan, Saint
- Michelangelo
- Michelburne, John, d. 1721
- Mickiewicz, Adam Bernard, 1798-1855
- MicMhurchadha family
- Middleton, Charles, 2nd earl of Middleton and Jacobite 1st earl of Monmouth, 1649x50-1719
- Middleton, Charles, 2nd earl of Middleton and Jacobite first earl of Monmouth, 1649x50-1719
- Middleton, Colin, 1910-1983
- Middleton, John, 1st earl of Middleton, c.1608-1674
- Midgley, Harry (Henry Cassidy), 1893-1957
- Midgley, Harry, 1892-1957
- Midgley, Henry Cassidy ('Harry'), 1892-1957
- Midgley, Henry Cassidy (‘Harry’), 1892–1957
- Midheach, Tomás, fl.1730
- Mignon, Madeleine, fl.1913
- Miguel I de Portugal. Rey de Portugal, 1828-1834
- Mildred (née Mann), Leslie, 1903-2001
- Miles, George Francis [Frank], 1852–1891
- Miles, John Francis Marshall, 1847-1912
- Miley, John, 1805?-1861
- Mill, John Stuart, 1806-1873
- Millar, Frank
- Millar, Jan L.
- Millar, John
- Millar, Richard David, d.194?
- Millar, Roly, 1916-
- Millar, Thomas, 1819-1858
- Millard family
- Millar family
- Millelt, Benignus (Austin), Father, 1922-2006
- Millen, 'General', fl. 1865-1887
- Miller, George
- Miller, Kerby
- Miller, Kerby A.
- Miller, Liam (1924-1987)
- Miller, Liam, 1924-1987
- Miller, Linus Wilson, 1817-1880
- Miller, Nick, b.1962
- Miller, Nick, b. 1962
- Miller, Nyle H.
- Miller, Robert, fl. 1755
- Miller family
- Milles, Jeremiah, 1714-1784
- Milles, Thomas, bishop, fl.1700-1740
- Milles, Thomas, bishop of Waterford and Lismore, 1671–1740
- Millett, Benignus (Austin), Fr, 1922-2006
- Millevoye, Lucien, 1850-1918
- Milligan, Alice
- Milligan, Alice, 1866 - 1953
- Milligan, Alice Leticia, 1866-1953
- Milligan, Alice Leticia, 1866–1953
- Milligan, Alice Letitia, 1866-1953
- Millin, Samuel Shannon
- Millin, Samuel Shannon, 1864-1947
- Millin, Terence, 1903-1980
- Milling, John Charles, 1873-1919
- Millis, George, fl. 1753
- Mills, Charles, fl. 1918
- Mills, John
- Mills, John Alexander, 1929-2015
- Mills, Kay, 1923-1996
- Mills, Michael, 1927-2008
- Mills, Minnis, 1904-1982
- Mills, William Hemingway, 1834-1918
- Milmore (Milmoe), Martin, 1844-1883
- Milne, James Napier, 1841-1918
- Milne, King, 1919-2002
- Milner, Alfred, viscount Milner, 1854- ; Eyre, Edward John
- Milner, John, bishop, 1752-1826
- Milner, John, Bishop of Castabala, 1752-1826
- Milton, John, 1608-1674
- Milton, John, 1608-1674 ; Shakespeare, William, 1564-1616
- Minchin, George, d. 1875
- Minchin family
- Minck family
- Mingay, Gordon Edmund, 1923-2006
- Minihan, John, b. 1946
- Minihan, John, b.c.1947
- Minihan, Michael, 1845-1891
- Miniter family
- Minter, Mary Miles, 1902-1984
- Minto family (of Drogheda)
- Mistéal, Seán
- Mitchel, James Verner, fl.1840-1865
- Mitchel, Jane (Jenny), c.1820–1899
- Mitchel, Jane (Jenny), née Verner, 1820?-1899
- Mitchel, Jane, née Verner, 1820?-1899
- Mitchel, Jenny, 1820-1899
- Mitchel, John (1815–1875),
- Mitchel, John, 1781-1840
- Mitchel, John, 1815-75
- Mitchel, John, 1815-1875
- Mitchel, John, 1815-1875,
- Mitchel, John C., 1838-1864
- Mitchel, William Haslett, c.1843-1862
- Mitchelburne [Michelborne], John, 1648–1721
- Mitchell, (Marian Houghton) Máirín, 1895-1986
- Mitchell, Alex, hardware merchant, d. 1823
- Mitchell, Alexander, 1780-1868
- Mitchell, Frank, 1912-1997
- Mitchell, Gary, 1965-
- Mitchell, Gary, b.1965
- Mitchell, Gay, 1951-
- Mitchell, George, 1925-
- Mitchell, George, 1933-
- Mitchell, Hugh
- Mitchell, Hugh Henry
- Mitchell, John, 1789-1865
- Mitchell, John, 1815-1875
- Mitchell, John, c.1870-1914
- Mitchell, Joseph, 1908-1996
- Mitchell, Margaret, d. 1949
- Mitchell, Mary B.
- Mitchell, Sadie
- Mitchell, Susan Langstaff, 1866-1926
- Mitchell, Susan Langstaff, 1866–1926
- Mitchell family
- Mitchison, Naomi Mary Margaret, Baroness Mitchison (née Haldane), 1897-1999
- Mo-Ling Luachra (Dairchell, Tairchell), d. 697
- Mo-ling Luachra, (Dairchell, Tairchell), d.697
- Mobhí Cláirineach, (?Berchán), saint, d.544/545
- Mochaoi, Saint
- Mochaomhóg, Saint
- Mocheallóg, Saint, C. 600
- Mocheallóg, Saint, c.600
- Mochta of Louth, Saint
- Mochua, saint, c.570-630
- Mochuda of Lismore, Saint
- Mochulla, Saint, 7th cent
- Modwenna, Saint, d. 517
- Moeller, Hans, 1911-1940
- Moeran, E.J. (Ernest John), 1894-1950
- Moffat, Charles Bethune, 1859-1945
- Moffet, Benjamin, 1845-1914?
- Moffett, Noel, 1912-1994
- Moffett, Thomas William, Sir, 1820-1908
- Moffett family
- Mogue, Saint
- Moira, Elizabeth Rawdon, countess of, 1731-1808
- Molag(g)a (Lóichín), saint
- Molaga, Saint, -?664
- Molaise, Saint, d.564
- Moland, Thomas, fl. 1703
- Moland, Thomas, fl.1703
- Moles, Thomas
- Moles, Thomas, Sir, 1871-1937
- Molesworth, Guy, colonel, fl.1640-1663
- Molesworth, Lettice, fl. 1715-1722
- Molesworth, Robert, 1656-1725
- Molineaux, Tom, 1784-c.1818
- Moling, Saint
- Moling, saint see Mo-Ling Luachra (Dairchell, Tairchell), d. 697
- Moll, Herman, d. 1732
- Mollahan family
- Molloy, Clement, 1877-1951
- Molloy, Francis, O.F.M.
- Molloy, Francis, OFM
- Molloy, James Lynam, 1837-1909
- Molloy, Karina
- Molloy, Mary
- Molloy, Michael
- Molloy, Michael, 1777-1846
- Molloy, Richard
- Molloy family
- Molluag, Saint, 530?-592
- Mologa, Saint, fl. 600
- Moloney, Cornelius, fl.1786-1853
- Moloney, Helena, 1883-1967
- Moloney, John, -1881
- Moloney, Joseph A., fl. 1896-1908
- Moloney, Michael, 1894-1964
- Moloney, Michael, d. 1831
- Moloney, P.J., 1869-1947
- Moloney, Patrick, 1846-1882,
- Moloney family
- Molony, c.1838-1886
- Molony, Dennis, 1650-1726
- Molony, Edward, d.1843
- Molony, Helena, 1883-1967
- Molony, Helena Mary, 1883-1967
- Molony, James, 1785-1874
- Molony, John, c.1790-1820
- Molony, William Mills, 1825-1891
- Molony family
- Molua, Saint
- Molua, Saint, 554-609
- Molyneaux, James Henry, baron Molyneaux, 1920-
- Molyneux (Molyneaux), William, 1656-1698
- Molyneux (Molyneaux), William, 1656–1698
- Molyneux, Capel, Sir
- Molyneux, Samuel (1689-1728)
- Molyneux, Samuel, 1689-1728
- Molyneux, Samuel, 1689-1728,
- Molyneux, Sir Thomas, 1661-1733
- Molyneux, Thomas, 1661-1733
- Molyneux, Thomas, 1661–1733
- Molyneux, Thomas, Sir 1661-1733
- Molyneux, William, 1656-1698
- Molyneux, William, 1715?-1774
- Molyneux family
- Monagan family
- Monaghan, Charles A.
- Monaghan, James, 1945-
- Monaghan, Michael, d.1923
- Monaghan, Peter
- Monaghan, Sarah (née Cunningham), b.1923
- Monahan, John, 1918-1992
- Monahan, Michael, bishop, b.1812
- Monahan, Philip, 1893-1983
- Monck, Charles, d.1751
- Monck, George, 1st duke of Albemarle, 1608-1670
- Monck, William, H. S., 1839-1915
- Monck family
- Monckton family
- Monenna (Darerca) fl 530
- Monenna, Saint
- Moneypenny, Arthur, fl. 1865
- Mongan, Michael J., 1863-1903
- Mongan family
- Mongey, Laurence, 1895-1972
- Mongey, Mary Michael, fl.1925-75
- Mongán mac Fiachnai
- Monkhouse, Christopher Pruyn, 1947-2021
- Monks, Pat, fl.1864-1929
- Monkswell, Mary Jospehine Hardcastle Collier, baroness, 1849-1930
- Monro, Henry, fl. 1798
- Monro, Robert, c.1590-1680
- Monro, Robert d.1675?
- Monro, Samuel, 1846-1925
- Monroe, Dorothea (Dolly), 1754-1793
- Monroe family
- Monsel (Maunsel), Henry fl.1238
- Monsell, John Samuel Bewley, L.L.D., 1811-1875
- Monsell, William, 1st baron Emly, 1812-1894
- Monsell, William, M.P., 1812-1894
- Monsell family, barons Emly
- Monson, Alfred John, fl. 1893-1894
- Monson, Cecil Godfrey, d. 1974
- Montagu, Edward, 2nd earl of Manchester, 1602-1671
- Montague, Annie Margaret, fl. 1880-1892
- Montague, Daniel, 1867-1912
- Montague, John, 1929-
- Montague, Mary Helen, d. 1892
- Montalembert, Charles Forbes René, comte de, 1810-1870
- Montalembert, Charles Forbes René, comte de, 1810-1870, 1810-1870
- Montcalm-Gozon, Louis Joseph de, Marquis de Saint-Veran, 1712-1759
- Monteagle family, lords Monteagle
- Montefiore [née Fuller], Dora Frances Barrow, 1851–1933
- Monteith, Robert, 1878-1956
- Monteith, Robert, 1879-1956
- Montesquieu, Charles Louis de Secondat, Baron de, 1689-1755
- Montessori, Maria, 1870-1952
- Montez, Lola, c.1816-1861
- Montgomerie, Archibald William, 14th Earl of Eglinton, 2nd Earl of Winton, 1841-1892
- Montgomerie, Archibald William, 1812-1861
- Montgomerie, Hugh, d.1741,
- Montgomerie family
- Montgomery, Bernard Law, 1st viscount Montgomery of Alamein, 1887-1976
- Montgomery, family
- Montgomery, Gabriel, fl.1795-1805
- Montgomery, George, bishop, c.1569–1621
- Montgomery, George, d. 1621
- Montgomery, Henry, 1788-1865
- Montgomery,Henry Cunningham, 1765-1830
- Montgomery, Henry Hutchinson, 1847-1932
- Montgomery, Hugh, major-general
- Montgomery, Hugh 1st Earl of Mount Alexander, c. 1623-1663
- Montgomery, Hugh de Fellenberg
- Montgomery, John, 1803-1878
- Montgomery, John, fl.1931
- Montgomery, Niall, 1915-1987
- Montgomery, Richard, 1736-1775
- Montgomery, Richard, 1738-1775
- Montgomery, Rory
- Montgomery, Susan (née Steynings), d.1614
- Montgomery, William, 1633-1707
- Montgomery family
- Montiagh family
- Montégut, Emile, 1825-1895
- Monypenny, William Flavelle, 1866-1912
- Monypenny, William Flavelle, 1866–1912
- Mood, John Musprat, O.B.E., M.C., fl. 1906-1943
- Moody, Dwight Lyman, 1837-1899
- Moody, Jim Carleton, 1926-1982
- Moody, Jimmy, 1941-
- Moody, R.
- Moody, Theodore William, 1907-1984
- Moody family
- Moon, John McKay, 1901-1960
- Mooney, Canice, OFM, 1911-1963
- Mooney, Daniel, fl. 1876
- Mooney, Donagh, O. F. M.
- Mooney, Donagh, OFM, 1577-1624
- Mooney, Herbert Francis, d.1964
- Mooney, James, 1861-1921
- Mooney, Thomas, 1801-
- Mooney Family
- Mooney family
- Moon family
- Moony, Mary Enraght, c.1863-1925
- Moony family
- Moore (née Feilding) Dorothie, 1889-1935
- Moore, (William) Arthur, 1880-1962
- Moore, Acheson, 1685-1770
- Moore, Alexander, 1922-
- Moore, Annie, 1877-1923
- Moore, Barrington, 1913-
- Moore, Bartholomew, 1894-1957
- Moore, Billy, 1752-1840
- Moore, Brian, 1921-1999
- Moore, Charles, 6th Earl of Drogheda, [later 1st marquess of Drogheda] (1730–1822)
- Moore, Christy, 1945-
- Moore, David, 1807-1879
- Moore, David, 1808–1879
- Moore, David, c.1786-1845
- Moore, Desmond F., d. 1999
- Moore, Dorothy, c.1613-1664
- Moore, Elaine, 1966-
- Moore, Eliza, d.1884
- Moore, Frederick William, Sir, 1857-1949
- Moore, Frederick William, Sir, 1857–1949
- Moore, Frederick William, Sir, 1857–1949,
- Moore, Garrett (‘Garry’), c.1850-1908
- Moore, George
- Moore, George, 1852-1933
- Moore, George, d. 1580
- Moore, George, d.1749
- Moore, George, fl. 1765-1768
- Moore, George Augustus, 1852-1933
- Moore, George Augustus, 1852–1933
- Moore, George Henry, 1810-1870
- Moore, Henry, 1751-1844
- Moore, Henry, 1784-1856
- Moore, Henry Kingsmill DD, 1853-1943
- Moore, Hugh
- Moore, James
- Moore, James, 1819-1883
- Moore, James, fl. 1786-1802
- Moore, James, fl. 1884
- Moore, James Joseph, 1892-1915
- Moore, James Patrick, 1875-1931
- Moore, John, 1726-
- Moore, John, 1763?-1799
- Moore, John, 1767-1799
- Moore, John, 1809-1897
- Moore, John, 1836-1922
- Moore, John, fl. 1760
- Moore, John, Sir, 1761-1809
- Moore, John, Sir, 1761-1809 ; Wolfe, Charles, 1791-1823 ; Plimpton, George Arthur, 1855-1936
- Moore, John, Sir, fl. 1636
- Moore, John Hubert, 1819-1904
- Moore, John J., 1873-1932
- Moore, Lawrence see Hill, Elizabeth, c1860-1915
- Moore, Louisa (née Browne), 1788-1861
- Moore, Margaret (née King), Lady Mount Cashell, 1772-1935
- Moore, Margaret Jane King, countess of Mount Cashell, 1772-1835
- Moore, Margaret King, 1772-1835
- Moore, Marguerite, 1846-1933
- Moore, Marianne, 1887-1972
- Moore, Mary Clare Augustine, Sr, 1808-1880
- Moore, Maurice George, 1854-1939
- Moore, Maurice George, 1854–1939
- Moore, Michael, 1640-1726
- Moore, R. H., fl. 1956
- Moore, Robert, 1877-1901
- Moore, Stephen, 3rd earl of Mount Cashell
- Moore, T. Sturge, fl. 1937
- Moore, Thomas
- Moore, Thomas, 1779-1852
- Moore, Thomas, 1779–1852
- Moore, Thomas, 1863-1926
- Moore, Thomas, d. 1840
- Moore, Thomas Landsdowne Parr, 1818-1846
- Moore, W., 1912-
- Moore, Wilhelmina Phylis, Lady, 1878-1976
- Moore, William, d. 1814
- Moore family
- Moorhouse family
- Moppett, family
- Morahan, Michael, Fr, 1914-1992
- Moran, Adelaide, fl. 1905
- Moran, Barney, 1779-1878
- Moran, D. P. (David Patrick), 1869–1936
- Moran, David Patrick, 1869-1936
- Moran, Frank Charles, 1887-post 1940
- Moran, Herbert Michael 'Paddy', 1885-1945
- Moran, James 'Ginger', 1889-1987
- Moran, Mary (née Drennan), d.2014
- Moran, Michael, 1794-1846
- Moran, Michael, 1857-1951
- Moran, Paddy, fl. 1921
- Moran, Patrick (Paddy), 1888-1921
- Moran, Patrick, 1823-1895
- Moran, Patrick, 1888-1921
- Moran, Patrick, d.1921
- Moran, Patrick Alfred Pierce, 1917-1988
- Moran, Patrick Francis, 1830-1911
- Moran, Patrick Francis, Cardinal, 1830-1911
- Moran, Patrick Francis, cardinal, 1830-1911
- Moran, Patrick Francis, cardinal, 1830-1911 : Meehan, Charles P., 1812-1890 ; Matthews, Eugene, archbishop ; O'Neill, Hugh, earl of Tyrone ; O'Donnell, Rory, earl of Tyrconnell
- Moran, Patrick Francis, Cardinal, 1830-1911,
- Moran, Robbie, fl 1929/1930
- Moran, Thomas, fl. 1926
- Morand [Morard] de Galles, Justin Bonaventure, 1741-1809
- Moran family
- Morant, George
- Mordaunt, Edward, fl. 1894-1917
- More, Alexander Goodman, 1830-1895
- More, Frances Margaret, d.1908
- More, Hannah, 1745-1833
- More, John
- More, Thomas, 1779-1852
- More, Thomas, Sir, Saint, 1478-1535
- More, Thomas, Sir, Saint, 1478-1535 ; Wentworth, Thomas, 1st Earl of Strafford, 1593-1641
- Morel, Edmund Dene, 1873-1924
- Moreland, James, fl. 1858-1875
- Moreland family, 1852-
- Moreton, William, bishop, 1641-1715
- Moreton, William, bishop of Kildare, fl. 1697
- Morgan, Daniel (1735?-1802)
- Morgan, Daniel, 1736-1802
- Morgan, Gerald L.
- Morgan, James, 1762-1843
- Morgan, James, 1799-1873
- Morgan, Jan Henry
- Morgan, Kenneth Owen
- Morgan, Lady Sydney and Clarke, Lady Olivia (Owenson)
- Morgan, Marcus Antonius, fl. 1735
- Morgan, Mary, d. 1749
- Morgan, Patrick (Brother Michael), 1892-1920
- Morgan, Philip Joseph
- Morgan, Sydney, Lady, bap. 1783, d. 1859
- Morgan family
- Moriarity, Patrick E., O. S. A.
- Moriarty, David, bishop of Kerry, 1814-1877
- Moriarty, David, Bishop of Kerry, 1814–1877
- Moriarty, Joan Denise, 1912-1992
- Moriarty, Joan Denise, 1912?-1992
- Moriarty, John Francis, d. 1915
- Moriarty, Matthew Trant, fl. 1847
- Moriarty, Michael
- Moriarty, Patrick, 1926-1997
- Moriarty, Sean, PP, d. 2005
- Moriarty, Thaddeus, O.P., d. 1653
- Moriarty, Thaddeus, O.P., d.1653
- Moritz, Franz Graf von Lacy, 1725-1801
- Morius, Hallam L., 1907-1987
- Morland, Thomas Lethbridge Napier, Sir, 1865-1925 ; Nugent, Oliver Stewart Wood, Sir, 1860-1926
- Morley, John, viscount Morley of Blackburn, 1838-1923
- Morphey, Garret, 1650?-1716 ; Pooley, Thomas, 1646-1723
- Morphy, Charles John, 1854-1913
- Morphy, Edward Alexander b.1867
- Morphy, Garret, 1676?-1716
- Morrell, Samuel, c.1734-1772
- Morrell family
- Morres, Hervey Montmorency, 1767-1839
- Morres, Hervey Montmorency, d. 1839
- Morrice, Roger, 1628-1702
- Morrill, John Stephen, 1946-
- Morrin, Patrick, P.P., fl.1846-1894
- Morrin, Patrick, P.P., pre-1816-1881
- Morris, Henry (Ó Muirgheasa, Énrí), 1872-1945
- Morris, Henry (Ó Muirgheasa, Énrí), 1874-1945
- Morris, Henry, 1874-1945
- Morris, Henry, d. 1945
- Morris, Henry, d. c.1945
- Morris, James, fl. 1916
- Morris, Jim, 1917-1982
- Morris, John, fl.1860-1919
- Morris, Lewis, 1701-1765
- Morris, Locky, b.1960
- Morris, Michael "Mouse", 1951-
- Morris, Michael, Sir, 3rd baron of Killanin, 1914-1999
- Morris, Patrick, 1789-1849
- Morris, Patrick, SJ
- Morris, Robert, 1823-1882
- Morris, Samuel, 1846-1920
- Morris, Tom, 1777-1841
- Morris, William, 1834-1896
- Morris, William, fl. 1798
- Morris, William O'Connor, 1824–1904
- Morris-Jones (formerly Jones), Sir John, 1864-1929
- Morris family
- Morrison (Ó Muirgheasáin) family
- Morrison, Ann
- Morrison, Daniel Gerard, b.1953
- Morrison, Danny, 1953-
- Morrison, George Ivan, 1945-
- Morrison, Ian Crawford, d. 1969
- Morrison, Mabel, 1847-1933
- Morrison, Richard, Sir, 1767-1849
- Morrison, Richard, Sir, 1767–1849
- Morrison, Richard, Sir, fl. 1840-1914
- Morrison, William Vitruvius, 1794-1838
- Morrison family
- Morrison family, fl. 1800-2000
- Morrisroe, Patrick, bishop, 1869-1946
- Morrissey, Patrick Joseph (P.J.), 1928-2015
- Morrissey, Sinéad, 1972-
- Morrissey, Sinéad, b.1972
- Morrissey, Thomas (Tabo), 1888-1962
- Morrisson, Arthur, 1765-1837
- Morritt, Robert, 1784-c.1843
- Morrogh, John, 1849-1901
- Morrogh, John D. (Jack), 1884-1954
- Morrogh-Bernard, Agnes (Mother Mary Arsenius), 1842–1932
- Morrogh-Bernard, Agnes, 1842-1932
- Morrogh family
- Morrogh family of Inis Beg
- Morrow, Adam, c.1887-1914
- Morrow, Andrew, d. 2006
- Morrow, Catherine, fl. c.1869-1953
- Morrow, Harry, 1865-1938
- Morrow, Robert G., c.1869-1946
- Morse, Samuel Finlel B., 1791-1872
- Mortimer, Jackson, b.1762
- Mortimer, Roger, 1287-1330, lord of Wigmore and 1st earl of March, Justiciar of Ireland
- Mortimer, Roger, 1374-1398, 4th earl of March and 7th earl of Ulster
- Mortimer, Roger, earl of March, 1287-1330
- Mortimer, Roger, earl of March, d. 1398
- Mortimer family
- Mortished, R.J.P., 1891-1957
- Morton, Alexander, 1844-1923
- Morton, Geoffrey, fl. 1303-1304
- Moryson, Fynes, 1566-1630
- Moscow, Harry, 1865-1938
- Moss, Arthur Bruce
- Mosse, Bartholomew, 1712-1759
- Mosse, Bartholomew, Dr. 1712-1759
- Mosse, William, Rev., fl. 1690
- Mossop, William, 1751-1805
- Motte, Benjamin
- Mottley, James, d.1756
- Mouat, James, Sir, 1815-1899
- Moubray, Hugh, fl.1791
- Moulden, John, 1941-
- Mountain, Peggy, fl. 1834
- Mountbatten, Louis Francis Albert Victor Nicholas, 1st earl Mountbatten of Burma, 1900-1979
- Mountjoy, Charles Blount, Lord
- Moutray, Anketell Gerald, b.1882
- Moutray, William, d. 1882
- Movius, Hallam L., 1907-1987
- Mowlam, Marjorie, 1949-2005
- Moylan, Francis, 1735–1815, Catholic Bishop of Cork
- Moylan, Francis, Bishop, 1735-1815
- Moylan, Francis, bishop of Cork, 1735-1815
- Moylan, Francis, Bishop of Cork, 1735-1815
- Moylan, Hannah, 1867-1902
- Moylan, Jack, 1930-2005
- Moylan, Martin, d.1923
- Moylan, Seán, 1889-1957
- Moylan Séamus
- Moynagh, Bishop James, 1903-1985
- Moynahan, Mortimer, fl. 1840
- Moynan, Richard, 1856-1906
- Moynan, Richard Thomas, 1856-1906
- Moyney, Jack, c.1895-1980
- Moyney, John, 1895-1980
- Moynihan, Jamie
- Moynihan, John, 1892-1964
- Moynihan, Maurice, 1902-1999
- Moynihan, Michael, 1891-1918
- Moynihan, Ruth B.
- Moynihan, Senan, 1900-1970
- Muintir Mhurchadha
- Muir, Edwin, 1887-1959
- Muirchertach Mac Lochlainn, d. 1166
- Muirchertach Ua Briain, king of Munster and high-king of Ireland, c.1050-1119
- Muirchú of the moccu Machthéni, late 7th/early 8th cent
- Muirchú of the moccu Machthéni, late 7th/early 8th cent.
- Muirchú of the moccu Machthéni, late 7th/early 8th cent. ; Adamnan, Saint, 625?-704
- Muireadhach Albanach Ó Dálaigh; Eochaidh Uí Eodhasa; Lúcás Mac Náimhín; Fionnghuala Mág Shamhradháin; Biddy Jenkinson; Nuala Ní Dhomhnaill; Seán Ó Ríordáin
- Mulally, Teresa (Ní Mhaolalaidh, Treasa), 1728 - 1803
- Mulally family
- Mulcahy, Catherine, fl.1865-67
- Mulcahy, Denis Dowling, 1837-1900
- Mulcahy, Edmund, 1823-1873
- Mulcahy, Jeremiah, Hodges, 1804-1889
- Mulcahy, John, d.2018
- Mulcahy, Richard, 1886-1971
- Mulcahy, Richard, 1886-1971,
- Mulcahy, Ristéard
- Mulcahy, Rosemary, 1942-2012
- Mulchay, Ellen, 1859-1920
- Mulchrone, Kathleen, 1895-1973
- Mulconry family
- Muldoon, Michael, Fr., fl. 1840
- Muldoon, Paddy, 1891 - 1923
- Muldoon, Paul, 1951-
- Muldoon, Robert David, Sir, 1921-
- Muldowney, Michael
- Muldowney, Peggy, c.1929-2020
- Mulgrave, Henry Constantine, earl of, Lord Lieutenant
- Mulhall, Edward T., 1832-1899
- Mulhall, Edward Thomas, 1832-1899
- Mulhall, John, 1911-1981
- Mulhall, Michael George, 1836-1900
- Mulhall family
- Mulherin, William, 1887-1920
- Mulhern, Edward, bishop, 1863-1943
- Mulholland, Carolyn, b.1944
- Mulholland, John, d. 2001
- Mulholland, Roger, 1740-1818
- Mulholland, Rosa
- Mulholland, Rosa, Lady Gilbert, 1841-1921
- Mulholland, William, 1855-1935
- Mulholland family
- Mulholland family, barons Dunleath
- Mullally family
- Mullan, Cecil Brooke, 1944-
- Mullan, Francis (Frank), d.1910
- Mullan, John, 1864-1932
- Mullan, John F. "Sean", 1925-2015
- Mullan, Thomas Henry, fl.1900-1944
- Mullane, Julia, d.1895
- Mullaney, John, 1813-1884
- Mullanphy, John
- Mullanphy family
- Mullarney, Janet
- Mullarney, Máire, 1921-
- Mullen, Andrew, 1790-1818
- Mullen, Grace, 1905-1950
- Mullen, Johnny, d. 1935
- Mullen, Larry, Jr.
- Mullen, Madeleine ffrench-, 1880–1944
- Mullen, Matthew, stonemason, fl.1901-1923
- Mullen family
- Mullett, Hugh Aloysius, 1882-1942
- Mullett, James, 1854-1915
- Mulligan, Hercules
- Mulligan, Hercules, 1740-1825
- Mulligan, James A., Col., fl. 1864
- Mulligan, Mary (née Connor), c.1880-1964
- Mulligan, Mary, 1875/80-1964
- Mulligan, Thomas, d.1875
- Mulligan, Tommy, 1885-1972
- Mullin, Allen, 1653x4-1690
- Mullin, James, 1846-1920
- Mullin, Julia Elizabeth (née Forsythe), 1924-2016
- Mulliner, Ernest, W. b.1857
- Mullins, Frederick, d. 1712
- Mullins, Frederick William
- Mullins, Paddy, 1919-
- Mullins, Pat, Tpr., d.1961
- Mullins, Patrick, fl c.1830
- Mullins family
- Mullins family, Barons of Ventry
- Mullooly, Joseph, 1812-1880
- Mullooly, Joseph, O.P., 1812-1880
- Mulloy, John, 1921-2015
- Mulloy, Sheila, c.1923-2014
- Mulock, Thomas Samuel, 1789-1869
- Mulock family
- Mulquin, Katherine, 1842-1930
- Mulraney, William, 1880-1916
- Mulready, William, 1786-1863
- Mulrenin, Bernard, 1803-1868
- Mulroney family
- Mulso family
- Mulvaney, William Thomas, 1806-1885
- Mulvany, Charles, c.1750-c.1840
- Mulvany, George
- Mulvany, John, 1839-1906
- Mulvany, John George 1766-1838
- Mulvany, John Skipton, 1813-1870
- Mulvany, William Thomas, 1806-1885
- Mulvany, William Thomas, 1806–1885
- Mulvany, William Thomas, d. 1885
- Mulvey, Dominic St. John, 1908-1981
- Mulvey, Dominic St John, 1908-1981
- Mulvihill, Daniel, fl. 1783-1819
- Mulvihill, John Chrisostom, 1844-1916
- Mulvihill, Michael, d. 1916
- Mulvihill family
- Munchin, Saint
- Mungo (Kentigern), fl. 6th century
- Munna, Saint, 550?-634
- Munnelly, Tom, 1944-2007
- Munro, Henry, fl. 1758-1798
- Munro family
- Mura, Saint, c.550-c.645
- Murchad, son of Brian Bóruma, d.1014
- Murdoch, Iris, Dame, 1919-1999
- Murfi, Mikel
- Murimuth, Adam, 1274x5-1347
- Murland, James, fl. 1834
- Murnaghan, James, 1881-1973
- Murnaghan, Sheelagh Mary, 1924-1993
- Murnaghan, Sheelagh Mary, 1924–1993
- Murnane, Peadar, 1923-2014
- Murohy, John, Fr., d. 1798
- Murohy, William, 1834-1872
- Murphy, Aengus, 1961-1986
- Murphy, Art, fl. 1820
- Murphy, Arthur, 1727-1805
- Murphy, Arthur, 1727-1805 ; Brooke, Henry, 1703-83
- Murphy, Arthur, 1727–1805
- Murphy, Bernard, 1832-1897
- Murphy, Brendan, 1963-1997
- Murphy, Brian (Barry)
- Murphy, Brian, 1935-
- Murphy, Catherine (née Grogin), 1814-1889
- Murphy, Charles (Rodney), d.1922
- Murphy, Charles Francis, 1858-1924
- Murphy, Columbus,O.F.S.C., 1881-1952
- Murphy, Con, 1923-1995
- Murphy, Daniel, c.1842-1924
- Murphy, Daniel, fl. 1850
- Murphy, Daniel Anthony, d.1921
- Murphy, Delia, 1902-1971
- Murphy, Denis, 1910-1973
- Murphy, Denis, S.J., 1833-1896
- Murphy, Denny, d. 2001
- Murphy, Dominick F., 1918-2009
- Murphy, Donal, d. 1923
- Murphy, Dora, fl. 1902
- Murphy, Eamonn, d.2008
- Murphy, Edmund
- Murphy, Edmund, 1828-1865
- Murphy, Edmund, fl. 1679-81
- Murphy, Edward, 1823-1871
- Murphy, Edward, d. 1777
- Murphy, Edward, d. 1808
- Murphy, Edward, P.P., fl.1820-1826
- Murphy, Edward Aloysius, Captain, 1917-1990
- Murphy, Eliza, d.1827
- Murphy, Eliza, née O'Brien, fl. 1899/90
- Murphy, Emily Ferguson, 1868-1933
- Murphy, Fionnuala, b.1919
- Murphy, Frances Briga, 1912-2014
- Murphy, Francis, Mother, fl.1833-1872
- Murphy, Frank, 1916-1993
- Murphy, Franklin (1846-1920)
- Murphy, Gerard, 1901-1959.
- Murphy, Gerry
- Murphy, Henry, fl. 1846
- Murphy, Henry, Reverend
- Murphy, James, bishop, d. 1824
- Murphy, James, fl. 1795
- Murphy, James, fl. 1878-c.1904
- Murphy, James Cavanah (Cavanagh), c.1760–1814
- Murphy, James Jeremiah, 1825–1897
- Murphy, James Vincent, 1880-1946
- Murphy, Jeremiah, 1840-1915
- Murphy, Jeremiah, 1902-1990
- Murphy, Jeremiah James, 1795-1851
- Murphy, John (‘Jack’), 1919/20–c.1990
- Murphy, John, 1753-1798
- Murphy, John, 1875-1955
- Murphy, John, 1922-1944
- Murphy, John, 1928-2011
- Murphy, John, archdeacon, 1796-1883
- Murphy, John, b.1738
- Murphy, John, bishop of Cork, 1772-1847
- Murphy, John, Bishop of Cork, 1772-1847
- Murphy, John, c.1755-1832
- Murphy, John, fl. 1654-1656
- Murphy, John, Fr, 1710-1753
- Murphy, John, Fr., d. 1798
- Murphy, John A.
- Murphy, John A., 1927-
- Murphy, John A., 1927-2022
- Murphy, John James, 1796-1883
- Murphy, Joseph, 1928-
- Murphy, Kathleen M., d.1963
- Murphy, Kitty, 1922-2009
- Murphy, Laurence, 1920-1996
- Murphy, Laurence, b. c.1866-
- Murphy, Lawrence G., fl. 1870-1880
- Murphy, Maisie (Sister John Vianney). 1919-2011
- Murphy, Martin, 1785-
- Murphy, Martin, jr.
- Murphy, Mary Anne, c.1822-1911
- Murphy, Mary Ellen, 1898
- Murphy, Mary Louise, 1737-1814
- Murphy, Maurice Andy, 1880-1950
- Murphy, Michael
- Murphy, Michael (Ó Murchú, Mícheál), 1901-1972
- Murphy, Michael, fl. 1828
- Murphy, Michael, Sir, c.1839-1925
- Murphy, Michael J., 1913-1996
- Murphy, Mike, 1941-
- Murphy, Nicholas Daniel, M.P., 1811-1889
- Murphy, Paddy
- Murphy, Pat, 1927-2009
- Murphy, Patrick
- Murphy, Patrick (d. 1777)
- Murphy, Patrick, 1784-1847
- Murphy, Patrick, fl. 1673-1706
- Murphy, Patrick, KCSG, Sir, 1880-1954
- Murphy, Patrick, P.P., c.1887-1955
- Murphy, Philip, d.c.2021
- Murphy, Piers, fl. 1858-1862
- Murphy, Ptrick Noel, 1909-1991
- Murphy, Renee, d.2014
- Murphy, Richard, 1927-2018
- Murphy, Robert, 1806-1843
- Murphy, Rodney, d.1922
- Murphy, Seamus, 1907-1975
- Murphy, Seán
- Murphy, T. W., 1872-1953
- Murphy, Thomas, d.1890
- Murphy, Tim, 1803-1900
- Murphy, Timothy, 1755-1818
- Murphy, Timothy, 1800-1853
- Murphy, Timothy, bishop of Cloyne, 1789-1856
- Murphy, Tom (Thomas), 1935-2018
- Murphy, Tom, 1935-
- Murphy, Tom, 1935-2018
- Murphy, Tom Billy, 1875-1943
- Murphy, Tony, 1950-2004
- Murphy, William
- Murphy, William (1759-1833)
- Murphy, William, 1771-1849
- Murphy, William, 1834-1872
- Murphy, William, 1878-1966
- Murphy, William, fl. 1840-1891
- Murphy, William Joseph, c.1880-1916
- Murphy, William Martin
- Murphy, William Martin, 1845-1919
- Murphy, William Martin, 1845–1919
- Murphy, William Martin, 1845–1919,
- Murphy, William Richard English, 1890-1975
- Murphy, William Richard English, 1890-1975 ; Straines, Michael, 1885-1955
- Murphy family
- Murphy family, Cork
- Murray, Adam, d. 1706
- Murray, Alexander, 1794-1845
- Murray, Alexander, Sir, 1687-1743
- Murray, Annie, 1914-2002
- Murray, Ben, 1900?-1990?
- Murray, Charles Malachy, 1917-1944
- Murray, Daniel, 1768-1852
- Murray, Daniel, archbishop, 1768-1852
- Murray, Daniel, bishop, 1768-1852
- Murray, Darren, b. 1977
- Murray, David, 1931-2006
- Murray, Edward Leo, d.1922
- Murray, Eileen Frances Jane Banbury (née Chester), 1885-1962
- Murray, James, c.1875-1949
- Murray, James, d. 1928
- Murray, James, fl.1737
- Murray, Jimmy, 1917-
- Murray, John, 1807-1882
- Murray, John, d. 1882
- Murray, John, fl.1780-1810
- Murray, Joseph, fl.1846-1880
- Murray, Kevin, 1906-1999
- Murray, Kevin A., 1906-1999
- Murray, Laurence, 1883-1941
- Murray, Laurence Patrick ('Larry') (Ó Muireadhaigh, Lorcán) 1883-1941
- Murray, Leo, d.1922
- Murray, Marie-Caroline, 1741-1831
- Murray, Mary
- Murray, Nora J., 1888-1955
- Murray, Patrick, 1811-1882
- Murray, Patrick, 1865-1959
- Murray, Patrick, d.2014
- Murray, Patrick, fl. 1798
- Murray, Peter,
- Murray, Peter, 1872-1947
- Murray, Phelim, d. 2004
- Murray, R.J., 1876-1954
- Murray, Ruby, 1935-1996
- Murray, Seán
- Murray, Seán, 1896-1961
- Murray, Seán, 1898-1961
- Murray, Terence Aubrey, Sir, 1810-1873
- Murray, Thomas Cornelius, 1873-1959
- Murray, Thomas Joseph, 1893-1964
- Murray, Thomas Lindlay, c.1800-1891
- Murray Daniel, archbishop, 1768-1852
- Murray family
- Murrell, Margaret, c.1828-1864
- Murrell family see Morrell family
- Murtagh, Martin, fl. 1903-1919
- Murtagh, Patrick, 1896-1972
- Murtagh, Patrick, Governor G.H.M. Prison, Drogheda, d. 1879
- Murtagh, Thomas John, 1831-
- Musa, Jennifer (Wren, Bridget), 1917-2008
- Muschamp, Agmondesham, Lt Col., 1598-1658
- Muschamp, Denny
- Muschamp, Denny, c.1637–1699
- Musgrave, James, 1826-1904
- Musgrave, Richard, Sir, c.1755-1818
- Musgrave family
- Mussolini, Benito, 1883-1945
- Musuraca, Michael
- Myers, Christopher, 1717-1789
- Myers, Kevin, 1947-
- Myers, Rex C.
- Myers family
- Myhill family
- Myles, Brendan, fl. 1920s
- Myles, James Sproule, major, fl.1920-1944
- Myles, Sir Thomas, 1857-1937
- Myles na gCopaleen see O'Nolan, Brian, 1911-1966
- Myles na gCopaleen see O'Nolan, Brian, 1911-1966,
- Máedhóg, Saint, d. 625?
- Máedóc (Áed, Áedán, Mogue), founder and bishop of Ferns, d. 625/6
- Máedóc/Máedhóg aka Áed, Áedán, Mogue, founder and bishop of Ferns, d. 625/6
- Máedóc/Máedhóg of Ferns (Aidan or Áedan) - birth name Áed giving Mo Áed Óg, Anglicised Mogue c.558-632
- Máedóc of Ferns (Aidan or Áedan) anglicised Mogue - birth name Áed giving Mo Áed Óg, c.558-632
- Máel-Muire, son of Eochaid, comarba Pátraic, (963?–1020)
- Máel-Mura, d. 887
- Máel-Sechnaill (Máel-sechlainn II; Malachy Mór), 948–1022
- Máel Brigte
- Máel Brigte mac Tornáin, d. 927
- Máel Muire
- Máel Muire Othain, poet, d.887
- Máel Rúain, d. 792
- Máelsechlaind meic Máelrúanaid, king of Tara, d.862
- Máel Sechnaill mac Domnaill, 948-1022
- Mág Raghnaill family
- Mág Uidhir (Maguire), Cú Chonnacht Óg, 1520–1589
- Mág Uidhir (Maguire), Cú Chonnacht Óg, 1570–1608
- Mág Uidhir, Aodh, d.1600
- Mág Uidhir, Brian, fl.1660-1726
- Mág Uidhir, Féilim, d. 1487
- Mág Uidhir, Séamus, fl.1712-1746
- Mág Uidhir, Séamus, fl. 1718-1746
- NA
- Na Bolgoighe, Diarmuid, d. 1846
- Naessens, David
- Na gCeann, Cormac
- Naghten family
- Nagle, Denis, 1927-2007
- Nagle, Honora, 1718-1784
- Nagle, Jack, fl. 1921
- Nagle, John Dominic, c.1817-1889
- Nagle, Nano (Honora), 1718-1784
- Nagle, Nano (Honora), 1718–1784
- Nagle, Richard, Sir, fl. 1689-1691
- Nagle, William Joseph, c.1891-1933
- Nagle family
- Nairac, Robert, 1948-1977
- Nally, P.J., 1868-1911
- Nally, Patrick W.
- Nally, Patrick William, 1855-1891
- Namier, Lewis Bernstein, Sir, 1888-1960
- Nangle, Edward, 1799-1883
- Nangle, Edward, 1800-1883
- Nangle, Edward Walter, 1800–1883
- Nangle family
- Nankivell, John, 1941-
- Nannetti, Joseph Patrick ('J. P.'), 1851–1915
- Naper, James Lennox William, fl 1800
- Naper family
- Napier, Adela, c.1879-1952
- Napier, Charles James, Sir, 1782-1853
- Napier, Sir Joseph, 1804-1882
- Napier, Sir William Francis Patrick, 1785–1860
- Napier, William John, c.1870-1919
- Napoleon
- Napoleon Bonaparte, emperor, 1769-1821
- Napoleon I, Bonaparte, emperor, 1769-1821
- Napoleon I, Bonaparte, emperor, 1769-1821,
- Napoleon III, emperor, d. 1873
- Napoléon Bonaparte, 1769 – 1821
- Napoléon Bonaparte, 1769-1821
- Napoléon III, emperor of France
- Narbon, John
- Narbon, Nicholas
- Narjoux, Felix, 1836?-1891
- Nary, Cornelius, Fr., 1658-1738
- Nary, Cornelius, Revd, 1658-1738
- Nash, Cecil, 1902-1993
- Nash, John, 1752-1835
- Nash, Peter, d.1847
- Nathan, George Jean, fl. 1935
- Nathan, Matthew, Sir, 1862-1939
- Nathan, Sir Matthew, 1962-1939
- Nattes, John Claude, c.1765-1839
- Naudeau, Ludovic Charles, 1872-1949
- Naughton, Bill, (William John Francis), 1910-1992
- Naughton, George, d.1940
- Naughton, James, bishop, 1865-1950
- Naughton, James, d.1940
- Naughton, James, d. 1950
- Naughton, Patrick d. 1799
- Naughton, Tommy, d.2014
- Naughton family
- Navratil, Alfred, 1895-?
- Navratilova, Vojta, 1901-?
- Naylor, Thomas Bradley, 1846-1909
- Neachtain, Thaidg Ui, Jacobite
- Neal(e), John, c.1733-1791
- Neal(e) family
- Neal, John, fl.1710-1740
- Neal, William, d.1769
- Neale, Michael (Michael I, Prince of the Saltees), 1911-1998
- Neale family
- Nealon, Ted, 1929-2014
- Neary, Cornelius, 1660-1738
- Neary, Patrick, d.2005
- Neary, Patrick J.H.
- Needham, Richard, 1942-
- Needham, Richard; 1813-1864
- Neely, Jim, d.1977
- Neenan, Cornelius (Connie), 1892-1987
- Nehru, Jawaharlal, 1889-1964
- Nehru, Jawaharlal, 1889–1964
- Neilan, Jim, 1933-2016
- Neild, James, 1774-1814
- Neil family
- Neill, Patrick, d. 1705?
- Neill, Peter
- Neill family
- Neilson, Moses, Rev., 1739-1823
- Neilson, Moses, Revd, 1739-1823
- Neilson, Samuel, 1761-1803
- Neilson, William, 1774-1821
- Neilson, William, d.1821
- Neilson family
- Nelis, Robert, 1887-1915
- Nelligan, Patrick, fl. 1839
- Nelson, Charles
- Nelson, Havelock, 1917-
- Nelson, Horatio, 1758-1805
- Nelson, Horatio, viscount Nelson, 1758-1805
- Nelson, Isaac
- Nelson, Isaac, 1809-1888
- Nelson, Johnnie, b. 1902
- Nelson, Lady, Cathleen Bryan, 1899-1989
- Nelson, Louis (Lewis), 1884-1959
- Nelson, Samuel, 1864-1917
- Nemnich, Philipp Andreas
- Neny, Patrice-Francois de, 1716-1784
- Neny family
- Neri, Filippo (Philip), 1515-1595
- Nes
- Nesbitt, (William) James, b.1965
- Nesbitt, Ezekiel, d.1915
- Nestor family
- Netterville, John, 6th Viscount, 1744-1826
- Netterville, Richard, c.1545-1607
- Nettleton, John, 1940-2007
- Neufville, François de, 2nd Duke of Villeroy, 1644-1730
- Nevill, A. R. fl. 1803-1814
- Nevill, Francis, c.1648-1727
- Neville, John, 1842-1876
- Neville, Laurence, bishop of Ferns, fl. 1450-1503
- Neville, Parke, 1812–1886
- Neville, William
- Nevill family
- Nevin, Catherine
- Nevin, Catherine, fl. 1996
- Nevin, Kathleen (Catalina)
- Nevin, Martin, b.1939
- Nevin. Kathleen, c1898-1976
- Nevins family
- Nevinson, Henry Woodd, 1856-1941
- Newark, F. H.
- Newbigin, Agnes Jane Waugh, 1906-1980
- Newburgh family
- Newburn, Walter Joseph, 1873-1919
- Newcombe, Bertha, 1857-1947
- Newcomen family
- Newdigate, John, 1571-1610
- Newe, G. B., 1907-
- Newell, John, d. 1923
- Newell, Michael
- Newell family
- Newenham, Edward, Sir, 1734-1814
- Newenham, George Cobbe, fl.1832-1851
- Newenham, Robert O'Callaghan, 1770-1849
- Newenham, Thomas, 1762-1831
- Newenham family
- Newman, Cecil
- Newman, Edward, 1801-1876
- Newman, George1870?-1900
- Newman, Jeremiah, 1926–95
- Newman, John Henry, 1801-1890
- Newman, John Henry, cardinal, 1801-1890
- Newman, John Henry, Cardinal, 1801-1890
- Newman, Richard Francis, d.1899
- Newman family
- Newport, Veronica, Sister, b. 1920
- Newport, Walter Kevin, 1921-2004
- Newport, William, d.1820
- Newport family
- Newton, Dorothy,1910-1986
- Newton, Florence
- Newton, Florence, fl. 1661
- Newton, Florence, fl.1661
- Newton, Isaac, Sir, 1642-1727
- Newton family
- Neylon, Donnell
- Neylon, James
- Niall (O'Neill) family
- Niall Caille, son of Áed Oirdnide, king of Tara, d.846
- Niall Frosach, fl. 759-765
- Niall Glúndub mac Áedo, -919
- Niall Glúndub mac Áedo, d.919
- Niall Noígiallach (‘of the nine hostages’), 5th cent.?
- Niall Noígíallach (Niall of the Nine Hostages), c. 400
- Niall son of Iallàn, +860
- Niamh Chinn Óir
- Nic a' Ghoill, Róise
- Nicander
- Nic an Iomaire, Nóre, c.1924-post1938
- Nic Dhonncha, Lil, fl. 1959
- Nic Giolla Easpaig, Eibhlín, 1952-
- Nic Giolla Easpaig, Áine, 1949-
- Nic Grianna, Annie Bhán, 1893-1963
- Nicholas (Nixie) Boran (1904-1971)
- Nicholas, Saint, of Myra, d. 343
- Nicholas, William, d. 2002
- Nicholl, Andrew, 1804-1886
- Nicholls, Arthur Bell, 1818/19-1906
- Nicholls, Arthur Bell , 1819-1906
- Nicholls, Arthur Bell, 1819-1906
- Nicholls, George, Sir, 1781-1865
- Nicholls, Henry (Harry), 1889-1975
- Nicholls, Kenneth
- Nichols, Albert Russell, d. 1933
- Nichols family
- Nichols family (Dublin undertakers)
- Nicholson, Asenath (1792-1855)
- Nicholson, Asenath, 1792-1855
- Nicholson, Benjamin Walker, 1780-1858
- Nicholson, Henry, c.1681-?1721/33
- Nicholson, Henry, fl. 1723
- Nicholson, illiam Patteson, 1876 - 1959
- Nicholson, John, 1821-1857
- Nicholson, John, 1822-1857
- Nicholson,John T., c.1870-1936
- Nicholson, William, fl. 1947
- Nicholson, William Patteson, 1876-1959
- Nicholson family
- Nickerson, Jackie, 1960-
- Nickson family
- Nic Niocaill, Eibhlín, d. 1909
- Nic Néill, Máire, 1904-1987
- Nicol, Erskine, 1825-1904
- Nicolls family
- Nicolson, Alexander, 1827-
- Nicolson, William, bishop, 1655-1727
- Nic Pháidín, Caoilfhionn : Ó Cearnaigh, Seán
- Nic Shiubhlaigh, Máire, 1883-1958
- Nic Éinrí, Úna
- Ni Dhroma, Máire, fl. 1850. 1850
- Ni Dhulachanta, Máire, 1785-1829
- Nighean Mhic Raoghnuill na Ceapaich, Sileas, c.1660-
- Nightingale, Florence, 1820-1910
- Nihell, James, 1705-1759
- Nihell family
- Nihimia (Nehemiah)
- Nikal Seyn
- Niland, Nora, 1912-1988
- Ni Mháille, Máire
- Nimmo, Alexander, 1783-1832
- Nimmo, Alexander , 1783-1832
- Nimmo, Alexander, 1783–1832
- Ninian, Saint, d. 432?
- Nisket, Stuart
- Niven, Ninian, 1799–1879
- Nix, Swift, 1638-1688
- Nixon, Alexander, 1804-1882
- Nixon, Arthur Brown, fl. 1858
- Nixon, John
- Nixon, John, c. 1750-1818
- Nixon, John, Revd.
- Nixon, John William, 1877-1949
- Nixon, John William, M.P., 1880-1949
- Nixon, Richard Milhous, 1913-1994
- Noble, George, 1851-1948
- Noble, Margaret (Sister Nivedita), 1867-1911
- Noble, Margaret Elizabeth (Sister Nivedita) 1867-1911
- Noble, Margaret Elizabeth, 1867-1911
- Noble, Margaret Elizabeth /Sister Nivedita, 1867 - 1911
- Noble, Sir Percy Lockhart Harnam, 1880-1955
- Noble family
- Noctor, Michael, fl.1899-1923
- Noel family
- Nolan, Ann, d.2011
- Nolan, Anthony, P.P., fl. 1820-1848
- Nolan, Bill, 1907-1960
- Nolan, Finbarr, 1952-
- Nolan, Herman, CP, 1931-2009
- Nolan, Isabel,
- Nolan, J, fl. 1871
- Nolan, James, 1746-1858
- Nolan, James, fl.1881
- Nolan, Lewis Edward, 1818-1854
- Nolan, Mary, 1835-
- Nolan, Mary Columba, 1869-1910
- Nolan, Michael Victor, 1875-
- Nolan, Paddy, 1864-1913
- Nolan, Richard (Dick), fl.1951-
- Nolan, Sam, 1930-
- Nolan, Terence, d. 1798
- Nolan, Tommy, b.1938
- Nolan, Val
- Nolan, William, 1895-1928
- Nolan family
- Nolan Family
- Nolan family (of Logboy)
- Noll, William T.
- Noonan, Robert, 1870-1911
- Noonan, Robert Philippe (Robert Tressell), 1870–1911
- Noone, Garron, 1994-
- Noone, Hannah, 1778-1880
- Noone, Patricia,
- Nordau, Max Simon (born Simon Maximilian Südfeld, aka Simcha); 1849-1923
- Norden, John, 1548-1625?
- Norfolk, Henry FitzAlan-Howard, 15th duke of, d. 1917
- Norgrove, Emily, 1898-1977
- Norgrove, George1876-1937
- Norgrove, Maria, c.1878-1934
- Norman, Connolly, 1853-1908
- Norreys, Thomas, Sir, see Norris, Thomas, Sir, 1556-1599
- Norris, David, 1944-
- Norris, John, Sir, c.1547-97
- Norris, Michael
- Norris, Pat, 194?-
- Norris, Thomas, Sir, 1556-1599
- North, Frederick, 2nd earl of Guilford, 1732-1792
- North, Thomas, Sir, 1535-1603?
- Northey family
- North family
- Norton, Caroline, née Sheridan, 1808-
- Norton, Edward Felix, 1884-1954
- Norton, John, d. 1625
- Norton, Mary, 1903-1991
- Norton, William Joseph (‘Bill’), 1900-1963
- Norton, William Joseph, 1900-1963
- Norway, Arthur Hamilton CB, 1859-1938
- Norway, Louisa Hamilton
- Norway, Mary Louisa Hamilton, d.1932
- Norway, Nevil Shute, 1899-1960
- Nowlan, Kevin Barry, 1921-2013
- Nowlan, Patrick, fl. 1797-98
- Nowland (Nowlin, Nowlan, Nolan) family
- Noyer, George Victor du, d. 1869
- NoëL, Jean, d. 2009
- Nugent, Catherine, 1771-1816
- Nugent, Christopher, 14th Baron Delvin, 1544-1602
- Nugent, Christopher, 14th Baron Delvin, 1544–1602
- Nugent, Christopher, d. 1626
- Nugent, Christopher, Lord Delvin, d. 1752
- Nugent, Christopher, MD, 1697/8-1775
- Nugent, Emily Anne Bennet Elizabeth, fl. 1818-1834
- Nugent, Francis, 1569-1635
- Nugent, Francis Lavalin, 1569-1635
- Nugent, George Thomas John, 8th Earl and 1st Marquis of Westmeath, fl. 1818-1834
- Nugent, James, 1822-1905
- Nugent, Joe, d.1865
- Nugent, John Francis, 1846-1879
- Nugent, Leonora
- Nugent, Margaret
- Nugent, Margaret fl 1460
- Nugent, Monsignor James, 1822-1905
- Nugent, Oliver Stewart Wood, Sir, 1860-1926
- Nugent, Richard, 1st earl of Westmeath, 1583-1642
- Nugent, Richard, 3rd baron Delvin
- Nugent, Richard, baron of Delvin and 1st earl of Westmeath, 1585-1641
- Nugent, Richard, fl. 1604
- Nugent, Seán, musician, d. 1996
- Nugent, Sir Oliver Stewart Wood, 1860-1926
- Nugent, Thomas, 1569-1635
- Nugent, Thomas, 1700?-1772
- Nugent, Thomas, earl of Westmeath, 1669-1752
- Nugent, Walter, fl. 1746
- Nugent, William, 1550-1625
- Nugent, William, 1550–1625
- Nugent, William, fl. 1581
- Nugent family
- Nulty (McNulty), Thomas, 1818-1898
- Nulty, Thomas, bishop, 1818–1898
- Nulty, Thomas, bishop,1818–1898
- Nulty, Thomas, d. 1898
- Nulty, Thomas, Rev.
- Nunn, Louis, fl. 1870
- Nunn, Richard Joseph. 1831-1910
- Nuttall, Robert Kennedy, 1815-1881
- Nuttall family
- Nutting, John Gardiner, Sir, 1st Baronet, 1852-1918
- Nyerere, Julius, President of Tanzania, 1922-1999
- Nyham, Patrick (Pádraig Ó Niatháin), 1908-post 1965
- Nyhan, Cornelius, 1872-1952
- Nyhan, Mary (née Fehily), 1884-1955
- Nyhan family
- née Townley Balfour, Anna Maria
- Ní Bhradaigh, Éilis, 1927-2007
- Ní Bhrain, Renalda, c.1447-1510
- Ní Bhriain, Neilí, fl. 1911
- Ní Bhruadair, Gobnait, 1861-1955
- Ní Bhruadair, Gobnait, see Brodrick, Albinia Lucy, Hon., 1861-1955
- Ní Bhruadair, Gobnait see Brodrick, Albinia Lucy, Hon., 1861-1955
- Ní Bhruadair, Gobnait see Brodrick, Albinia Lucy, Hon., 1861-1955.
- Ní Chadhlaigh, Anna, fl. 1819
- Ní Chaoimh, Máire, 1890-1973
- Ní Chaoimh, Máire, c.1892-?
- Ní Chathasaigh, Bairbre, fl 1937
- Ní Chatháin, Próinséas, 1936-2018
- Ní Chatháin, Próinséas,1936-2018
- Ní Cheallaigh, Máire, 1928-2013
- Ní Chinnéide, Nóra, 1859-1936
- Ní Chonaill, Eibhlín Dhubh, c.1743–c.1800
- Ní Chonaill, Eileen Dubh, c.1743-c.1800
- Ní Chraoibhín, Eilís see Twigg, Eliza (Elizabeth, Lizzie) Anne, 1881-1933
- Ní Dhomhnaill, Máire, d.1662 ; Ó Cléirigh, Cú Choigcríche ; O'Donnell family
- Ní Dhomhnaill, Neilí, 1906-1984
- Ní Dhomhnaill, Nuala, 1952-
- Ní Dhonnabháin, Eibhlín, 1858-1936
- Ní Dhonnagáin, Máire, c.1720-c.1790
- Ní Dhonnchadha, Aoibheann
- Ní Dhonnchadha, Eibhlín
- Ní Dhroma, Máire (Molly na Páirce),, fl 1847
- Ní Dhroma, Máire (Molly na Páirce) c1800-c1850
- Ní Dhubhluachra, Pádraigín (Pat Deloughry), d.2016
- Ní Dhuibhne, Eilís, 1954-
- Ní Fhoghludha, Áine, 1880-1932
- Ní Ghadhra, Peigí Mhór
- Ní Ghallchóir, Síle Mhicí
- Ní Ghrifín, Cáit
- Ní Ghráda, Mairéad, 1896-1971
- Ní Ghráda, Máiréad, 1896-1971
- Ní Ghráda, Máiréad, 1899-1971
- Ní Gilwey, Ellen, d. 1647
- Ní Laoghaire, Máire Bhuí, 1774-1849
- Ní Laoghaire, Máire Bhuí, 1774–c.1848
- Ní Laoghaire, Máire Bhuí, 1784-1849
- Ní Laoghaire, Máire ‘Bhuí', 1774- c.1848
- Ní Laoire, Máire Bhuí, see Ní Laoghaire, Máire Bhuí, 1784-1849
- Ní Mhaonaigh, Sinéad, b. 1977
- Ní Mheara, Róisín
- Ní Mheara, Róisín, c.1920-2013
- Ní Mhianáin, Ciot Tom
- Ní Mhianáin, Sorcha
- Ní Mhionacháin, Mairéad, 1861-1957
- Ní Mháille, Bríd, fl.1879-fl1911
- Ní Néill, Íde, 1860-1959
- Ní Raghallaigh, Máire, 1867-1941
- Ní Rathallaigh, Áine see O'Rahilly, Anna, d.1958
- Ní Riain, Áine
- Ní Riain, Áine, 1910-2003
- Ní Riain, Áine, d. 2003
- Ní Shirideáin, Maighréad
- Ní Shithig, Máire, fl. 1937
- Ní Shéaghdha, Nessa, 1916-1993
- Ní Shúilleabháin, Eibhlín, 1900-1949
- Ní Shúilleabháin, Lís, 1923-2009
- Ní Shúilliobháin, Nóra, 1909-2001
- Ní Urmhumha, Máire, 1896-1983
- Ní Éimhigh, Mairéad, 1908-1980
- Núadu, fl. 850
- Núadu Necht
- O'Beirne, Brian
- O'Beirne, Denis, c.174?-1828
- O'Beirne, Eugene Francis, fl. 1860
- O'Beirne, Kevin
- O'Beirne, Patrick, fl.1896-1903
- O'Beirne, Seamas (Ó Beirn, Séamus; Byrne, James Fahy ), 1881–1935
- O'Beirne, Thomas Lewis, Bishop of Meath, 1748-1823
- O'Beirne, Thomas Lewis, bishop of Meath, c.1747-1823
- O'Boyle, Eamon, c.1891-197?
- O'Boyle, Neil 'Plunkett', 1898-1923
- O'Boyle, Niall, d. 1611
- O'Brenan family
- O'Brennan, Andrew, 1810-1878
- O'Brennan, Kathleen, fl. 1918-1919
- O'Brennan, Lily, 1878-1948
- O'Brennan, Seamus, c.1886-1968
- O'Brennan family
- O'Brian, Brian, fl. 1938-1950
- O'Brien (Ó Briain), Conchobar, d. 1268, king of Thomond
- O'Brien (Ó Briain), Donnchad Cairprech, king of Thomond, d. 1242
- O'Brien (Ó Briain), Toirrdelbach, d. 1306
- O'Brien (Ó Briain) family, earls of Thomond
- O'Brien, (O'Bryen) Timothy, d.1785
- O'Brien, Abigail, b. 1957
- O'Brien, Agatha, 1822-1854
- O'Brien, Aloysius, Aly, b.1915
- O'Brien, Anna Maria, 1785-1871
- O'Brien, Annie
- O'Brien, Arthur Patrick Donovan, 1872-1949
- O'Brien, Arthur Patrick Donovan 1872–1949
- O'Brien, Barnabas (Bryan, Barnaby), 6th earl of Thomond, c.1590-1657
- O'Brien, Beryl
- O'Brien, Bronterre, 1804-1864
- O'Brien, Catherine
- O'Brien, Catherine (née Keightley), 1676-1730/31
- O'Brien, Catherine, 1681-1730
- O'Brien, Catherine, fl. 1717-1726
- O'Brien, Catherine Amelia, 1881-1963
- O'Brien, Charles, 6th Viscount Clare, 1699-1761
- O'Brien, Charles, 1898-1993
- O'Brien, Charlotte Grace, 1845-1909
- O'Brien, Christopher, Major General, fl. 1663
- O'Brien, Conor (1880-1952)
- O'Brien, Conor (Connor), mac Toirdhealbaig Ó Briain, Conchobhar, king (or lord or prince) of Thomond, d.1539/1540
- O'Brien, Conor, 3rd earl of Thomond, 1535-1580
- O'Brien, Conor, 1880-1952
- O'Brien, Conor Cruise, 1917-2008
- O'Brien, Conor Cruise, 1917-2008 ; Paulin, Tom, 1949-
- O'Brien, Conor Cruise, 1917–2008
- O'Brien, Conor Francis, 1895-1969
- O'Brien, Conor Francis, d. 1969
- O'Brien, Cornelius, 1782-
- O'Brien, Cornelius, 1782-1857
- O'Brien, Daniel, 1891-1921
- O'Brien, Daniel, Earl of Lismore, 1683-1759
- O'Brien, Dean Morgan
- O'Brien, Denis, 1958-
- O'Brien, Dennis, fl. 1723-26
- O'Brien, Dermod, 1865-1945
- O'Brien, Domhnall Mór, ?1137-?1194
- O'Brien, Dominic, bishop, 1798-1873
- O'Brien, Dominick see O'Brien, Dominic, bishop, 1798-1873
- O'Brien, Donnchad Mac Briain
- O'Brien, Donough, 4th earl of Thomond, d. 1624
- O'Brien, Donough, 4th earl of Thomond, d. 1624,
- O'Brien, Donough, Sir, 1642?-1717
- O'Brien, Edna, 1930-
- O'Brien, Edna, b.1930
- O'Brien, Edward, Sir, 1705-1765
- O'Brien, Edward, Sir, fl. 1759
- O'Brien, Ellen Lucy (‘Nelly’) (Ní Bhriain, Neilí), 1864-1925
- O'Brien, Fitz-James, c.1829-1862
- O'Brien, Fitz James, 1828-1862
- O'Brien, Flann, 1911-1966
- O'Brien, Flann, see O'Nolan, Brian, 1911-1966
- O'Brien, Flann, see O'Nolan, Brian, 1911-1966
- O'Brien, Flann, see O'Nolan, Brian, 1911-1966,
- O'Brien, Francis, fl.1925-1962
- O'Brien, George, 1892-1973
- O'Brien, George, 1945-
- O'Brien, Gerald P.
- O'Brien, Gerard
- O'Brien, Henry, 5th earl of Thomond, 1589-1639
- O'Brien, Henry, 5th earl of Thomond, d. 1639
- O'Brien, Henry, 8th earl of Thomond, 1688-1741
- O'Brien, Henry Eoghan (Railway engineer), 1876-1967
- O'Brien, Henry Eoghan, 1875-1967
- O'Brien, Ignatius, 1857-1939
- O'Brien, Ignatius John, Baron Shandon, 1857-1930
- O'Brien, J.F.X. (James Francis Xavier), 1828-1905
- O'Brien, James ('Bronterre'), 1804-1864
- O'Brien, James (‘Bronterre’), 1804–64
- O'Brien, James (‘Bronterre ’), 1804–1864
- O'Brien, James, 1805-1864
- O'Brien, James, fl. 1910-1947
- O'Brien, James Francis Xavier, 1828-1905
- O'Brien, Jane Vere, b.1889
- O'Brien, Jeremiah
- O'Brien, John (1750-1832)
- O'Brien, John, Baron, 1776-1830
- O'Brien, John, bishop, d. 1769
- O'Brien, John, Bishop of Cloyne and Ross, 1701-1769
- O'Brien, John Aloysius, 1876-1956
- O'Brien, John B., 1938-1999
- O'Brien, John Thomand, 1786-1861
- O'Brien, John Thomond "Don Juan", 1786-1861
- O'Brien, Kate, 1897-1974
- O'Brien, Kendal E., 1849-1909
- O'Brien, Laurence (1842-1923)
- O'Brien, Lord Henry, Earl of Thomond, fl. 1666-1686
- O'Brien, Lucius, 13th Baron Inchiquin, 1800-1872
- O'Brien, Lucius, 1710-c.1771
- O'Brien, Lucius, Sir, 1731-1795
- O'Brien, Lucius, Sir, fl. 1759
- O'Brien, Mary Anne (Sr Ignatius), c.1860-1937
- O'Brien, Maurice, bishop, d. c.1586
- O'Brien, Michael, 1836-1867
- O'Brien, Michael, 1836–1867
- O'Brien, Michael, bishop, 1876-1952
- O'Brien, Michael, d. 1867
- O'Brien, Michael, d.2016
- O'Brien, Michael A., 1896-1962
- O'Brien, Michael J., 1870-1960
- O'Brien, Michael Vincent, 1917-
- O'Brien, Murrough, 1st earl of Inchiquin, 1614-1674
- O'Brien, Murrough, 6th Baron and 1st earl of Inchiquin, c.1616-1673
- O'Brien, Murrough, 6th Baron and 1st earl of Inchiquin, c.1616-1673
- O'Brien, Murrough, d. 1551
- O'Brien, Máire Ruadh, 1615?-1686
- O'Brien, Nora, 1906-
- O'Brien, Nora Connolly, 1893-1981
- O'Brien, Paddy
- O'Brien, Paddy, Comdt.
- O'Brien, Patrick, 1843-1917
- O'Brien, Patrick, 1853-1917
- O'Brien, Patrick, 1921?-1940
- O'Brien, Patrick Karl, 1932-
- O'Brien, Paul, d. 1820
- O'Brien, Paul c.1763-1820
- O'Brien, Peter, 1842-1914, Baron O'Brien of Kilfenora
- O'Brien, Raymond Moulton Seághan, d. 1977
- O'Brien, Richard, fl. 1849
- O'Brien, Richard Baptist, 1809-1885
- O'Brien, Robert, Admiral, 1776-1838
- O'Brien, Robert Donough, d.1917
- O'Brien, Sicele, 1887-1931
- O'Brien, Sophie, 1860-1960
- O'Brien, Sophie, c.1862-1962
- O'Brien, Terence Albert, O.P., bishop, 1600-1651
- O'Brien, Thomas, 1914-1974
- O'Brien, Thomas Patrick, 1896-1946
- O'Brien, Tim
- O'Brien, Timothy Carew, Sir, 1861-1948
- O'Brien, Turlough, Sir
- O'Brien, Veronica, 1905-
- O'Brien, Vincent, 1870-1948
- O'Brien, Vincent , 1870–1948
- O'Brien, Vincent, 1917-
- O'Brien, William
- O'Brien, William, 1852-1928
- O'Brien, William, 1852-1928,
- O'Brien, William, 1852–1928
- O'Brien, William, 1881-
- O'Brien, William, 1881-1968
- O'Brien, William, 1881–1968
- O'Brien, William, M.P., 1852-1928
- O'Brien, William, MP
- O'Brien, William Henry, fl. 1880-1918
- O'Brien, William Smith
- O'Brien, William Smith, 1803-1864
- O'Brien, William Smith, 1803–1864
- O'Brien-Kennedy, Francis, Dr.
- O'Brien Butler family
- O'Brien family
- O'Brien family (of Thomond)
- O'Brien family, baronets of Lemenagh & Dromoland, & barons Inchiquin
- O'Brien family, earls of Thomond
- O'Brien family, kings & earls of Thomond
- O'Byrne, Cathal
- O'Byrne, Eamon(n), fl.1947-1982
- O'Byrne, Feagh McHugh, c.1544-1597
- O'Byrne, James, 1912-2002
- O'Byrne, John, 1884-1954
- O' Byrne, Patrick James, Dean of Armagh,
- O'Byrne, Patrick James, fl. 1819
- O'Byrne, Phelim MacFeagh, fl. 1599
- O'Byrne family
- O'Byrne family (of Wicklow)
- O'Byrn family
- O'Cahan, Dónal Ballagh, d. 1616
- O'Cahan family
- O'Cahill, Daniel Duff, c.1580-c.1660
- O'Cahill, John M., 1840-1928
- O'Callaghan, Callaghan ('Callie'), 1923-
- O'Callaghan, Denis, 1931-
- O'Callaghan, Donal Óg 1891-1962
- O'Callaghan, Donogh
- O'Callaghan, Eimear
- O'Callaghan, Ellen, fl. 1840
- O'Callaghan, Eugene, fl. 1943-1969
- O'Callaghan, Eugene, fl. 1969
- O'Callaghan, Fachtna, fl. 2000
- O'Callaghan, Jeremiah (Jerry), d.1922
- O'Callaghan, Jeremiah, 1780-1861
- O'Callaghan, John Cornelius, 1805-1883
- O'Callaghan, John Cornelius, 1805–1883
- O'Callaghan, Margaret (Peg Flanagan) fl.1917-1952
- O'Callaghan, Michael, 1879-1921
- O'Callaghan, Michael, c.1894-1952
- O'Callaghan, Neil, 1904-
- O'Callaghan, Paddy, c.1917-c.2009
- O'Callaghan, Pat, 1906-1991
- O'Callaghan, Patrick (‘Pat’), 1905–1991
- O'Callaghan, Patrick, 1890-1918
- O'Callaghan family
- O'Callaghan family, Barons & Viscounts Lismore, 1741-1898
- O'Callaghan MacCarthy, Julian, d.1727
- O'Canann family
- O'Cannan, Bryan, 1692-1743
- O'Cannon family
- O'Carolan, Hugh, bishop, d. 1569
- O'Carolan, Turlough, 1670-1738
- O'Carragher family
- O'Carroll, E. V., d. 1941
- O'Carroll, Ely
- O'Carroll, Richard, 1876-1916
- O'Carroll family
- O'Carroll family (of Leap)
- O'Carroll family (of Offaly)
- O'Carroll family, of Offaly
- O'Casey, Breon, 1928-
- O'Casey, Breon, 1928-2011
- O'Casey, Sean, 1880-1964
- O'Casey, Sean, 1880-1964 ; Hansberry, Lorraine, 1930-1965
- O'Casey, Sean, 1880–1964
- O'Casey, Sean 1880-1964
- O'Casey, Seán, 1880-1964
- O'Casey family
- O'Cassidy family
- O'Ceirin, Eochaidh Eolach, fl. 12th century
- O'Cleary family
- O'Cleirig, Seagan, (Clarke, John), fl.1900-1914
- O'Clery, Delia (née Dickinson) fl.1883-1902
- O'Clery, Flan, c.1600-1665
- O'Clery, Sean, 1778-1846
- O'Clery family
- O'Coigley, James, 1761-
- O'Coigly, James, 1761-1798
- O'Connell, Billa, 1929-
- O'Connell, Brian, fl. 1968-
- O'Connell, Cardinal
- O'Connell, Charles, sculptor, fl.1833
- O'Connell, Daniel
- O'Connell, Daniel, 1775 - 1847
- O'Connell, Daniel, 1775-1847
- O'Connell, Daniel, 1775-1847 ; O'Connor, Feargus Edward, 1794-1855 ; Read, Donald
- O'Connell, Daniel, 1775-1847 ; Wellesley, Arthur, 1st Duke of Wellington, 1769-1852
- O'Connell, Daniel, 1775–1847
- O'Connell, Daniel 1775-1847
- O'Connell, Daniel Charles, Count, 1745–1833
- O'Connell, Daniel Joseph, S. J., 1896-1982
- O'Connell, Daniel Jr.
O'Connell, Mary, 1778-1836
- O'Connell, Denis
- O'Connell, Eilís, b. 1953
- O'Connell, Eilís, b.1953
- O'Connell, Jarlath, 1912-1958
- O'Connell, Jeremiah 'Ginger', 1887-1944
- O'Connell, Jeremiah Joseph (‘J. J.’, ‘Ginger’), 1887-1944
- O'Connell, Joan, 1933-2023
- O'Connell, John, 1930-
- O'Connell, John, Rev., d.1863
- O'Connell, Kathleen, 1888-1956
- O'Connell, Mary, d. 1836
- O'Connell, Mary, d.1836
- O'Connell, Maurice Charles Philip, Sir, d. 1848
- O'Connell, Maurice Jeffrey, 1765-1850
- O'Connell, Michael, 1887-1936
- O'Connell, Michael James, 1922-1977
- O'Connell, Morgan, Capt.
- O'Connell, Morgan David, 1809-1887
- O'Connell, Nora, d.1911
- O'Connell, Patricia, 1927-2006
- O'Connell, Patrick, 1850-1923
- O'Connell, Peter, 1755-1826
- O'Connell, Peter Reilly, 1860-1927
- O'Connell, Robert, Revd.
- O'Connell, Shaun
- O'Connell, T.J. (Thomas Joseph),1882-1969
- O'Connell, T.J., T.D., 1882-1969
- O'Connell, T.J. 1882-1969
- O'Connell, Tadhg, 1693-
- O'Connell, Thomas, d.1819
- O'Connell, Tom, 1932-
- O'Connell-Bianconi, Mary, 1896-1968
- O'Connell family
- O'Connor (Ó Conchobair), Fedlimid, d. 1265
- O'Connor (Ó Conchobair), Toirrdelbach, king of Connacht, d. 1345
- O'Connor (Ó Conchobhair), Ruaidhrí, king of Connacht, d. 1384
- O'Connor, Andrew
- O'Connor, Andrew, 1874-1941
- O'Connor, Andrew, sculptor, 1874-1941
- O'Connor, Arthur
- O'Connor, Arthur, 1763-1852
- O'Connor, Arthur, 1763-1852 : Tandy, James Napper, 1737?-1803
- O'Connor, Arthur James Kickham (‘Art’), 1888–1950
- O'Connor, Bartholomew (Batt), fl.1841-1886
- O'Connor, Batt, fl.1827-1835
- O'Connor, Bridget, 1850-1905
- O'Connor, Bridget Mary (Birdie), 1897-1968
- O'Connor, Charles, 1710-1791
- O'Connor, Charles Yelverton, 1843-1902
- O'Connor, Cob, fl. 1920s
- O'Connor, Cormac MacBrian (Cormac mac Briain Í Chonchubhair), fl.1550-1573
- O'Connor, Cynthia, fl. 1999
- O'Connor, Daniel, 1796-1858
- O'Connor, Daniel, 1830-1887
- O'Connor, Daniel, bishop, 1786-1867
- O'Connor, Denis Charles, 1807-1888
- O'Connor, Denis Finbar, 1871-1924
- O'Connor, de Pazzi, Sister, 1912-2009
- O'Connor, Dermot, d. c.1730
- O'Connor, Dominic, 1883–1935 : Bibby, Albert, 1877-1925 :
- O'Connor, Eddie, 1948-2013
- O'Connor, Eileen, 1892-1921
- O'Connor, Ethel (née O'Brien)
- O'Connor, Feargus Edward, 1794-1855
- O'Connor, Florence Jane, (dates unknown)
- O'Connor, Francis Burdett, d. 1871
- O'Connor, Frank, (O'Donovan, Michael Francis), 1903-1966
- O'Connor, Frank, 1903-1966
- O'Connor, Frank, 1922-2011
- O'Connor, Hugh, d. 1309
- O'Connor, J. J., fl. 1903-1944
- O'Connor, James, 1759-1819
- O'Connor, James, 1836–1910
- O'Connor, James, d. 1910
- O'Connor, James Arthur, 1792-1841
- O'Connor, James P., 1948-
- O'Connor, Jerome Murphy, 1935-2013
- O'Connor, Jimmy, 1928-1993
- O'Connor, John, 1850-1928
- O'Connor, John, d. 1913
- O'Connor, John, fl. 1870
- O'Connor, John Francis (Fr Dominic), 1883-1935
- O'Connor, John Joseph, 1920-1959-
- O'Connor, John Patrick Gallagher, 1801-1871
- O'Connor, Joseph (1841-1908)
- O'Connor, Joseph, 1963-
- O'Connor, Julia (née O'Farrell), d.1947
- O'Connor, Lawrence, d. 1795
- O'Connor, Luke, V.C., 1831-1915
- O'Connor, Michael, d.1871
- O'Connor, Nanette,fl. 1892-1913
- O'Connor, Padraig
- O'Connor, Padraig (Paddy), c.1901-1953
- O'Connor, Pat, 1921-1986
- O'Connor, Pat, d. 2002
- O'Connor, Patrick, d. 1916
- O'Connor, Patrick J,
- O'Connor, Patrick J., 1859-1908
- O'Connor, Patsy, c.1897-1915
- O'Connor, Paul James, 1796-1878
- O'Connor, Peter, 1872 - 1957
- O'Connor, Peter, 1872-1957
- O'Connor, Peter, 1872–1957
- O'Connor, Peter, 1900-1963
- O'Connor, Richard, Sir, 1889-1981
- O'Connor, Roderic, c.1784-1860
- O'Connor, Roderic, c.1786-1860
- O'Connor, Roderick (‘Rory’), 1883-1922
- O'Connor, Roger
- O'Connor, Seán
- O'Connor, Sinéad
- O'Connor, Sinéad, 1966-
- O'Connor, T. P. (Thomas Power), 1848-1929
- O'Connor, T. P. (Thomas Power), 1848-1929 : O'Briain, Art
- O'Connor, Thomas
- O'Connor, Thomas, d. 1852
- O'Connor, Thomas Power, 1848-1929
- O'Connor, Tim
- O'Connor, Timothy, c.1839-
- O'Connor, Timothy M., fl.1888-1932
- O'Connor, Tom, 1923-1988
- O'Connor, Ulick, fl. 1970-1981
- O'Connor, Yvonne
- O'Connor-Henchy family
- O'Connor Faly (Ó Conchobhair Failghe), Brian, d. 1560
- O'Connor family
- O'Connor family (of Swinford, Co. Mayo)
- O'Connor family, of Sylan, Co. Galway
- O'Connor Kerry family
- O'Connor Phaly, Bernardo, Count of Ofalia,
Knight of the Order of Santiago, 1696-1780.
- O'Conor (O'Connor) family
- O'Conor, Brendan, Revd.
- O'Conor, Cathal Crobhdhearg, (Crubh Dearg - Red Hand), King of Connaught, 1153?–1224
- O'Conor, Catherine, c.1710-1741
- O'Conor, Charles, 1710-1791
- O'Conor, Charles, 1710–1791
- O'Conor, Charles, fl. 1865-1885
- O'Conor, Charles, Rev., 1764-1828
- O'Conor, Charles, Revd, 1764-1828
- O'Conor, Charles Owen, 1838-1905
- O'Conor, Charles Owen, 1838-1906
- O'Conor, Daniel
- O'Conor, family
- O'Conor, Felim, fl. 1250-1400
- O'Conor, Hugo, 1732-1779
- O'Conor, John, pianist, 1947-
- O'Conor, Nicholas Roderick, 1843–1908
- O'Conor, Roderic Anthony, 1860-1940
- O'Conor, Rory, 1883-1922
- O'Conor, Thomas, fl. 1838-1840
- O'Conor Don
- O'Conor Don, Diarmaid, d. 1600
- O'Conor Donelan, Dermot, 1853-1929
- O'Conor family
- O'Conor Roe
- O'Conor Sligo
- O'Corcoran, John, bishop, d. 1389
- O'Cowltayn, Gilladuffe, fl.1559
- O'Crowley, Pedro Alonso
- O'Crowley family
- O'Cullen, family
- O'Curry, Eugene, 1794-1862
- O'Daly, Colin, fl. 1996
- O'Daly, Daniel (Dominic; Domingos do Rosario), 1595-1662
- O'Daly, Daniel, (Dominic; Domingos do Rosario) 1595-1662
- O'Daly, Daniel, 1595-1662
- O'Daly, Dermot, d. 1614
- O'Daly, Dominic, O. P., 1595-1662
- O'Daly, Dominic, OP, 1595-1662
- O'Daly, Hugh, 1867-1956
- O'Daly, John (Ó Dálaigh, Seán), 1800-1878
- O'Daly, John (Ó Dálaigh, Seán), 1800-1878 ; Cundún, Pádraig Phiarais, 1777-1857 ; o Barradh, Dáibhidh
- O'Daly, John, c.1800-1878
- O'Daly, Tadhg
- O'Daly family
- O'Davoran family
- O'Davoren family
- O'Dea, Cornelius, OFM, d. 1434
- O'Dea, Jimmy, 1899-1966
- O'Dea, Thomas, bishop, 1858-1923
- O'Dea family
- O'Dell family
- O'Dempsey, Barnaby, see McLysagh, Brian, c.1600-c.1653
- O'Dempsey, Michael, d. 1921
- O'Dempsey, Terence, 1st viscount Clanmalier, c.1571-1641
- O'Dempsey, Terence, 1st viscount Clanmalier, fl.1599-1637
- O'Dempsey family
- O'Dempsey family, viscounts Clanmalier
- O'Devany, Conor, bishop, c.1533-1612, see O'Devany, Cornelius, bishop, c.1533-1612
- O'Devany, Cornelius, archbishop, c.1533-1612
- O'Devany, Cornelius, bishop, 1533-1612
- O'Devany, Cornelius, bishop, c.1533-1612
- O'Develin family
- O'Devlin family
- O'Devoy/Deevy/Dee family
- O'Dochartaigh family
- O'Dogherty, Rosa
- O'Doherty, Cahir, Sir, 1587-1608
- O'Doherty, Cahir, Sir, 1587-1608; Chichester, Arthur, 1st Baron Chichester, 1563-1625),
- O'Doherty, Eamonn, 1939-2011
- O'Doherty, J. F.
- O'Doherty, John Keys, Bishop of Derry, 1833-1907
- O'Doherty, Joseph, fl.1916-1978
- O'Doherty, Kevin Izod, 1823-1905
- O'Doherty, Kevin Izod, 1823–1905
- O'Doherty, Malachi
- O'Doherty, Mary 'Eva', 1826-1910
- O'Doherty, Mary Eva (née Kelly), 1829-1910
- O'Doherty, Michael
- O'Doherty, Sir Cahir, lord of Inishowen, 1587-1608
- O'Doherty, Thomas, bishop, 1877-1936
- O'Doherty, Thomas Joseph, (1890-1964)
- O'Doherty, William, 1868-1905
- O'Doherty, William, M.P., 1868-1905
- O'Doherty family
- O'Donel, Neal, Sir
- O'Donell, Colonel Count, fl.1764
- O'Donnell, 'Red' Hugh (Ó Domhnaill, Aodh Ruadh), c.1572-1602
- O'Donnell, Annie, 1880-1959
- O'Donnell, Anthony, bishop, fl. 1681-1755
- O'Donnell, Aodh mac Aodh Duibh, d. 1618
- O'Donnell, Brendan
- O'Donnell, Brendan, 1974-1997
- O'Donnell, Brendan, fl. 2001
- O'Donnell, C. J., c.1849-1934
- O'Donnell, Cathbar (Caffar), d.1608
- O'Donnell, Cathbar Og, 1580-1609
- O'Donnell, Daniel, 1961-
- O'Donnell, family
- O'Donnell, Frank Hugh, 1846-1916
- O'Donnell, Frank Hugh, M.P., 1848-1916
- O'Donnell, Frank J. Hugh, 1894-1976
- O'Donnell, Godfrey, fl. 1258
- O'Donnell, Hugh
- O'Donnell, Hugh (of Larkfield)
- O'Donnell, Hugh, 'Red Hugh', 1571?-1602
- O'Donnell, Hugh, 1691-1754
- O'Donnell, Hugh, c.1814-1868
- O'Donnell, Hugh, c.1890-1975
- O'Donnell, Hugh, Revd.
- O'Donnell, Hugh Balldearg (Balderick, Balderock), d. c.1704
- O'Donnell, Hugh Balldearg, d. c.1704
- O'Donnell, Hugh Dubh
- O'Donnell, Hugh MacHugh Dubh, c.1537-1618
- O'Donnell, James, fl. 1817-22
- O'Donnell, James, fl.c.1896-1921
- O'Donnell, James Joseph, 1867-1935
- O'Donnell, James Louis, bishop, 1737-1811
- O'Donnell, John, 1868-1920
- O'Donnell, John, 1886-1920
- O'Donnell, John, M.P., 1866?-1920
- O'Donnell, John Francis, 1837-1874
- O'Donnell, Julia, 1919-
- O'Donnell, Laurence, bishop, d. 1855
- O'Donnell, Laurence, bishop, fl.1844-1855
- O'Donnell, Leonard, d.2018?
- O'Donnell, Leopold, fl. 1860
- O'Donnell, Liz
- O'Donnell, Manus, c.1490-1564
- O'Donnell, Manus, d.1563
- O'Donnell, Manus, d. 1563
- O'Donnell, Manus, d. 1563 ; Columba, Saint, c.521-597
- O'Donnell, Margaret, Catherine ('Margo'), 1951-
- O'Donnell, Margaret, Catherine ('Margo') 1951-
- O'Donnell, Mary
- O'Donnell, Maximilian Karl Lamoral, count, d. 1853
- O'Donnell, Michael, 1936-2018
- O'Donnell, Michael Francis, 1886-1958
- O'Donnell, Michel (Michael), 1730-1807
- O'Donnell, Niall Garbh, Sir, 1569-1626
- O'Donnell, Nicholas, 1862-1920
- O'Donnell, Nuala, b. c 1575, d. c 1630
- O'Donnell, Nuala, c.1575-c.1630
- O'Donnell, Patrick, cardinal, 1856-1927
- O'Donnell, Patrick, Cardinal, 1856-1927
- O'Donnell, Patrick, d. 1883
- O'Donnell, Peadar
- O'Donnell, Peadar, 1893-1986
- O'Donnell, Peadar, 1893–1986
- O'Donnell, Rory, 1st earl of Tyrconnel, 1574x5-1608
- O'Donnell, Rory, 1st earl of Tyrconnell, 1574x5-1608
- O'Donnell, Rory, 1st earl of Tyrconnell, 1574x5-1608,
- O'Donnell, Seán, 1938-2018
- O'Donnell, Siobhán, d. 1591
- O'Donnell, Siobhán, d.1591
- O'Donnell, Séamus, 1937-2004
- O'Donnell, Terence, Fr. 1908-1964
- O'Donnell, Thomas, d. 1918
- O'Donnell, Thomas Henry, c.1891-1917
- O'Donnell, William, 1779-1856
- O'Donnell, William, Fr., 1779-1856
- O'Donnell, William, Revd, 1779-1856
- O'Donnell, ‘Red’ Hugh (Ó Domhnaill, Aodh Ruadh), c.1572-1602
- O'Donnellan, Maurice, d. 1706
- O'Donnell family
- O'Donnell family (of County Donegal)
- O'Donnells
- O'Donnelly, Patrick, bishop, 1649-1719
- O'Donnoghue, family
- O'Donoghue, Brendan, 1942-2019
- O'Donoghue, Cornelius, 1906-1947
- O'Donoghue, Cornelius Bruno, 1905-1990
- O'Donoghue, Daniel, 1844-1907
- O'Donoghue, Denis, fl.1836
- O'Donoghue, Donal, 1897-1957
- O'Donoghue, Florence
- O'Donoghue, Florence, 1895-1967
- O'Donoghue, Hughie, b. 1953
- O' Donoghue, Hughie, b. 1953
- O'Donoghue, James, 1902-1920
- O'Donoghue, James, d.1920
- O'Donoghue, James, d. 2004
- O'Donoghue, John
- O'Donoghue, John, 1900-
- O'Donoghue, John, Private, 1899-1917
- O'Donoghue, Josephine, 1891-1966
- O'Donoghue, Mike
- O'Donoghue, Nannie Lambert Power, 1858-
- O'Donoghue, Patrick
- O'Donoghue, Philip
- O'Donoghue, Raymond, d. c.1996
- O'Donoghue, Stephen, d. 1867
- O'Donoghue, Tim John, c.1939-2012
- O'Donoghue, William B., fl. 1871
- O'Donoghue/Ross, Tighe, 1942-2023
- O'Donoghue family
- O'Donoghue family, of the Glens
- O'Donohoe, Patrick, 1815?-1854
- O'Donovan, Billy, 1919-2015
- O'Donovan, Cornelius, 1886-1965
- O'Donovan, Daniel (Donie), 1917-2016
- O'Donovan, Daniel, 1886-1983
- O'Donovan, Denis, d. 1911
- O'Donovan, Donal, 1928-
- O'Donovan, Edmond, 1844-1883
- O'Donovan, Emmett, 1933-2007
- O'Donovan, Gerald, 1871-1942
- O'Donovan, Ida, 1899-1990
- O'Donovan, James Laurence, (‘Jim’, ‘Seamus’), 1896-1979
- O'Donovan, James Laurence, (‘Jim’, ‘Seamus’), 1896–1979
- O'Donovan, Jeremiah, fl.1848-1864
- O'Donovan, Jim
- O'Donovan, John
- O'Donovan, John, 1806-1861
- O'Donovan, John, 1806-1861 ; Siegfried, Rudolf Thomas, 1830-1863 ; Stokes, Whitley, 1830-1909 ; Zeuss, Johann Kaspar, 1806-1856
- O'Donovan, John, 1806-1861; Connell son of Michael O'Breslen of Glengesh
- O'Donovan, John, 1858-1927
- O'Donovan, John, Fr, 1895-1959
- O'Donovan, John Emmet, 1898-1966
- O'Donovan, Michael
- O'Donovan, Michael, SVD
- O'Donovan, Nuala
- O'Donovan, Pat, fl.1935-1944
- O'Donovan, Patrick, 1880-1960
- O'Donovan, Patrick, fl. 1937-1968
- O'Donovan, Peadar
- O'Donovan, Richard, fl. 1823
- O'Donovan family
- O'Donovan Rossa, Jeremiah, 1831-1915
- O'Donovan Rossa, Mary Jane, 1846-1916
- O'Donovan Sean, d.2018
- O'Dooley family
- O'Doowd, Peadar, 1941-2024
- O'Dowd, Chris, 1920-1943
- O'Dowd, Gwen, b. 1957
- O'Dowd, John Joseph, 1949-2001
- O'Dowd, Mary
- O'Dowda, Brendan Joseph, 1925–2002
- O'Dowda, James, Baron, 1765-1798
- O'Dowda, James Vippler, Colonel Baron, 1765-1798
- O'Dowda family
- O'Dowd family
- O'Driscoll, Ciaran
- O'Driscoll, Denis, 1600-1650
- O'Driscoll, Donncadh Carrach, fl. 1628
- O'Driscoll, Finghín, Sir, fl1628
- O'Driscoll, John, 1798-1834
- O'Driscoll, John, 1924-
- O'Driscoll, Michael, fl. 1963
- O'Driscoll, Michael Joseph Leo, 1892-1941
- O'Driscoll, Nellie
- O'Driscoll, William Edward, d.1953
- O'Driscoll family
- O'Duffy, Eimar
- O'Duffy, Eimar, 1893-1935
- O'Duffy, Eoin
- O'Duffy, Eoin, 1890-1944
- O'Duffy, Eoin, 1890-1944; Butler, Robert, d. 1997; Jolly, Thomas
- O'Duffy, Eoin, 1892-1944
- O'Duignan, Francis, c. 1901-1991
- O'Dwyer, Edward Thomas, 1842-1917
- O'Dwyer, Edward Thomas, bishop, 1842-1917
- O'Dwyer, Edward Thomas, bishop, 1842-1917
- O'Dwyer, Edward Thomas, bishop 1842-1917
- O'Dwyer, John Gerard (‘Ged’), 1899–1996
- O'Dwyer, John Joseph, Count, fl.1700-1729
- O'Dwyer, Mary (née Breen), 1902-2003
- O'Dwyer, Michael
- O'Dwyer, Michael Francis, Sir, 1864–1940
- O'Dwyer, Nicholas, 1895-1956
- O'Dwyer, Robert, 1862-1949
- O'Dwyer, William, fl. 1930
- O'Dwyer family
- O'Fallon, James, archbishop, c.1709-1786
- O'Faolain, Sean, 1900-1991
- O'Faolain, Sean, 1900–1991
- O'Faoláin, Eileen, 1900–1988
- O'Faoláin, Julia, b. 1932
- O'Faoláin, Seán, 1900-1991
- O'Farrall family
- O'Farrell, -, Fr., fl. 1919
- O'Farrell, Elizabeth, 1884-1957
- O'Farrell, Fergus, 1918-2008
- O'Farrell, Francis Fergus, 1650-1708
- O'Farrell, James, b. 1752
- O'Farrell, Patrick James
- O'Farrell, Patrick James, 1933-2003
- O'Farrell, Richard, 1689-1757
- O'Farrell, Sean, 1896-1977
- O'Farrell family
- O'Farrell Mary, Sr Genevieve, 1923–2001
- O'Farrells
- O'Farrelly, Agnes, 1874-1951
- O'Farrelly, Agnes, d. 1951
- O'Farrelly, Agnes Winifred (Ní Fhaircheallaigh, Úna; Uan Uladh), 1874-1951
- O'Farrelly, Agnes Winifred (Ní Fhaircheallaigh, Úna; ‘Uan Uladh’), 1874-1951
- O'Farrelly, Agnes Winifred, 1874-1951
- O'Farrelly, Peter Edward, 1794-1873
- O'Ferrall, Ambrose, 1752-1835
- O'Ferrall, Richard
- O'Ferrall, Richard, d. 1663
- O'Ferrall, Richard More, d. 1935
- O'Ferrall family
- O'Ferrall family ; Goldsmith, Oliver, 1728-1774 ; Edgeworth, Maria, 1768 - 1849 ; Brittaine, George, 1788-1848 ; Lefroy family ; Corr, Elizabeth ; O'Connell, Daniel, 1775-1847
- O'Ferrill/O'Ferrall family
- O'Fihely, Maurice, Archbishop of Tuam, c.1460-1513
- O'Fihely, Maurice, Archbishop of Tuam, c.1460-1513
- O'Finn, Edmund, fl.1771-1798
- O'Finn, Francis, fl.1798
- O'Flahertie, Thomas Henry, fl. 1837-39
- O'Flaherty, Edmund
- O'Flaherty, Eva, 1874-1963
- O'Flaherty, Gerry, 1933-2019
- O'Flaherty, Hugh, 1898-1963
- O'Flaherty, Hugh, 1898–1963
- O'Flaherty, Hugh, Monsignor, 1898-1963
- O'Flaherty, Liam, 1896-1984
- O'Flaherty, Roderick, 1629-1718
- O'Flaherty, Tom
- O'Flaherty family
- O'Flanagan, Michael
- O'Flanagan, Michael, Fr., 1876-1942
- O'Flanagan, Michael, Revd, 1876-1942
- O'Flanagan, Theophilus, c.1762–1814
- O'Flanagan Family
- O'Flynn, James Christopher, 1881-1962
- O'Flynn, Jeremaih, d. 1831
- O'Flynn, Liam, 1945-2018
- O'Flynn, Patrick (d. 1818)
- O'Flynn, Richard, 1829-1905
- O'Flynn, Theophilus
- O'Fogarty family
- O'Friel, Clement
- O'Gallagher, Caecilia, fl. 1607.
- O'Gallagher family
- O'Gallagher family (of County Donegal)
- O'Gaora, Colm, 1887-1954
- O'Gara, A.P.A. (pseud.) see Mac Dermott, William Robert, 1839-1918
- O'Gara family : Ó Gadhra family
- O'Gill, Augustine, fl. 1702-1706
- O'Glacan, Niall, d.1653
- O'Gnímh family
- O'Gorman, Bridget (née Doyle), fl. 1920-1932
- O'Gorman, Camilla, 1825-1848
- O'Gorman, Camilla, 1828-1848
- O'Gorman, Canice, O.S.A., 1872-1941
- O'Gorman, David Lee, fl. 1860-1892
- O'Gorman, Elizabeth (née Kohlberg) b.1938
- O'Gorman, Kay, b. 1944
- O'Gorman, Richard, 1826-1895
- O'Gorman, Thomas, 1732-1809
- O'Gorman, Thomas, c.1760-
- O'Gormley family
- O'Grady, Christopher Patrick, 1904-1945
- O'Grady, Edward Stamer, 1838-1897
- O'Grady, Geraldine (Keogh)
- O'Grady, Hubert,
- O'Grady, Jane Stuart, 1823-1917
- O'Grady, Jimmy, fl. 1957
- O'Grady, Michael, d.1963
- O'Grady, Moya (O'Doherty)
- O'Grady, Patrick, 1626-1690
- O'Grady, Standish, Viscount Guillamore, 1776-1840
- O'Grady, Standish Hayes, 1832-1915
- O'Grady, Standish Hayes 1832-1915
- O'Grady, Standish James, 1846-1928
- O'Grady, Thomas, fl.1911-1912
- O'Grady, Thomas de Courcy "The O'Grady", 1844-1898
- O'Grady, William, c.1885-1971
- O'Grady family
- O'Grady Patrick, 1858-1943
- O'Growney, Eoghan
- O'Growney, Eugene (Ó Gramhnaigh, Eoghan), 1863-99
- O'Growney, Eugene (Ó Gramhnaigh, Eoghan), 1863-1899
- O'Growney, Eugene (Ó Gramhnaigh, Eoghan), 1863–1899
- O'Growney, Eugene, 1863-1899
- O'Growney, Eugene, Revd,1863-1899
- O'Hagan, Des
- O'Hagan, John, 1822-1890
- O'Hagan, Sheamus
- O'Hagan, Thomas, Lord, 1812-1885
- O'Halloran, Declan, fl.1980-2000
- O'Halloran, Joe, d. 2002
- O'Halloran, Joseph, S. J., c.1720-1800
- O'Halloran, Sylvester, 1728-1807
- O'Halloran, Tadhg, 1727-1798
- O'Halloran family
- O'Halloran family ; McNamara family
- O'Hanley family
- O'Hanlon, Fergal, b. c 1938, d. 1957
- O'Hanlon, John, 1821-1905
- O'Hanlon, John James (J.J.), 1876-1960
- O'Hanlon, Patrick (Fr OIiver), 1902-1957
- O'Hanlon, Redmond, fl. 1674-1681
- O'Hanlon, Richard J., Rear-Admiral, b.195?
- O'Hanlon family
- O'Hanlon family (of Orior)
- O'Hanly family
- O'Hanrahan, Michael (Ó hAnnracháin, Micheál), 1877–1916
- O'Hanrahan, Michael, 1877-1916
- O'Hanrahan, Michael, 1877–1916
- O'Hanrahan, Michael, d. 1916
- O'Hanrahan, Michael, d.c. 2021
- O'Hanrahan, Timothy W., 1855-1949
- O'Hara, Anthony, 1751-1811?
- O'Hara, Charles, 1705-1776
- O'Hara, Charles, 1740-1802
- O'Hara, Félix, 1732-1805
- O'Hara, Helen, 1845-1920
- O'Hara, James, 2nd Lord Tyrawley, 1682-1774
- O'Hara, Kane, d.1782
- O'Hara, Maureen, 1920-
- O'Hara, Patrick,
- O'Hara, Theodore, 1820-1867
- O'Hara family
- O'Hara family ; Crawley family
- O'Haran, Denis, Rev.
- O'Hara Riabhach
- O'Hare, Alice, fl.1988-2003
- O'Hare, Harry, fl.1988-2003
- O'Hare, James, b. 1929
- O'Hare, John, d. 1829
- O'Hart, Eugene, bishop, d. 1603
- O'Hart, John, 1824-1902
- O'Hea, Francois, fl. 1752-1755
- O'Hea family
- O'Healy, Patrick, d. 1579
- O'Hearn, Francis, 1752-1801
- O'Hedin, Gerardo
- O'Hegarty, P.S. (Patrick Sarsfield), 1879-1955
- O'Hegarty, Seán, 1881-1963
- O'Hegarty, Seán, 1881-1963 ; Gaunt, Admiral Sir Ernest, 1865-1940
- O'Hegarty family
- O'Hehir, Michael, 1920-1996
- O'Hely, Patrick, bishop, d. 1579
- O'Herlihy, Jonathan, d.2006
- O'Heyne, John, O.F.M., bishop, d. 1459
- O'Heyne, John, OFM, bishop, d. 1459
- O'Hickey, Michael (Ó Hiceadha, Micheál), 1861-1916
- O'Hickey, Michael (Ó hIceadha, Micheál), 1861-1916
- O'Hickey, Michael, d. 1916
- O'Hickey family
- O'Higgins, Ambrose (Ambrosio), 1720-1801
- O'Higgins, Ambrose, fl. 1720
- O'Higgins, Bernardo (1778-1842)
- O'Higgins, Bernardo, 1778-1842
- O'Higgins, Brian, 1882-1963
- O'Higgins, Brigid (née Cole; later Cox), c.1899-1961
- O'Higgins, Kevin Christopher, 1892-1927
- O'Higgins, Maev (Sister Mary Kevin), 1923-2022
- O'Higgins, Patrick, 1790-1854
- O'Higgins, Patrick, Irish Chartist, 1790-1854
- O'Higgins, William, bishop, 1794-1853
- O'Higgins family
- O'Higgins Riquelme, Bernardo, 1778-1842
- O'Horan, Eilish (née Dolan, later Brennan), 1907-1993
- O'Hore, John, fl. 1950s
- O'Huony, Daniel, fl. 1766
- O'Hurley, Dermot, d. 1584
- O'Hurley, Dermot, d.1584
- O'Kane, Dennis, Colonel, 1818-1863
- O'Kane, James, 1823-1913
- O'Kane, John, 1781-1865
- O'Kane, Louis, 1905-1973
- O'Kane family
- O'Kearney, Nicholas, c.1802-c.1865
- O'Keefe, David Dean, 1824-1901
- O'Keefe, J. A., Dr, fl. 1794-1796
- O'Keefe, James, 1829-1892
- O'Keefe, Jimmy, fl. 1973
- O'Keefe, Mark, fl. 1838
- O'Keefe, Maura, d. 2022
- O'Keefe, Peter, fl.1916-1917
- O'Keefe, Pádraig, 1887-1963
- O'Keefe, Trevor, fl. 1987
- O'Keefe family
- O'Keeffe, Adelaide, 1776-1865
- O'Keeffe, C. C., fl. 1853
- O'Keeffe, Cornelius, fl. 1960
- O'Keeffe, Denis, 1882-1952,
- O'Keeffe, Eugene, 1827-1913
- O'Keeffe, James George, 1865-1937
- O'Keeffe, Jim, d.2012
- O'Keeffe, John, 1747-1833
- O'Keeffe, John, fl. 1847-1879
- O'Keeffe, Maurice, 1949-2023
- O'Keeffe, Owen, 1656-1726
- O'Keeffe, Padraig, 1887-1963
- O'Keeffe, Patrick, fl. 1839
- O'Keeffe, Peter, d.2006
- O'Keeffe, Robert, fl. 1881
- O'Keeffe, Robert, Revd, 1814-1881
- O'Kelly (Ó Ceallaigh), Uilliam Buidhe, d. 1381
- O'Kelly, Aloysius, 1853-1941?
- O'Kelly, Aloysius, 1853-c.1941
- O'Kelly, Aloysius, fl. 1881-1884
- O'Kelly, Bernard, O.P., d.1653
- O'Kelly, Charles, 1621-1695
- O'Kelly, Claire
- O'Kelly, Claire, 1916-2004
- O'Kelly, Cornelius, 1907-1968
- O'Kelly, D.H.
- O'Kelly, Desmond Rea, 1923-2011
- O'Kelly, Dominic, 1897-1970
- O'Kelly, George Cornelius, 1886-1947
- O'Kelly, Hannah
- O'Kelly, J. J.
- O'Kelly, James, 1845-1916
- O'Kelly, James J., fl. 1881-1884
- O'Kelly, James Joseph, 1842-1916
- O'Kelly, James Joseph, 1842–1916
- O'Kelly, John, 1672-1753
- O'Kelly, John Joseph (‘Sceilg’; Ua Ceallaigh, Seán), 1872-1957
- O'Kelly, John Joseph, 1872-1957
- O'Kelly, John Joseph, 1872-1957 ; Corcoran, Timothy, 1872-1943 ; Keohane, Patrick T., d.1939
- O'Kelly, Joseph, 1828-1885
- O'Kelly, M. J.
- O'Kelly, M. J. (Michael J.), 1915-1982
- O'Kelly, Maria Anna, Countess of Marcolini
- O'Kelly, Mary, Countess, 1905-1999
- O'Kelly, Mary de Galway, Countess, 1905-1999
- O'Kelly, Mary Kate, 1878-1934
- O'Kelly, Michael J., 1915-1982
- O'Kelly, Paddy, fl. 1833-1874
- O'Kelly, Patrick, fl. 1798
- O'Kelly, Patrick, fl. 1798-1808
- O'Kelly, Patrick, fl. 1808
- O'Kelly, Patrick Bernard, 1852-1937
- O'Kelly, Patrick J., 1895-1947
- O'Kelly, Seamus
- O'Kelly, Sean T., 1882-1966
- O'Kelly, Seumas, 1875?-1918
- O'Kelly, Seán Thomas (Ó Ceallaigh, Seán Tomás), 1882–1966
- O'Kelly, Tadc, c.1270-1316
- O'Kelly, William, 1703-1767
- O'Kelly, William MacNeven, 1713-1787
- O'Kelly family
- O'Kelly family, lords of Hy Many
- O'Kelly family : Raftery, Anthony, 1779-1835 : Uí Mháíne
- O'Kennedy, Donogh, d. post-1657
- O'Kennedy, Donogh, fl.1635-1660
- O'Kennedy, William, Canon, 1881-1932
- O'Kennedy family
- O'Kerin family
- O'Kirby family
- O'Laverty, James, 1828-1906
- O'Leary (née Plunkett), Philomena (Mimi), c.1886-1927
- O'Leary, Art, d. 1773
- O'Leary, Arthur, c.1747-1773
- O'Leary, Arthur, composer, 1834-1919
- O'Leary, Arthur, Rev., 1729-1802
- O'Leary, Arthur, Rev., 1729-1802 ; O'Leary, Arthur, d. 1802
- O'Leary, Brendan
- O'Leary, Caoch, piper, fl. 1820-1835
- O'Leary, Charlie
- O'Leary, Cornelius, d. 1925
- O'Leary, Daniel, 1841-1933
- O'Leary, Daniel, 1846-1933
- O'Leary, Daniel Florencio, 1801-1854
- O'Leary, Denis A., 1846-1906
- O'Leary, Edward (Ned), c.1891-1969
- O'Leary, Edward, Rev., 1844-1924
- O'Leary, Ellen, 1831-1889
- O'Leary, Hannah,
- O'Leary, John, 1830-1907
- O'Leary, John, 1867-1961
- O'Leary, John, 1933-
- O'Leary, John, 1961-
- O'Leary, John K., d.2008
- O'Leary, Mary, fl.1865-67
- O'Leary, Michael, 1936-2006
- O'Leary, Michael, 1961-
- O'Leary, Michael, b. 1961
- O'Leary, Michael, V.C.
- O'Leary, Patrick, 1856-1931
- O'Leary, Peter, fl. 1900
- O'Leary, Peter ; Moore, Margaret ; Creaghe, John ; Devyr, Thomas Ainge
- O'Leary, Phillis, fl.1790
- O'Leary family
- O'Lee family
- O'Loan, Nuala
- O'Loghlen, Colman, Sir, d. 1877
- O'Loghlen, Torlogh, fl.1653-1663
- O'Loghlen, Turlogh, fl.1662-1690
- O'Loghlen family
- O'Looney, Brian, 1828-1901
- O'Lorkan family
- O'Loughlin, Daniel Ambrose, 1879-1941
- O'Loughlin, John, Count, 1869-1929
- O'Loughlin, Peadar,fl.1917-1919
- O'Loughlin, William Francis, pre-1870-1912
- O'Loughlin, William Francis Norman, 1849-1912
- O'Loughlin family
- O'Loughran, Patrick
- O'Loughran, Patrick, d. 1612
- O'Madden family
- O'Mahoney, Donnchadh (Donnchadh na hImirce Timchill), d.1213
- O'Mahoney family
- O'Mahony, Andy, b. 1934
- O'Mahony, Canice
- O'Mahony, Cecilia, 1740-
- O'Mahony, Christopher, 1933-2006
- O'Mahony, Connor, fl. 1650
- O'Mahony, Conor, 1594–1656
- O'Mahony, Dan, 1924-2009
- O'Mahony, Danno, 1912-1950
- O'Mahony, David Tynan, 1936-2005
- O'Mahony, Denis, 1925-2005
- O'Mahony, Eoin (‘Pope’), 1904–1970
- O'Mahony, Eoin, 1904-1970
- O'Mahony, Florence, fl. 1911
- O'Mahony, Frank, fl. 1940-1990
- O'Mahony, Henry
- O'Mahony, Henry F., 1842-1937
- O'Mahony, James
- O'Mahony, James, fl. 1862
- O'Mahony, Jeremiah, 1882-1953
- O'Mahony, John, 1815-1877
- O'Mahony, John, 1815–1877
- O'Mahony, John, 1844-1912
- O'Mahony, John Francis, 1815-1877
- O'Mahony, Liam, 1926-2009
- O'Mahony, Michael, d. 1997
- O'Mahony, Peter Tynan, fl. 1981
- O'Mahony, Pierce Charles de Lacy, MP, (‘The O'Mahony of Kerry’), 1850–1930
- O'Mahony, Seán, 1872-1934
- O'Mahony, Séamus Christopher (Chris), 1933-2006
- O'Mahony, Thaddeus, 1821-1903
- O'Mahony, Thomas, 1833-1897
- O'Mahony, Timothy J., fl. 1885-1888
- O'Mahony, Timothy Jerome, 1864-1914
- O'Mahony, Yves, Vicomte, 1917-2004
- O'Mahony family
- O'Mahony family
Mahoney family
- O'Mallay, Sarah (Sal) Joyce, 1896-1959
- O'Malley, Arthur, 1917-2002
- O'Malley, Charles M., c.1815-1887
- O'Malley, Desmond, 1939-
- O'Malley, Donogh, 1921-1968
- O'Malley, Edward Loughlin, 1842-1932
- O'Malley, Elizabeth, 1873-1972
- O'Malley, Emilius St Clair, 1847-1917
- O'Malley, Ernest Bernard, 1897-1957
- O'Malley, Ernest Bernard, 1897-1957 see O'Malley, Ernie (Ernest Bernard), 1897-1957
- O'Malley, Ernie (Ernest Bernard), 1897-1957
- O'Malley, George, 1786-c.1865
- O'Malley, George, Captain, 1785-c.1865
- O'Malley, George Hunter, 1844-1909
- O'Malley, Grace, 1530-1603
- O'Malley, Jane, b.1944
- O'Malley, Joseph, d.1923
- O'Malley, Kate Fleming, 1822-1901
- O'Malley, Mary Margaret (née Hickey), 1918-2006
- O'Malley, Mary Margaret, 1918-2006
- O'Malley, Michael George, 1886-1961
- O'Malley, Mick, 1906-1993
- O'Malley, Patrick (Keane), 1923-2015
- O'Malley, Peter, 1760-1823
- O'Malley, Sarah, fl. 1981
- O'Malley, Thaddeus, 1796-1877
- O'Malley, Tony, 1913-
- O'Malley, Tony, 1913-2003
- O'Malley, Una O'Higgins, 1927-2005
- O'Malley family
- O'Mallun, Dermot (Ó Maoldomhnaigh, O'Moloney), c1570-1639
- O'Maolconaire family
- O'Mara, James, 1873-1948
- O'Mara, Joseph, 1864-1927
- O'Mara, Matthew, c.1877-1917
- O'Mara, Patrick, SJ
- O'Mara, Róisín (James, Rosaleen), d.2013
- O'Mara, Stephen, fl. 1923
- O'Mara family
- O'Meagher family
- O'Meara, Barry Edmond, 1786-1836
- O'Meara, Barry Edward, 1786-1836
- O'Meara, Barry Edward, b. in or after 1770, d. 1836
- O'Meara, Dermot
- O'Meara, Edmund
- O'Meara, Frank, 1853-1888
- O' Meara, Frank, 1853-1888
- O'Meara, James (Jim), 1920-2011
- O'Meara, John, fl. 1990
- O'Meara, Martin, 1885-1935
- O'Meara, Patrick
- O'Meara, Patrick, Revd.
- O'Meara, Thomas, d. 1819
- O'Meara, William Aloysius, 1786-1848
- O'Meara family
- O'Meary, Frank, 1853-1888
- O'Mellan, Friar Tarlach, fl. c.1640-1655
- O'Mellan family
- O'Molloy (Ua Máel Muaid), Ailbe (Aulbin), d.1223
- O'Molloy, Francis see Ó Maolmhuaidh, Proinsias (Francis O'Molloy),d.1677
- O'Molloy family
- O'Molony, John, 1617-1702
- O'Monaghan family
- O'Monoley family
- O'Moore family
- O'Moran, James, general in the French army, 1739–1794
- O'Moran family
- O'More (Ó Mórdha), Rory (Ruaidhrí Caoch), c.1515–1547
- O'More (Ó Mórdha), Uaithne, c.1575-1600
- O'More, James, fl. 1774
- O'More, Owney MacRory, fl.1599-1600
- O'More, Patrick, fl. 1547-1548
- O'More, Rory Og, 1544-1578
- O'More family
- O'Muirgheasa, Niall, 1921-2011
- O'Mulderry (O'Muldarry) family
- O'Mullane, Catherine, fl. 1775
- O'Mullane family
- O'Mullan family
- O'Mulloy (Ua Máel Muaid), Ailbe, d.1223
- O'Mulryan family
- O'Murphy, Louisa, b. 1736, d. c 1815
- O'Neal, Alice, fl. 1738-1739
- O'Neil, Patrick, b.1921
- O'Neill (Ó Néill), Domhnall (d. 1325), king of Tyrone
- O'Neill, Arthur, 1734/6–1816
- O'Neill, Arthur, d. 1816
- O'Neill, Austin, d. 2002
- O'Neill, Bernard S., 1837-1864
- O'Neill, Bridget, fl.1921
- O'Neill, Cathal, 1930-
- O'Neill, Catherine
- O'Neill, Catherine, fl.20th c.
- O'Neill, Catherine, fl. 1574
- O'Neill, Charlie
- O'Neill, Conn
- O'Neill, Conn Bacach
- O'Neill, Connolly, fl. 1835
- O'Neill, Conn Ruadh, fl. 1615
- O'Neill, Dan, 1932-
- O'Neill, Dan, fl.2012
- O'Neill, Daniel, 1612?-1664
- O'Neill, Daniel, d. 1974
- O'Neill, Don Bernardo
- O'Neill, Eugene
- O'Neill, Eugene, 1888-1953
- O'Neill, Eugene, c.1680-1724
- O'Neill, family
- O'Neill, Francis (1848-1936)
- O'Neill, Francis, 1848-1936
- O'Neill, Francis, 1849-1936
- O'Neill, Francis, musician, 1848-1936
- O'Neill, Félix, fl. 1774-1778
- O'Neill, Geraldine, b. 1971
- O'Neill, Gordon, c.1652-1704?
- O'Neill, Henry
- O'Neill, Henry, 1586?-1617/21
- O'Neill, Henry, 1798-1880
- O'Neill, Hugh, 2nd earl of Tyrone, c.1550-1616
- O'Neill, Hugh, 1585-1609
- O'Neill, Hugh, 1610-1660
- O'Neill, Hugh, c.1781-1859
- O'Neill, Hugh, fl. 1839-1852
- O'Neill, Ignatius, 1896-1939
- O'Neill, Jack, c.1928-2012
- O'Neill, James, d. 1973
- O'Neill, James, fl. 1880-1890
- O'Neill, James Kearney, 1857-1922
- O'Neill, Jeremiah, 1846-1923
- O'Neill, Jessie (née Mc Ilhatton), fl.1914-1935
- O'Neill, John, 1834-1878
- O'Neill, John C., fl.1914
- O'Neill, John Charles, 1834-1878
- O'Neill, John G., fl.1934-1935
- O'Neill, John Joseph (Sean), 1904-1984
- O'Neill, Jorge Torades, 'The O'Neill', 1849-1925
- O'Neill, Joseph, 1964-
- O'Neill, Joseph James (Seosamh Ó Néill), 1878-1953
- O'Neill, Julia, 1889-1952
- O'Neill, Katie, 1897-
- O'Neill, Laurence, 1864-1943
- O'Neill, Laurence, 1864–1943
- O'Neill, Maire, 1887-1952
- O'Neill, Mary, 1879–1967
- O'Neill, Maurice, 1917-1942
- O'Neill, Maurice, d.2023
- O'Neill, Neill, d. 1690
- O'Neill, Niall
- O'Neill, Norah, 1916-2002
- O'Neill, Owen Roe, c.1583-1649
- O'Neill, Patrick, 1765-1832
- O'Neill, Patrick, d. 1828
- O'Neill, Patrick, d.1940
- O'Neill, Patrick, fl.1833-1880
- O'Neill, Patrick Francis, 1896-1947
- O'Neill, Peter, fl. 1798
- O'Neill, Phelim, Sir, 1605-1653
- O'Neill, Phelim, Sir, 1605-1653,
- O'Neill, Robert Eugene, fl. 1874
- O'Neill, Sarah Anne, d.2012
- O'Neill, Sean, 1883-post 1950
- O'Neill, Shane
- O'Neill, Shane (Seaán), c.1530-1567
- O'Neill, Shane (Seaán), c.1530–1567
- O'Neill, Shane, 1530?-1567
- O'Neill, Sir Phelim, c.1604-1653
- O'Neill, Sir Phelim, c.1605-1653
- O'Neill, Sir Phelim, c.1605-1653,
- O'Neill, T. L., d. 1595
- O'Neill, Tara
- O'Neill, Terence, 1914-1990
- O'Neill, Terence Marne, 1914-1990
- O'Neill, Terence Marne, Baron O'Neill of Maine, 1914-1990
- O'Neill, Thomas P., 1922-c.1996
- O'Neill, Thomas Philip (Tip), 1912-1994
- O'Neill, Turlough Luineach, 1530-1575
- O'Neill, Turlough Luineach, 1530-1595
- O'Neill, Turlough Luineach, Sir, c.1532-1595
- O'Neillan, Francis Patrick, baron Laimpruch au Epurz, 1670?-1734
- O'Neill Cuestas, Fernando, 1924-2005
- O'Neill family
- O'Neill family, earls of Tyrone
- O'Neill familyMcGrath, Séamus, 1923-2005
- O'Neill of Clandeboy family
- O'Neills
- O'Neylon, William, c.1634-1678
- O'Neylon family
- O'Nolan, Brian ('Flann O'Brien), 1911-1966
- O'Nolan, Brian (O'Brien, Flann), 1911-1966
- O'Nolan, Brian (‘Flann O'Brien’, 'Myles na gCopaleen', 'Myles na Gopaleen'), 1911-1966
- O'Nolan, Brian, 1911-1966
- O'Nolan, Gerard James (Ó Nualláin, Gearóid), 1874-1942
- O'Queely, Malachy, bishop, d. 1645
- O'Quinn, Murtagh, fl.1607
- O'Rahilly, Alfred, 1884-1969
- O'Rahilly, Anna, d.1958
- O'Rahilly, Michael Joseph (‘The O'Rahilly’), 1875-1916
- O'Rahilly, Michael Joseph, 1875-1916
- O'Rahilly, T. F., 1882-1953
- O'Rahilly, Thomas
- O'Rahilly family
- O'Regan, Anthony, bishop of Chicago, 1809-1866
- O'Regan, Bernard, 1896-
- O'Regan, Bernard, 1898-1996
- O'Regan, Brendan, 1917–2008
- O'Regan, Brian, fl. 1798-1850
- O'Regan, Denis Joseph, 1874-1941
- O'Regan, Flourie, 1917-2006
- O'Regan, James, 1866-
- O'Regan, John, d.1920
- O'Regan, Mary, 1922-1998
- O'Regan, Michael, fl. 1880-1930
- O'Regan family
- O'Reilly (Ó Raghallaigh), Cathal, d.1467
- O'Reilly, Alexander, 1723-1794
- O'Reilly, Annie, 1868-1942
- O'Reilly, Billy, 1916-
- O'Reilly, Bryan,Fr, 1638-1722
- O'Reilly, Charles, bishop of Kilmore, 1750-1800
- O'Reilly, Christopher, 1835-1910
- O'Reilly, Christopher J., fl. 1951-1955
- O'Reilly, Conor, d.1723
- O'Reilly,Conor, d.1723
- O'Reilly, Conor Mór (Uí Raghallaigh, Conchabhar Mór), d.1436
- O'Reilly, Edmund (Uí Raighaillaigh, Éamonn mac Maol Mórdha), fl.1620-1641
- O'Reilly, Edmund, bishop, 1598-1669
- O'Reilly, Edward, 1765-1830
- O'Reilly, Edward, 1856-1924
- O'Reilly, Egan
- O'Reilly, Eoghan, 1651-1723
- O'Reilly, Eugene, fl. 1921
- O'Reilly, Eugene, Fr, 1768-1852
- O'Reilly, Eóghan Ruadh, c.1460-1526
- O'Reilly, Frank, 1884-1957
- O'Reilly, Gerald, 1903-1990
- O'Reilly, Gerard, fl.1930-1985
- O'Reilly, Helen, 1922-1987
- O'Reilly, Hugh, d.1628
- O'Reilly, Hugh, Sir, fl. 1798
- O'Reilly, Ida (née Starkie), 1903-1987
- O'Reilly, James, 1887-1982
- O'Reilly, James William, 1884-1928
- O'Reilly, Jennifer
- O'Reilly, Jeremiah (1887-1970)
- O'Reilly, John, Captain, fl. 1846-1847
- O'Reilly, John, d.1634
- O'Reilly, John, d. 1717
- O'Reilly, John Boyle, 1844-1890
- O'Reilly, John Francis, 1916-1971
- O'Reilly, John Kevin, 1862-1929
- O'Reilly, Joseph, 1893-1943
- O'Reilly, Joseph Patrick, 1829-1905
- O'Reilly, Laurence, fl. 1789
- O'Reilly, Luke, 1898-1961
- O'Reilly, Maol Mórdha, see O'Reilly, Myles
- O'Reilly, Margaret, 1866-1905
- O'Reilly, Mary (née Moore) d.1764/67
- O'Reilly, Mary (née O'Reilly) fl. 1692
- O'Reilly, Michael, 1847-1862
- O'Reilly, Michael, 1847-1917
- O'Reilly, Michael W., 1889-1971
- O'Reilly, Michael William, 1889-1971
- O'Reilly, Michael William, fl.1910-1953
- O'Reilly, Molly, ?1902-?
- O'Reilly, Myles (Maol Mórdha), d.1635
- O'Reilly, Myles William Patrick, 1825-1880
- O'Reilly, Patrick, 1843-1914
- O'Reilly, Patrick, d.1825
- O'Reilly, Philip (Pilib Ó Raghallaigh), d. 1596
- O'Reilly, Philip MacHugh, 1599–c.1664
- O'Reilly, Potamian, 1846-1917
- O'Reilly, Reggie, d.2022
- O'Reilly, Ric, b. 1947
- O'Reilly, Richard, d. 1818
- O'Reilly, Richard, fl. 1798
- O'Reilly, Samuel, 1840-1917
- O'Reilly, Sean, 1969-
- O'Reilly, Thomas, 1830-1872
- O'Reilly, Thomas, 1871-1905
- O'Reilly, Thomas, fl. 1781-1795
- O'Reilly, Tony
- O'Reilly, Tony, 1936-
- O'Reilly, William Joseph "Bill", 1905-1992
- O'Reilly, William Joseph, 1864-1937
- O'Reilly/Reilly family
- O'Reilly family
- O'Reily, Jeremiah John Purcell, O. F. M.
- O'Reily, Jeremiah John Purcell, OFM
- O'Riain, Pádraig, fl. 1980-2004
- O'Riordan, Colm E., d.1988
- O'Riordan, Mattie, 1919-1990
- O'Riordan, Michael, 1857-1919
- O'Riordan, Michael, d. 1919
- O'Riordan, Micheál, 1917-2006
- O'Rorke, John, OFM, c.1716-1793
- O'Rorke, Patrick Henry, Colonel, 1836-1863
- O'Rorke, Patrick Henry, Colonel, fl. 1855-1862
- O'Rorke, Terence, Archdeacon
- O'Rorke., George Maurice, 1830-1916
- O'Rorke family
- O'Rourke (Ó Ruairc), Brian Ballach d.1562
- O'Rourke (Ó Ruairc), Brian na Múrtha (d. 1591)
- O'Rourke (Ó Ruairc), Eoghan, d. 1528, king of West Breifne
- O'Rourke (Ó Ruairc), Margaret (née O'Brien), d.1513
- O'Rourke, Bernard, 1874-
- O'Rourke, Bernard, 1874-1956
- O'Rourke, Bernard, fl. 1874-1901
- O'Rourke, Brian, 1566-1591
- O'Rourke, Brian Ballach, d. 1562
- O'Rourke, Brian na Múrtha, 1540-1591
- O'Rourke, Brian na Múrtha , 1540-1591
- O'Rourke, Brian Óg, 1568–1604
- O'Rourke, Conn (Conor), d. 1579
- O'Rourke, Conn, d. 1579
- O'Rourke, Dáire (1965-2010)
- O'Rourke, Frank, b.1899
- O'Rourke, James, 1879-1957
- O'Rourke, John, 1809-1887
- O'Rourke, John, c.1725-1786
- O'Rourke, John, d. 1786
- O'Rourke, Johnny (Uilleann piper), b.1819/29
- O'Rourke, Manus, c.1658-1743
- O'Rourke, Mary, 1937-
- O'Rourke, Mary, b. 1937
- O'Rourke, Paddy
- O'Rourke, William, d.1880
- O'Rourke family
- O'Rourkes
- O'Ryan, Edmond (Eamonn Ó Riain; Eamonn an Cnuic), ?1650/70-?1688/1724
- O'Ryan, Tomás
- O'Ryan family
- O'Scanlan, Timoteo
- O'Scanlan, Timoteo, 1726-1800?
- O'Scanlon, J. J. fl.1870
- O'Scannell, Patrick, bishop, d. 1270
- O'Searcaigh, Cathal, 1956-
- O'Shannon, Cathal, 1893-1969
- O'Shaughnessy, Charles, fl. 1826/7-1911
- O'Shaughnessy, Denis
- O'Shaughnessy, Eileen (Emily), 1876-1924
- O'Shaughnessy, James
- O'Shaughnessy, James, bishop, 1745x6-1829
- O'Shaughnessy, Laurence M., 1921-2017
- O'Shaughnessy, Terence, 1761-1848
- O'Shaughnessy, Thomas
- O'Shaughnessy, William, b. c 1673, d. 1744
- O'Shaughnessy, William Brooke, Sir, 1809-1889
- O'Shaughnessy family
- O'Shea, David, d. 1931
- O'Shea, Edward, 1853-1910
- O'Shea, family
- O'Shea, Guillermo, fl. 1850
- O'Shea, Henry David b.1860?
- O'Shea, James, c.1815-1881
- O'Shea, James, fl 1850-1860
- O'Shea, James, fl 1850s
- O'Shea, John, 1856-1947
- O'Shea, John, fl 1850-1860
- O'Shea, John, fl 1850s
- O'Shea, John Augustus, c.1839-1905
- O'Shea, Kieran, Fr, d.2006
- O'Shea, Luke, d.1817
- O'Shea, Marese, fl. 1997
- O'Shea, Mary, d. 2022
- O'Shea, William Henry, 1840-1905
- O'Shea Brothers
- O'Shea family
- O'Shee (Ó Seaghdha) family
- O'Shiel, Kevin, 1891-1921
- O'Shiel, Kevin Roantree
- O'Shiel, Kevin Roantree, 1891-1970
- O'Shiel, Owen, 1582-1650
- O'Shiel family
- O'Sullevane, Thomas
- O'Sullivan (Sullivan), Sir John William, c1700–post 1760
- O'Sullivan, Alice, 1836-1870
- O'Sullivan, Alice, 1836-1870,
- O'Sullivan, Andrew (Andy), 1882-1923
- O'Sullivan, Charles, Bishop, 1858-1927
- O'Sullivan, Cornelius, 1841-1907
- O'Sullivan, Daniel (Schoolteacher), fl.1858-1859
- O'Sullivan, Daniel, Goula, fl.1858-1859
- O'Sullivan, Denis, 1731-1801
- O'Sullivan, Donal
- O'Sullivan, Donal, 1760-1797?
- O'Sullivan, Donal, fl. 1602
- O'Sullivan, Eamonn, 1897-1966
- O'Sullivan, Eoin Roe
- O'Sullivan, family
- O'Sullivan, Gearóid, d. 1948
- O'Sullivan, Harold, 1924-2009
- O'Sullivan, Humphrey, 1853-1931
- O'Sullivan, John, 1895-1936
- O'Sullivan, John, Fr.
- O'Sullivan, John, Fr., 1808-1874
- O'Sullivan, John Justinian, Brother, 1865-1945
- O'Sullivan, John Marcus
- O'Sullivan, Johnny, fl. 1946-1948
- O'Sullivan, Joseph (Joe), d.1922
- O'Sullivan, Joseph, 1897-1922
- O'Sullivan, Julia, d.1939
- O'Sullivan, Lizzie, fl. 1916
- O'Sullivan, Mary Kenney, fl. 1888-1912
- O'Sullivan, Maureen, 1911-1998
- O'Sullivan, Maurice, d.2010
- O'Sullivan, Michael J.
- O'Sullivan, Mick (Mickey), 1935-2006
- O'Sullivan, Morty Oge, d. 1754
- O'Sullivan, Paddy, 1919-1948
- O'Sullivan, Paul, 1871-1958
- O'Sullivan, Paul Hanry, O.P., 1871-1958
- O'Sullivan, Richard, 1888-
- O'Sullivan, Seamus, 1879-1958
- O'Sullivan, Seumas 'see' Starkey, James Sullivan
- O'Sullivan, Sonia, 1969-
- O'Sullivan, Sonia, 1969- ; Delany, Ronnie 1935-
- O'Sullivan, Sonia, athlete, 1969-
- O'Sullivan, Thaddeus, fl. 1991-
- O'Sullivan, Thomas, F. b.1874
- O'Sullivan, Timothy (Tadhg) 1896-1929
- O'Sullivan, Timothy, 1896-1929
- O'Sullivan, Timothy, d.1923
- O'Sullivan, Timothy, fl. 1860-1870
- O'Sullivan, William, 1796-1819
- O'Sullivan, William, 1921-2000
- O'Sullivan, William Henry, 1829–1887
- O'Sullivan Beare, Donal Cam, 1560-1618
- O'Sullivan Beare, Donnell Cam, 1560-1618
- O'Sullivan Beare, Philip
- O'Sullivan Beare, Philip, 1590-1636
- O'Sullivan Beare, Philip, 1590?-1660?
- O'Sullivan Beare, Philip, 1590–1636
- O'Sullivan Beare family
- O'Sullivan Burke, Ricard, 1838-1922
- O'Sullivan CM, Michael, 1800-1855
- O'Sullivan family
- O'Tierney family
- O'Toole, Andrew, d.1799
- O'Toole, Edward, 1860-1943
- O'Toole, Fintan
- O'Toole, Joe
- O'Toole, John Paul, fl.1845-1849
- O'Toole, Kathleen M.
- O'Toole, Luke, 1873-1929
- O'Toole, Mary, 1874-1954
- O'Toole, Mary, f. 1901-1923
- O'Toole, Nicholas, 1842-1919
- O'Toole, Pádraig, 1938-
- O'Toole, Rose
- O'Toole, William
- O'Toole family
- O'Tunney family
- O'Tunney sculptors
- O, Connell, Daniel, 1775–1847 ; Edwards, Robert Dudley, Professor, 1909–1988
- O,Neill, Terence Marne, 1914-1990
- Oakes family
- Oates, Lawrence Edward Grace, 1880-1912
- Oates, Titus, 1649-1705
- Obama, Barack, president
- Obama, Barack Hussein II, 1961-
- Obbyns (Obins), Michael, fl.1619-1629
- Oben, James George, 1779-1819
- Oberley, Edith Toole
- Obins family
- O Braonain, Cathaoir, d. 1937
- O Byrne Phelim MacFeagh fl 1597-1599
- O Cahan family
- O Callaghan family
- O Conaill, Eoin, b. 1979
- O Conaill, Seán, fl. 1770-1832
- O Con Cheanainn, Ciarán, 1981-2009
- O Conchubair, Tairdelbach, 1088-1156
- O Conchubhair, Tomas, 1798-c.1870
- O Connally, Cahill Duff
- O Connell, Daniel, 1775-1847
- O Cróinín, Seán, 1915-1965
- Odell family
- Odlum family
- Odo, bishop, d. 958
- O Dogherty, Rose, c.1588-1660
- O Donnell, Bridget, fl 1935
- O Donnell, John -1925
- O Donoghue, Brendan, 1942-2009
- Odoric of Pordenone, OFM, 1286-1331
- Odrán, Saint, d.452
- O Duibhgeannáin, Cú Choigcríche, fl.1630-1641
- O Duibhgeannáin family
- Oduyling (O'Delany or O'Duigan), Donatus, fl. 1486
- O Ferrall, Roger, fl. 1675-1712
- Oftedal, Magne, 1921-1985
- Ogilby, John, 1600-1676
- Ogilby, John 1600–1676
- Ogilby, Lesley, d.1852
- Ogilby family
- Ogilvie, Albert George, 1890 - 1939
- Ogilvie, Eric James, 1892 - 1962
- Ogilvie, Madeleine, b.1969
- Ogilvie, William, 1740-1832
- Ogilvie family
- O Hara family
- O Hasson family
- O hEódhasa, Giolla Brighde (Bonaventure), c.1570-1614
- O Hickey family
- Oilill Molt, fl. 460-480?
- OIsín
- Oisín
- Oisín, supp. fl. 3rd-5th cent.
- OKillea, Family
- Olaf Godredsson, ?1080-?1153
- Olaf II Haraldsson, 995-1030
- Olaf II Haraldsson, king of Norway, c.995-1030
- Olafsson family
- Olcott, Chauncey, 1858-1932
- Olcott, Chauncy, 1860-1932
- Olcott, Sidney, 1873-1949
- Oldcastle, John, Baron Cobham, d. 1417
- Oldham, Edith, 1865-1950
- Oliver, Frederick Scott, 1864-1934
- Oliver, Henry, William, 1807-1888
- Oliver, John Andrew, 1913-2006
- Oliver, Sandra L.
- Olligan, Patrick, 1799-1853
- O Lochlainn, Colm, 1892-1982
- Olongsygh, (Oloingsych O'Lynch), Alan, fl1411-1451
- O Loughran family
- Oluwale, David, 1930-1969
- O Mahony family
- O Maolmhuaidh, Froinsias, 1606-1677
- O Meaghar family
- Omer, Thomas, d.1770?
- Omorra (O'Moore), Donatus, fl. 1486-1489
- Onahan, William J., 1836-
- Oneille, Félix, fl. 1774-1778
- O Neill Hugh 2nd earl of Tyrone, c.1550-1616
- Oneiropolos (pseud.) see Johnstone (Johnston), Charles, c.1719–c.1800
- Opik, Ernst Julius Opik, 1893-1985
- O Quinn, Sylvester, Fr.
- Orde, Hugh
- Orde, Thomas, fl. 1787
- O Regan, -, d. 1898
- Origen, of Alexandria, c.185-c.253
- Orme, Stanley (Stan), 1923-2005
- Ormesby family
- Ormond, dukes of
- Ormond, earldom of
- Ormonde, dukes of
- Ormsby, Lambert Hepenstal, 1849–1923
- Ormsby family
- Orosius, fl.375-417
- Orpen, Charles, 1791-1856
- Orpen, Goddard Henry, 1852-1932
- Orpen, Raymond D'Audemar, bishop of Limerick, Ardfert and Aghadoe
- Orpen, Sir William Newenham Montague, 1878-1931
- Orpen, William, 1878-1931
- Orpen, William Newenham Montague, Sir, 1878-1931
- Orr, Alexander Ector, 1831-1914
- Orr, Hugh Henry, 1904-1973
- Orr, Hugh Lamont, d.1913
- Orr, James, 1770-1816
- Orr, James,1770–1816
- Orr, John
- Orr, Robert
- Orr, William
- Orr, William, 1766–1797
- Orr, William, 1774-1860
- Orr, William 1766–97
- Orr family
- Orr family (of Antrim)
- Ortelius, Abraham, 1527 - 1598
- Orton, Arthur, 1834-1898
- O Ruairc family
- Osborne, Catherine, Lady, 1795?-1856
- Osborne, Goerge Alexander, 1806-1893
- Osborne, Henry, 1803-1859
- Osborne, John
- Osborne, Jonathan, 1794-1864
- Osborne, Patrick, fl. 1774
- Osborne, Richard, 1815-1899
- Osborne, S.G., 1808-1889
- Osborne, Sallie, 1878-1935
- Osborne, Sydney Godolphin, 1808-1889
- Osborne, Thomas, Sir, 1757?-1821
- Osborne, Walter, 1859-1903
- Osborne, Walter Frederick, 1859 - 1903
- Osborne family
- Osborough, W. N.
- Osbourne, Isobel (Belle), fl.1858-1900
- OShea, Thomas
- Oskamp, Hans (1936-1990)
- Oswald, Eleazar, 1750-1795
- Oswald, king and saint, 603x4-642
- Oswald, Lee Harvey, 1939-1963
- Oswiu [Oswy], king of Northumbria, 611/12–670
- O Tiománaidhe, Tadhg, c.1730-c.1770
- Otway, Caesar, 1780-1842
- Otway, Thomas, bishop of Ossory, 1616-1693
- Otway, Thomas, fl.1771-1782
- Otway, Thomas, fl.1771-1795
- Otway-Ruthven, Annette Jocelyn, 1909-
- Otway-Ruthven, Annette Jocelyn, 1909-1989
- Otway-Ruthven, Annette Jocelyn, 1909-1989,
- Ouin-la-Croix, Charles, fl.1870-1871
- Oulton, Richard, Revd, 1812-1880
- Ouseley, Gideon, 1762-1839
- Ouseley, Ralph, Sir, 1772-1842
- Outlaw, Roger, d. 1341
- Outlawe, Roger, Sir,
- Overend, George, 1895-1915
- Overend family
- Overton, Richard O.P., d. 1649
- Owen, Charlotte Maria, c.1840-1890
- Owen, family
- Owen, Jacob, 1778-1870
- Owen, Margaret Mary (Mary of the Nativity of Nazareth), 1839-1908
- Owen, Robert, 1771-1858
- Owen, Robert Dale, 1801-1877
- Owen, Robert Marcus, 1771-1858
- Owen, Roe, c.1582-1649
- Owen, Thomas, d. 1788
- Owen, Wilfred, 1883-1918
- Owen family
- Owens, Evelyn, 1931-2010
- Owens, Gerry, 1904-1983
- Owens, James, V.C., 1827-1901
- Owens, Richard, Bishop, 1840-1909
- Owens family
- Owenson, Sydney (Lady Morgan), c. 1783-1859
- Owenson, Sydney, Lady Morgan, c.1783-1859
- Oxburgh family
- O’Brien, Art
- O’Brien, Danny, d.1953
- O’Brien family (of Thomond)
- O’Callaghan, Colonel John, fl. 1890
- O’Carroll, Maurice , Archbishop of Cashel, -1316
- O’Connell, Daniel (1775-1847)
- O’Connell, Daniel, 1775-1847
- O’Connell, Maurice, 1936-2019
- O’Connell, Patrick, 1887-1959
- O’Conor, Charles, 1710-1791
- O’Conor, Charles, Revd, 1764-1828
- O’Davoren, Domhnall, fl.1563-1569
- O’Donnell, Patrick, 1835-1883
- O’Donnell, ‘Red’ Hugh (ó Domhnaill, Aodh Ruadh), c.1572-1602
- O’Donnell family
- O’Faoláin, Seán, 1900-1991
- O’Flaherty family
- O’Hagan, John J.
- O’Hanlon, Tommy, 1923-2010
- O’Higgins, Brian, 1882-1963
- O’Higgins, Thomas Francis, 1916–2003
- O’Kelly, William Buide, d.1381
- O’Kelly family
- O’Leary, ‘Cable’ (O’Leary, Denis; Ó Laoghaire, Donncha)
- O’Madden family
- O’Neill, Charles, Fr., 1887-1963
- O’Neill, Rose, Marchioness of Antrim, 1631-1695 ; Bayly, Katherine, d. 1774 ; Keightley, Frances, Lady, 1658-1725 ; Conway, Anne, Lady, 1631-1679
- O’Neill family
- O’Reilly, Alejandro, 1723-1794
- O’Riordan, Katherine
- O’Rourke, Brian na Múrtha, d.1591
- O’Rourke, Owen, 1660-1743
- O’Sullivan, Nora Mary
- O’Sullivan, Seumas (1879–1958)
- O’Sullivan Beare, Philip (Ó Súilleabháin Béirre, Pilib). c. 1590–1660
- O’Toole, David, d.1328
- Pack, Denis, Major-General Sir, 1775-1823
- Packy Jim
- Padarn, Saint, fl. 6th cent.
- Paeta, Félix Arturo Pedro, 1871-1964
- Page, Brian D.
- Page, Carole
- Paget, Arthur Henry Fitzroy, 1851–1928
- Paget, Henry, Marquis of Anglesey, 1764-1858
- Paget [formerly Bayly], Henry William, 1st marquess of Anglesey, 1768–1854
- Pain (Paine), George Richard, 1793?–1838
- Pain, George, 1793-1838
- Pain, James, 1779-1877
- Pain, James, 1779–1877
- Paine, Thomas, 1737-1809
- Paisley, Ian, jr.
- Paisley, Ian Richard Kyle, 1926-
- Paisley, Ian Richard Kyle, 1926-2014
- Paisley, Ian Richard Kyle, 1926-2014,
- Pakenham, Christine Patti (née Trew) (‘Christine Longford’), countess of Longford, 1900-1980
- Pakenham, Edward Arthur Henry, 6th earl of Longford, 1902-1961
- Pakenham, Edward Michael, 2nd Baron Longford, 1743-1792
- Pakenham, Edward Michael, 3rd Earl of Longford, 1817-1860
- Pakenham, Edward Michael, Sir, 1778-1815
- Pakenham, Francis Aungier (‘Frank’), 1st Baron Pakenham and 7th earl of Longford, 1905-2001
- Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001
- Pakenham, Henry, Dean of St Patricks, 1787-1863
- Pakenham, Kitty
- Pakenham, Ned
- Pakenham, Tom, 2nd earl of Longford
- Pakenham, Valerie, d.2023
- Pakenham-Walsh, William Sandford, 1868-1960
- Pakenham family
- Pakenham family, earls of Longford
- Paley, William
- Palladio, Andrea, 1508-1580
- Palladius, fl. 360-400
- Palladius, Saint, fl. 431
- Palladius, Saint, fl. 431 : Patrick, bishop and saint, 373-c.463
- Palladius, Saint, fl. 431 ; Patrick, Saint, 373-c.463
- Pallas, Peter Simon, 1741-1811
- Palles, Christopher, 1831-1920
- Palliser, John, 1817-1887
- Palliser, William, Archbishop of Cashel 1644–1726
- Palmer (née Ambrose), Eleanor, c.1720-1818
- Palmer, Roger, earl of Castlemaine, 1634-1705
- Palmer, Thomas W., 1822-1865
- Palmer, William Henry Roger, 1802–1869
- Palmer, William Waldegrave, 2nd earl of Selborne, 1859-1942
- Palmer family
- Palmerston family
- Palmer [née Villiers], Barbara, countess of Castlemaine and suo jure duchess of Cleveland, c.1640-1709
- Pankhurst, (Estelle) Sylvia, 1882–1960
- Pankhurst, Christabel Harriette, Dame, 1880-1958
- Pankhurst family
- Pantridge, (James) Frank (1916-2004)
- Paoli, Pasquale (Pascal), 1725-1807
- Paor, Risteard
- Paor, Seán, d. 1732
- Paor, Séamus, fl.1722
- Papworth, George, 1781-1855
- Pares, Richard, 1902-1958
- Parfrey, Bill, 1926-
- Paris, Matthew, c.1200-1259
- Park, Robert (1793-1876)
- Parke, Herbert William, 1903-1986
- Parke, Thomas Heazle, 1857-1893
- Parke, Thomas Heazle, 1857–1893
- Parker, Dehra, 1882-1963
- Parker, John Henry, 1806-1884
- Parker, Matthew, fl. 1851-1878
- Parker, Sarah (née Ganly), fl. 1851-1878
- Parker, Stewart, 1941-1988
- Parker family
- Parkes, Hilda Marion, 1916-1992
- Parkes, William Theodor
- Parkhurst, Charles Henry, fl. 1890
- Parkinson-Cumine family
- Parkinson family
- Parle, James, 1811-1870
- Parnell (O'Shea), Katharine (née Wood), 1846-1921
- Parnell, Anna and Fanny
- Parnell, Anna Mercer (Catherine Maria), 1852-1911
- Parnell, Catherine Maria, Anna, 1852-1911
- Parnell, Charles Stewart
- Parnell, Charles Stewart, 1846 – 1891
- Parnell, Charles Stewart, 1846-1891
- Parnell, Charles Stewart, 1846-1891 ; Casement, Roger David, Sir, 1864-1916
- Parnell, Charles Stewart, 1846-18917
- Parnell, Charles Stuart, 1846-1891
- Parnell, Delia Tudor, d. 1898
- Parnell, Delia Tudor Stewart, 1816-1898
- Parnell, Fanny Isabel, 1848-1882
- Parnell, Henry, fl. 1875
- Parnell, Henry Tudor, 1850-1915
- Parnell, John Henry 1811-1859
- Parnell, John Howard, 1843-1923
- Parnell, Katharine, 1845-1921
- Parnell, Thomas, 1679-1718
- Parnell, Charles Stewart, 1846-1891
- Parnell-Evans, Sophia, 1780-1853
- Parnell family
- Parr, Richard, 1617-1691
- Parrott,Joseph, 1781-1834
- Parry, Colin
- Parry, Glyndwr John Robert
- Parry, Griffith, fl. 1847
- Parslow, Frederick Daniel, 1856-1915
- Parsons (née Head), Henrietta, c.1807-1879
- Parsons (née Messel), Anne, Countess of Rosse, fl.1935-1992
- Parsons, Charles Algernon, Sir, 1854-1931
- Parsons, Dorothy, 1609-1671
- Parsons, Dorothy, 1640-1670
- Parsons, Laurence, 4th earl of Rosse, 1840-1908
- Parsons, Laurence, Sir, 2nd earl of Rosse, 1758-1841
- Parsons, Lawrence, Sir, fl. 1914-1915
- Parsons, Lawrence Michael Harvey, 6th Earl of Rosse, 1906-1979
- Parsons, Mary, countess of Rosse, 1813-1885
- Parsons, Robert, 1546-1610
- Parsons, William, 1st Baronet of Bellamont, 1570-1650
- Parsons, William, 3rd earl of Rosse, 1800-1867
- Parsons, William, Sir, c.1570-1650
- Parsons, William Edward, 1873-1918
- Parsons family
- Partridge, Eric Honeywood, 1894-1979
- Partridge, John, 1644-1715
- Partridge, William P., 1874-1917
- Partridge, William P., fl. 1916
- Partridge, William Patrick (Bill), 1874–1917
- Pasker, Seán
- Pasolini, Pier Paolo, 1922-1975
- Pastorini, quack
- Patchell, Mary, d.1895
- Patel, Vithalbhai Jhaverbhai, 1873-1933
- Patel, Vithalbhai Jhaverbhai, 1873–1933
- Paterson, Alexander Gordon, 1919-2010
- Paterson, Andrew Barton 'Banjo', 1864-1939
- Paterson, Betsy, fl. 1807
- Paterson, James, d.1846
- Paterson, Thomas George Farquhar, 1888-1971
- Paterson, Thomas George Farquhar, d. 1971
- Paterson, William, 1745-1806
- Patient, Thomas
- Paton, James Gilbert, Revd.
- Patrick (Gilla-Pátraic), d.1084
- Patrick (Pat) Fallon, 1885–1958
- Patrick (Patricius, Pátraic, Pádraig) (c.420–490?)
- Patrick, bishop and saint, 373-c.463
- Patrick, Bishop and Saint, 373-c.463
- Patrick, bishop and saint, 373-c.463 ; Muirchú
- Patrick, bishop and saint, 373-c.463 ; Tírechán ; Muirchú
- Patrick, bishop and saint, c.373 c.463
- Patrick, bishop and saint, c.373-c.463
- Patrick, bishop and saint, c.373-c.463,
- Patrick, c.420-490?, patron saint of Ireland
- Patrickschurch, John (of)
- Patten, Cecil Richard, R.C., d. 1902
- Patten, Christopher Francis, Baron Patten of Barnes, b.1944
- Patten, James, d. 1797
- Patterson, Annie Wilson, 1868-1934
- Patterson, Benjamin, 1837-1907
- Patterson, Benjamin Thomas, 1837-1907
- Patterson, Eily (née O'Grady), 1937-2015
- Patterson, Frank, 1938-2000
- Patterson, George, 1824-1897
- Patterson, Glenn, 1961-
- Patterson, Henry, 1947-
- Patterson, J. H., Colonel, 1867-1947
- Patterson, Johnny, 1840-1889
- Patterson, Johnny, 1840-1959
- Patterson, Johnny, d. 1889
- Patterson, Robert, 1792-1881
- Patterson, Robert, 1802-1872
- Patterson, Robert, 1802–1872
- Patterson, Robert, 1863-1931
- Patterson, Robert James, 1868-?1930
- Patterson, Robert Lloyd, 1836-1906
- Patterson, Saidie, 1906-
- Patterson, Samuel, 1831-1899
- Patterson, Seamus
- Patterson, Thomas MacDonald, 1839-1916
- Patterson, William, 1745-1806
- Patterson, Willie, 1883-1953
- Patterson family
- Pattison, Seamus, 1936-2018
- Pattison, Seamus, c.1937-2018
- Patton, Winifred, 1876-1914
- Patton family
- Paul, Phylis see Moore, Wilhelmina Phylis, Lady, 1878-1976
- Paul, Saint, the Apostle (Saul of Tarsus), 4 b.c.?-62/64 a.d.
- Paul, Thomas, Dean of Cashel, fl.1768-1759
- Pauli, Reinhold
- Paulin, Tom, 1949-
- Paul of Thebes, saint, d.c.341
- Paul V, Pope, 1550-1621
- Pausanias, 2nd century AD
- Pavel, Ruzicka, Major, 1887-1961
- Payne, George, 1848-1920
- Payne, John, fl. 1757
- Peacock, Joseph, c. 1783-1837
- Peacock, Joseph c.1783-1837
- Peacock, Nicholas, fl. 1740-1751
- Peadar, Ó hAnnracháin, 1873-1965
- Peake, Joseph Haddon, 1900-1991?
- Peake, Reuben Herbert, 189?-1917
- Peake, William John (Jack), 1892-1915
- Peall, Thomas
- Pearce, Edward Lovett, Sir, 1699-1733
- Pearce, Edward Lovett, Sir, 1699-1733 ; Gandon, James, 1743-1823
- Pearce, Edward Lovett, Sir, 1699?-1733
- Pearce, Edward Lovett, Sir, 1699?-1733,
- Pearce, Samuel, 1766-1799
- Peard, Frank W., 1920-
- Peare family
- Pearse, James H., 1839-1900
- Pearse, James H., 1839-1900 ; Pearse, Patrick Henry, 1879-1916
- Pearse, Margaret, 1878-1968
- Pearse, Margaret, d. 1932
- Pearse, Mary Brigid, 1888-1947
- Pearse, Patrick, 1879-1916
- Pearse, Patrick Henry, 1879-1916
- Pearse, Patrick Henry,1879-1916
- Pearse, Patrick Henry, 1879-1916
MacDonagh, Thomas, 1878-1916
- Pearse, Patrick Henry, 1879-1916 ; Ó Direáin, Máirtín, 1910-1988
- Pearse, Patrick Henry, 1879-1916.
- Pearse, Patrick Henry, 1879–1916
- Pearse, William, 1881-1916
- Pearse, William, 1881–1916
- Pearse, Patrick Henry, 1879 1916
- Pearse family
- Pearson, George, fl.1921-1922
- Pearson family
- Peart, Barbara
- Pecherin, Vladamir Sergeevich, 1807-1885
- Pecherin, Vladimir, 1807-1885
- Peck, John, Sir, 1913-
- Pedro V. King of Portugal. Reign,1853-1861.
- Peel, Robert, Sir, 1750-1830
- Peel, Robert, Sir, 1788-1850
- Peel, Robert, Sir, 1898-1934
- Peers, Edgar Allison, 1891-1952
- Pegum family
- Pelagius, theologian and heresiarch, p. 350-p. 418
- Pelham, Henry, 1749-1806
- Pelham, Thomas, 2nd earl of Chichester, 1756-1826
- Pelham-Holles, Thomas, 1st duke of Newcastle, 1693-1768
- Pelin, Benjamin, 1852-1934
- Pellew, Annie Norah, 1895-1991
- Pellew, Edward, 1st Viscount Exmouth, 1757–1833
- Pelly, Nigel, 1908-1966
- Pemberton family
- Pembridge, John, fl. 1347
- Pembridge, John de, prior
- Pender, Aidan
- Pender, Fiona
- Pender, Seamus, 1906-199?
- Penn, William, 1621-1670
- Penn, William, 1644-1718
- Penn, William, 1644-1718 ; Plimpton, John, fl. 1698
- Penn, William 1644-1718
- Pennecuik, Alexander, d. 1730
- Penny family
- Penprase, Newton, 1888-1978.
Ferguson, Michael, 1937-
Mac Cullagh, Richard.
- Penrose, Cooper, 1736-1815
- Penrose, H. H. Mrs (née Mary Elizabeth Lewis), 1860-1942
- Penrose family
- Peppard, Lambert, fl. 1729
- Peppard family
- Pepper, George Whitfield, 1833-1899
- Pepys, Charles Christopher, 1st earl of Cottenham, 1781-1851
- Pepys, Samuel, 1633-1703
- Perceval, John, 1st earl of Egmont, 1683-1748
- Perceval, John, 2nd earl of Egmont, 1711-1770
- Perceval, John, Sir, 3rd Baronet, 1660-1686
- Perceval, Robert, 1756-1839
- Perceval, Spencer, 1762-1812
- Perceval, William, d.1899
- Perceval-Maxwell, Michael, fl. 2000
- Percevale Maxwell family
- Perceval family
- Percival, Arthur Ernest, 1887-1966
- Percival, John, first baronet 1629-1665
- Percival family
- Percy, Algernon, 10th earl of Northumberland, 1602-1668
- Percy, Charles, Sir, 1572-1628
- Percy, Henry, 9th earl of Northumberland, 1564-1632
- Percy, Hugh, 1st duke of Northumberland, 1715-1786
- Percy, Hugh, 2nd duke of Northumberland, 1742-1817
- Percy, Thomas, bishop, 1729-1811
- Percy, Thomas, Bishop, 1729-1811
- Percy, William, 1771-1845
- Percy family
- Percy French, 1854-1920
- Peregrine, Sheila (née O'Grady)
- Perkins, John, c.1570-1665
- Perolz, Mary, 1874-1950
- Perrin, Louis, d. 1864
- Perrin family
- Perrot, James, Sir, 1571-1637
- Perrot, John, d. 1665
- Perrot, John, Sir
- Perrot, John, Sir, 1527-1592
- Perrot, John, Sir, 1528-1592
- Perrot, John, Sir, 1528–1592
- Perrot, John, Sir, d. 1637
- Perrott, W.R. (Bill), 1926-2004
- Perrott, W.R. (Bull), 1926-2004
- Perry (Perrie) family
- Perry, Alice, 1885-1969
- Perry, Alice, 1885-1969,
- Perry, Alice Jacqueline, 1885-1969
- Perry, Edward, d. 1655
- Perry, Henry, fl.1829-1848
- Perry, James, 1845-1906
- Perry, James, fl.1829-1858
- Perry, John, Rev.
- Perry, Lilla Minnie (née Bagwell), 1888-1974
- Perry, Oliver Hazard, 1785-1819
- Perry, William Prim, 1811-1879
- Perry family
- Perse, William, b. c 1728, d. c 1802
- Persico, Ignatius, cardinal, 1823-1896
- Persse, Henry Stratford, d. 1833
- Persse family
- Pery, Edmond Sexten 1719-1806
- Pery, Edmund Sexton, Viscount, 1719-1806
- Perón, Juan Domingo, 1895-1974
- Pestalozzi, Johann Heinrich, 1746-1827
- Petcherine, Vladimir, 1807-1885
- Peter(s), Hugh, 1598-1660
- Peter Martyr (of Verona), saint, d.1251
- Peter of Ireland (de Hibernia, de Ybernia), fl.1260
- Peters, Derek, 1932-
- Peters, Matthew William, 1741/2-1814
- Peto, Harold, 1854-1933
- Petrarch (Petrarca, Francesco), 1304-1374
- Petrie, George (1790-1866)
- Petrie, George, 1789-1866
- Petrie, George, 1789-1886
- Petrie, George, 1790-1866
- Petrie, George, 1790–1866
- Petrie, George, 1790–1866,
- Petroc, Saint, fl. 6th cent.
- Petronilla, of Meath
- Petters, Yanny
- Pettit, John James, fl. 1844-1912
- Pettit, Joseph, d. 1729
- Petty, John, 1st Earl of Shelburne, 1706-1761
- Petty, William, 2nd Earl of Shelburne, 1737-1805
- Petty, William, 2nd earl of Shelburne, 1737-1805
- Petty, William, Sir, 1623-1687
- Petty-Fitzmaurice, Henry Charles Keith, 5th marquess of Lansdowne, 1845-1927
- Petty-Fitzmaurice family
- Pevsner, Nikolaus Bernhard Leon, Sir, 1902-1983
- Peyton, Patrick, 1909-1992
- Peyton family
- Phaire (Phayre), Robert, 1619?–1682
- Phaor, Máire, d. 1723
- Phayer (Phayre), John, fl. 1825-1876
- Phayer (Phayre), Thomas Raleigh, c.1805-1851
- Phayer (Phayre), Thomas Raleigh, Junior, ?1840-1884
- Phayer, William, 1810-1879
- Phayer-Harris, Samuel, fl. 1890-1933
- Phayre, Robert see Phaire (Phayre), Robert, 1619?–1682
- Phelan, Brian
- Phelan, James, 1821-1892
- Phelan, James Duval, 1861-1930
- Phelan, Jim, 1895-1966
- Phelan, Margaret, d. 2000
- Phelan, Margaret M., 1902-2000
- Phelan, Maurice Charles
- Phelan, Patrick, see Whelan, Patrick, 1878-1916
- Phelan, Seán see Whelan, John, 1900-1921
- Phelan, Stewart Joseph, 1879-1916
- Phelan, Theodore Denis, 1908 - 1970
- Phelan, William, 1789-1830
- Phelan, William, Father, fl. 1786
- Phelan, William, Fr, fl. 1786
- Phelps family
- Phibbs, Bunty b. 1922
- Phibbs, Charles, Sir, 1878-1964
- Phibbs family
- Philbin, Eva, 1914-2005
- Philbin, Paddy, d. 1995
- Philip, Saint
- Philip de Braybrook, fl.1310
- Philip II, (Philip Augustus) king of France, 1165- 1223
- Philip II, king of Spain, 1527-1598
- Philip III, king of Spain, d. 1621
- Philip IV, king of Spain, 1621-1665
- Philips, Karl, fl. 1727-1740
- Philips, Katherine (neé Fowler), ('Orinda'), 1632-1664
- Philips, Katherine, (Orinda) 1632–64
- Philips, Katherine, 1632-1664
- Philips, Áine
- Philip V, also called (until 1700) Philippe, Duc (duke) d’Anjou, 1683-1746
- Phillips, Andrew, 1887?-1917
- Phillips, Henry Bettesworth, d. 1950
- Phillips, Jonathan, Sir
- Phillips, Joseph Aloysius, 1881-1918
- Phillips, Philip, archbishop of Tuam, c.1716–1787)
- Phillips, Thomas
- Phillips, Thomas, c.1560-1636
- Phillips, Thomas, Captain, fl. 1601-1611
- Phillips, Thomas, Sir, 1570?-1636
- Phillips, Thomas, Sir, c.1560-1636
- Phillips, W. E. A., 1936-2003
- Phillips, William H., 1830-1923
- Phillips, William Henry, fl.1855-1925
- Phillips family
- Phillpotts, Bertha Surtees, Dame, 1877-1932
- Philpott family
- Phipps, Constantine Henry, first marquess of Normanby, 1797-1863
- Phoenix, Ian, 1943-1994
- Piatt, Donn, 1905-1970
- Piatt, Donn Sigerson, 1905-1970
- Piatt, John James, 1835-1917
- Piatt, Sarah Morgan (neé Bryan), 1836-1919
- Pichot, Amédée, d. 1877
- Pickford, Mary
- Pickles, James, 1925-2010
- Pickow, George
- Pictet, Marc-Auguste, 1752-1825
- Pidgeon, William, fl 1840-1860
- Pierce, Michael, 1898-post 1955
- Pierce, Richard, 1801-1854
- Pierce, Richard, d. 1854
- Pierce family
- Pierrepoint, Albert, 1905–1992
- Pierrepoint, Thomas, ?1870-?1954
- Piers, Henry, 1567?-1623
- Piers, Henry, Sir
- Piers, John, fl.c.1770-c.1840
- Piers, John Bennett, Sir, fl. 1807
- Pierse, Johanna, née Roche, 1862-1927
- Pierse, Nicholas Dall
- Pierse, Thomas, 1855-1933
- Pierse, Thomas Edward (Toddy), 1898-1968
- Pierse family
- Piers family
- Pietri, Dorando, 1885-1942
- Pigot, David Richard, 1797–1873 (Is é 'Prior' an sloinne a tugtar san alt)
- Pigot, Edward Francis, S. J.
- Pigot, John Edward
- Pigot, John Edward, 1822-1871
- Pigott, Richard, 1828-1889
- Pigott, Richard, 1828-1889,
- Pigott, Richard, c.1828-1889
- Pigou, Arthur Cecil, 1877-1959
- Pike, Mary, fl. 1797
- Pilkington, Dorothy Eva, d.1976
- Pilkington, Frederic C., fl.1888-1920
- Pilkington, John,Constable, d.1892
- Pilkington, Laetitia, 1712-1750
- Pilkington, Matthew, 1701-1774
- Pilkington, Matthew, 1701-1784
- Pilkington, Matthew, fl. 1729-1733
- Pilling, Joseph, Sir
- Pilling. Joseph, Sir
- Pilon, Frederick, 1750-1788
- Pilot, Elizabeth 1742-1826
- Pilot, Joshua
- Pilsudski, Joseph, 1867-1935
- Pilsworth, William James, 1899-1974
- Pim, Greenwood, d.1906
- Pim, Herbert Moore
- Pim, Herbert Moore, 1883-1950
- Pim, Jonathan Ernest, 1858–1949
- Pim, Joshua, d. 1942
- Pim, Noel Grace Mary, 1909-
- Pim, Sheila,1909-1995
- Pim, Sheila, 1909-1995
- Pim, Thomas, 1771-1855
- Pinkerton, John, 1845-1908
- Pinkman, John A., d. 1970
- Pinochet, Augusto José Ramón, 1915-2006
- Pinsker, Leon (Pinsker, Lev Semyonovich), 1821-1891
- Pio of Pietrelcina, Saint, 1887-1968
- Piozzi, Hester Lynch, 1741-1821
- Piper, Raymond, 1923-2007
- Pippard, Benedict, fl. 1316
- Piranesí, Giovanni Battista, 1720-1778
- Pirmin, Saint, c.690-c.753
- Pirrie, Margaret Montgomery (née Carlisle) 1857-1935
- Pirrie, William James
- Pirrie, William James, 1847–1924
- Pirrie, William James, viscount, 1847-1924
- Pitman, Edwin James George, 1897-1993
- Pitt, William, 1st earl of Chatham, 1708-1778
- Pitt, William, 1759-1806
- Pitt-Rivers, Augustus Henry Lane Fox, 1827-1900
- Pius IX, Pope, 1792-1878
- Pius IX, pope, d. 1878
- Pius XI, pope
- Plaatje, Solomon Tshekisho, 1876-1932
- Place, Francis, 1647-1728
- Plant, George, 1904-1942
- Plant, William, fl.1822-1835
- Planxty, Music Group, fl. 1972-2006
- Platt, Henry Evelyn Arthur, 1884-1916
- Platt family
- Playfair, William Henry, 1789-1857
- Pleasants, Thomas, 1729-1818
- Plowman, Frederick Prussia, 1773-1820
- Plumb, John Harold, Sir, 1911-2001
- Plumptre, Anne, 1760-1818
- Plunket, Richard, fl.1772-1791
- Plunket, Thomas Span, 2nd baron Plunket, 1792-1866
- Plunket, William Conyngham, 1st baron, d. 1854
- Plunket family
- Plunkett, Anne, Lee, Lady 1839-1889
- Plunkett, Arthur James, 7th earl of Fingall, 1731-1793
- Plunkett, Arthur James, 8th earl of Fingall, 1759-1836
- Plunkett, Arthur James Francis, 11th earl of Fingal, 1859-1929
- Plunkett, Count George Noble, 1851-1948
- Plunkett, Edward John Moreton Drax, 18th baron Dunsany, 1878-1957
- Plunkett, Edward John Moreton Drax, Baron Dunsany, 1878-1957
- Plunkett, Elizabeth
- Plunkett, Elizabeth Mary Margaret, countess of Fingall, 1866-1944
- Plunkett, George Noble, Count, 1851-1948
- Plunkett, George Noble, Count, 1851–1948
- Plunkett, George Thomas, bishop, 1765-1827
- Plunkett, Grace Eveleen Gifford, 1888-1955
- Plunkett, Grace Gifford, 1888-1955
- Plunkett, Henry Barnewall, Captain, 1717-1765
- Plunkett, Horace Curzon, Sir, 1854-1932
- Plunkett, Horace Curzon, Sir, 1854-1932 ; Russell, George William (AE), 1867-1935 ; Yeats, W. B. (William Butler), 1865-1939
- Plunkett, Horace Curzon, Sir, 1854–1932
- Plunkett, James, 1920-
- Plunkett, James, 1920-2003
- Plunkett, James, 1920–2003
- Plunkett, James, d.1829
- Plunkett, John Hubert, 1802-1869
- Plunkett, Joseph Mary, 1887-1916
- Plunkett, Joseph Mary, 1887–1916
- Plunkett, Justin. 5th Earl of Fingall (d. 1734)
- Plunkett, Oliver, 1625-1681
- Plunkett, Oliver, 1625–81
- Plunkett, Oliver, bishop and saint, 1625-1681
- Plunkett, Oliver, bishop and saint, 1625-1681,
- Plunkett, Oliver Charles, 1845-1906
- Plunkett, Richard, fl. 1573-1584
- Plunkett, Robert, d. 1709
- Plunkett, Thomas Span, Bishop of Tuam, fl. 1839-1866
- Plunkett family
- Plunkett Family
- Plunkett family, earls of Fingall
- Pléimeann, Seán, 1814-1897
- Pockrich, Richard, 1696x7-1759
- Pocock, J. G. A.
- Pocock, John Greville Agard, 1924-
- Pococke, Richard, bishop, 1704-1765
- Pococke, Richard, bishop, 1704–1765
- Pococke, Richard, Bishop of Ossory, 1704-1765
- Poe, Edgar Allan, 1809-1849
- Poff, Sylvester, c.1846-1883; Barrett, James, d. 1883; Browne, Thomas, 1832-1882
- Pohanka, Brian
- Poincaré, Raymond, 1860-1934
- Pokorny, Julius, 1887-1970
- Pokorny, Julius, 1887–1970
- Pokorny, Julius, d. 1970
- Pole, Reginald, cardinal, 1500-1558
- Polk, Jamess Knox, 1795-1849
- Pollak, Andy
- Pollak, Stephen W., 1913-
- Pollard, Albert Frederick, 1869-1948
- Pollard, Alfred William, 1859-1944
- Pollard, Mary 'Paul', 1922-2005
- Pollard, Paul, 1922-2005
- Pollen, John, 1848-1923
- Pollen, John Hungerford, 1820-1902
- Pollen, Patrick, 1928-2010
- Pollexfen, John?, 1636–1715
- Pollexfen family
- Pollock (née Buckmaster), Margaret Anna, 1893-1929
- Pollock, Oliver, 1737-1823
- Pollock, Paul, 1896-1916
- Pollock, William James, "Billy", 1934-2017
- Pollok, Allan
- Pollok, Allan, d. 1881
- Pollok, Margaret
- Pollok family
- Polybius
- Pomeroy, Arthur, 1723-1798
- Pompallier, Jean-Baptiste, bishop, 1802-1871
- Ponsonby, Elizabeth, Lady, fl. 1739
- Ponsonby, Frederick, 3rd Earl of Bessborough, 1758-1844
- Ponsonby, Frederick George Brabazon, 6th earl of Bessborough, 1815–1895
- Ponsonby, John, 1713-1789
- Ponsonby, John William, 4th earl of Bessborough, 1781-1847
- Ponsonby, Sarah ('Sally'), 1755-1831
- Ponsonby, Sarah, 1745?-1831
- Ponsonby, Spencer Cecil Brabazon, Sir (later Ponsonby-Fane), 1824-1915
- Ponsonby, William, 2nd Earl of Bessborough, 1704-1793
- Ponsonby, William, 2nd earl of Bessborough, 1704-1793
- Ponsonby family, earls of Bessborough
- Pontfarcy, Yolande de
- Poole, Jacob, 1774-1827
- Poole, Joseph (Joe), d.1883
- Poole family
- Pooley, Thomas, 1646-1723
- Pooley, Thomas, M.P., 1646-1723
- Pope, Alexander, 1688-1744
- Pope, Alexander, 1688-1744 ; Swift, Jonathan, 1667-1745
- Pope family
- Pope Paul V, 1550-1621
- Pope Saint Gregory I, c. 540-604
- Popper, Deborah H.
- Portarlington, earls of
- Porte, Arthur E., 1853-1936
- Porter, Alexander, 1842-1918
- Porter, Alexander, Colonel
- Porter, Arthur Kingsley, 1883-1933
- Porter, Classon
- Porter, Elizabeth, 1902-1996
- Porter, Francis Knowles, 1845-1869
- Porter, Grey, Mrs
- Porter, Henry John
- Porter, James, 1752/3–1798
- Porter, James, 1753-1798
- Porter, Leslie, 1881-1917
- Porter, Roy Sydney, 1946-2002
- Porter family
- Porterfield, Sarah, 1722-1798
- Portlock, Joseph Ellison, 1794-1864
- Portlock, Joseph Ellison, Major-General, 1794-1864
- Posidonios, fl. 135-51BC
- Poskitt, Frances
- Posnett, Hutcheson Macauley, 1855-1927
- Postgate, Raymond William, 1896-1971
- Potain (Pontain), Docteur, 1760?-1820?
- Potter, Archibald James (‘Archie’), 1918–1980
- Potter, Gilbert, Inspector, d. 1921
- Potter, Margaret, fl. 1894-1909
- Potter, Thomas R.
- Potter family
- Potterton, family
- Potterton, Frederic, Revd., 1826-1912
- Potterton, Homan, 1946-
- Potterton, Homan, 1946-2020
- Potterton, Robert, 1823-1901
- Potterton family
- Pottinger, Eldred, 1811–1843
- Pottinger, Sir Henry, 1st baronet,1789–1856
- Pound, Ezra, 1885-1972
- Pound,Ezra, 1885-1972"
- Pound, Ezra Weston Loomis, 1885–1972
- Pounden, Alicia, 1772-1861
- Pounden, Alicia, fl. 1798
- Powderly, Terence Vincent, 1849-1924
- Powell, Caleb, fl. 1858
- Powell, James, c.1885-1915
- Powell, John
- Powell, John Blake, 1861-1923
- Powell, John Enoch, 1912-1998
- Powell, Jonathan
- Powell, Michael, 1905-1990
- Powell, Peter, d. 2007
- Powell, Samuel, d. 1772
- Powell, Thomas, fl. 1642
- Powell, William, fl.1637-1642
- Powell family
- Power, Aidan,d.2004
- Power, Albert G., 1881-1945
- Power, Albert George, 1881-1945
- Power, Anne (Annie), 1862-1891
- Power, Charlotte, fl. 1848-1873
- Power, Con, c.1899-2016
- Power, Daniel, c. 1790-1830
- Power,Daniel, c.1790-1830
- Power, Daniel, d.1870
- Power, Eamon
- Power, Eddie, 1901-1948
- Power, Eileanor, d. 1725
- Power, Eileen, 1889-1940
- Power, Eileen Edna le Poer, 1889-1940
- Power, Francis Hugh, fl. 1910
- Power, George, Sir, 1846-1928
- Power, Jackie, 1916-1994
- Power, James
- Power, Jim, 1949-2010
- Power, John
- Power, John, 1764-1831
- Power, John O'Connor, 1846-1919
- Power, Laurence, 1933-
- Power, Mary Anne, 1849-1900
- Power, Maura, 1887-1916
- Power, Maurice, 1836-1902
- Power, Michael, bishop, 1804-1847
- Power, Michael, fl.1932-1982
- Power, Nancy Wyse, d. 1963
- Power, Nicholas, fl. 1883-1938
- Power, Patrick, 1862-1951
- Power, Patrick, Canon, 1862-1951
- Power, Patrick, Canon, 1862–1951
- Power, Patrick, d. 1827
- Power, Patrick C., 1928-2008
- Power, Patrick P., 1915-1995
- Power, Peter, bishop, d.1587
- Power, Richard, 1905-1981
- Power, Richard, fl. 1819
- Power, Thomas Stanislaus, 1870-1952
- Power, Victor O'Donovan, 1860-1933
- Power, Violet O'Neill, 1884-1965
- Power, William
- Power, William, d. 1911
- Power brothers, James and William, fl 1797–1807
- Power family
- Powers, J.F., fl. 1951-1963
- Powers, Kenneth Harry, 1929-2005
- Powers, Mary Farl, d. 1992
- Powicke, Frederick Maurice, Sir, 1879-1963
- Powicke, Sir (Frederick) Maurice, 1879–1963
- Poynings, Edward, Sir, 1459-1521
- Poynton, Thomas, 1854-1922
- Poynton family
- Poyntz, Sarah, 1926-
- Praed, Rosa Caroline, 1851-1935
- Praeger, Robert Lloyd, 1865-1953
- Praeger, Robert Lloyd, 1865–1953
- Praeger, Rosamund, 1867-1954
- Praeger family
- Pratt, Charles, 1789-1865
- Pratt, Charles Vallancey, 1831-1907
- Pratt, Henry, fl. 1700-1800
- Pratt, John, 1721-1761
- Pratt, John Jeffreys (1759–1840), 2nd Earl Camden, lord lieutenant of Ireland
- Pratt, John Jeffreys, 2nd earl and 1st marquis of Camden, d. 1840
- Pratt family
- Praval, Charles, d. 1789
- Preisler, Mai, (née McGrillen), 1927-2013
- Prendergast (MacMaurice) family
- Prendergast, Ellen M., 191?-1999
- Prendergast, Ellen Margaret, 1918-1999
- Prendergast, Francis 'Frank', 1933-2015
- Prendergast, James, fl. 1847
- Prendergast, Jarleth, O.F.M., 1884-1911
- Prendergast, Jarleth, OFM, 1884-1911
- Prendergast, John Patrick, 1808-1894
- Prendergast, Kathy, 1958
- Prendergast, Myles, fl.1790-1842
- Prendergast, William, c.1888-
- Prendergast family
- Prendiville, Mary Patricia, 1868-1907
- Prene, John, archbishop of Armagh, c.1395-1443
- Prescott-Decie, Cyril, d.1953
- Pressinger family
- Preston, Christopher, Sir, 2nd Baron Gormanstown, fl. 1397-1418
- Preston, Elizabeth, duchess of Ormonde, 1615-1684
- Preston, Jenico, 5th Viscount Gormanston, 1585-1630
- Preston, Jenico, 5th Viscount Gormanston, 1585x6-1630
- Preston, Jenico, 15th Viscount Gormanston, 1879-1925
- Preston, Jenico, viscount Gormanston, 1501/02?-1569
- Preston, Richard, Lord Dingwall, 1st Earl of Desmond, c.1570-1628
- Preston, Thomas, 1st Viscount Tara, 1585-1655
- Preston, Thomas, 1st Viscount Tara, b. in or after 1585, d. 1655
- Preston, Thomas Alexander, 1927-2009
- Preston, William, 1742-1818
- Preston family
- Price, Charles1679?-1733
- Price, Dorothy Stopford, 1890-1954
- Price, Dorothy Stopford, d. 1954
- Price, Ivon, Major, 1866-1931
- Price, John Washington, fl. 1798-1800
- Price, Liam, 1891-1967
- Price, Paxton
- Price, Richard, 1723-1791
- Price, Stanley, 1931-
- Price, Stanley, 1931-2019
- Pride, Robert, d.1908
- Priessnitz, Vincent, 1799-1851
- Priestley, L.A.M. (Elizabeth). fl.1895-1933
- Priestly, Mary, d.2001
- Prieur, François-Xavier, 1814-1891
- Prim, Arthur, d.1847
- Prim, Dave, d.2018
- Prim, John George Augustus, 1821-1875
- Primo de Rivera, José Antonio, fl.1923-1930
- Primrose, Albert Edward Harry Mayer Archibald, 6th earl of Rosebery, 1882-1974
- Primrose, Archibald Philip, 5th earl of Rosebery, 1847-1929
- Prince, Mary, 1788?-1833
- Prince Alfred, Duke of Edinburgh and Saxe-Coburg Gotha, 1844-1900
- Pringle, James Moffet, 1883-1949
- Pringle, Peter, 1937-
- Pringle, Susanna, 1826-1910
- Prior, Jim, 1927-2016
- Prior, Joe
- Prior, Thomas, 1681-1751
- Prior, Thomas, 1682-1751
- Prior, Thomas 1757-
- Priscian, (Priscianus Caesariensis), fl. c. 500
- Prittie, Cornelia Elizabeth, d. 1888
- Private schools
- Pro, (José Ramón) Miguel Agustín, 1891-1927
- Proby, Jocelyn, 1900-1993
- Proby, Thomas, 1665-1720
- Proby, William, 5th earl of Carysfort, 1836-1909
- Procházka, Pauline, Baroness, 1842-1930
- Proclus, Archbishop of Constantinople(fl. 434-446
- Proclus, Archbishop of Constantinople, fl. 434-446
- Proctor, Gordon Hayter, c.1914-1944
- Proctor, M. J., 1897-1972
- Prodgers, Jeanette
- Prosper of Aquitaine, Saint, c.390-c.463
- Prost, Claude
- Prost, Joseph, 1804-1885
- Prost, Joseph, d. 1885
- Prost, Joseph, d. 1888
- Prout, Father, see Mahony, Francis Sylvester, 1804-1866
- Prow family
- Prunty, Bridget, fl.1832-1836
- Prunty family
- Prévost, -, Abbé, 1697-1763
- Prút, Liam, 1940-2023
- Pseudo-Jerome
- Ptolemy, Claudius, c.100-c.178
- Publius Vergilius Maro (Virgil), 70 BC-19BC
- Publius Vergilius Maro (Virgil), 70-19 B.C.
- Puckering, John, 1544-1596)
- Pugh, Richard
- Pugh, Thomas,
- Pugin, Augustus Welby Northmore, 1812-1852
- Pugin, Edward Welby, 1834-1875
- Pugin family
- Pulleine, James
- Punch (Ponce), John, 1603-c.1660x1673,
- Punch, John, 1599-1672
- Punch, John, 1880-1967
- Punch family
- Purcell, A. A.
- Purcell, Deirdre, 1945-
- Purcell, Dierdre, 1945-
- Purcell, Henry, 1659-1695
- Purcell, Jeremiah, 1893-1950
- Purcell, John, bishop of Ferns, fl.1459-1499
- Purcell, John Baptist, bishop, 1800-1883
- Purcell, Jordan, bishop of Cork and Cloyne, fl.1429-1469
- Purcell, Noel, 1900-1985
- Purcell, Phil, 1928--2018
- Purcell, Thomas Pierce, 1851?-1939?
- Purcell, Thomas T., 1848-1930
- Purcell, William T., 1898-1957
- Purcell family
- Purchas, Samuel, 1577-1626
- Purdie, Bob, 1940-2014
- Purdon (née Ponsonby), Louisa, d.1873
- Purdon, Edward, b. c 1805, d. 1888
- Purdon, Katherine Frances, 1852-
- Purdon, Simon George, c.1797-1862
- Purdon family
- Purdy, Al, 1918-2000
- Purdy, Jim, 1934-
- Puricelli, Giovanni Pietro, 1589-1659
- Purser, Annie, fl.1895-1918
- Purser, Richard, fl.1895-1928
- Purser, Sarah, d. 1943
- Purser, Sarah Henrietta, 1848–1943
- Purser, Sean, 1906-1988
- Purser, Thomasina, fl.1883-1919
- Purser family
- Purtill, Michael Charles, 1846-1914
- Pusey, Edward Bouverie, 1800-1882
- Putin, Vladimir Vladimirovich, b.1952
- Putland, George
- Putland, John, 1710-1773,
- Putland family
- Puxley, John, d.1754
- Puxley family
- Pye, Patrick, 1929-
- Pye, Patrick, b. 1929
- Pym, John, 1584-1643
- Pyne, Jasper Douglas, 1847-1888
- Pyne, Jimmy, b.c.1927
- Pyne family
- Pyne family (of Ballyvolane [County Cork] and Codham [Essex])
- Pyne family ; Corban-Lucas family
- Pynnar, Nicholas, fl. 1600-1644?
- Pyper, George West, b.1908
- Pytheas
- Pückler-Muskau, Hermann, Fürst von, 1785-1871
- Quain, Jones, 1794-1865
- Quain, Jones, 1796-1865
- Quain family
- Quane family
- Quaney, Kyran, 1860-
- Quarry, Jephson, fl. 1841
- Quarton, (née Smethwick) Marjorie, 1930-
- Quatermass family
- Queenan, Joe, 1950-
- Quellin, Arnold, 1653-1686
- Queriske (Whoriskey), Dermott, d.1736
- Quetzalcoatl
- Quiggin, Edmund Crosby, 1875-1920
- Quigley, Ernest, d.1913
- Quigley, Frederick, d.1913
- Quigley, Hugh, fl. 1800-1900
- Quigley, Jane, fl.1905-1957
- Quigley, Kathleen Rose, 1904-1996
- Quigley, Mary, d.2008
- Quigley, Michael, 1822-1897
- Quigley, Patrick, 1861-
- Quill, Michael Joseph, 1905–1966
- Quill, Mike, 1905-1966
- Quill, Shirley, fl.1943-1985
- Quilton, Edward, c.1842-1920
- Quin, Charles, canon
- Quin, Cosslett, 1907-1995
- Quin, Cosslett, Rev., 1907-1995
- Quin, Ernest Gordon, 1910-1986
- Quin, Henry, 1760-
- Quin, Henry 1717–1791
- Quin, Henry George, 1760-1805
- Quin, James, fl.1700-1719
- Quin, John, fl.1840-1870
- Quin, John James, 1843-1897
- Quin, Mark, -1674
- Quin, Patrick, 1745-1812
- Quin family
- Quinlan, James (1833-1906)
- Quinlan, James, fl. 1826
- Quinlan, Linda
- Quinlan, Pat, Commandant, 1919-1997
- Quinlan, Thomas, bishop, 1896-1970
- Quinlan family
- Quinlisk, Timothy Henry, 1895-1920
- Quinlivan, Aodh
- Quinn, Bob, 1935-
- Quinn, D. B. (David Beers)
- Quinn, David Beers, historian, 1909-2002
- Quinn, Edel, 1907-1944
- Quinn, Edward (Ned), fl. 1914-1944
- Quinn, Ernest Gordon, 1910-1986
- Quinn, Feargal, b. 1936
- Quinn, Hubert, 1901-1972
- Quinn, Hugh, Jr., fl. 1817
- Quinn, James 'Jim', 1930-2015
- Quinn, James, 1881-1944
- Quinn, James, 1961-
- Quinn, James, fl. 1902
- Quinn, John, 1827-1888
- Quinn, John, 1870-1924
- Quinn, John, 1941-
- Quinn, John Francis, 1925-1996
- Quinn, Mary, fl.1828
- Quinn, Michael, d.1990
- Quinn, Patrick (Paddy), f.1921-1976
- Quinn, Rose, 1870-1907
- Quinn, Seán, 1947-
- Quinn, Simon, 1921-2011
- Quinn, Thomas Joseph, d. 1934
- Quinn, Tony, d. 2008
- Quinn, William Hayes, 1887-1943
- Quinn family
- Quirke, Thomas Aquinas, Monsignor, 1845-1945
- Quitman, John A., 1799-1858
- Rabbitt family
- Rabelais, Francois, c.1494-?1553
- Rabelais, Francois, c.1494-?1553 ; Ó Neachtain, Seán, c.1640-1729
- Rackard, Liz
- Radcliff, Stephen, Rev., 1678-
- Radcliff, Stephen, Revd, 1678-
- Radcliffe, Frances Sidney, countess of Sussex, d.1589
- Radcliffe, George, Sir, 1593?-1657
- Radcliffe, Thomas, 3rd earl of Sussex, 1526-1583
- Radegund, Saint, d. 587
- Radford, Courtenay Arthur Ralegh, 1900-1998
- Rae, John, 1796-1872
- Raeside, Archie
- Rafferty, Kevin, 1936-
- Rafferty, Pat John, 1940-2009
- Raffles, Thomas Stamford, Sir, 1781-1826
- Rafroidi, Patrick, fl. 1971
- Raftery, Anthony, 1779-1835
- Raftery, Barry (1944-2010)
- Raftery, Barry, 1944-2010
- Raftery, Joseph, 1913-1992
- Raftery, Mary, 1957-2012
- Raftery, Anthony, 1779-1835
- Raiftearaí, Antaine (Ó Reachtabhra, Antoine; Raftery, Anthony), 1799-1835
- Railton, Ruth [married name King], 1915–2001
- Rainsford, William S., 1850-
- Ralegh, Walter, Sir, 1552?-1618
- Ralegh, Walter, Sir, 1554?-1618
- Ralegh family
- Raleigh, Walter, Sir, c.1554-1618, see Ralegh, Walter, Sir, 1554?-1618
- Raleigh family
- Rambaut, Paul, 1940-
- Rambaut family
- Ram family
- Ramsay, Alan Livingston, 1890-1916
- Ramsay, Allan, 1684-1758
- Ramsay, James, d.1760
- Ramsay, Robert, 1940-
- Ramsay family
- Ramsbottom, Patrick Joseph (Paddy), 1891-1965
- Ranahan family
- Ranalow, Frederick Baring, 1873-1953
- Rand, Ellen Emmet, fl. 1900
- Randall, Joseph, c.1822-1868
- Randall, Martha, fl.1853
- Randall, Thomas Head, 1903-1994
- Randall family
- Ranjitsinhji, Kumar Shri, see Ranjitsinhji Vibhaji, Maharaja Jam Sahib of Nawanagar, 1872-1933
- Ranjitsinhji Vibhaji, Maharaja Jam Sahib of Nawanagar, 1872-1933
- Ranjitsinhji Vibhaji,Maharaja Jam Sahib of Nawanagar, 1872-1933
- Ranke, Clarissa von, née Graves
- Ranke, Leopold von, 1795-1886
- Raphael family
- Rappoport, Shloyme Zanvl, 1863-1920
- Rastell, John, c.1475-1536
- Ratford, Thomas, fl. 1542
- Rath, Richard, fl. 1413
- Rathbone, William, 1787-1868
- Rathborne, John G., candle maker
- Rathold de Pászthó, Laurent (Tar, Lorinc)
- Rattigan, Bartholomew, 1812-1904
- Rattigan, John, c.1864-1936
- Raumer, Friedrich von
- Raven, Thomas
- Rawdon, Arthur, 2nd baronet, 1662-1695
- Rawdon, Arthur, 2nd baronet, 1662–1695
- Rawdon, Arthur, 2nd baronet, 1662–1695,
- Rawdon, Arthur, Sir, fl. 1690
- Rawdon, George, Sir, 1st baronet, 1604–1684,
- Rawdon, George, Sir, 1604-1684
- Rawdon, John, Sir, 1690-1724
- Rawdon, Selina, Countess of Granard, 1759-1827
- Rawdon family
- Rawlinson, Henry, Sir, 1864-1925
- Raymond, Anthony, 1675-1726
- Raymond, James, 1786?-1851
- Raymond, Raymond James, 1957-
- Rea, John, fl.1760-1772
- Rea, Samuel, 1725-1811
- Rea, Stephen, 1946-
- Read, Donald
- Read, Patrick Joseph, 1899-1947
- Reade, Amos, fl.1886
- Reade, John, 1766-1848
- Reade, John, 1837-1919
- Reade, Loftus, Lieutenant, 1881-1914
- Reade, Philip
- Reade, Phillip, 1793-1883
- Reade, Thomas Mellard, 1832-1909
- Reade family
- Read family
- Rea family
- Reagan, Ronald, president
- Reagan, Ronald Wilson, 1911-2004
- Reagan family
- Reale, Seamus, d.1914
- Real family
- Reamsbottom, William Morley, c.1860-1937
- Reap, Michael, d. 1878
- Rearden, John, 1837-1913
- Reavey, George, fl. 1930
- Reavy, Edward V., 1895-1988
- Redden, Laura, Catherine, 1839-1923
- Reddin, Teresa,(née Sheils), 1869-1949
- Reddy, Patrick, fl. 1890
- Redington, Matilda, c.1851-1923
- Redington, Thomas Nicholas, 1815-1862
- Redington family (of Clarinbridge)
- Redmond, Bridget Mary, 1904-1952
- Redmond, J.P. 1824-1902
- Redmond, Jack, 1927-2000
- Redmond, James, d.1917
- Redmond, John
- Redmond, John Edward, 1856-1918
- Redmond, John Edward, 1856-1918 ; Parnell, Charles Stuart, 1846-1891
- Redmond, John Edward, 1856–1918
- Redmond, John James, fl.1919-1922
- Redmond, Johnston
- Redmond, Lillie, d.2007
- Redmond, Mary, 1863-1930
- Redmond, Mary, 1920-
- Redmond, Nicholas, fl. 1798
- Redmond, Pat, 1951-2007
- Redmond, Philip, fl.1875-1900
- Redmond, Séamus, 1925-1996
- Redmond, Tom, 1938-2015
- Redmond, William Archer, 1886-1932
- Redmond, William Hoey Kearney, 1861-1917
- Redmond family
- Redmond family, 1200-1763
- Redpath, James, 1833-1891
- Redpath, James, fl.1880
- Reed, Carol, Sir, 1906-1976
- Reed, Isaac, 1742-1807
- Reed, Robert, 1723-1788
- Reed, William, 1770-?1813
- Reen, Peter Albertus, Brother, 1889-1990
- Rees, David Bartlett, 1936?-1993?
- Rees, Harding, 1880-1966
- Rees, Merlyn, 1920-2006
- Rees, Merlyn, baron Merlyn-Rees, 1920-2006
- Rees, Thomas, 1815-1885
- Rees family
- Reeve family
- Reeves, Paget Edward Stuart (1862-post 1911)
- Reeves, William, 1815-1892
- Reeves family
- Regan, John M., 1889-1971
- Regan, John M., fl. 2013
- Regan, Maurice
- Regan, Michael Augustine
- Regan family
- Reginald of Durham
- Rehan, Ada, 1860-1916
- Reid, Christina, 1942-2015
- Reid, Eileen, 1943-
- Reid, Forrest, 1875-1947
- Reid, Graham, 1945-
- Reid, James Seaton, 1798-1851
- Reid, Mayne, 1818-1883
- Reid, Meta Mayne, 1905-1990
- Reid, Nano (Anne Margaret), 1900-1981
- Reid, Nano, 1905-1981
- Reid, Noel, 1924-1998
- Reid, Sean, 1907-1978
- Reid, Thomas, 1791-1825
- Reid, Thomas Mayne (1818-1883)
- Reid, Tommy, b. 1915
- Reid family
- Reidy, Ellen, 1793-1907
- Reidy, Thomas, Constable
- Reigh, J.D., d. 1914
- Reihill, Annie McManus, 1890-1972
- Reihill, John James, 1939-2019
- Reilly, Anthony Adams, 1836-1885
- Reilly, Bernard, fl. 1824
- Reilly, Catherine, b. 1919
- Reilly, Charles
- Reilly, Charles Lewis
- Reilly, Eileen, 1970-2018
- Reilly, Ellen, 1838-1916
- Reilly, John, d.1895
- Reilly, Joseph Thomas, 1836-1915
- Reilly, Mary, b. c 1857
- Reilly, Paddy, 1939-
- Reilly family
- Reily, D. A.
- Reinhard, Otto, 1898-1947
- Rekdal, Jan-Erik, 1951-
- Remmel, Herbert, 1937-
- Renan, Ernest, 1823-1892
- Renard-Goulet, Yann, 1914-1999
- Renehan, Laurence, 1797/8 - 1843/5
- Reney, John Francis, 1880-1954
- Reni, Guido, 1575-1642
- Renihan, Michael, 1849-1927
- Rennick, Sheila, b. 1983
- Rennie, John, 1761-1821
- Rennie, John, 1761–1821
- Rennie, John, Sir, 1794-1874
- Rennison, W. H., Revd, d. 1937
- Renouf, Louis P., 1887-1968
- Renouf, Peter le Page, 1822-1897
- Renowden, Joseph, b. 1794, d. c 1833
- Rentoul, Alexander, d.1864
- Rentoul, James, 1761-1839
- Rentoul, James Alexander, d.1919
- Rentoul, John Laurence, 1846-1926
- Rentoul family
- Renzy, Matthew de, Sir, 1577-1634
- Repton, Humphry, 1752-1818
- Repton, Humphry, 1752–1818
- Restorick, Stephen, 1973-1997
- Reussen, Canon E.
- Reuter, Julius, 1816-1899
- Reuter, William C.
- Reville, Aidan, fl.1926-1969
- Rey family
- Reynett family
- Reynold, Gonzague de, 1880-1970
- Reynolds, Albert, 1932-
- Reynolds, Albert, 1932-2014
- Reynolds, Augustus Percival Harald (‘Percy’), 1895-1983 ; O'Connor, Patsy, c.1897-1915
- Reynolds, Charles (c.1497-1535/36)
- Reynolds, Doris Livesey, 1899-1985,
- Reynolds, George Nugent, 1767-1802
- Reynolds, George William MacArthur, 1814-1879
- Reynolds, Gerry, 1935-2015
- Reynolds, Gerry, Fr., 1935-2015
- Reynolds, Hannah, fl.1879-1882
- Reynolds, James, c.1765-1808
- Reynolds, James Henry, 1844-1932
- Reynolds, Joshua, 1723-1792
- Reynolds, Joshua, Sir, 1723-1792
- Reynolds, Joshua, Sir, 1723–1792
- Reynolds, Lawrence, 1803-1887
- Reynolds, Mary Antonia, 1901-1921
- Reynolds, Michael, fl. 1798
- Reynolds, Molly
- Reynolds, Osborne, 1842-1912
- Reynolds, William, 1842-1881
- Reynolds, [Boxer], d.1832
- Reynolds family
- Rezek, Patricia Jane, d. 1999
- Rhain, king, d. 1022
- Rhea, Joseph, 1715-1777
- Rhodes, Cecil John, 1853-1902
- Rhygyfarch ap Sulien, 1056-1099
- Rhys, John, 1840-1915
- Rhys, John, Sir, 1840-1915
- Rhys ap Gruffudd, prince of Deheubarth, c.1133-1197
- Riall, John Lewis, 1838-1930
- Rian, George, 1748-1805
- Ricards, James David, bishop, d. 1893
- Ricciardelli, Gabriele, fl. 1745-1777
- Rice, Anne, d.2021
- Rice, Charles Owen, Mgr, 1908-2005
- Rice, Count James Louis, 1730-1801
- Rice, Edmund, 1762-1844
- Rice, Edmund, 1762-1844 ; Cahill, William, c.1771-1843 ; Healy, James, c.1764-1844 ; Cahill, Thomas, 1781-1858
- Rice, Edmund Ignatius, 1762-1844
- Rice, Edmund Ignatius, 1766-1844
- Rice, Gerard, Very Rev., 1937-2020
- Rice, John Valentine, Prof., 1935-2006
- Rice, Lena, d. 1907
- Rice, Mary, d. 1789
- Rice, Mary Ellen Spring, 1880-1924
- Rice, Mary Spring
- Rice, Patrick, 1945-2010
- Rice, Peter, 1935-1992
- Rice, Peter Ronan, 1935-1992
- Rice, Rosaleen (née Kinsella), 1945-2009
- Rice, Stephen Edmond Spring, Hon. 1814-1865
- Rice, Thomas, d.1915
- Rice, Thomas, fl. 1904
- Rice, Thomas Spring, 1st Baron Monteagle of Brandon, 1790–1866
- Rice, Thomas Spring-, 1st baron Monteagle, 1790-1866
- Rice, Thomas Spring-, 1st Baron Monteagle of Brandon, 1790–1866
- Rice family
- Rice family (of Mountrice)
- Rich, Barnabe, 1540-1617
- Rich, Barnabe, 1540?-1617
- Rich, Barnabe, 1542-1617
- Rich, Henry, 1st baron Kensington and 1st earl of Holland, 1590-1649
- Rich, Robert, 2nd earl of Warwick, 1587-1658
- Rich, Robert, 2nd earl of Warwick, 1587–1658
- Richard, duke of York, 1411-1460
- Richard Colihan, P.P., fl.1883-1918
- Richard Conway (d. 626), Thomas Briones (d. 645), Richard Lynch (d. 647), Peter White (d. 678),Malone, William (d. 656) ; Ussher, John (d. 698) ; Lombard, Ignatius (d.669) ; Butler, Thomas (d. 705)
- Richard I, king, 1157–1199
- Richard II, king, 1367-1400
- Richard III, king, 1452-1485
- Richard Marshal, earl of Pembroke and Striguil, d. 1234
- Richards, Edward Moore, c1827-1911
- Richards, Elizabeth, 1778-1863
- Richards, Elizabeth, d. 1863
- Richards, Jacob, 1660?-1701
- Richards, John, 1669-1709
- Richards, Mark
- Richards, Mark, F.R.S.S.
- Richards, Michael, 1673-1721
- Richards family
- Richardson (née Monroe), Dorothea (Dolly),c.1753/4-1793
- Richardson, Albert Edward, Sir, 1880-1964
- Richardson, Andrew John, 1955-1998
- Richardson, George, V.C., 1831-1923
- Richardson, James Nicholson, d. 1921
- Richardson, John, 1669-1747
- Richardson, Robert, fl.1666-1685
- Richardson, Samuel, 1689-1761
- Richardson, Samuel, 1689-1761 ; Swift, Jonathan, 1667-1745
- Richardson, William, 1740-1820
- Richardson, William, 1740–1820
- Richardson, William, d. 1820
- Richardson family
- Richelieu, Cardinal
- Richter, Michael, 1943-2011
- Rickarbee, Peter, fl. 1630-1671
- Rickard, Jessica Louisa (née Moore), 1876-1963
- Rickard, Jessie Louisa (Louie), 1876-1963
- Rickard, Jessie Louisa, née Moore, 1876-1963
- Rickard, Victor George Howard, c,1873-1915
- Rickard, Victor George Howard, d.1915
- Rickman, Thomas
- Riddell, Charlotte, 1832-1906
- Riddell, Charlotte Eliza Lawson, 1832-1906
- Ridelesford (Ridelaford), Haket de fl. 1207-1238
- Rider, John, fl. 1601
- Ridge, John, 1878-1958
- Ridge, Seamus, fl. 1922
- Ridgeway, Keith, 1965-
- Ridgeway, William, 1765-1817
- Ridgway, Keith, b.1965
- Rielly, Mary, c. 1857-
- Rigby, John, 1758-1818
- Rigg, A. G.
- Rigg, J. M. (James Macmullen), 1855-1926
- Rigley (Wrigley) family
- Ring, Christy, 1920-1979
- Ring, Christy, > 1920-1979.
- Ring, John M., 1876-1960
- Ring, Joseph (Michael Joseph, Joe), 1891-1922
- Ring, Michael Joseph, 1891-1922
- Ringrose family
- Ringwood, Richard, c.1799-1881
- Rinuccini, GianBattista, 1592-1653
- Rinuccini, Giovanni Battista, bishop, 1592-1653
- Rinuccini, Giovanni Battista, bishop, 1592-1653
- Rinuccini, Giovanni Battista, bishop, 1592-1653,
- Rioc, saint
- Riordan, Jim, 1898-1947
- Riordan, Michael Paul, 1789-1862
- Riordan, Patrick, 1832-1907
- Riordan, Patrick, c.1841-1871
- Rishworth, Frank Sharman, 1876-1960
- Ritchie, Charles, 1906-1995
- Ritchie, Jean, 1922-
- Ritter, Carl, 1779-1859
- Rivers, Elizabeth Joyce, 1903-1964
- Riversdale, Caroline Alcock-Stawell, d. 1915
- Rivers family
- Roach, John, 1813-1887
- Roach, Thomas W., 1894-1918
- Roantree, James, 1834-1873
- Roantree, William Francis, 1829-1918
- Roantree family
- Robb, Colin Johnston, 1901-post-1976
- Robb, James
- Robbins, Edward, fl. 1844-1912
- Robbins family
- Robert, Nicolas, 1733-1808
- Robert fitz Harding, d. 1171
- Robert I, king of Scots, 1274-1329
- Robert of Torigni, c. 1110-1186
- Roberts, Celine, 1948-
- Roberts, Evan, 1878-1951
- Roberts, Frederick Sleigh, 1st Earl Roberts, 1832–1914
- Roberts, H. Neville, 1882-1966
- Roberts, John, 1716-1796
- Roberts, Monica, fl. 1914-1918
- Roberts, Monica Katherine, 1889-1975
- Roberts, Ronald (Ronnie), d.2016
- Roberts, Samuel, 1821-1900
- Roberts, Samuel Usher, 1821-1900
- Roberts, Thomas, 1748-1778
- Roberts, Thomas, 1748–1778
- Roberts, Thomas c.1749-1778
- Roberts family
- Robertson, Daniel, d.1849
- Robertson, Daniel, fl. 1800-1843
- Robertson, Francis, 1737-1791
- Robertson, Francis, 1737/8-1791
- Robertson, George, d. 1920
- Robertson, J. Stuartfl.1918-1958
- Robertson, James George, 1816-1900
- Robertson, Manning Durdin, 1887–1945
- Robertson, Nora, fl. 1960
- Robertson, William
- Robertson, William, 1721-1793
- Robertson, William, 1770-1850
- Robertson, William, c.1784-c.1875
- Robertson family
- Robinett family
- Robinsom, Samuel, 1776-1857
- Robinson, Anita
- Robinson, Aston, fl.1915-1945
- Robinson, Bob Jack, fl.1930-1955
- Robinson, Bryan, 1680-1754
- Robinson, Buck Alec, 1901-1995
- Robinson, Charles Wesley, 1845-1874
- Robinson,Constance Gwladys. Lady de Grey 1859-1917
- Robinson, Damien C., 1928-2004
- Robinson, Esmé Stuart, Lennox, 1886-1958
- Robinson, Esmé Stuart Lennox, (1886-1958)
- Robinson, Frederick Cayley, 1862-1927
- Robinson, George, c.1821-1893
- Robinson, George, d. 2000
- Robinson, George, Revd, 1824?-1894
- Robinson, George Frederick Samuel, 1st marquess of Ripon, 1827-1909
- Robinson, Henry Augustus, Sir, 1857-1927
- Robinson, Iris, née Collins, b.1949
- Robinson, Jackie, 1957-
- Robinson, James, 1797-1868
- Robinson, James, fl.1846
- Robinson, John, 1767-1822
- Robinson, John Loftus, 1848-1894
- Robinson, Lennox (1886-1958
- Robinson, Lennox, 1886-1958
- Robinson, Mark
- Robinson, Mary, 1944
- Robinson, Mary, 1944-
- Robinson, Mary, b. 1944
- Robinson, Nicholas, bishop, c.1530-1585
- Robinson, Norman, 1917-1943
- Robinson, Paschal, 1870-1948
- Robinson, Peter, fl. 1823
- Robinson, Richard, 1st baron Rokeby, bishop, 1709-1794
- Robinson, Richard, 1709-1794
- Robinson, Richard, bishop, 1709-1794
- Robinson, Richard, d. 1764
- Robinson, Samuel, 1865-1958
- Robinson, Stuart, d. 1881
- Robinson, Séamus (1890–1961)
- Robinson, Séamus, 1890 -1961
- Robinson, Thomas Romney, 1793-1882
- Robinson, Tim, 1935-
- Robinson, Tim, 1935-2020
- Robinson, William, 1838-1935
- Robinson, William, 1838–1935
- Robinson family
- Robinson family (of Kildare)
- Robinson Richard, 1st baron Rokeby, bishop, 1709-1794
- Robson, William, d.1618
- Roch, James 1659-1723
- Rocha, Simone, b. 1986
- Roche, Alexis Charles Burke, 1853-1914
- Roche, Benjamin Robert, fl. c.1871-1919
- Roche, Daniel, SJ
- Roche, David 'Tiger', c.1739-1779
- Roche, Edward, 1759-1798
- Roche, Edward Patrick, Archbishop, fl. 1915-1950
- Roche, Jack, 1940-2024
- Roche, Jack, d.1962
- Roche, James, 1770-1853
- Roche, James, fl. 1851-1864
- Roche, James, Parish priest of Wexford, d. 1883
- Roche, James, Revd., d. 1883
- Roche, Jeffrey (1847-1908)
- Roche, Jim, 1937-
- Roche, John
- Roche, John 'Johnny', c.1804-1884
- Roche, John, 1947-
- Roche, John, Revd, 1947-
- Roche, Kevin, 1922-
- Roche, Matt, d.2009
- Roche, Oisín
- Roche, Pat, 1905-2004
- Roche, Patrick, fl. 1621
- Roche, Philip, d. 1798
- Roche, Simon, 1831-1909
- Roche, Thomas, 187?-1914
- Roche, Vivienne, b. 1953
- Roche, William, bishop of Cork and Cloyne, fl.1472-1490
- Rocheblave, Henri de, 1665-1709
- Roche family
- Roche family ; FitzGerald family ; Mac Carthaigh Riabhach family
- Rochford, John, of Kilbride, ?d.1637
- Rochford, Luke, d. c 1631
- Rochford, Paddy, 1926-2019
- Rochford family
- Rochfort, David, fl. 1791
- Rochfort, John Burgh, 1838-1908
- Rochfort, Robert, 1st earl of Belvidere, 1708-1774
- Rochfort, Robert, 1775-1811
- Rochfort, William, 1847-1940
- Rock, Sean, b.1926
- Rockwell, Robert H., 1885-1973
- Rocque, John, 1704?-1762
- Rocque, John, originally Jean; c. 1704-1762
- Roddy family
- Rodenberg, Julius
- Roden family
- Rodgers, Michael, 1931-2010
- Rodgers, Patsy Dan
- Rodgers, Paul
- Rodgers, Rose, d.1867
- Rodgers, W. R., 1909-1969
- Rodriguez, Alonso, 1532-1617
- Roe, Edward, d.2009
- Roe, George, 1796-1863
- Roe, Helen Maybury, 1895-1988
- Roe, John, Revd, fl. 1910-1921
- Roe, Stephen, ?
- Roe, Thomas, d.1847
- Roe, Thomas, Sir, 1581–1644
- Roe family
- Roelofs, Helen Hooker O'Malley, 1905-1993
- Roen, king, d. 1027
- Rogan, Hugh, d. c.1800
- Rogan family
- Roger Bacon, 1214-1292
- Rogers, Christopher, 1880-1915
- Rogers, Fiona, d.2015
- Rogers, Guy, fl. 1956
- Rogers, James, d.1947
- Rogers, John, 1627-
- Rogers, Joseph
- Rogers, Joseph, 1676-1757
- Rogers, Pat
- Rogers, Patrick Kerr, 1776-1828
- Rogers, William Barton (1804-1882)
- Rogers family
- Rohan, Kevin
- Rohu, Frederick R., c.1846-1930
- Rolfe, Nigel
- Rollenston, Thomas W., 1857-1920
- Rolleston, Thomas, William, Hazen, 1857-1920
- Rolleston, Thomas William, 1857-1920
- Romegas, Mathurin d'Aux et de L'Escout
- Romilly, Samuel, Sir, 1757-1818
- Ronan, Saint
- Ronan, Saint, d. 664
- Ronan, William, S.J., 1825-1907
- Ronan Finn (Saint)
- Ronayne, Dominick
- Ronayne, Edmond, 1832-1911
- Ronayne, Philip
- Rooke, George, Sir, c.1650-1709
- Rooney, John, 1826-1850
- Rooney, John, fl.1866-1893
- Rooney, John, Revd., d.1850
- Rooney, Katherine (née Cusack), fl.1868-1893
- Rooney, Michael
- Rooney, Padraig, b.1956?
- Rooney, Philip, 1907-1962
- Rooney, William
- Rooney, William, 1873-1901
- Rooney family
- Roosevelt (Jr), Theodore, 1858-1919
- Roosevelt, Franklin D., 1882-1945
- Roosevelt, Franklin Delano, 1882-1945
- Roosevelt, Theodore (1858-1919)
- Roosevelt, Theodore, 1858-1919
- Roper, Esther, 1868-1938
- Roper, Moses, 1815-1891
- Roper, Richard, ca. 1730-1775
- Roper family
- Roque, John, fl. 1756
- Rorke, Richard, 1805-
- Rorke, William, 1818-1901
- Ros, Amanda McKittrick, 1860-1939
- Rosa, Salvator
- Rosbottom, Lorna Gwynfa, 1914-1999
- Rose, Hugh Henry, Baron Strathnairn, 1801-1885
- Roseingrave family
- Rosen, Conrad, Marshal of France, 1629-1715
- Rosenblatt, Stuart
- Ross, David, 1804-1866
- Ross, Hamilton, 1774-1853
- Ross, Jane, 1810-1879
- Ross, John
- Ross, Martin 'see' Violet Florence Martin
- Ross, Martin (Martin, Violet Florence), 1862-1915
- Ross, Noel, 1936-2021
- Ross, Orlaith
- Ross, Peter, 1914-1991
- Ross, Robert, 1766-1814
- Rossa, Jeremiah O'Donovan, 1831-1915
- Rosse, family
- Rosse, Lawrence Parsons, 4th earl of
- Rosseter family
- Rossetti, Christina Georgina, 1830-1894
- Rossetti, Dante Gabriel, 1828-1882
- Ross family
- Rossiter family
- Rosvall, Kari, 1944-
- Roth, Edward, 1922–1976
- Roth, Edward fitz Peter, c.1615-1664
- Roth, Joan
- Roth, John fitz Peter, c.1618-1690
- Roth, William
- Rothe, David, bishop, c.1573-1650
- Rothe, John, fl. 1594-1601
- Rothe, John Fitzpiers, c.1550-1621
- Rothe family
- Rothe family (of Kilkenny)
- Rothery, Isaac, fl.1720-1737
- Rothery, Sean 1928-2024
- Roth family
- Rothschild, Lionel Nathan de, Baron de Rothschild in the nobility of the Austrian empire, 1808-1879
- Rothwell, Richard, 1800-1868
- Rothwell family
- Rotmar, Valentin, -1580
- Rotten, Johnny see Lydon, John, 1956-
- Rouault, Georges, 1871-1958
- Rougemont, Denys Louis de, 1906-1985
- Roughan, James, 1827-1913
- Roughan, Michael, d.1860
- Roughan, Peter, 1896-1973
- Roulston (Rolleston), Richard, fl.1611-1619
- Round, John Horace, 1854-1928
- Rourke, Grellan D.
- Rourke [Ruerk], Anthony, fl.1746,
- Rousseau, Jean-Jacques, 1712-1778
- Rowan, A. S.
- Rowan, Andrew, fl. 1680
- Rowan, Archibald Hamilton, 1751-1834
- Rowan, Archibald Hamilton, 1751-1834 : Tandy, James Napper, 1737?-1803 : Turner, Samuel, 1765-1810
- Rowan, Arthur Blennerhasset, 1800-1861
- Rowan, Sydney Hamilton, d. 1858
- Rowcroft, Charles, 1798-1856
- Rowe, John, fl.1830-1853
- Rowe family
- Rowland, Frideswide Fanny, 1845-1919
- Rowles family
- Rowley, George, 1943-
- Rowntree, Benjamin Seebohm, 1871-1954
- Rowntree, Kenneth, 1915-1997
- Rowse, Alfred Leslie, 1903-1997
- Rowsome, Leo, 1903-1970
- Rowsome family
- Roy, James Charles, 1945-
- Roy, William, 1726-1790
- Roynayne, Philip, fl. 1717
- Ruadhán, Saint
- Ruadhán, saint, of Lorrha d. 584
- Ruadán, abbot of Lorrha, d. 584
- Ruane (?Ryan), James, (Buck) c.1838-1883
- Rubens, Peter Paul, 1577-1640
- Ruby, M. Joseph, fl. 1935
- Rudd family
- Ruddock, Alwyn Amy, d. 2005
- Ruddock, Norman, fl. 1950-2000
- Rudmose-Brown, T. B., 1878-1942
- Rufinus, d. 410
- Ruiséal. Liam, fl. 1978
- Rundlett, Richard Tucker, 1844-1901
- Runnett family
- Rupert, prince and count palatine of the Rhine and duke of Cumberland, 1619–1682
- Rushton, Edward, 1756-1814
- Ruskin, John, 1819 - 1900
- Ruskin, John, 1819-1900
- Ruskin, John, 1819–1900
- Rusnak, John, fl. 2002
- Russel, George William, 1867-1935
- Russell, Baptist, Mother
- Russell, Bartholomew Thomas, 1799-1890
- Russell, Bartholomew Thomas, S.T.M., prior, 1799-1890
- Russell, Bertrand, 1872-1970
- Russell, Bertrand Arthur William, 3rd earl Russell, 1872-1970
- Russell, Charles William, 1812-1880
- Russell, Conrad Sebastian Robert, 5th earl Russell, 1937-2004
- Russell, Francis, 4th earl of Bedford, 1587-1641
- Russell, Francis, 5th Duke of Bedford, 1819-1891
- Russell, Francis, fifth Duke of Bedford, 1819-1891
- Russell, George 'AE'
- Russell, George William (AE), 1867-1935
- Russell, George William, 1867-1935
- Russell, Henry, count, 1834-1909
- Russell, James, 1877-1957
- Russell, John, 1st earl Russell, 1792-1878
- Russell, John, 4th duke of Bedford, 1710-1771
- Russell, Lord
- Russell, Margaret (Ruiséil, Méig), c.1618-1676
- Russell, Margaret, 1618-1676
- Russell, Matthew, 1834–1912
- Russell, Micho, 1915-1994
- Russell, Packie, 1920-1977
- Russell, Peter, 1733-1808
- Russell, Richard, 1803-1871
- Russell, Richard. JP. d/1871
- Russell, Seán (John), 1893–1940
- Russell, T. M., 1868-1932
- Russell, Thomas, 1767-1803
- Russell, Thomas , 1767-1803
- Russell, Thomas, 1767–1803
- Russell, Thomas, Baron Killough, fl. 1856
- Russell, Thomas 1896-1918
- Russell, Thomas c. 1823
- Russell, Thomas O'Neill, 1828-1908
- Russell, Thomas Wallace
- Russell, Thomas Wallace, 1841–1920
- Russell, William
- Russell, William, 1st Baron Russell of Thornhaugh (died 1613), Lord Deputy of Ireland
- Russell, William, 1st Baron Russell of Thornhaugh, c.1553-1613
- Russell, William, Sir
- Russell, William Howard, 1820-1907
- Russell, William Howard, Sir, 1820-1907
- Rutherford, Ernest, baron Rutherford of Nelson, 1871-1937
- Ruthven, John, 3rd earl of Gowrie, 1577x8-1600
- Rutledge, John, d. 1857?
- Rutledge, William, 1806-1876
- Ruttledge family
- Rutty, John, 1697-1775
- Rutty, John Dr. 1698-1775
- Ruvigny, Henri de Massue, marquis de, earl of Galway, 1648-1720
- Ruxton family
- Ryan (Ní Riain), Agnes, 1890-1971
- Ryan, Abram
- Ryan, Arthur, 1852-1922
- Ryan, Arthur, 1897-1982,
- Ryan, Arthur, Msgr, fl.1931-1945
- Ryan, Bernard, d.1921
- Ryan, Bob, fl. 1950-2000
- Ryan, Brigid (née Brophy), fl.1917-1951
- Ryan, Conor (Conchubhar Ó Riain), 1744-c.1826
- Ryan, Cornelius John, 1920–1974
- Ryan, Daniel
- Ryan, Daniel, 1714-
- Ryan, Delia, 1901-
- Ryan, Desmond, 1893-1964
- Ryan, Desmond, 1893–1964
- Ryan, Edmund, d.1788
- Ryan, Edward, d.1900
- Ryan, Eileen, 1923-
- Ryan, Francis Richard ('Frank'), 1902-44
- Ryan, Frank, 1902-1944
- Ryan, Frank, 1902-1944,
- Ryan, Gerald, b.1928
- Ryan, Gerry, 1956-2010
- Ryan, Henry Joseph, 1878-1918
- Ryan, Hugh, 1873-1931
- Ryan, Innocent, fl. 1918
- Ryan, Jack, fl.1940-1976
- Ryan, James (Séamus), 1893-1933
- Ryan, James, 1822-
- Ryan, James, d. 1847
- Ryan, James, d. 1889
- Ryan, James, d. 1895
- Ryan, James, fl. 1896-1921
- Ryan, James, fl 1800
- Ryan, Jim, 1954-
- Ryan, Joe, 1927-
- Ryan, John, 1768-1811
- Ryan, John, 1805?-1849
- Ryan, John, 1925-1992
- Ryan, John, Count, d.1727
- Ryan, John, SJ, 1894-1973
- Ryan, Johnny, fl. c.1922-c.1940
- Ryan, Joseph, d. 1918
- Ryan, Kathleen, 1922-1985
- Ryan, Luke, 1750-1789
- Ryan, M.J., d.1952
- Ryan, Mark Francis, 1844-1940
- Ryan, Martin, P.P., fl.1847-1854
- Ryan, Matt, Fr,, 1843-1937
- Ryan, Michael, c.1897-1918
- Ryan, Mr Justice Seán
- Ryan, Nicholas Shaun, 1950-
- Ryan, P. J. ('Cushy'), 1900-1974
- Ryan, Paddy, fl. c.1911-c.1922
- Ryan, Patrick (Pádrig Ó Mreinn), c.1798-1875
- Ryan, Pauline
- Ryan, Peter Joseph, 1893-1918
- Ryan, Phil, fl 1976-1982
- Ryan, Philip, 1802-1900
- Ryan, Philomena Frances (Phyllis O'Kelly), 1895–1983
- Ryan, Phyllis, 1923-
- Ryan, Richard, d. 1837
- Ryan, Seán, Judge
- Ryan, Sr Mary Vincent, 1851-1898
- Ryan, Terence M., 1942-2003
- Ryan, Thaddeus R., fl. 1834
- Ryan, Thomas, 1929-
- Ryan, Thomas,1929-
- Ryan, Thomas, fl. 1814
- Ryan, Thomas, PP, 1858-1929
- Ryan, Thomas F., S.J., 1889-1971
- Ryan, Thomas Joseph (Tom), 1876–1921
- Ryan, Tom, 1890-1955
- Ryan, Tony, 1936-1997
- Ryan, Valentine, 1826-1894
- Ryan, Valentine, c.1826-1894
- Ryan, Valentine John Eustace, 1882-1947
- Ryan, Vincent, 1788-1845
- Ryan, William, d. 1838
- Ryan, William Abbot Charles, 1843-1873
- Ryan, William Patrick, 1867-1942
- Ryan family
- Ryan family (of New South Wales)
- Rycaut, Paul, Sir, 1628-1700
- Rycaut, Paul, Sir, 1629-1700
- Ryder, John, archbishop,
- Ryder, William, 1869?-1817
- Ryder family
- Rye, George, 1685-1735
- Ryland, Richard Hopkins, 1788-1866
- Rylands, Enriqueta Augustina, 1843-1908
- Rylands, John, 1801-1888
- Rynne, Andrew, fl. 1980-2000
- Rynne, Etienne, 1932-2012
- Rákóczi, Basil Ivan, 1908-1979
- Rícenn, Saint
- Rís, Éamann Iognáid, 1762-1844
- Sabat, Seán, 1928-1957
- Sabine, Edward, Sir, 1788-1883
- Sabran, Lewis, S.J., 1652-1732
- Sacco, Nicola, d.1927
- Sachellus
- Sacheverell, Henry
- Sackville, George, 1716–1785
- Sackville, Lionel, 1st duke of Dorset, lord lieutenant of Ireland, 1688–1765
- Sacrobosco, John, fl. 1240
- Sacrobosco, John de [John of Holywood], d. c.1236
- Sadb, daughter of Brian, d.1048
- Sadflier, Anne, 1820-1887
- Sadleir, Francis, 1775-1851
- Sadleir, George, 1814-1856
- Sadleir, John, 1814-1856
- Sadleir, Ralph, Reverend. 1815-1902
- Sadleir, Richard, 1794-1889
- Sadleir, Thomas, 1882-1957
- Sadler, James, 1753-1828
- Sadler, Michael Thomas, 1780-1835
- Sadler, Windham, 1796-1824
- Sadlier, Mary-Ann, 1820-1903
- Sadlier, Mary Anne, 1820-1903
- Sadlier, Thomas II, 1882-1957
- Sagrue, Michael 'Butty', 1924-1977
- Sailly, Charles de, fl. 1693
- Saint-Gaudens, Augustus, 1848-1907
- Saint-Germain Leduc, Pierre-Etienne-Denis, 1799-18?
- Saint-John, Henry, 1st viscount Bolingbroke, 1678-1751
- Saint-Ruth (Saint-Ruhe), Charles Chalmont c.1650–1691
- Saint Ailbe, Latin: Albeus, Welsh: Eilfyw or Eilfw, usually known in English as St Elvis, fl 500?
- Saint David (Welsh: Dewi Sant), c. 500 – c. 589
- Saint Edmund, king and martyr, d. 869
- Sainthill, Richard, 1787-1869
- Saint Lawrence of Brindisi, OFM Cap., 1559-1619, born Russo, Giulio Cesare
- Saint Manchan, -664
- Saint Maurus, (or Maur), 512-584
- Saint Mo Ling, 614-697
- Saklatvala, Shapurji, 1874–1936
- Salazar, Antonio de Olveira, 1889-1970
- Salin, Bernhard
- Salkeld, Blanaid, 1880–1959
- Salkeld, Cecil, 1904-1969
- Salkeld, Cecil ffrench, 1904-69
- Salkeld, Cecil Ffrench, 1904-69
- Sall, Andrew, 1613-1686
- Sall, Andrew, c.1620-1682
- Sall, Andrew FitzBennet, 1612-1686
- Sall, Andrew Fitzbennet, SJ, 1612-1686
- Sall, Andrew Fitzjohn, 1624-1682
- Sall, Andrew Fitzjohn, 1624–1682
- Sall, Andrew FitzJohn, SJ, 1624-1682
- Sall, Andrew Fitzjohn 1624–1682
- Sall family
- Salmon, George, 1819-1904
- Sampson, John, 1862-1931
- Sampson, Ralph Allen, 1866-1939
- Sampson, William, 1764-1836
- Sampson, William 1764-1836
- Samson, Saint, fl. 561/2
- Samthann, ingen Díaráin, d. 739
- Samthann ingen Díaráin, d. 739
- Samuel, Raphael Elkan, 1934-1996
- Sanborn, Melinde Lutz
- Sancho IV, c.1257-1295
- Sanctán, saint and bishop, c. 500
- Sandby, Paul, bap.1731, d.1809
- Sandby, Thomas, 1721 – 1798
- Sanders, Matthew, ? - 1549
- Sanderson, Agnes, 1874-
- Sanderson, John, 1819-1901
- Sanderson, William
- Sanderson family
- Sandes, Arthur, 1793-1832
- Sandes, Arthur, fl. 1819
- Sandes, Elizabeth Anne, 1851-1934
- Sandes, Flora, 1876-1956
- Sandes, George, 1821-1895
- Sandes-Yudenitch, 1876-1956
- Sandford, Fulk de, archbishop of Dublin, d. 1271
- Sandford, Henry Moore, 1751-1814
- Sandford family
- Sands, Bobby (Robert Gerard), 1954-1981
- Sands, Bobby (Robert Gerard) 1954-1981
- Sands, Bobby, 1954-1981
- Sands, Hugh, fl.1928-1981
- Sands, John Joe, fl.1958-1992
- Sands, Noel Christopher
- Sands, Peter, 1889-1915
- Sands, Robert ('Bobby'), 1954-1981
- Sandvik, Ole Mork, 1875-1976
- Sandvik, Ole Mørk, 1875-1976
- Sandwich, J. M., earl of, fl. 1738-9
- Sandys, Robert, fl.1671
- Sandys family
- Sankey, Henry Gore, fl. 1790s
- Sankey, Ira David, 1840-1908
- Sankey family
- Santa Claus
- Sargent family
- Sarsfield (Angel) family
- Sarsfield, Dominick, d. 1636, 1st Viscount Sarsfield of Kilmallock,
- Sarsfield, Dominick, d. 1701, 4th Viscount Sarsfield of Kilmallock
- Sarsfield, Edward, sixth viscount Kilmallock, 1693-
- Sarsfield, Guy Claude de, 1718-1789
- Sarsfield, Jenet, d.1598
- Sarsfield, Patrick, d. 1693
- Sarsfield, Patrick, earl of Lucan, d. 1693
- Sarsfield family
- Saul, John Hennessy, d.1897
- Saule family
- Saunders, James, fl. 1797
- Saunders family
- Saunderson, Edward James
- Saunderson, Edward James, 1837-1906
- Saunderson family
- Saurin, James, 1719-1772
- Saurin, James, 1720-1772
- Savage, E.B., fl.1882 - 1914
- Savage, Henry Joseph, 1875-1961
- Savage, Jim, d. 2005
- Savage, Joe, b.1913
- Savage, John, 1740-1826
- Savage, Marmion Wilme, d. 1872
- Savage, Martin, 1897-1919
- Savage, Minnie, 1908-2001
- Savage, Norah May, 1925-2011
- Savage, Rowland, d. 1866
- Savage, Sara Irvine, 1902-1995
- Savage family
- Savery, Henry, 1791-1842
- Saville, Mark Oliver, Baron Saville of Newdigate, 1936-
- Savonarola, Girolamo, 1452-1498
- Savory, Sir Douglas Lloyd, 1878-1969
- Saxelby, Emma (née Moffett), 1883-1946
- Saxton, Christopher, 1542x4-1610/11
- Sayers, Jack, d. 1990
- Sayers, John, R.N., c.1735-1825
- Sayers, Michael, 1911-2010
- Sayers, Máiréad "Peig"
- Sayers, Peig (‘Peig Mhór’), 1873–1958
- Sayers, Peig (‘Peig Mhór’), 1873–1958,
- Sayers, Peig, 1873-1958
- Sayers, Willielma Jane, 187?-1959
- Sayles, George Osborne, 1901/2-1994
- Scallan, Thomas, Rev., 1874-1956
- Scallan, Thomas, Revd, 1874-1956
- Scallon, Rosemary "Dana", 1951-
- Scallon, Rosemary, Dana, 1951-
- Scally, Barbara
- Scally, George, d.1952
- Scalé, Bernard, fl. 1760-1787
- Scanlan, John, d.1820
- Scanlan, Michael, 1836–1917
- Scanlan, Patrick F., fl. 1940
- Scanlen, William Alexander, fl. 1910-1954
- Scanlon family
- Scannell, James J., 1870-1939
- Scannell, James J. 1870-1939
- Scannell, Mary J.P. (Maura), 1924-2011
- Scarff, Robert, fl. 1841
- Scarry family
- Scharff, Robert Francis, 1858-1934
- Schatz, Erwin Bernhard, c.1876-1918
- Schauffler, Elsie Tough, 1885-1935
- Scheer, Reinhard, Admiral, 1863-1928
- Schiller, Friedrich, 1759-1805
- Schiller, Friedrich, 1759-1805,
- Schimek, Franz Xavier, c.1900-?
- Schmeltz, Stefan Otto, 1931-2013
- Schomberg, Frederick Herman de, 1st duke of Schomberg, 1615-1690
- Schorman, Sonia, d.2016
- Schottin (?Scuithin), saint ?6th century
- Schroetter, Hans V., 1891-1965
- Schrödinger, Erwin, 1887-1961
- Schrödinger, Erwin, 1887–1961
- Schulze, John George Frederick, 1763/64-1839
- Schutte, Anton
- Schwatschke, Franz, 1895-1987
- Scilley, William Robert, 1920-2003
- Scollan, John Joseph, 1876-1962
- Scorsesse, Martin, 1942-
- Scott, Anthony,
- Scott, Anthony, 1844-1919
- Scott, Charles Prestwich, 1846-1932
- Scott, Duncan Campbell, 1862-1947
- Scott, George, Rev., fl. 1816
- Scott, George, Revd, fl. 1816
- Scott, Jack, 1910-2000
- Scott, John, 1739-1798
- Scott, John, d. 2004
- Scott, Liam, 1935-
- Scott, Michael, 1905-1989
- Scott, Michael, Fr., b.1930s?
- Scott, Robert, d.pre-1913
- Scott, Robert Falcon, 1868-1912
- Scott, Sir Walter, 1st Baronet, 1771-1832
- Scott, Thomas Colville, fl. 1850-1860
- Scott, W. E. R., fl. 1914-1955
- Scott, Walter, 1771-1832
- Scott, Walter, Sir, 1771-1832
- Scott, Walter, Sir, 1771-1832 ; Small, John
- Scott, William
- Scott, William, 1913-1989
- Scott, William, c.1752-1822
- Scott, William Robert, 1868-1940
- Scottus, Marianus, 1028-1082
- Scottus, Sedulius
- Scottus, Sedulius, fl. 840
- Scotus, John, fl. 850
- Scotus, Marianus, d. 1088
- Scovell, Kathleen, c.1841-1868
- Scovell, Whitmore, d.1868
- Scriven, George, 1856-1931
- Scrope, George Poulett, 1797-1876
- Scully, Catherine, d. 1843
- Scully, Darby, fl. 1865
- Scully, Denys, 1773-1830
- Scully, James Wall, 1837-1918
- Scully, John, fl. 1927
- Scully, Reginald William, 1858-1935
- Scully, Sean, b. 1945
- Scully, Sean, fl. 1995
- Scully, William, fl. 1868
- Scully, William John, c.1877-1895
- Scully, William John, d. 1895
- Scully family
- Scurlock family
- Scurry, James, 1790-1828
- Sealy, Úna,
- Sealy-King, Charles, c.1860-1941
- Seaman, Marcella (née McCormick) fl. 1828-1855
- Searles, Annie, fl.1890-c.1940
- Searles, Edward, d.1922
- Searles, Henry, d.1919
- Searles, James, d.1915
- Seavel family
- Seaver, Richard, 1831-1863
- Sebald, W.G.
- Secchi, Pietro Angelo, 1818-1878
- Secundinus (Sechnall), d. c.447
- Secundius
- Secundius, Saint
- Sedulius Scottus (the Irishman) fl. mid 9th cent
- Sedulius Scottus (the Irishman) fl. mid 9th cent.
- Sedulius Scottus, fl. mid. 9th cent
- Sedulius Scottus, fl. mid 8th cent.
- Seeley, John Robert, Sir, 1834-1895
- Seery, Bryan, d.1846
- Segrave, Alderman Walter, 1546-1621
- Segrave, Henry O'Neal de Hane, Sir,1896-1930
- Seigne, Thomas, fl 1866
- Selbie, Colin M., 1890-1916
- Selden, John, 1584-1654
- Sellin, Kurt, fl. 1930-1948
- Sellin family
- Semple, George, c1700-1782
- Semple, John, 1763-1840
- Semple, John, 1801-1882
- Semple, John, c.1801-c.1873
- Semple, Patrick
- Semple, Patrick, 1932-
- Semple, Thomas, 1842-1874
- Semple, William, Colonel
- Sen, Eu Tong, 1877-1941
- Senan, bishop and saint, d. 560
- Senior, Nassau William, 1790-1864
- Sen Phatric, Senex Patricus
- Seoighe, Mainchín, 1920-2006
- Seoighe, Mainchín, 1921-2006
- Seoighe, Maolra
- Seoighe, Maolra (Joyce, Myles), d.1882
- Seosamh Ó Dálaigh 1909-1992
- Serafino, Vannutelli, Cardinal, 1834-1915
- Serafino, Vannutelli, Vincenzo, Cardinal, 1834-1915
- Seton-Williams, Marjory Veronica, 1910-1992
- Sex, Susan
- Sexten (Sexton, Sesnen), Edmund, Mayor of Limerick
- Sexten, Edmund, 1486-1555
- Sexten, Edmund, d. 1554
- Sexton, Edmund, d. 1554
- Sexton, Joseph
- Sexton, Peter, d.1734
- Sexton, Thomas, 1847-1932,
- Sexton family
- Seymour, Charles, 1759-1834
- Seymour, Edward, Sir, 1633-1708
- Seymour, St John Drelincourt (1880–1950)
- Seymour-Conway, Richard, 4th marquis of Hertford, d. 1870
- Seymour family
- Seymour family (of County Galway)
- Seynesi, Paolo S.J., 1624-1694
- Seáinín Tom Sheáin (Ó Dioráin, Seáinín Tom; Dirrane, John), 187?-1939
- Shackelton, Mary, 1758-1826
- Shackleton, Abraham, 1696-1771
- Shackleton, Abraham, 1696–1771 ; Shackleton, Richard, 1726–1792
- Shackleton, Betsy, 1783-1843
- Shackleton, Deborah, Margaret, Mary and Sarah
- Shackleton, Edward Arthur Alexander, baron Shakleton, 1911-
- Shackleton, Elizabeth, d. 1781
- Shackleton, Ernest Henry, Sir, 1874-1922
- Shackleton, Francis Richard, 1876-1941
- Shackleton, Frank
- Shackleton, Jane W.
- Shackleton, Jane W., d. 1909
- Shackleton, Lydia, 1828-1914
- Shackleton, Mary, d. 1826
- Shackleton, Richard, 1726-1792
- Shackleton, Richard John, 1916-2000
- Shackleton, Sir Ernest Henry, 1874–1922
- Shackleton family
- Shakespeare, William
- Shakespeare, William, 1564-1616
- Shakespeare, William 1564-1616
- Shanahan, Denis, 1830-1913
- Shanahan, Eileen
- Shanahan, Jane, 1891-1936
- Shanahan, Jeremiah, 1840-post 1911
- Shanahan, Joseph, 1871-1943
- Shane, Elizabeth, 1877-1951
- Shane, Francis, Sir, 1540-1614
- Shanik family
- Shanks, James, 1854-1912
- Shanley, John, fl. 1890
- Shannon, Thomas, 1880-1921
- Shannon, William V., 1927-1988
- Shannon family
- Sharkey, John, 1900-1959
- Sharkey, John, b.1900
- Sharkey, Seán
- Sharland, Robert, fl.1833
- Sharp, Anthony, 1643-1707
- Sharp, George, 1802-1877
- Sharp, Thomas
- Sharpe, Charles, 1780x1-1854
- Sharpe, James Anthony, 1946-
- Sharpe, Richard, 1954-2020
- Sharp family
- Sharvin, Jim
- Shatter, Alan, 1951-
- Shaw, Bob, fl. 1960-70
- Shaw, Charlotte Frances Payne-Townshend, 1857-1943
- Shaw, Eyre Massey, Sir, 1828-1908
- Shaw, Francis, scholar
- Shaw, Francis, SJ, 1907-1970
- Shaw, George Bernard, 1856-1950
- Shaw, Lucy Carr, 1853-1920
- Shaw, Patrick, 1874-1940
- Shaw, William, 1749-1831
- Shaw, William, Rev., 1749-1831
- Shaw, William Arthur, 1865-1943
- Shaw family
- Shea, Henry, 1767-1830
- Shea, Henry, fl. 1773-1799
- Shea, James, d. 1959
- Shea, John, bap. 1803-1858
- Shea, John, c.1873-1917
- Shea, Joseph, 1892-1917
- Shea, Michael, d. 194-?
- Shea, Michael, d.1843
- Shea, Patrick, 1897-1916
- Shea, Patrick, 1908-
- Shea, Patrick, d. 1848
- Shea, Richard, c.1896-1915
- Shea-Lawlor, John, 1798-1876
- Sheahan, Patrick, 1876-1905
- Sheahan, Thomas, d. 1836
- Sheal, Patt, fl. 1801
- Sheane family
- Sheares, Henry, 1753-1798
- Sheares, John, 1766-1798
- Sheares, Julia, fl. 1792-1798
- Shearman, Hugh, 1915-1999
- Shearman, John Francis, Father, 1831-1885
- Shearman, John Francis, Fr, 1831-1885
- Shee, James, 1660-1724
- Shee, James Carnegie
- Shee, Richard, d.1848
- Shee, Richard, Sir, c.1550?-1608
- Shee, Richard, Sir, d.1608
- Sheedy, Eugene, C.C.
- Sheedy, James, fl. 1800-1840
- Sheedy, Mike, 1932-1994
- Sheedy, Thomas, fl.1916-1939
- Shee family
- Sheehan, (Canon) Patrick Augustine, 1852-1913
- Sheehan, Bernard, 1800-1868
- Sheehan, Bernard Smith O'Brien, 1845-1926
- Sheehan, D. D. (Daniel Desmond), 1873-1948
- Sheehan, Daniel Desmond, 1873-1947
- Sheehan, Donal, b. 1963
- Sheehan, J. W., 1916-1942
- Sheehan, Jack, 1920-2003
- Sheehan, Michael (Míchéal Ó Síothcháin), 1870-1945
- Sheehan, Michael (Ó Síothcháin, Míchéal), 1870-1945
- Sheehan, Michael, archbishop, 1870-1945
- Sheehan, Michael, d. 1945
- Sheehan, Michael Joseph, 1894-1974
- Sheehan, Patrick Augustine (Canon),1852-1913
- Sheehan, Patrick Augustine (Canon), 1852-1913
- Sheehan, Patrick Augustine (Canon), 1852–1913
- Sheehan, Patrick Augustine, Canon, 1852-1913
- Sheehan, Patrick Augustine, cardinal, 1852-1913
- Sheehan, Robert Edward, 1862-c. 1896
- Sheehan, Thomas, fl.1834-1852
- Sheehan family
- Sheehy, Edmund
- Sheehy, Hanna (-Skeffington), Margaret (Culhane) , Mary (Kettle) and Kathleen (Cruise O'Brien)
- Sheehy, Jeanne, 1939-1999
- Sheehy, Kevin, 1948-
- Sheehy, Mary
- Sheehy, Nicholas, d. 1766
- Sheehy, Nicholas, d.1766
- Sheehy, William, d. 1860
- Sheehy-Skeffington, (Johanna) Hanna, 1877-1946
- Sheehy-Skeffington, Andrée, 1910-1998
- Sheehy-Skeffington, Francis, 1878-1916
- Sheehy-Skeffington, Hanna, 1877-1946
- Sheehy-Skeffington, Hanna, 1877-1946 ; O'Brennan, Kathleen ; O'Reilly, Leonora
- Sheehy-Skeffington, Hanna, 1877-1946 ; Sheehy-Skeffington, Owen, 1909-1970 ;
- Sheehy-Skeffington, Owen, 1909-1970
- Sheehy Skeffington family
- Sheen family (of Peru)
- Sheeran, James, fl. 1865
- Sheeran, James B., CSSR, c.1808-1881
- Sheeran, Patrick, 1943-2001
- Sheerin, Eugene, d. 1915
- Shefflin family
- Sheil, Edward, c. 1834-1869
- Sheil, John Barclay, fl. 1797
- Sheil, Leonard, b.1965
- Sheil, Mary Anne, fl. 1848
- Sheil, Richard Lalor, 1791-1851
- Sheil, Richard Lalor, 1795-1851
- Sheil, Simon, d.1889
- Sheils, James, b.1838
- Shekleton, Fredrick J. (Freddie), 1940-2016
- Shelby, Charlotte, 1877-1957
- Shelley, Mary Wollstonecraft, 1797-1851
- Shelley, Percy Bysshe, 1792-1822
- Shelley, Thomas Brendan, d.2011/12
- Shelley [née Godwin], Mary Wollstonecraft, 1797–1851
- Shelly, Alphonsus (Brigid), Sr, 1857-1917
- Shelly, Kate, -1912
- Shelly, Thomas, 1823-1905
- Shelwell-White family
- Shephard, Gordon Strachey, 1885-1918
- Shepherd, Samuel (1701/2-1785)
- Sheppard, Oliver, 1865-1941
- Sheppard, Oliver, 1865–1941
- Sheppard, Oliver, 1865–1941,
- Sheppard, William, 1842-1923
- Sheridan, Bartholomew, Canon, 1787-1862
- Sheridan, Bernard, c.1800-c.1896
- Sheridan, Betsy, 1758-1837
- Sheridan, Charles Francis, 1750-1806
- Sheridan, Jack, 1915-2000
- Sheridan, Jim, 1949-
- Sheridan, Margaret Burke, 1889-1958
- Sheridan, Martin, athlete, 1881-1918
- Sheridan, Peter, b. 1952
- Sheridan, Philip, 1831-
- Sheridan, Philip Henry, 1831-1888
- Sheridan, Richard Brinsley, 1751-1816
- Sheridan, Thomas, 1646-1712
- Sheridan, Thomas, 1687-1738
- Sheridan, Thomas, 1719-1788
- Sheridan, Thomas, fl. 1661-1702
- Sheridan family
- Sheridan Le Fanu, Joseph, 1814-1873
- Sherley, Thomas, Sir, 1564-1633x4
- Sherlock, Lorcan, 1874 – 1945
- Sherlock, Louis, 1771-
- Sherlock, Margaret (née Fagan), d.1639
- Sherlock, Paul, S. J., 1595-1646
- Sherlock, Robert Webb, c.1865-1937
- Sherlock, Thomas, fl.1852
- Sherlock family
- Sherman, William Tecumseh, 1820-1891
- Sherrard, Thomas, d. 1787
- Sherry, John Joseph, 1790-1864
- Sherwin, Frank, 1905-1981
- Sherwin, Sean, b. 1946
- Sherwood, George
- Sherwood, Rosina Emmet, fl. 1870-80
- Sherwood family
- Shiel, James, OFM, bishop, d. 1724
- Shield, William, c.1748/9-1829
- Shields, Arthur, 1896-1970
- Shields, Bernard Francis, 1884-
- Shields, Hugh Edwin, 1929-c.2008
- Shields, James, 1806-1879
- Shields, James H.
- Shields, Will (Fitzgerald, Barry), 1888-1961
- Shiels, George, 1881-1949
- Shiels, Joe, fl.1901-1973
- Shillington family
- Shine, Michael, 1928-
- Shinnick, Thomas, 1778-1814
- Shinnors, John, b. 1950
- Shipley, James, 1850-1926
- Shipley, William, 1714-1803
- Shirley, James, 1596?-1666
- Shirley, James, bap. 1596?, d. 1666
- Shirley family
- Shoal Lake 40 First Nation
- Shoemaker, Michael Myers, fl. 1908
- Short, Constance, b. 1944
- Short, Patrick, Rev., d. 1870
- Shortall, Margaret, fl. 1881-1906
- Shortall, Margaret, née Carrigan, fl.1870-1920
- Shortall, Patrick, 1924-2009
- Shortall family
- Shorten family
- Shorter, Dora Sigerson, 1866–1918
- Shortis, Francis Valentine Cuthbert, 1875-1941
- Shortis, Patrick, d. 1916
- Shortle family
- Shouldice, Frank, 1892-1974
- Shovell, Cloudesley, Sir, bap. 1650, d. 1707
- Shuldham, Molyneux, Lord c. 1717-1798
- Shumsky, Neil L
- Shute, Nevil, 1899-1960
- Siborne, William, 1797–1849
- Sibthorp, Christopher, Sir, d. 1632
- Siddon family
- Siddons, Sarah, 1755-1831
- Sidney, Henry, Sir
- Sidney, Henry, Sir, 1529-1586
- Sidney, Mary Dudley, d.1586
- Sidney, Philip, 3rd earl of Leicester, 1619-1698
- Sidney, Philip, Sir, 1554-1586
- Sidney, Philip, Sir, 1554-1586 ; Derricke, John, fl.1578
- Sidney, Sir Henry (1529-86)
- Sidney family
- Sidney family (of Penshurst Place)
- Siegfried, Rudolf Thomas, 1830-1863
- Sieyès, Emmanuel Joseph, Abbé 1748-1836
- Sigerson, George, 1836-1925
- Sigerson family
- Siggins, Brian M., 1933-2020
- Sigtrygg II Silkbeard Olafsson, King of Dublin, c970-1042
- Sigtryggr Silkiskegg
- Silke, John, 1926-2016
- Silke, John Joseph, 1884-1960
- Silke, John Joseph, Dean, 1926-2016
- Sillard, P.A., fl.1880-1901
- Sillery, family
- Silly, Captein, fl. 1862
- Silvain, Timothée
- Simmons, George Valentine, 1867-1936
- Simmons, James Stewart Alexander, 1933–2001
- Simmons family
- Simms, Anngret
- Simms, Anngret,
- Simms, Anngret, fl. 1970-2004
- Simms, Eileen Mary (née Goold-Verschoyle), fl.1920-1950
- Simms, George Otto, 1910-1991
- Simms, Herbert George, 1898-1948
- Simms, John Gerald, 1904-1979
- Simms, Katharine
- Simms, Robert (the Younger), 1801-1847
- Simms family
- Simnel, Lambert, d. p.1534
- Simnel, Lambert, fl. 1487-1525
- Simon, John Allsebrook, 1st viscount Simon, 1873-1954
- Simon de Montfort, c. 1208-1265
- Simonds, Justin Daniel, bishop, 1890-1967
- Simonds-Gooding, Maria, 1939-
- Simonds-Gooding, Maria, b. 1939
- Simon Semeonis
- Simpson, (Frederick) Vivian, 1903-1977
- Simpson, Adam Boyd
- Simpson, Derek Douglas Alexander, 1938-2005
- Simpson, Jonathan, Rev, 1817-
- Simpson, Jonathan, Revd, 1817-
- Simpson, Patrick, 1682-1779
- Simpson family
- Sinchell, founder and 1st abbot of Cell Achaid (Killeigh, Co. Offaly), d. 549
- Sinclair, Betty (Elizabeth), 1910-1981
- Sinclair, Betty (Elizabeth), 1910–1981
- Sinclair, Betty, 1910 - 1981
- Sinclair, Betty, d. 1981
- Sinclair, John Hamilton (Jack), 1879-1916
- Sinclair, Thomas
- Sinclair, Thomas, 1838-1914
- Sinclair family
- Singer, Paul
- Singer, Paul, 1911-1985
- Singleton, Henry, 1682-1759
- Singleton, Henry, 1682–1759
- Singleton, John
- Singleton, Patience (previously Fowke), 1756-1787
- Singleton, Timothy, d.1918
- Sinnot, Anthony, esq., fl.1801
- Sinnot, Pedro
- Sinnott, Edward, S. J., fl. 1834-1837
- Sinnott, Patrick
- Sinnott, Thomas David, 1893-1965
- Sinnott family
- Sinton, David Henry, 1850-1909
- Siraj ud-Daulah, Mîrzâ Muhammad, Nawab of Bengal, fl.1756-1757
- Sir John Davies ; Sir Maurice Eustace ; Sir Audley Mervyn
- Sirr, Henry Charles, d. 1841
- Sirr, Henry Charles, Major, 1764-1841
- Sitric (Sitriuc) Silkenbeard d. 1042
- Sitriuc Silkenbeard, c. 970-1042
- Size, Mary, 1883-1959
- Size, Mary, M.B.E., 1884-1959
- Sjoestedt, Marie-Louise, 1900-1940
- Skefffington family
- Skeffington, Clotworthy, 2nd earl of Massereene, 1742-1805
- Skeffington, Francis Sheehy-, 1878-1916 ; Skeffington, Hanna Sheehy-, 1877-1946
- Skeffington, Hanna Sheehy-, 1877-1946
- Skeffington, William, Sir, d. 1535
- Skelly family
- Skelton, Philip, 1707-87
- Skelton, Ross, b. 1941
- Skerrett family
- Skerry, John
- Skilling, Thomas, 1793-1865
- Skinnider, Margaret (Ní Scineadóra, Máighread), 1893-1971; O'Keeffe, Nora
- Skinnider, Margaret (Ní Scineadóra, Máighréad), 1893-1971
- Skinnider, Margaret (Ní Scineadóra, Máighréad), 1893–1971
- Skinnider, Margaret, 1893-1971
- Skipper, Nicholas, fl. 1587
- Skory (Scorrie, Scory), Edmond (Ned). d. 1632
- Skorzeny, Otto Johann Anton, 1908-1975
- Skrene, William, d. c.1420
- Slacke, Caroline Annette, fl.1880-1918
- Slacke, William, c.1740-1807
- Slade, Robert
- Slane, Philip de, d.1327
- Slater, Frederick,
- Slater, Samuel, 1790-1860
- Slattery, Michael, bishop, 1785-1857
- Slaughter, Stephen 1697–1765 : Hoadly, John, 1678-1746 (archbishop of Armagh)
- Sleator, James Sinton, 1885-1950
- Sleator, James Sinton, 1889-1987
- Slessor family
- Slevin (John) Gerard, 1919-1997
- Slevin, Nicholas, fl. 1817
- Sleyne, John Baptist, bishop of Cork, d. 1712
- Sleyne, John Baptist, d. 1712
- Sling, Henry, 1835-1909
- Slinger, Leslie, 1907-1974
- Slingsby, Francis, 1611-1642
- Sliocht Lachlainn Maguire
- Sloan, Thomas Henry
- Sloane, Hans, 1660-1753
- Sloane, Hans, Sir, 1660-1753
- Sloane, Hans, Sir, 1660–1753
- Sloane, John, fl. 1878
- Sloane, John Swan, c.1823?-1886
- Sloane, Sir Hans, 1st Baronet, PRS, 1660-1753
- Sluis, Piet, 1930-2008
- Sly, Lucinda, c.1777-1835
- Sly, Lucinda, d. 1835
- Small, Tony, d.1804
- Smart, Christopher, 1722-1771
- Smedley, Jonathan, 1671-1729
- Smethurst, John Blears, 1934-2010
- Smiddy, Richard Canon, 1811-1878
- Smiddy, T.A., fl. 1924
- Smiddy, T. A., Professor, 1875-1962
- Smiddy, Timothy Aloysius, 1875-1962
- Smiddy, Timothy Aloysius, 1875–1962
- Smiddy, Timothy Anthony, 1875-1962
- Smiles, Samuel, 1812-1904
- Smith, -, Abbot, O.S.B., 1812-1892
- Smith, Adam, 1723-1790
- Smith, Agnes, 1843-1926
- Smith, Amanda 1837-1915
- Smith, Aquilla
- Smith, Bernard, fl. 1694
- Smith, Blaise, b.1967
- Smith, Cecil Blanche Woodham-, 1896-1977
- Smith, Cecil Blanche Woodham- [née Cecil Blanche FitzGerald], 1896–1977
- Smith, Charles, c.1715-1762
- Smith, Charles, c.1715–1762
- Smith, Charlotte, 1749-1806
- Smith, David Thomas
- Smith, Des, 1925-2002
- Smith, Edward, Captein, fl.1730-1738
- Smith, Edward, fl.1799-1849
- Smith, Elizabeth, née Grant, 1797-1885
- Smith, Elizabeth Thomasina Meade (L. T. Meade, pseud.), 1844-1914
- Smith, Erasmus, 1611-1691
- Smith, Francis, c.1788-1854
- Smith, Frederick Edwin, 1st earl of Birkenhead, 1872-1930
- Smith, Goldwin, 1823-1910
- Smith, Henry John Stephen, 1826-1883
- Smith, Herbert Leuther, d. 1869
- Smith, Iain Crichton, 1928-1998
- Smith, James, fl. 1733
- Smith, Jim, 1901-1970
- Smith, Jimmie, b.1923
- Smith, John, 1938-1994
- Smith, John Chaloner, 1870-1932
- Smith, John Noel, b. 1952
- Smith, John Noel, b.1952
- Smith, John Shaw, 1811-1873
- Smith, Jonathan Richardson, 1807-1874
- Smith, Joseph, 1856 - 1907
- Smith, Margot (Margaret Sarah), 1922-2009
- Smith, Olive (Mabel), 1906-1993
- Smith, Owen, fl.1886
- Smith, Paddy, 1901-1982
- Smith, Peter, fl. 1870s
- Smith, Philip, V.C., 1829-1906
- Smith, R. Travers
- Smith, Robert, d. 1883
- Smith, Sidney, 1912-1982
- Smith, Stephen Catterson, 1806-1872
- Smith, Thomas, 1808-
- Smith, Thomas, fl.1890-1910
- Smith, Thomas, Sir, 1513-1577
- Smith, William, 1698-1741
- Smith, William, 1854-1914
- Smith, William, 1859-1901
- Smith, William, d.1839
- Smith, William, fl. 1642-76
- Smith, William Augustus, Sir, d. 1831
- Smith, William Clifford, 1881/2-1954
- Smith, William Robertson, 1846-1894
- Smith, William Somerville, d.1912
- Smith-Barry, Arthur Hugh, 1st baron of Barrymore, d. 1925
- Smith-Barry, John, 1793-1837
- Smith-Barry, Robert Raynard, d. 1949
- Smith-Barry family
- Smith Barry, Arthur Hugh, 1843-1925
- Smithers, Bridget
- Smith family
- Smith Family
- Smithson, Annie, 1873-1948
- Smithson, Annie M(ary) P(atricia), 1873–1948
- Smithson, Harriet, 1800-1854
- Smithson, Hugh, duke of Northumberland, 1715-1786
- Smithwick, Paul Benedict, 1945-2022
- Smithwick, Peter Alexander, 1937-2022
- Smithwick, Standish, 1878-1958
- Smollett, Tobias George, 1721-1771
- Smout, Thomas Christopher
- Smuts, Jan, 1870-1950
- Smuts, Jan Christian, 1870-1950
- Smyllie, R(obert) M(aire), 1893-1954
- Smyllie, Robert, 1894-1954
- Smyllie, Robert Maire, 1893–1954
- Smyly, Ellen, 1814–1901
- Smyth, Alfred P., 1942-
- Smyth, Alfred P., 1942-2016
- Smyth, Brendan, 1927-1997
- Smyth, Clement, Bishop, 1810-1865
- Smyth, Edward, 1744?-1825
- Smyth, Edward, 1745-1812
- Smyth, Edward, 1749-1812
- Smyth, Edward, d. 1823
- Smyth, Edward, M.P., 1705-1788
- Smyth, Francis, Father, fl. 1820-1849
- Smyth, Francis, Fr, fl. 1820-1849
- Smyth, Jimmy
- Smyth, John, 1791-1858
- Smyth, John, Revd, 1872-1919
- Smyth, Joseph, fl. 1807
- Smyth, Malachy, 1919-
- Smyth, Mattie, 1914-
- Smyth, Patrick, 1867-1919
- Smyth, Robert, fl. 1207
- Smyth, Thomas, 1740-1785
- Smyth, William, fl. 1630-46
- Smyth, William Hamilton, 1775-1843
- Smyth, William J., 1944-
- Smythe-Wood, fl. 1967-1977
- Smyth family
- Snell, K. D. M.
- Sneyd, Ralph, 1863-1949
- Snorri Sturluson, 1179-1241
- Snow, Carmel, 1890-1961
- Soane, John, Sir, 1753-1837
- Sobieski, Jan III, King of Poland, 1629-1696
- Sobieski, Maria Clementina, Princess, 1702-1735
- Solly, D.
- Solly-Flood (née Connellan), Marguerite, 1884-1955
- Solly-Flood, Edward J. P., fl. 1890
- Solnit, Rebecca
- Solomons, Estella F., 1882-1968
- Solomons, Estella Frances, 1882-1968
- Solomon secind-sight (pseud.), fl.1811
- Somerled, d.1174
- Somers, James, V.C., 1894-1918
- Somers, Jimmy
- Somerset, Edward, 6th earl and 2nd marquis of Worcester and titular earl of Glamorgan, 1601-1667
- Somerville, Alexander, 1811-1885
- Somerville, Desmond Henry Sykes, 1889-1977
- Somerville, E.E., 1858-1949
- Somerville, E.Œ. (Edith Anna Oenone), 1858-1949
- Somerville, Edith 1858-1949
- Somerville, Edith Anna OEnone, 1858-1949
- Somerville, Edith Anna Œnone, 1858-1949
- Somerville, Edith Anna Œnone, 1858-1949 ; Martin, Violet Florence, 1862-1915
- Somerville, Edith Anna Œnone, 1858-1949)
- Somerville, Edith Anna Œnone, 1858–1949
- Somerville, Henry, fl. 1867
- Somerville, Henry Boyle Townshend, 1863–1936
- Somerville, Holly
- Somerville, Marcus, Sir, fl. 1831
- Somerville-Large, Peter
- Somerville Family
- Somerville family
- Somerville [née Fairfax; other married name Greig], Mary, 1780–1872
- Somerwell, William, fl. 1457
- Sommerfelt, Alf, 1890–1965
- Sondheim, Stephen
- Sopater
- Souter, Camille, 1929-
- Souter, Camille, b.1929
- South, Seán, 1928-1957
- South, Seán, b. c 1930, d. 1957
- South, William
- Southern, Rowland, 1882-1935
- Southwell, Edward, d. 1750
- Southwell, James, 1641-1729
- Southwell, Robert, Sir, 1635-1702
- Southwell, Robert, Sir 1635-1702
- Southwell family
- Soyer, Alexis Benoît, 1810-1858
- Spaight, Francis, fl. 1847
- Spaight, Richard D. (d. 1802)
- Spaight, William F., fl.1920-1921
- Spain, Alex W., 1897-1988
- Spark, John
- Sparrow, Edward, 1810-post-1870
- Sparrow, Samuel, d. 1838
- Sparrow family
- Speed, John, 1552-1629
- Speed, John, 1552?-1629
- Speller, Ian
- Spellman, Francis Joseph, archbishop and cardinal, 1899-1967
- Spence, Arthur William, 1864-1928
- Spence, Augustus 'Gusty', 1933-2011
- Spence, Clark C.
- Spence, Gusty
- Spence, Joseph, 1699-1768
- Spence, Sandy, MBE, 1923-
- Spence, Thomas Henry, d.1937
- Spence, William, 1837-1907
- Spence, William, 1837-1928
- Spencer, Charles, 3rd earl of Sunderland, 1674x5-1722
- Spencer, Edmund, 1711-1790 ; Price, Andrew ; Price, Alice
- Spencer, Ignatius of St Paul, 1799-1864
- Spencer, John Poyntz, 5th earl Spencer, 1835-1910
- Spencer, John Poyntz, 5th Earl Spencer, 1835–1910
- Spencer-Churchill, Frances Anne , Duchess of Marlborough, 1822-1899)
- Spencer-Churchill, Winston Leonard, 1874-1965
- Spender, Wilfrid, Sir, 1876-1960
- Spender Wite, Lilian,
- Spenser, Edmund, 1552-1599
- Spenser, Edmund, 1552-1599 ; Derricke, John, fl. 1578
- Spenser, Edmund, 1552?-1599
- Spenser, Edmund, 1552?–1599
- Spenser, Edmund,1552?–1599
- Spenser, Edmund, 1552–1599
- Spert, Richard, fl. 1580
- Spicer, John, c.1853-1922
- Spicer family
- Spillane, Michael
- Spilsbury family
- Spinelli, Ottaviano, bishop, d. 1513
- Spinks family
- Spinoza, Baruch, 1632-1677
- Spinoza, Benedictus de, 1632-1677
- Splaine, Robert, 1820-1891
- Spollen, James, fl. c.1816-1857
- Spotswood [Spottiswood], Alexander, 1676–1740
- Spratt, Devereux, Rev.
- Spratt, Devereux, Revd.
- Spratt, Devereux, Revd., fl.1630-1650
- Spratt, John, 1796-1871
- Spring, Daniel, 1910–88
- Spring, Dick, 1950-
- Spring-Rice, Thomas, 1st baron Monteagle, 1790-1866
- Spring-Rice family
- Sprott, William, 1840-1918
- Sproule, Dáithí 1950-
- Sproule, Samuel, c.1745-1820
- Spruce, Richard, 1817-1893
- Spry [née Fletcher], Constance, 1886–1960
- Spurgeon, Charles Haddon, 1834-1892
- Squibb, Elizabeth, fl. 1720
- Srephens, Jane, 1879-1959
- St. Bede the Venerable, c.672-735
- St. Eithne, styled "of the golden hair"
- St. George, Christopher, 1754-
- St. George, Henry Lucas, c.1782-1872
- St. George family
- St. John, John of, d, c.1253
- St. John, Oliver, d. 1630
- St. John Paul II, 1920-2005
- St. Lawrence family
- St. Ledger, John Lindley, fl. 1798
- St. Leger, Anthony, Sir, 1496-1559
- St. Leger, Hayes, 4th Viscount Doneraile, 1818-1887
- St. Leger, John Lindley, 1766-
- St. Leger, Ursula Emily Clare, Lady Castletown, 1853-1927
- St. Leger, Warham, Sir, 1525?-1597
- St. Leger family
- Stack, Augustine Mary Moore, 1879-1929
- Stack, Austin, 1879-1929
- Stack, Maurice, d. 1600
- Stacpoole, Henry de Vere, 1863-1951
- Stafford, Alexius, d. 1691
- Stafford, John, d. 1781
- Stafford, John, d.2005
- Stafford, Mon, fl. 1785-1825
- Stafford family
- Stahl, John Malcolm, 1886-1950
- Staines, Michael Joseph, 1885-1955
- Stalker, John, 1939-
- Stallard, Edwin, d.2012
- Stalley, Roger (Andrew), 1945-
- Stamer, Harriet Elizabeth, duchess of Rovigo, 1816-1875
- Standfield, John
- Standfield, Thomas
- Standún, Pádraig, 1946-
- Stanfield, James Field, 1749-1824
- Stanford, Charles Villiers, Sir, 1852-1924
- Stanford, William Bedell, fl. 1980
- Stanhope, Charles, 3rd earl of Harrington, 1753-1829
- Stanhope, Edward, Sir, fl. 1631
- Stanhope, Geraldine Evelyn, 6th Countess of Milltown, d.1914
- Stanhope, James, 1st earl Stanhope, 1673-1721
- Stanhope, Philip Dormer, 4th earl of Chesterfield, 1694-1773
- Stanihurst, James, 1522-1573
- Stanihurst, Richard, 1547-1618
- Stanley, Edward George Villiers, 17th earl of Derby, 1865-1948
- Stanley, Edward Henry, 15th earl of Derby, 1826-1893
- Stanley, Edward John, 1850-1935
- Stanley, Gerald
- Stanley, Joseph Michael, 1889-1950
- Stanley family
- Stanlis, Peter James, 1920-
- Stanmere, Margaret, fl.1401
- Stannard, Eaton, d. 1757
- Stanton, Jack, 1899-1979
- Stanton, Noel (Bob), c. 1928-2008
- Stanton, Robert, 1886-1915
- Staples, Edward, c.1490-c.1558
- Stapleton, 1777-1841
- Stapleton, Catherine (Kitty), fl.1828
- Stapleton, James, fl.1828
- Stapleton, Michael
- Stapleton, Michael, c.1741–1801
- Stapleton, Theobald, c.1589-1647
- Stapleton, Theobald, c.1589–1647
- Stapleton family
- Star family
- Starkey, James, 1879-1958
- Starkey, James Sullivan (Seumas O'Sullivan), 1879-1958
- Starkey, James Sullivan (Seumas O'Sullivan) 1879-1958
- Starkie, Edith Mary, 1897-1970
- Starkie, Edyth, 1867-1941
- Starkie, Enid Mary, 1897-1970
- Starkie, Walter, 1894-1976
- Starkie, Walter, 1894–1976
- Starkie, Walter Fizwilliam, 1894-1976
- Starkie, William, 1860-1920
- Starr, Ellen Gates, 1859-1940
- Starr, John, fl. 1673-1747
- Starrat, William, d. c.1769
- Starr family
- Staunton, Carmel, Sister, fl.1944-1986
- Staunton, George Leonard ; Staunton, George Thomas ; Stanton (Staunton) family
- Staunton, Jack, fl. 1921
- Staunton, Myles,1935-2011
- Staunton, Pat, b. c.1943
- Staunton, Seán, 1942-1914
- Staunton family
- Stavely, William, 1743-1825
- Stawell, William Foster, Sir, 1815-1889
- Stawell family
- St Clair, William
- Stead, W,T. (William Thomas), 1849–1912
- Stearne (Sterne), John, 1624–1669
- Stearne (Sterne), John, bishop, 1660-1745
- Stecker, Anny, d.2000
- Steele, Elizabeth, 1902-2006
- Steele, John Haughton, d. 1920
- Steele, Norman, 1753-1801
- Steele, Richard, Sir, 1672-1729
- Steele, Thomas, 1788-1848
- Steele, Tom, fl. 1814-1847
- Steele, Walter, d. 1826
- Steele, William, 1610-1680
- Steel family
- Steen, Trevor Thomas, 1954-
- Steevens, Griselda (Grizell), 1653 – 1746
- Steevens, Grizel, 1654-1747
- Steevens, Richard, c.1654-1710
- Stein, Amelia, b. 1958
- Stein, John Jr, 1745-1825 ; Stein family ; Haig family ; Jameson family
- Steinberger, Valentine, fl. 1916
- Steiner, Herbert, 1923-2001
- Steiner, John, 1832-1919
- Steiner, John Joseph, c.1834-1916
- Steiner-Scott, Geoff,
- Stein family
- Steinhuber, Andreas, Cardinal, S.J., 1824-1907
- Stelfox (née Mitchell), Margarita Dawson, 1886-1971
- Stelfox, Arthur Wilson, 1883-1972
- Stem family
- Stephen, James, 1759-1832
- Stephen, James Fitzjames, Sir, 1829-1894
- Stephen, king, 1097?-1154
- Stephen, Leslie, Sir, 1832-1904
- Stephen, Rosamond, fl. 1914-1918
- Stephen de Exeter
- Stephen Harding, Saint, d. 1134
- Stephen of Hungary, saint, 975-1038
- Stephens, Frank
- Stephens, James (Tom), 1809-1886
- Stephens, James (Tom), 1825-1901
- Stephens, James, 1809-1886
- Stephens, James, 1824-1901
- Stephens, James, 1825-1901
- Stephens, James, 1825–1901
- Stephens, James, 1880-1950
- Stephens, James, 1880?-1950
- Stephens, James, 1880?–1950
- Stephens, Jane, fl.1880-1916
- Stephens, Mandy, 1970-2016
- Stephens, Susan (née Daly)
- Stephens, Thomas, 1821-1875
- Stephens, William, 1696-1761
- Stephens, William, c.1812-1852
- Stephenson, David, b. 1955
- Stephenson family
- Stepinac, Aloysius, Archbishop, 1898-1960
- Sterling, Edward, Rector of the Union of Lurgan, 1706-1762
- Stern, James, 1904-1993
- Stern, Ludwig Christian, 1846-1911
- Sterne, Laurence, 1713-1768
- Steuart, John Alexander, 1861-1932
- Stevens, Dominic
- Stevens, John, d. 1726
- Stevens, Wallace, 1879-1955
- Stevenson, Adlai E., fl. 1962
- Stevenson, Burton Egbert, 1872-
- Stevenson, James, d. 1956
- Stevenson, John1762-1833
- Stevenson, John Andrew, 1761-1833
- Stevenson, Robert, 1772-1850
- Stevenson, Robert Louis, 1850-1894
- Stevenson family
- Stevick, Robert David, d.2018
- Steward, Thomas, fl. 1719
- Stewart (Stuart), Sir William, d. 1647
- Stewart,, Robert, Sir, d. c 1670
- Stewart, A.T. Q. (Anthony Terence Quincey), 1929-2010
- Stewart, Adam Allison,
- Stewart, Alexander, 1699/1700–1781
- Stewart, Andrew
- Stewart, Anthony Terence Quincey, 1929-
- Stewart, Archibald, fl. 1738-1758
- Stewart, Charles, 1778-1869
- Stewart, Charles Moone, 1799-
- Stewart, Charles Stewart Vane-Tempest
- Stewart, Charles Tudor, b. c. 1818
- Stewart, Frederick William Robert, 4th marquess of Londonderry, 1806-1872
- Stewart, George Vesey, 1832-1920
- Stewart, Hazel
- Stewart, Helen, 1911-1986
- Stewart, Henry Hutchinson, 1798-1879
- Stewart, James, Sir, 1744-1839
- Stewart, James Robert, fl.1840-1849
- Stewart, James Robert, fl. 1940s
- Stewart, John James, 1897-1966
- Stewart, John Watson, fl. 1798
- Stewart, Mairi, 1921-2009
- Stewart, Margaret, 1910-1966
- Stewart, Margaret : Nairn, Ian : Brady, Conor
- Stewart, Margaret Alice, 1895- ; Stewart, William Morrison, 1886-1916
- Stewart, Robert, 1749-1797
- Stewart, Robert, 1769-1822
- Stewart, Robert, 1783-1852
- Stewart, Robert, viscount Castlereagh, 1759-1822
- Stewart, Robert Prescott, 1825-1894
- Stewart, Robert Warren, Revd., 1850-1895
- Stewart, Samuel Alexander, 1826-1910
- Stewart, Samuel Milliken, 1865-1954
- Stewart, Theresa, Marchioness of Londonderry, 1852-1919
- Stewart, William, Captain, 1775-1873
- Stewart, William, Sir, d. 1662
- Stewart family
- Stewart family, marquises of Londonderry
- Stewart [afterwards Vane], Charles William, 3rd marquess of Londonderry, 1778–1854
- Stewart [afterwards Vane], Charles William, 3rd marquess of Londonderry, 1778–1854,
- Stewart [afterwards Vane], Charles William, 1778-1854, 3rd marquess of Londonderry,
- Steyn, Stella, 1907-1987
- St Feargal of Salzburg, 700-784
- St George, Richard Mansergh, c.1750-1798
- St George, Richard St George Mansergh, c.1752-1798
- St George family
- Stieber, John, 1926-
- Stieber, Karl, fl. 1926-?
- Stieglitz, Jan, d.1977
- Stine, Nora O'Connor, fl. 1906
- Stirling, James Lyle, 1858-1930
- Stirling family
- St John, Oliver, Viscount Grandison, 1559–1630
- St John the Evangelist
- St Lawrence, Christopher
- St Lawrence, Christopher (d. 1589), 7th Baron Howth
- St Lawrence, Christopher, 7th baron Howth, c.1510-1589
- St Lawrence, Christopher, d. 1589, 7th Baron Howth
- St Lawrence, Christopher, Sir, d. 1619
- St Lawrence family
- St Leger, Anthony, Sir
- St Leger, Anthony, Sir, 1496?–1559
- St Leger, Emily Ursula Clare, Lady Castletown, 1853-1927
- St Leger, Hayes, 3rd Viscount Doneraile, 1786-1854
- St Leger, Noblett, fl.1845-1852
- St Leger, William, Sir, c.1580–1642
- St Leger family
- St Maedóg (St Aidan)
- Stock, Frederick, d. 1886
- Stock, Joseph, 1714-1813
- Stock, Joseph, bishop, 1740-1813
- Stock, Joseph ., d. 1813
- Stock family
- Stockley, William Frederick Paul, 1859-1943
- Stockwell, Marilyn, fl.1973-2014
- Stodart, Holden, 1882-1916
- Stoddard, F. G.
- Stoker, Abraham 'Bram', 1847-1912
- Stoker, Abraham ('Bram'), 1847-1912
- Stoker, Abraham (Bram), 1847-1912
- Stoker, Abraham (‘Bram’) (1847–1912)
- Stoker, Abraham (‘Bram’), 1847-1912
- Stoker, Abraham, 'Bram', 1847-1912
- Stoker, Bram (Abraham), 1847-1912
- Stoker, Bram, 1847-1912
- Stoker, Charlotte Matilda Blake (née Thornley), 1818-1901
- Stokes (Stóice, de Stóice), Diarmuid c.1884-1910
- Stokes, Charles, d. 1895
- Stokes, Diarmuid, c.1884-1910
- Stokes, Dorothy, 1898-1982
- Stokes, George, 1800-1882
- Stokes, George Gabriel, 1819-1903
- Stokes, George Gabriel, Sir, 1819-1903
- Stokes, George T., 1843-1898
- Stokes, John, fl.1834
- Stokes, John Day, 1803-1862
- Stokes, John Edward, 1838-1914
- Stokes, Margaret M'Nair, 1832-1900
- Stokes, Margaret McNair, 1832-1900
- Stokes, Marianne (née Preindlsberger), 1855-1927
- Stokes, Niall
- Stokes, Stephen, 1802-1900
- Stokes, Whitley, 1763-1845
- Stokes, Whitley,1830-1909
- Stokes, Whitley, 1830-1909
- Stokes family
- Stone, George, archbishop of Armagh, 1708–1764
- Stone Family
- Stoney, Bindon Blood, 1828-1909
- Stoney, George Johnstone, 1826-1911
- Stoney, [Walter] Charles Butler 1846-1919
- Stopes, Marie Charlotte Carmichael, 1880-1958
- Stopford, Charlotte, Lady
- Stopford, Edward Adderley, 1810-1874
- Stopford, Robert Lowe, 1813--1898
- Stopford-Sackville, Caroline Harriet Sackville Germain, d. 1908.
- Stopford family
- Stopford Price, Dorothy, 1890-1954
- Storace, Stephen, d. 1796
- Storey, Edward, 1835-
- Story, George Warter, 1664?-1721
- Story, Thomas, 1670?-1742
- St Patrick
- Strachan, J.A., fl.1891
- Strachey, Giles Lytton, 1880-1932
- Strand, Paul, 1890-1976
- Strange, Richard, 1733-1816
- Strangman, Mary, 1872-1943
- Strangman, Mary, d. 1943
- Stratford, Edward Augustus, 2nd earl of Aldborough, 1736-1801
- Stratford family, earls of Aldborough
- Stratton, Charles Sherwood ('General' Tom Thumb), 1838/9-1883
- Stratton, Eugene, 1861-1918
- Strawbridge, Robert, 1732-1781
- Strawbridge, Robert, fl. 1774
- Street, George Edmund, 1824-1881
- Strickland, Charles
- Strickland, Edward Peter, General Sir, 1869-1951
- Strickland, Peter, Sir, 1869-1951
- Stringer, Frank, fl. 1940-1949
- Stritch, John, 1616-1681
- Stritch, Samuel, Cardinal, 1887-1958
- Strong(e), Thomas, bishop, d.1602
- Strong, L. A. G., 1896-1958
- Strong, Leonard Alfred George, 1896-1958
- Strong, Roy C.
- Stronge, James Matthew, Sir, 1786-1864
- Stronge family
- Strutt, Charles Edward, 1814-1897
- Strype, John, 1643-1737
- Strzelecki, Pawel Edmund de, sir, 1797-1873
- Strzelecki, Pawel Edmund de, Sir, 1797-1873
- Stuart, Caroline, Lady, 1750-1813
- Stuart, Charles, O.S.A., 1797-1853
- Stuart, Charles Edward, 1720 – 1788 ("Bonnie Prince Charlie")
- Stuart, Charles Edward, Prince, 1720-1788
- Stuart, Charles Edward Louis Philip Casimir, (the Young Pretender, Bonnie Prince Charlie), 1720-1788
- Stuart, Francis, 1902-2000
- Stuart, Gilbert, 1755-1828
- Stuart, Henry Benedict, Cardinal Duke of York, 1725-1807
- Stuart, Henry Francis Montgomery, 1902-2000
- Stuart, Henry Villiers, 1803-1874
- Stuart, Henry Windsor Villiers, 1827–1895
- Stuart, house of
- Stuart, Imogen, 1927-
- Stuart, Imogen, b. 1927
- Stuart, Imogen, b.1927
- Stuart, James Francis Edward [styled James VIII and III], 1688-1766
- Stuart, Jane (née Shee, later Jackson and later Molony), 1764/5-1839
- Stuart, Maurus, 1664-1720
- Stuart family
- Stuart family, earls Castle Stewart
- Stubbs, George, 1724-1806
- Studdert, Patrick, d.1919
- Studdert family
- Stukeley (Stucley), Thomas, Captain, c.1525–1578
- Stukeley, Thomas, 1525?-1578
- Sturgeon family.
- Sturluson, Snorri see Snorri Sturluson, 1179-1241
- Stócs, Diarmuid, c.1880- 1910
- Suckling, Nigel, b. 1950
- Suerbeer, Albrecht, bishop, 1272-1273
- Sugden, Edward Burtenshaw, Baron St Leonards, 1781-1875
- Sugden, Mark, fl. 1920
- Suibhne mac Colmain (Suibhne Gelt)
- Suibhne mac Colmain, king of the Dál nAraidi
- Suilen, bishop, d. 1091
- Sulien, bishop, c.1012-1091
- Sullivam, James P.
- Sullivan, Alexander Martin, 1829-1884
- Sullivan, Alexander Martin, 1830-1884
- Sullivan, Alexander Martin, 1830–1884
- Sullivan, Alexander Martin, d. 1959
- Sullivan, Arthur, Sir, 1842-1900
- Sullivan, Arthur Seymour, Sir, 1842-1900
- Sullivan, Christopher, 1926-1998
- Sullivan, Edward, Sir, 1852-1928
- Sullivan, Francis Stoughton, 1715-1766
- Sullivan, James
- Sullivan, James "Yankee", fl. 1849
- Sullivan, James Mark, fl.1915-1922
- Sullivan, James P.
- Sullivan, Jim, fl. 1913
- Sullivan, John, 1740-1795
- Sullivan, John, Blessed, 1861-1933
- Sullivan, John, S.J., 1861 - 1933
- Sullivan, John, S. J., 1861-1933
- Sullivan, John L., 1858-1918
- Sullivan, John L. 1858-1918
- Sullivan, Mary, 1835-1852
- Sullivan, Michael, fl. 1862-1878
- Sullivan, Owen, fl.1883-1916
- Sullivan, Richard Joseph, d. 1806
- Sullivan, Sheila
- Sullivan, William K., d. 1890
- Sullivan, William Kirby, c.1821-1890
- Sullivan family
- Sullivan Rabach, Cornelius
- Sulpicius Severus, c.360-c.420/25
- Sulpicius Severus, c.363-c.420
- Summerson, John Newenham, Sir, 1904-1992
- Sunniva, fl 10th century
- Sunniva, Saint
- Sunniva, Saint, 10th century
- Suppiger, Joseph E.
- Supple family
- Susanna, Marchioness of Waterford, 1784-1827
- Sussex, Thomas Radcliffe, earl of
- Sutcliffe, Liam, -2017
- Sutherland, Duke of
- Sutherland, Halliday Gibson, 1882-1960
- Sutherland, John, 1755?-1826
- Sutherland family
- Sutton, Ambrose, fl. 1788
- Sutton, Ivan, 1954-
- Sutton, Patrick Prendergast, d. 1901
- Sutton, Thomas, comte de Clonard, d. 1782
- Sutton family
- Suzuki, Masako, 1878-1965
- Suárez Butler family
- Svevo, Italo (Schmitz, Aron Ettore), 1861-1928
- Swain, Jeremy
- Swan, Harry Percival, 1879-1970
- Swan, Leo, 1930-2001
- Swan, Robert Lafayette, 1843-1916
- Swan, Ruth
- Swan family
- Swanston, William, 1841-1932
- Swanton, Robert, 1764-1840
- Swanton, Thomas
- Swanton, Thomas, 1810-c1865
- Swanzy, Henry, 1666-1742
- Swanzy, Oswald Ross, 1881-1920
- Swanzy family
- Swanzy family (of County Cavan)
- Swayne, John, archbishop, d. 1442
- Swayne, John, d. 1442
- Swayne, Richard, d.1798
- Sweeney, Alfred E., fl.1938-1967
- Sweeney, Alphonsas J., 1900-1984
- Sweeney, Bill, 1897-1979
- Sweeney, Ciarán, b. 1971
- Sweeney, Garry, 1923-1998
- Sweeney, Hilda, 1911-2005
- Sweeney, John (1921-1993)
- Sweeney, John Lincoln, 1906-1986
- Sweeney, Lawrence, 1901-1922
- Sweeney, Manus, d. 1799
- Sweeney, Manus, Fr, fl. 1798
- Sweeney, Manus, Revd, 1763-1799
- Sweeney, Manus, Revd., 1763-1799
- Sweeney, Patrick, d.1995
- Sweeney, Thomas W., 1820-1892
- Sweeney family
- Sweeny, Thomas William, 1820-1892
- Sweeny, Thomas William, d. 1892
- Sweeny family
- Sweetman, David, 1938-
- Sweetman, Eric, fl. 1918-1957
- Sweetman, family
- Sweetman, Joan, 1909-2007
- Sweetman, John
- Sweetman, John, 1751/2–1826
- Sweetman, John, 1752-1826
- Sweetman, John, 1844-1936
- Sweetman, Michael J., 1914-1996
- Sweetman, Michael John, 1935–1972
- Sweetman, Milo, bishop, d. 1380
- Sweetman, Nicholas, bishop, d. 1786
- Sweetman, Patrick, 1803-1885
- Sweetman family
- Sweetnam, George, 1909-1981
- Sweetnam, Kathleen, 1904-
- Swift, Deane, 1707-1783
- Swift, Hugh
- Swift, John, 1896-1990
- Swift, Jonathan
- Swift, Jonathan, 1667-1745
- Swift, Jonathan, 1667-1745 ; Ó Neachtain, Seán, c.1640-1729 ; Ó Neachtain, Tadhg, 1671-1752
- Swift, Jonathan, 1667-1745,
- Swift, Jonathan, 1667–1745
- Swift, Jonathan 1667-1745
- Swift, Patrick, 1927-1983
- Swift, Richard, fl. 1852
- Swift, Jonathan, 1667-1745
- Swift family
- Swiney, Daniel, 1826-1915
- Swiney, John
- Swiney, Sarah, d. 1770
- Swing, Francis, fl. 1830-1831
- Switzer, Peter, 1847-1922
- Switzer, Tobias, 1821-1873
- Swords, Liam, c.1937-2011
- Swords, Martin
- Swords, Moyra, b.1919
- Swords family
- Sydney, Algernon, 1623-1683
- Sydow, Carl Wilhelm von, 1872-1952
- Sylvester Carr, Christopher George, 1878-1947
- Sylvester Carr, Ralph, b. c.1876
- Symes, Louisa, c.1858-1868
- Symes, Richard Glascott, 1840-1906
- Synan family
- Synge, (Edmund) John Millington, 1874-1909
- Synge, (Edmund) John Millington 1871-1909
- Synge, Alicia, 1733-1807
- Synge, Charles George, fl. 1880
- Synge, Edward, archbishop, 1659-1741
- Synge, Edward, bishop, 1691-1762
- Synge, J. M. (John Millington), 1871-1909
- Synge, John, 1897-1995
- Synge, John, fl. 1846
- Synge, John Lighton, 1897-1995
- Synge, John Millington, 1871-1909
- Synge, John Millington, 1871-1909 ; Yeats, Jack B. (Jack Butler), 1871-1957
- Synge, John Millington, 1871-1909,
- Synge, John Millington, 1871 1909
- Synge family
- Synge John Millington 1871 1909
- Synnott, Barbara, 1870-1953
- Synnott, Jimmy, d. 2006
- Synnott, Thomas L., 1810-1897
- Synott, Nancy, d. 1973
- Sythe, Saint, d. 870
- Szymanowska, Maria, 1790-1831
- Síl Muiredaig, Mayo, 7th-9th centuries
- Síl nÁeda Sláne
- Súgán, Captain see MacCarthy, Fineen mac Donal Mac Finin, d.1641
- Taafe, Michael
- Taaffe, Denis
- Taaffe, Francis, 4th Viscount Taaffe and 3rd earl of Carlingford, 1639–1704
- Taaffe, Jack, -2023
- Taaffe, James, fl. 1668
- Taaffe, Michael, pseud. see Maguire, Robert Augustine Joseph, 1898-1972
- Taaffe, Nicholas, 2nd earl of Carlingford, fl. 1690
- Taaffe, Nicholas, 2nd earl of Carlingford, fl 1690
- Taaffe, Olivia Mary, 1832-1918
- Taaffe, Peter, d. 1649
- Taaffe, Richard, 1911-
- Taaffe, Theobald, 1st earl of Carlingford, c.1603-1677
- Taaffe, Theobald, 1st earl of Carlingford, d. 1677
- Taaffe, Theobald, c.1603-1677, 1st earl of Carlingford
- Taaffe family
- Tacitus, Publius Cornelius, 56-c.120
- Tackaberry, Fossey, 1796-1847
- Taggart, John G., 1861-
- Taggart, Norman W.
- Tagore, Rabindranath, 1861-1941
- Tagore, Rabindranath, 1861-1941,
- Taise Thaoibhgheal
- Tait, Peter, Sir, 1828-1890
- Tait, Peter Guthrie, 1831-1901
- Tait, Peter Guthrie, 1831–1901
- Tait family
- Talbot, Charles, duke of Shrewsbury, 1660-1718
- Talbot, Christopher
- Talbot, Edmund Bernard, Viscount FitzAlan of Derwent
- Talbot, Hayden, 1882-1962
- Talbot, John, d. 1671
- Talbot, John, Sir
- Talbot, Matt, 1856-1925
- Talbot, Richard, 1735-1788
- Talbot, Richard, bishop, d. 1449
- Talbot, Richard, d. 1769
- Talbot, Richard, earl and duke of Tyrconnell, 1630-1691
- Talbot, Richard, earl and titular duke of Tyrconnell, 1630-1691
- Talbot, Thomas, fl.1865-1866
- Talbot-Crosbie, Bligh, 1881-1917
- Talbot-Crosbie, Maurice, 1880-1953
- Talbot de Wasunville, Richard, d. c.1193
- Talbot family
- Talbot family (of Malahide)
- Taliesin, fl. 6th century AD
- Taliesin, poet, fl. 550
- Tallmadge, William H.
- Tallon, Ronald,
- Tamburini, Pietro, 1737-1827
- Tancred, Augustus Joseph, 1802-1867
- Tandy, James Napper, 1737?-1803
- Tandy, James Napper, 1737?–1803
- Taney, Roger Brooke (1777-1864)
- Tankard family
- Tannahill, Robert,1774-1810
- Tanner, Anthony, 1692-1741
- Tarantino, Quentin Jerome, 1963-
- Tarlton, Richard, -1588
- Tasburgh, Ellis (née Lynch) later Macnemara, d.1736
- Tasburgh, Henry, d.1737
- Tasburgh, John, Sir, d.1629
- Tasburgh, Peregrine, d.1711
- Tasburgh, Thomas, SJ, fl. 1726-7
- Tasburgh family
- Tassie, James 1735–1799
- Tate, Alexander, 1823-1904
- Tate, Isobel Addey, 1875-1917
- Tate, Ralph, 1840-1901
- Tate, William, Capt., 1728-
- Taylor, Alexander, 1746–1828
- Taylor, Alexander, d. 1828
- Taylor, Annie, d.2000/2001
- Taylor, Eva Germaine Rimington, 1879-1966
- Taylor, Frances, 1890-1993
- Taylor, Francis, blessed, c.1550-1621
- Taylor, Francis, d. 1621
- Taylor, George, d. 1836
- Taylor, Helen, 1831-1907
- Taylor, Jeremy, bishop, 1613-1667
- Taylor, Jeremy, bishop, 1613–1667
- Taylor, Jeremy, fl. 1600
- Taylor, Maria Spilsburg, 1776-1820
- Taylor, Rex, 1921-
- Taylor, Robert, 1897-1949
- Taylor, Sackvelle E., Canon, fl.1911-1938
- Taylor, Thomas, 1631-1687
- Taylor, Thomas, fl.1730-1764
- Taylor, Una Ashworth, 1857-1922
- Taylor, William, 1871-1933
- Taylor, William Cooke, 1800-1849
- Taylor, William Desmond (formerly Deane-Tanner, William Cunningham), 1872-1922
- Taylor family
- Taylor family (of Headfort, Co. Meath)
- Taylor family of Faha
- Taylour, Fay, 1904-1983
- Taylour, Geoffrey Thomas, 4th Marquess of Headfort, 1878-
- Taylour, Thomas,1st Marquess of Headfort, 1757-1829
- Taylour Family
- Teahan, Gerald, bishop, d. 1797
- Teahon, Paddy ; O'Toole, Shane
- Teate, Faithful, 1621-
- Teate, Faithful, 1626–1666
- Tedcastle family
- Tedcastle McCormick, Coal Merchants
- Teeling, Bartholomew, 1774-1798
- Teeling, Charles Hamilton, 1778-1850
- Teeling family
- Tegart, Charles Augustus, Sir, d. 1946
- Teggart, Frederick J., fl. 1888
- Teige, Matthew, d. 1652
- Teige, Matthew, d.1652
- Telfair, Charles, 1778-1833
- Telford, Thomas, 1757-1834
- Telford, William, 1809-1885
- Tellett, Morgan Woodward, 1803-1867
- Tellez-Girón, Pedro, 3rd duke of Osuna, 1575-1624
- Temperley, Harold William Vazeille, 1879-1939
- Tempest, Henry Godfrey, 1881-1964
- Temple, Henry, 2nd viscount Palmerston, 1739-1802
- Temple, Henry John, 3rd viscount Palmerston, 1784-1865
- Temple, Henry John, 3rd Viscount Palmerston, 1784-1865
- Temple, John, Sir, 1600-1677
- Temple, Robert (1694-1754)
- Temple, William, Sir, 1628-1699
- Temple family
- Templeton, John, 1766-1825
- Templeton, John, 1766-1835
- Templeton, John, 1766–1825
- Templeton, Robert, 1802-1892
- Tenison, Edward
- Tenison, Louisa
- Tenison, Louisa, Lady, 1819-1882
- Tenison, William Barton, 1743-1818
- Tenison-Woods, Julian Edmund, 1832-1889
- Tennant (née Abraham), Margaret Mary Edith (May), 1869-1946
- Tennent, Gilbert, d. 1764
- Tennent, James Emerson, 1804-1869
- Tennent, John, 1772-1813
- Tennent, John, 1777-1813
- Tennent, Robert, 1765–1837
- Tennent, William, 1759-1832
- Tennent family
- Tennett, William, fl. 1832
- Tennyson, Alfred, 1st baron Tennyson, 1809-1892
- Teresa of Avila, Saint, 1515-1582
- Ternan, Saint, fl. 580
- Terris family
- Terry Alt
- Terry family
- Teskey, Donald, b. 1956
- Teskey family
- Tevlin, James, 1798-1873
- Thackeray (née Becher), Anne, 1792-1864
- Thackeray, Elias, fl. 1803
- Thackeray, Isabella, née Shaw 1816-1893
- Thackeray, Isabella Gethin, 1816-1893
- Thackeray, William Makepeace, 1811-1863
- Thaddeus, Henry Jones, c.1859-1929
- Thaddeus, Henry Jones, d. 1929
- Thatcher, Margaret, 1925-2013
- Thatcher, Margaret Hilda, 1925-2013
- Thatcher, Margaret Hilda, baroness Thatcher of Kesteven, 1925-
- Thayer, Eli (1819-1899)
- Thayer, John, 1755-1815
- The (O')Tooles
- The Barrington family
- The Blayney family
- The Broderick family
- The Brontë family
- The Browne family, marquesses of Sligo
- The Brownes of Carrownacregg
- The Burke family
- The Butler family
- The Byrnes
- The Cahill family
- The Cailleach
- The Cailleach Bérri
- The Cash family, Wexford
- Thecla, Saint
- The Crosbie family
- The Cullen family
- The Daunt family
- The deposed Stuarts, the family of James II
- Thee Carew family
- The Flanagan family
- the Forest family, c. 1728
- The Four Masters
- The Franks family
- The Galphin family
- The Geraldine (FitzGerald) family
- The Glynn family
- The Guinness family
- The Herdman family
- The Hill family
- The House of Desmond
- The Kavanaghs
- The Lumley family
- The Lynch family
- The Mac an Crosáin (MacCrossan) family
- The Mac Coitir family
- The MacMahon family
- The Maguire family
- The Maguire family (Muintir Mhéig Uidhir)
- The Mareward family
- The McCabe family
- The McCallion family
- the McCarthy Spáineach family
- The McCracken family
- The O'Brien family
- The O'Donnell family
- The O'Reilly family
- Theodore, of Mopsuestia, bishop, 350?-428
- Theophilus, Butler, 1669-1723
- Theotokópoulos, Doménikos (El Greco), 1541-1614
- The Richards family
- The Richardson family
- The Romanov Dynasty
- Therry family
- The seven Casey brothers
- The Shirley family
- Thesiger, Wilfred Patrick, Sir, 1910-2003
- The third Viscount Palmerston (1784–1865)
- The Uí Néill family
- the Uí Néill royal family
- The Virgin Mary
- The Walsh Family
- The Winn family
- The Woods family
- they did not use an apostrophe in the surname
- The Éle
- The Ó Ceallaigh/O'Kelly family
- The Ó Domhnaill family
- The Ó Longáin family
- The Ó Neachtain Family
- the Ó Nualláin family
- Thirsk, Joan
- Thistlethwayte, Laura Eliza Jane Seymour, 1831?-1894
- Thom, Alexander, 1801-1879
- Thomas, Caitlin, 1913-1994
- Thomas, duke of Clarence, 1388?-1421
- Thomas, Dylan Marlais, 1914-1953
- Thomas, Edward Meysey, 1886-1974
- Thomas, Edwyn Francis Heaton, 1874-1923
- Thomas, George, 1756?-1802
- Thomas, Graham Stuart, 1909-2003
- Thomas, Quentin, Sir
- Thomas, Richard, d.1720
- Thomas, Robert Webb, 1885-1947
- Thomas, Saint, d. 72 AD
- Thomas, à Kempis, 1379x80-1471
- Thomas Becket, (also called Thomas á Becket), 1118-1170
- Thomas de Chaddesworth, fl.1284-1311
- Thomas de Crumlin
- Thomas de Rokeby, d. 1357
- Thomas family
- Thomas Maguire, Thomas, Rev., 1792-1847
- Thomas of Ireland
- Thomas of Ireland (or, de Hibernia), fl.1306
- Thomas of Woodstock, earl of Buckingham and duke of Gloucester, 1355-1397
- Thomas Roberts, 1748-1778
- Thomas Scottus ?9th century
- Thomas Ward, Dean of Conor
- Thomond, Earls of
- Thompson, Benjamin (Count Rumford), 1753-1814
- Thompson, Bonar, 1888-1963
- Thompson, D'Arcy Wentworth, 1829-1902
- Thompson, D'Arcy Wentworth,1829–1902
- Thompson, D'Arcy Wentworth, 1860-1948
- Thompson, David, c.1849-
- Thompson, Edward Palmer, 1924-1993
- Thompson, F. Glenn (Frederick Glenn), 1938-2016
- Thompson, Gordon Augustus, 1799-1886
- Thompson, Ivan
- Thompson, James, 1786-1849
- Thompson, James, 1822-
- Thompson, James, d. 1847
- Thompson, James 1727-1812
- Thompson, John, fl. 1861
- Thompson, John Smylie McDewell, fl. 1864-1908
- Thompson, Mary, fl. 1817
- Thompson, Robert "Stamper", 1805-1885
- Thompson, Samuel (Sam), 1916-1965
- Thompson, Samuel, 1916-1965
- Thompson, Sydney Mary, 1847-1923,
- Thompson, Thomas, d.1888
- Thompson, Tommy R.
- Thompson, William (1805-1852)
- Thompson, William, 1775-1833
- Thompson, William, 1778-1833
- Thompson, William, 1805-1852
- Thompson, William, 1824-1907
- Thompson, William, fl.1888-1903
- Thompson Butler, Elizabeth (Ladty Butler), 1846-1933
- Thompson family
- Thomson, Charles, fl. 1789
- Thomson, David, 1914-1988
- Thomson, George, 1757-1851
- Thomson, George Derwent [Seoirse Mac Tomáis], 1903-1987
- Thomson, Gordon Augustus, 1799-1886
- Thomson, James, 1786-1849
- Thomson, James, 1822-1892
- Thomson, James, 1822–1892
- Thomson, Samuel, 1766-1816
- Thomson, Samuel, 1766-1816,
- Thomson, William, 1st baron Kelvin of Largs, 1824-1907
- Thomson, William, 1st baron Kelvin of Largs, 1824-1907,
- Thomson family
- Thoreau, Henry David, d. 1862
- Thorgrim (Þorgrímr) fl.c.1100
- Thorkel Farserk, fl c. 1000
- Thorkelin, Grímur Jónsson, d. 1829
- Thorkelín, Grímur Jónsson, 1752-1829
- Thorneycroft, George Edward Peter, baron Thorneycroft, 1909-1994
- Thorngate, James, fl. 1850s
- Thornhill family
- Thornley, Anastasia (née Burke), 1827-1907
- Thornley, David, 1935-1978
- Thornley family
- Thornton, Alice, 1626-1707
- Thornton, Brigid Lyons, 1896-1987
- Thornton, Ernest James Vernon, 1890-1912
- Thornton, Frank, 1908-1997
- Thornton, Joseph P., 1939-1945
- Thornton family
- Thorp, Charles, fl.1781-1800
- Thorpy, Jane, d. 1905
- Thorsteinn Surtr, c.950
- Thrapston, Henry de
- Threlkeld, Caleb, 1676-1728
- Threlkeld, Caleb, 1676-1728 ; Ó Neachtain, Tadhg, 1671-1752
- Thuillier, Louis, 1783-1815
- Thunder, Elizabeth, fl.1553-1554
- Thurloe, John, 1616-1668
- Thurneysen, Rudolf, 1857-1940
- Thurot, François, 1727-1760
- Thurston, Charles Temple, 1879-1933
- Thurston, Katherine, 1875-1911
- Thurston, Katherine Cecil, 1874-1911
- Thynne, Thomas, 1st Viscount Weymouth, 1640-1714
- Tiarnach, Saint
- Tiarnach of Clones, fl. 6th C.
- Tichborne, Charles Robert Clarke, d.1905
- Tichborne, Henry, Sir, 1581-1667
- Tichborne family
- Tierney, Edward, 1780-1856
- Tierney, J. J., b. 1910
- Tierney, Mark, O.S.B., 1925-2011
- Tierney, Matthew, 1776-1845
- Tierney, Michael, 1894-1975
- Tierney, Michael, 1894–1975
- Tieze, Franz, 1842-1932
- Tigernach, abbot and bishop, d. c.549
- Tigernmas
- Tighe, Henry, 1771-1836
- Tighe, Joan, 1923-2014
- Tighe, Mary, 1772-1810
- Tighe, Michael, 1884-1926
- Tighe, Sarah, 1743-1820
- Tighe, Tony, 1927-2005
- Tighe, William, fl. 1801
- Tighe, William Frederick Fownes, d.1878
- Tighe family
- Till, Samuel, fl. 1848-1888
- Tilney, W.A., 1868-1947
- Tilson, Ernest
- Tilson, Ernest ; Tilson, née Barnes, Mary ; Gavan Duffy, George
- Tilson, Mary
- Timaeus
- Timmons, James, 1886-1960
- Tindal, Matthew, 1657-1733
- Tinney, Sheila Christina (née Power), 1918-2010
- Tinney, Sheila Christina (née Power) d.2010
- Tinsley, William, 1804-1885
- Tipper, Richard
- Tipping, Edward, 1826-1896
- Tipping, Edward, c.c.1826-1896
- Tipping, Thomas, post 1708-1776
- Tipping family
- Tippins family
- Tiptoft, John, earl of Worcester, 1427-1470
- Tirrell, John, fl.1566
- Tirry, William, Bishop of Cork, 1571-1646
- Tirry, William, O.S.A., 1608-1654
- Tisdal, Philip, bap. 1703, d. 1777
- Tisdall, Charles, 1719-1757
- Tisdall, John, 1815-1892
- Tisdall, Robert Morton Newburgh ('Bob'), 1907–2004
- Titian, c. 1488-1576
- Tivy, Henry Lawrence, 1848-1929
- Tivy, Joy, 1924-1995
- Toal, Gerard, d. 1928
- Tobin, Bill, 1931-
- Tobin, Daniel J., 1872-1955
- Tobin, Edmond, d.1921
- Tobin, family
- Tobin, James, d.1884
- Tobin, John, d.1940
- Tobin, John, fl.1913
- Tobin, John E., 1847-1894
- Tobin, Marian, 1872-1955
- Tobin, Michael
- Tobin, Michael, 1918-2011
- Tobin, Michael, ?-2013
- Tobin, Patrick, 1903-
- Tobin famile
- Tobin family
- Tobyn, Anastatia, d. c.1400
- Tocqueville, Alexis de, 1805-1859
- Tocqueville, Alexis de, 1805-1859,
- Tod, Isabella
- Tod, Isabella, 1836-1896
- Tod, Isabella M.S., d. 1896
- Tod, Isabella Maria Susan, 1836-1896
- Todd, Annie (née Currie), 1924-2013
- Todd, James Eadie, 1885–1949
- Todd, James Eadie, fl. 1945
- Todd, James Henthorn, 1805-1869
- Todd, William, d. 1791
- Tohall, Patrick, 1887-1973
- Toirdelbach Ua Briain, king of Munster, 1009-1086
- Toksvig, Signe, 1891-1983
- Toland, John, 1670-1722
- Toland, John, 1670–1722
- Toler, Hector John, d. 1839
- Toler, John, Lord Norbury, 1745-1831
- Toler-Aylward, Maura, 1932-2003
- Toler Family
- Toller, Ernst, 1893-1939
- Tolstoy, Lev Nikolaevich, fl. 1905
- Tolstoy-Miloslavsky, Dmitri Nikolaevich, Count, 1978-
- Tomkins family
- Tomlinson, W.J.C., d.1921
- Tommasini, Anselmo, b.1876
- Toms, John Patrick, c.1901-post 1983
- Toms, Willie, 1910-1983
- Tone, (Theobald) Wolfe. 1763-1798
- Tone, Matilda, d. 1849
- Tone, Theobald Wolfe, 1763-1798
- Tone, Theobald Wolfe, 1763–98
- Tone, Theobald Wolfe, 1763–1798
- Tone, William
- Tong family
- Tonna, Charlotte Elizabeth, 1790-1846
- Toohey, James Matthew, 1850-1895
- Toohey, John, d. 1869
- Toohey, John Thomas, 1839-1903
- Toohey, Joseph Henry, d. 1918
- Toohey, Thomas, d. 1915
- Tooke, Andrew, d. 1732
- Toole, Brirne, fl. 1636
- Toole, Luke, fl. 1636
- Topp, Arthur, Manning 1844-1916
- Topping, William, 1890-1978
- Torbitt, James, c.1822-1895
- Torin, L.H.
- Tormey, James, -1921
- Tormey, Joseph, -1921
- Tormey, Michael, 1820-1893
- Torrans, John 1702-1788
- Torrens, David Smyth, 1897-1967
- Torrens, Robert, 1780-1864
- Torrie, Margaret (Peg), 1894-1983
- Tottenham, Charles, MP, 1685–1758
- Tottenham, Charles B., 1924-1992
- Tottenham, Edward, Rev., 1810-1853
- Tottenham family
- Touchet, James, 3rd earl of Castlehaven, 1617-1684
- Touchet, Mervin, Lord Audley, 2nd earl of Castlehaven, d. 1631
- Toutcher, Richard, d. 1841
- Towgood Roch, Sampson, 1759-1847
- Townley, Christopher, 1915-2005
- Townley family
- Townley family ; Johnston, Francis, 1760-1829
- Townsend, Agnes, fl. 1845
- Townsend, Charles
- Townsend, Charlotte Payne, 1857-1943
- Townsend, Edmund Paul, 1798-
- Townsend, George, 1st Marquess Townsend, 1724-1807
- Townsend, Horace, fl.1803-1810
- Townsend, John Sealy Edward, Sir, 1868-1957
- Townsend, Richard W., fl.1845
- Townsend, Thomas, fl. 1809-1814
- Townsend family
- Townshend, Charles, 1725-1767
- Townshend, George, 4th viscount and 1st marquis, 1724-1807
- Townshend, George, 4th viscount and 1st marquis Townshend, 1724-1807
- Townshend, Thomas, fl. 1800-1814
- Townshend family
- Toynbee, Arnold Joseph, 1889-1975
- Tracey, Daniel, 1795-1832
- Tracy, Michael, fl. 1890
- Tracy, Richard Thomas, 1826-1874
- Trail, James, fl. 1718
- Trail, John
- Traill, Anthony, 1838-1914
- Traill, Howard Duff, 1842-1900
- Traill, Robert, fl. 1847
- Traill family
- Trainor, Bernard Ignatius (Brian), 1928-2018
- Trajektin von Solms-Braunfels, Heinrich, 1638-1693
- Trant family
- Trapattoni, Giovanni, 1939-
- Trapp, Agathe von (née Whitehead), 1891-1922
- Trapp, Georg (Johannes/Ludwig?) Ritter von, 1880-1947
- Traube, Ludwig, 1861-1907
- Travers, John
- Travers, Nicholas Colthurst, 1787-1871
- Travers, Robert, Dr.
- Travers, Walter, d.1635
- Travers family
- Traynor, Donna
- Traynor, Eliza (née Kehoe), c. 1838-1921
- Traynor, John, c.1843-1926
- Traynor, Joseph Patrick, 1900-1920
- Traynor, Oscar, 1886–1963
- Traynor, Thomas, 1882-1921
- Traynor family
- Treacy, Joe, 1939-2006
- Treacy, Philip, b. 1967
- Treacy, Sean
- Treacy, Sean, 1895-1920
- Treacy family
- Tredennick family
- Treffoiy, H.W.
- Tregian, Francis, the Elder, 1548-1608
- Tregury, Michael, archbishop of Dublin, c.1399–1471
- Trehy family
- Trench, Cesca (Trinseach, Sadhbh), 1891-1918
- Trench, Cesca Chenevix, 1881-1918
- Trench, Chalmers, c.1906-
- Trench, Charles le Poer, archdeacon
- Trench, Frederick, 1746-1836
- Trench, Frederick William, 1775-1859
- Trench, Helena, 1820-1908
- Trench, Henry, 1685-1726
- Trench, Isabella Chenevix, 1850-1927
- Trench, Jean, 1908-1974
- Trench, John Townsend, 1834-1909
- Trench, Margot Chenevix, 1889-1936
- Trench, Melesina, 1768-1827
- Trench, Michael Frederick
- Trench, Michael Frederick, 1746-1836
- Trench, Paddy
- Trench, Patrick Mackenzie FitzJohn (Paddy), 1905-1948
- Trench, Power Le Poer, archbishop of Tuam, 1770-1839
- Trench, Power Le Poer, d. 1839
- Trench, Richard Chenevix, 1807-1886
- Trench, Richard Steuart (‘William Steuart Trench’), 1808–1872
- Trench, Richard William Steuart, 1808-1872
- Trench, Thomas, 1761-1834
- Trench, William Steuart, 1808-1872
- Trench, William Steuart, 1808-1872
- Trench family
- Trench family, earls of Clancarty
- Trent-Stoughton, Rose, 1840-1924
- Tresilian, Stewart R., 1829-1869
- Tressell, Robert see Noonan, Robert Philippe (Robert Tressell), 1870–1911
- Tresswell, Thomas, fl. c.1440-1470
- Trevelyan, Charles Edward, Sir, 1807-1886
- Trevelyan, Charles Edward, Sir, 1807–1886
- Trevelyan, George Macaulay, 1876-1962
- Trevelyan, George Otto, Sir, 1838-1928
- Trevor, Helen Mabel, 1831-1900
- Trevor, William, 1928 – 2016
- Trevor, William, 1928-
- Trevor-Roper, Hugh, 1914-2003
- Trevor-Roper, Hugh Redwald, baron Dacre, 1914-2003
- Trichet, Jean-Claude, 1942-
- Trimble, William, d. 1886
- Trimble, William Copeland
- Trimble, William David, 1944-
- Trinseach, Sadhbh, see Trench, Cesca Chenevix, 1881-1918
- Trivet, Nicholas, 1258?-1328
- Trocchi, Alexander Whitelaw Robertson,1925-1984
- Trohear, Leonard, 1876-
- Trollope, Anthony
- Trollope, Anthony, 1815-1882
- Trollope, Anthony, 1815-1882 ; Thackeray, William Makepeace, 1811-1863; Arnold, Matthew, 1822-1888
- Tronton, Frederick Thomas, 1863-1922
- Trotsky, Leon, 1879-1940
- Trotter, John Bernard, 1774-1818
- Trotter, John Bernard, 1775-1818
- Trotter family
- Trouton, Jennifer,
- Troy, Dermot, 1927-62
- Troy, Dermot, 1927-1962
- Troy , John Thomas, 1739-1823
- Troy, John Thomas, archbishop, 1739-1823
- Troy, John Thomas, archbishop, 1739-1823,
- Troy, John Thomas, archbishop, 1739–1823
- Troy, John Thomas, Archbishop, Bishop, 1739-1823
- Troy, John Thomas, bishop, 1739-1823
- Troy, Patrick, 1891-1977
- Troy, Thomas, 1860-1904
- Troy, Thomas, d.1898
- Troy family
- Troyon, Frederic
- Trudeau, Pierre Elliott, 1919-2000
- Trumbull, Nathaniel, 1749-1823
- Trychay, Christopher, fl1520-1574
- Tuchet, James, Lord Audley and 3rd earl of Castlehaven, c.1617-1684
- Tuckey, James Hingston, 1776-1816
- Tudor, house of
- Tudor, Hugh, 1871-1965
- Tudor, Sir (Henry) Hugh, 1871–1965
- Tudor, Sir Henry Hugh, 1871-1965
- Tuibear, Risteard (Richard Tipper), d. 1730
- Tuit, Joan, d. 1376
- Tuite, Breeda, d.2023
- Tuite, Daniel
- Tuite, James, 1849-1916
- Tuite, Nicholas
- Tuite, Nicholas, 1705-1772
- Tuite family
- Tuke, James Hack, 1819-1896
- Tuke family
- Tully, Jasper, 1858-1938
- Tully, Jim, 1886-1947
- Tully, Patrick, fl.1654-1711
- Tully family
- Tumalti, Bernard, c.1799-1871
- Tumblety, Francis J., 1833-1903
- Tumulti, Bernard, fl.1850-51
- Tunney, Gene, 1897-1978
- Tunney, Patrick M., D.C., c.1887-1951
- Tunnicliffe, Jabez, fl.1847
- Tunstal, William, fl.1715-1716
- Tuohy, Patrick J., 1894-1930
- Tuohy, Patsy
- Tuomey, William
- Tupper, Charles, Sir, 1821-1915
- Turing, Alan, 1912-1954
- Turkington, Robert Wilkinson, 1920-1945
- Turnbull, Agnes Sligh, 1888-1982
- Turner, Edith, 1921-
- Turner, Eoin
- Turner, Martyn, b.1948
- Turner, Mary, 1938-2017
- Turner, Michael, 1922-2000
- Turner, Richard, 1798-1881
- Turner, Samuel, 1765?–1810?
- Turner, Thomas, c.1820-1891
- Turner, Thomas, d.1891
- Turner, Timothy
- Turner, Victor Witter, fl. 1953-
- Turnerelli, Peter, 1774-1839
- Turpin, Maud Adelaide Otway (née Hatchell)
- Turpin, Thomas Keith
- Turpin family
- Turraoin, Maidhc, 1878-1966
- Turraoin, Micheál, 1878-1963
- Tussaud, Marie, 1760-1850
- Tuthill family of Faha
- Twain, Mark, 1835-1910
- Tweed, William M., fl. 1870
- Tweed, William Marcy, 1823-1878
- Tweedie, John, 1775-1862
- Tweedy, (Muriel) Hilda, 1911-2005
- Tweedy, (Muriel) Hilda, 1911–2005
- Tweedy, Hilda, 1911-2005
- Tweedy, Robert Massey, 1909-post 1964
- Tweedy family
- Twigg, Eliza (Elizabeth, Lizzie) Anne, 1881-1933
- Twigg, Eliza Anne (Lizzie), 1881-1933
- Twigg, Thomas, 1824-1909
- Twigge, Robert William, fl 1908-1915
- Twiss, John, d. 1895
- Twiss, Richard, 1747-1821
- Twohig, Dermot, d. 1989
- Twohig, John W., 1806-1891
- Twomey, Dermot
- Twomey, J. C.
- Twomey, Maurice (Moss), 1897-1978
- Twomey, Maurice (Moss), fl. 1926-1936
- Twomey, Maurice, Moss, fl. 1936
- Tyers, Pádraig, 1925-2010
- Tyler, Ralph W., fl. 1969
- Tynan, Eddie
- Tynan, Katharine, 1859-1931
- Tynan, Ronan, 1960-
- Tynan Hinkson, Katharine, 1861-1931
- Tyndale, Hector, Brig., 1821-1880
- Tyndale, William, d. 1536
- Tyndall, John, 1820-1893
- Tyndall, John, 1820–1893
- Tyndall family
- Tynte, Robert, Sir, fl. 1636
- Tyrel, Henry, d.1305
- Tyrel family
- Tyrell, Charles, b. 1950
- Tyrell, George, 1861-1909
- Tyrell, Thomas, fl. 1843
- Tyrrell, George, 1861-1909
- Tyrrell, Hugh, 1130-1199
- Tyrrell, Ivan, fl. 1943-1962
- Tyrrell, Kate, 1863-1921
- Tyrrell, Patrick, 1917-
- Tyrrell, Patrick, O.F.M., d. 1692
- Tyrrell, Patrick, OFM, d. 1692
- Tyrrell, Peter, 1916-1967
- Tyrrell, Richard, 1553-1632
- Tyrrell, Richard, d. 1642
- Tyrrell, Robert Yelverton, 1844-1914
- Tyrrell, William, Jonathan Houghton, fl.1883
- Tyrrell, William Jonathan Houghton
- Tyrrell family
- Tyrry (Terry) family
- Táin bó Cúailnge
- Tírechán, fl. 664-700
- Tóibín, Colm, 1955-
- Tóibín, Nioclás, 1890-?
- Tóibín, Nioclás, 1928-1994
- Tóibín, Nioclás, fl.1930-60
- Tóibín, Pádraig, 1904-1995
- Tóibín, Seán, 1882–1971
- Tólae, bishop and saint, d.738
- Túpac Amaru II (Diego Cristóbal), 1750-1783
- U2, fl. 1976-
- Ua Briain, Domnall Mór, d.1194
- Ua Briain, Muirchertach, d.1119
- Ua Brolcháin, Máel-Ísu (Ó Brolcháin, Maol Íosa), d. 1086
- Ua Canannáin
- Ua Canannáin dynasty
- Ua Canannáin family
- Ua Ciarmhaic, Mícheál, 1906-
- Ua Conchabair, Feidlim, d. 1265
- Ua Conchobair, Ruaidrí (d. 1198), overking of Connacht and high-king of Ireland
- Ua Conchobair, Ruaidrí, overking of Connacht and high-king of Ireland, d. 1198
- Ua Conchobair, Toirdelbach, 1088-1156
- Ua Conchobair, Toirrdelbach, d. 1156
- Ua Cuirnín, Giolla Caomháin, ?15th century
- Ua Donnachadha, Tadhg, d. 1945
- Ua Dungain, Mael Muire, 1040-1117
- Ua Dúnáin, Mael Muire, 1040-1117
- Ua Flaithbertaig, Domnall, c.1174
- Ua Gallchobair, Máel Coba, d. 1022
- Ua Gríofa, Muircheartach ; Ó Dubhagáin, Muircheartach
- Ua hAinmire, Máel-Ísu (Malchus), 1st bishop of Waterford, c.1047–1135
Malchus see Ua hAinmire, Máel-Ísu (Malchus), 1st bishop of Waterford, c.1047–1135
- Ua hArtacáin, Cináed (?-975)
- Uaidín, Lucas, O.F.M.
- Ua Laoghaire, Peadar, fl. 1878
- Ua Liatháin, Cormac, fl. late 6th cent.,
- Ua Lothcháin, Cúán, d. 1024
- ua Maeluanaig, Mael Brigte
- Ua Maoileoin, Pádraig, 1913-2002
- Ua Máel Muaid, Ailbe (Albinus O'Mulloy), d. 1223
- Ua Máelshechlainn, Conchobar, d. 1073
- Ua Nubhadh, Muiris (Maurice Newby), fl.1700-1715
- Ua Ruairc, Tigernán, 1124-1172
- Ua Ruairc, Tigernán, d. 1172
- Ua Ruairc, Tigernán, son of Donnchad and king of Bréifne, d. 1172
- Ua Ruairc, Tigernán, son of Donnchad and king of Bréifne, d. 1172
- Ua Ruairc family
- Ua Ríghbhardáin, Tadhg, (fl. 1470s)
- Ua Tuathail, Lorcán (O'Toole, Laurence), c.1128–1180 see Laurence O'Toole, bishop and saint, 1130?-1180
- Ubaldini, Petruccio, d. c.1600
- Ugolino, Tiberio, Bishop of Down and Connor, fl. 1483-1519
- Uilliam [Liam] P(ádraig) Ó Riain, 1867-1942
- Ulbricht, Walter, 1893-1973
- Ullathorne, William, bishop, 1806-1889
- Ultagh family
- Ultan, Saint, d. 656
- Underwood, James Henry, fl. 1800-1875
- Underwood, John, d. 1834
- Ungerer, Jean-Thomas "Tomi", 1931-2019
- Uniacke, James Boyle, 1755-1830
- Uniacke, John James Fitzgerald, 1797-1825
- Uniacke, Richard John, 1789-1834
- Unkles family
- Unland, Werner, d. 1962
- Unwin, Raymond, Sir, 1863-1940
- Upington, Thomas, 1845-1898
- Upton, Anthony, fl.1700-1706
- Upton, Henry, 1870-1947
- Upton, James W., 1872-1956
- Upton, James W., fl. 1916
- Upton, Joseph W., 1872-1956
- Upton, William, 1845-1925
- Upton, William. 1845-1925
- Urban VIII, Pope, 1568-1644
- Uris, Leon, 1924-2003
- Urnaith, saint, 7th cent.?
- Urson, Peter
- Ursula, saint 4th/5th century?
- Usborne, Thomas Masters, d.1883
- Usher, Isaac William, 1896-1916
- Usher, Isaac William, MD, 1840-1917
- Usher, James,1581-1656
- Usher, James, 1720-1772
- Usher, Oliver, d.2023
- Ushes, Rosie Henrietta (née Meyler), 1864-1909
- Usk, Adam, c.1350-1430
- Ussher, Archbishop James, 1581–1656
- Ussher, Arland, 1899-1980
- Ussher, Arthur
- Ussher, Arthur, 1777-1862
- Ussher, Henry, 1741-1790
- Ussher, Henry, c.1550-1613
- Ussher, James, 1581-1656
- Ussher, James, archbishop, 1581-1656
- Ussher, James, archbishop, 1581-1656,
- Ussher, James, Archbishop, Bishop, 1581-1656
- Ussher, James, bishop, 1581-1656
- Ussher, Richard John, 1841-1913
- Ussher family
- Uí Bairrche
- Uí Bhriain (O'Brien), Máire Rua (Maighréad Rua/Ruadh), c. 1615-
- Uí Bhriain, Sadhbh, fl. c. 1400
- Uí Bhriain family
- Uí Bhruadair, Dháibhí, fl. 1691
- Uí Bhré, Máire bean. c.1892-?
- Uí Briain
- Uí Briain family
- Uí Briúin
- Uí Briúin family
- Uí Briúín
- Uí Ceallaigh, Phyllis Bean see Ryan, Philomena Frances (Phyllis O'Kelly), 1895–1983
- Uí Chanannáin, Donnchadh mac Domhnaill, fl. 1103
- Uí Chennselaig family
- Uí Chiaróg family
- Uí Chinnsealaigh
- Uí Chonaill
- Uí Chéilleachair, Áine 1945-
- Uí Conchobair kings
- Uí Dhomhnaill
- Uí Dhálaigh
- Uí Dochartaigh
- Uí Dálaigh, Máirín [Nic Dhiarmada], c.1909-1994
- Uí Dúnlainge
- Uí Echlach Airthir
- Uí Fhidgente
- Uí Fidgeinte
- Uí Ghallchóir, Shecún, 1913-2002
- Uí Ghiolla Sheanáin family
- Uí Ghrianna, Róise Rua
- Uí Longáin, Micheál Mac Peadair, 1693--1770
- Uí Luasa, Maighréad
- Uí Maine
- Uí Maine family
- Uí Mhaine
- Uí Mhaoilchonaire Family
- Uí Mhaoir
- Uí Mhaí, Máire Rua, 1906-2001
- Uí Mheára, Phádraig ; Ó Meára, Pádraig, 1893-
- Uí Mhithighéin
- Uí Mhoilchonaire family
- Uí Mhordha family
- Uí Mháine
- Uí Muiredaig family
- Uí Neill family
- Uí Nialláin
- Uí Néill
- Uí Néill family
- Uí Néíll
- Uí Raighaillaigh, Maol Mórdha Óg, d.1617
- Uí Shúilleanbháin, Mhuiris, 1904-1950
- Uí Thaithligh
- Uí Thuairisc, Eoghain
- Uí Thuama, Róisín, 1919–2005
- uí Ógáin, Ríonach
- Vaizey, John, Baron Vaizey, 1929-1984
- Valentine family
- Valescus de Taranta, 1382-1417
- Vallancey, Charles, 1731-1812
- Vallancey, Charles, General, 1721-1812
- Vallancey, Charles, General, 1725-1812
- Vallancey, Charles, General, 1725?-1812
- Vallancy, Charles, d. 1812
- Vallely, Brian 1941-
- Vallely, Eithne 1945-
- Vallely, John, 1908-1985
- Vallely family
- Vallentin, Hugo
- Vallentin, Hugo Ferdinand, 1860-1921
- Vanbrugh, John, Sir, 1644-1726
- Vance family
- Vandeleur, Crofton Moore, 1808-1881
- Vandeleur, Hector Stewart, 1836-1909
- Vandeleur, John Scott, 1791–p. 1833
- Vandeleur, John Scott, fl. 1833
- Vandeleur, Thomas Burton, 1836-1880
- Vandeleur family
- Vandeleur Lee, George John, 1820-1886
- Vanderbeck, James, d.1642
- Vanderstraten, Kateline., fl. 1458
- Van de Velde, Firmin, 1888- after 1952
- Van Dyck, Anthony, Sir, 1599-1641
- VanDyke, Mark A.
- Vane, Charles William, 3rd marquess of Londonderry, 1778-1854
- Vane, Charles William, 3rd Marquess of Londonderry, 1778-1854
- Vane, Frances Anne, Marchioness of
Londonderry,1800-1865
- Vane, Frances Anne, Marchioness of Londonderry,1800-1865
- Vane, Frances Anne, marchioness of Londonderry, 1800-1865
- Vane, Francis Fletcher, Sir, 1861-1934
- Vane, Sir Francis Patrick Fletcher, 1861–1934
- Vane-Tempest-Smith, Alexander Charles Robert, 9th marquess of Londonderry, 1937-
- Vane-Tempest-Stewart, Charles Stewart Henry, 7th marquess of Londonderry, 1878-1949
- Vane-Tempest-Stewart, Charles Stewart Henry, Marquess Londonderry, 1878-1949
- Vane-Tempest-Stewart, Edith Helen, marchioness of Londonderry, 1878-
- Vane-Tempest-Stewart, Edith Helen, marchioness of Londonderry, 1878-1959
- Vane-Tempest-Stewart family, earls and marquesses of Londonderry
- van Gogh, Vincent, 1853-1890
- Van Hamel, Anton Gerard, 1886-1945 ; Dillon, Myles, 1900-1972
- Van Hamel, Anton Gerardus, 1886-1945
- Van Homrigh (Vanhomrigh), Esther (Hester) ("Vanessa"), 1688-1723
- Van Nost, Jan, d. 1712
- Van Nost, Jan 1713-1780
- Van Nost, John II, 1710-1780
- Van Reede, Godard, 1644-1703
- Van Rodenburgh, Cornelius de Long, fl. 1797
- Vansce family
- Vanston, Dairine, 1903-1988
- Vanzetti, Bartolomeo, d.1927
- van Zuylen van Nyevelt, Louise Catherine Antoinette, Baroness, 1891-1971
- Varadkar, Leo, 1979-
- Varadkar, Leo, b.1979
- Varian, Elizabeth Willoughby, 1821–1896
- Vaughan, A. O. (Arthur Owen) (Owen Rhoscomyl), 1863-1919
- Vaughan, George, 1693-1752
- Vaughan, George, 1693-1763
- Vaughan, Henry, 1622-1695
- Vaughan, Henry, 1809-1899
- Vaughan, Herbert, cardinal, d. 1903
- Vaughan, James, d.1684
- Vaughan, Jeremiah, fl.1833-1879
- Vaughan, John, 1893-1921
- Vaughan, William Peisley Hutchinson Lloyd, fl.1880
- Vaughan family
- Vaughan Williams, Ralph, 1872-1958
- Vaughey family
- Vaughlan-O'Loughlin family
- Vault, Francois-Eugène de, 1717-1790
- Vay, Miklós, Baron, d. 1824
- Velazequez, Diego, 1599-1660
- Venantius Fortunatus, Saint, c.540-c.600
- Venedey, Jacob, 1805-1871
- Venedey, Jakob
- Ventura, Gioacchino, 1792-1861
- Verdon, James, 1652-1741
- Vereker, Charles, 2nd Viscount Gort, 1768–1842
- Vereker, Charles Smyth, fl. 18?
- Vereker, John
- Vereker family
- Vere O'Brien, Florence, 1854-1936
- Vere O'Brien family
- Vergil, Polydore, c.1470-1555
- Vergilius, Saint, d. 784
- Vergilius, Saint, d.784
- Verker, Standish, 7th Viscount Gort, 1888-1975
- Verling, Máirtín, 1946-2007
- Verner, Jenny, 1821-1899
- Verner, William, Bt, 1782-1871
- Verner family
- Verney, Richard Greville, 19th baron Willoughby de Broke, 1869-1923
- Vernulaeus, Nicholaus, 1583-1649
- Verschoyle, Barbara, c.1749-1837
- Verschoyle, John, d.1840
- Verschoyle, Moira, fl. 1960
- Verschoyle, Winifred M. see Letts, Winifred Mabel, 1882-1972
- Vertue, George, 1683-1756
- Vesalius, Andreas, 1514-1564,
- Vesey, Elizabeth, d. c. 1795
- Vesey, Eustace
- Vesey, John,
- Vesey, John, 2nd Viscount de Vesci, 1771-1855
- Vesey, John, archbishop, 1638–1716
- Vesey, John, fl. 1950
- Vesey, John Denny, Sir, 1st lord Knapton, 1709-1761
Vesey, John, 2nd Lord Knapton, 1st Viscount de Vesci, c.1735-1804
- Vesey, Thomas, 1st Viscount de Vesci, 1735-1804
- Vesey, Thomas, 3rd Viscount de Vesci
- Vesey, Thomas Eustace
- Vesey, Yvo Richard, 5th Viscount de Vesci, ?1881-?1958
- Vesey-Fitzgerald family
- Vesey family
- Vesey family, Viscounts Abbeyleix
- Vesey Stoney family
- Vessey family
- Vicar family
- Vicars, Arthur Edward, Sir, 1864-1921
- Vickery, George, 1845-1920
- Victoria, princess, 1868-1935
- Victoria, queen, 1819-1901
- Victoria, Queen, 1819-1901 ; Ellis, Thomas Flower. d.86
- Victoria, queen, 1819–1901
- Victoria Adelaide Mary Louise, Princess Royal of Great Britain and empress of Germany, 1840-1901
- Victorius of Aquitaine fl. 457
- Victory, Gerard, 1921-95
- Vidal, Marcel
- Vierpyl, Simon, c.1725-1810
- Vignoles, Charles, 1793-1874
- Vignoles, Charles Blacker, 1793-1875
- Vigors, Nicholas Aylward, 1786-1840
- Vigors, Philip, Doyne, 1825-1903
- Vigors, Philip Doyne, 1825-1903
- Vigors, Philip Doyne, Col., 1825-1903
- Vigors, Timothy Ashmead, 1921-2003
- Vigors family
- Vigée-Lebrun, Louise-Elisabeth, 1755-1842
- Villers, Henry, 1843-1913
- Villers, William, c.1780-post 1843
- Villiers, George, 1st duke of Buckingham, 1592-1628
- Villiers, George, 2nd duke of Buckingham, 1628-1687
- Villiers, George William Frederick, 4th earl of Clarendon, 1800-1870
- Villiers, Hannah
- Villiers-Stuart, Henry, 1803-1874
- Villiers-Stuart, James, d.2004
- Villiers-Stuart family,
- Vincens, Louise-Cécile (née Bouffé), 1840-1908
- Vincent, Arthur Rose, 1876-1956
- Vincent de Paul, Saint, 1581-1660
- Vincent family
- Vincent Madelgarius, aka Maelceadar, d.677
- Vine, George Robert, 1825-1893
- Violante (Larini), Signora, 1682-1741
- Virgil, Publius Virgilius Maro, 70BC-19BC
- Virgil, Publius Virgilius Maro, 70BC-19BCAdomnán (Adamnán), Saint, c.624-704
- Virgilius, archbishop and saint, d. c.610
- Virgilius Maro Grammaticus, fl. 630
- Virgilius Maro Grammaticus, fl. c.650
- Virgilius of Salzburg, Saint, d. 784
- Vital, Laurent, fl.1517-1518
- Vivekananda, Swami (Narendranath Datta), 1863-1902
- Vize, Charles, d.1927
- Vize, Joseph E., d.1959
- Vlad III Dracul, Prince of Wallachia, 1431-1476
- Voght, Caspar
- Vogue (Vauk), Saint, fl. 6th century?
- Voltaire, François Marie Arouet, 1694-1778
- Von Banfield, Gottfried
- von Ehrenberg, Philipp Adolf, 1583–1631, Prince-Bishop of Würzburg
- Von Feinagle, Gregory, 1785-1819
- von Humboldt, Alexander, 1769-1859
- Von Munchhausen, Ludolf, 1570-1640
- von Papen zu Köningen, Franz Joseph Hermann Michael Maria, 1879-1969
- von Petrikovits, Harald, 1911-2010
- von Ranke, Leopold, 1795-1886
- von Rintelen, Franz Dagobert Johannes, 1877-1949
- von Stieglitz, Frederick, Baron, 1803-1866
- von Stieglitz, Hester Anna (née Blacker), 1810-1899
- Von Stieglitz, John Lewis, 1809-1968
- von Stieglitz family
- Von Stockum, Hilda, 1908-
- von Sydow, Carl Wilhelm, 1872-1952
- Vontom (née O'Toole), Rose Anna (Rosa D'Erina), 1848-1915
- Vortigern
- Vossius, Gerardus Joannes, 1577-1649
- Vossius, Isaac, 1618-1689
- Voster, Elias, 1682-1779
- Vowell, Christopher, 1639-1709
- Vowell, Richard Prendergast, d.1911
- Vowell family
- Voynich (née Boole), Ethel Lilian, novelist, 1864-1960
- Voynich, Ethel Lilian, née Boole, 1864-1960
- Vreeland, Diana, 1903-1989
- Vámbéry, Ármin/Arminius (Hermann Vamberger), 1832-1913
- Waalsh, James, fl.1920-1947
- Wachholtz, Friedrich Lucwig von
- Wack, Mary
- Waddell, Helen, 1889-1965
- Waddell, Helen Jane (1889–1965)
- Waddell, Helen Jane, 1889-1965
- Waddell, Helen Jane, 1889–1965
- Waddell, Mickey, 1919-2007
- Waddell, Rutherford (ca.1850-1932)
- Waddell, Rutherford, 1850?-1932
- Waddell, Samuel John, 1878-1967
- Waddell, William Charles, 1798-1878
- Waddell family
- Wadden, William, 1904-1954
- Waddicor, Christine Hurlstone (née Jackson), fl.1933-1990
- Wadding, Luke, 1588-1657
- Wadding, Luke, O.F.M., 1588-1657
- Wadding, Luke, OFM, 1588-1657
- Wadding, Luke, OFM, 1588-1657 ; Harold, Francis
- Wadding, Luke, OFM, 1588-1657,
- Wadding, Michael, 1587-1644
- Wadding, Michael, 1591-1644
- Wadding, Peter, 1581?-1644
- Wadding, Thomas, fl.1587-1596
- Wadding, Walter fl.1587-88
- Waddinge, Luke, 1630-
- Wadding family
- Waddington, Victor
- Waddy family
- Wade, Bernard, d.1809
- Wade, George, 1673-1748
- Wade, Walter, c.1740–1825
- Wade family
- Wagg, Phyllis C.
- Wagg, Phyllis Maclnnes
- Wagner, Adolphe, 1835-1917
- Wagner, Heinrich, 1923-1988
- Wagner, Heinrich Hans, 1923-1988
- Wagner, Wilhelm Richard, 1813-1883
- Wailes, Bernard, 1934-2012
- Waite, Thomas, 1718-1780
- Waithman family
- Wakefield, Francis, 1821-1896
- Wakely family
- Wakley, Thomas, 1795-1862
- Waldef, c.1095-1159
- Waldergrave, Henrietta, d. 1730
- Waldron, Dalmatius O.P., d. 1995
- Waldron, Jack
- Waldron, Jim, d. c.1996
- Waldron, John, fl. 1920
- Waldron, John A., d.2016
- Waldron, Kieran, 1936 -
- Waldron, Laurence, d. 1924
- Waldron, Mark, d. 1997
- Waldron, Mark, GAA member, d. 1997
- Waldron, Mary, d. 1857
- Waldron, Michael F., 1876-1954
- Waldron, Odilo, d. 1988
- Waldron, Paul, d. 1870
- Waldron, Thomas, teacher, fl. 1830-1850
- Waldron, William
- Waldron family
- Wale, Blanche (née Whately), c.1829-1860
- Wale, Henrietta (née Whately), 1826-1908
- Walesa, Lech
- Walker, Alexander, 1930-2003
- Walker, Alice, d. 1920
- Walker, Barrington
- Walker, Brian, 1947-
- Walker, Charles
- Walker, David, 1785-1830
- Walker, Dorothy, 1929-2002
- Walker, George, 1643×8–1690
- Walker, George. 1643×8-1690
- Walker, John, 1888-1954
- Walker, John, fl.1834-1854
- Walker, John James, c.1893-1914
- Walker, Joseph Cooper, (c.1762-1810)
- Walker, Joseph Cooper, 1761-1810
- Walker, Joseph Cooper, 1761-1810 ; Fraser, James ; Henry, Mitchell, MP
- Walker, Joseph Cooper, c.1762-1810
- Walker, Matthew, 1880-1920
- Walker, Michael, 1885-1971
- Walker, Roger Chambers, 1806-1854
- Walker, Samuel Abraham, 1846-1936
- Walker, Sarah
- Walker, Simon
- Walker, Thomas, 1917?-1942
- Walker, Thomas, fl.1600
- Walker, William
- Walker, William, 1870-1918
- Walker, William, 1871-1918
- Walker, William, 1871–1918
- Walker family
- Wall, Christopher, 1898?-1918
- Wall, Christopher, d.1917
- Wall, Gerard, 1917-2003
- Wall, John, 1840-1933
- Wall, Joseph, 1737-1802
- Wall, Patrick, c.1778-1834
- Wall, Richard, 1694-1777
- Wall, Richard, 1694-1778
- Wall, William, 1859-1899
- Wall, William, 1900-1956
- Wallace, Arthur, fl. 1780-1800
- Wallace, Colin, fl. 1961-1990
- Wallace, Frances, d.2018
- Wallace, Hugh 1728-1787
- Wallace, John Joe, d.2019
- Wallace, Nora
- Wallace, Pat
- Wallace, Patrick
- Wallace, Richard, Sir, 1818-1890
- Wallace, Robert, 1697-1771
- Wallace, Robert H., 1860-1929
- Wallace, Robert Hugh
- Wallace, Sheila
- Wallace, William, 1791-1837
- Wallace, William Vincent, 1812-1865
- Wallenstein, Albrecht von, 1583-1634
- Wallenstein, Albrecht von, 1583-1634,
- Waller, Hardress, 1604–1666
- Waller, James Hardress de Warrenne, 1884-1968
- Waller, Robert, fl. 1842
- Waller, Thomas, d.1843 ; Vereker, Harriet, d.1843
- Waller, William, Sir, 1597?-1668
- Waller family
- Wall family
- Wallington, Nehemiah, 1598–1658
- Wallis, Duchess of Windsor, 1896-1986
- Wallis, Patrick 'Staker', d. 1798
- Wallis family
- Wallplate, Joseph, fl. 1847
- Walls, Sean
- Wall y Porcell, Eduardo, 1730/31-1793
- Walpole, Horace, 1717–1797
- Walpole, Horatio, 4th earl of Orford, 1717-1797
- Walpole, Robert, Sir, 1st earl of Orford, 1676-1745
- Walpole family
- Walsh, Alison
- Walsh, Andrew, fl. 1856
- Walsh, Anthony, c.1683-1737
- Walsh, Antoine Joseph Philippe de, 1744-1817
- Walsh, Billy, 1918-1938
- Walsh, Brendan
- Walsh, Brendan M., 1940-2016
- Walsh, Bridget, 1888-1955
- Walsh, Christy, Fr, 1917-1991
- Walsh, Christy, Revd, 1917-1991
- Walsh, Cornelius (‘Con’), 1881–1961
- Walsh, D. P., fl. 1916-1919
- Walsh, Edward, 1805-1850
- Walsh, Edward, d. 1872
- Walsh, Edward, fl.1907-1945
- Walsh, Edward M., b.1939
- Walsh, Eileen O'Mara, 1941-
- Walsh, Francis Patrick, 1864-1939
- Walsh, Frank
- Walsh, Gabriel
- Walsh, George
- Walsh, Henry, d.1847
- Walsh, James, c.1841-1863
- Walsh, James Joseph, 1880-1948
- Walsh, James Joseph, 1905-1992
- Walsh, Jimmy, 1903-
- Walsh, John, 1786-1847
- Walsh, John, 1915-1999
- Walsh, John, fl. c.1788-1879
- Walsh, John, Fr., 1921-1964
- Walsh, John, Revd, 1800-1835
- Walsh, John, Revd, 1921-1964
- Walsh, John Baptist, 1750-1825
- Walsh, John Joseph, 1880-1948
- Walsh, John M., fl. 1902
- Walsh, John McWalter, fl. 1630
- Walsh, Joseph, b. 1979
- Walsh, Joseph M., b.1943
- Walsh, Larry, d.2013
- Walsh, Louis, 1952-
- Walsh, Louis J., 1880-1942
- Walsh, Louis Joseph, 1880 – 1942
- Walsh, Louis Joseph, 1880-1942
- Walsh, Louis Joseph, 1880–1942
- Walsh, Martin, fl. 1878
- Walsh, Maureen, d.2009
- Walsh, Maurice, 1879-1964
- Walsh, Michael, 1883-1971
- Walsh, Michael, 1929-2007
- Walsh, Michael, fl. 1800-1840
- Walsh, Micheline Kerney, 1919-1997
- Walsh, Nellie, 1913-
- Walsh, Nicholas, 1547-1585
- Walsh, Nicholas, Sir, d. 1615
- Walsh, Ollie, 1937-1996
- Walsh, Pat, 1932-
- Walsh, Patrick, 1885-1927
- Walsh, Patrick, d. 1882
- Walsh, Paul, 1885-1941
- Walsh, Paul, Father, 1885-1941
- Walsh, Paul, Revd, 1885-1941
- Walsh, Peter, O.F.M., 1618?-1688
- Walsh, Peter, OFM, 1618?-1688
- Walsh, Richard, bishop of Cork, d. 1763
- Walsh, Robert, 1784-1859
- Walsh, Robert, 1840?-
- Walsh, Robert, bishop, d. 1821
- Walsh, Rodolfo, 1927-
- Walsh, Ruby
- Walsh, Róisín, 1889-1949
- Walsh, Samuel, b. 1951
- Walsh, T. J., 1911-1988
- Walsh, Thomas, archbishop, d.1654
- Walsh, Thomas, bishop, 1580-1654
- Walsh, Thomas F., fl. 1930-2000
- Walsh, Tom,1914-1988
- Walsh, Tom, d. 1922
- Walsh, Walter, d.2012
- Walsh, Wendy, b.1915
- Walsh, William, 1804-1858
- Walsh, William, 1841-1921
- Walsh, William, d. 1920
- Walsh, William J., 1841-1921
- Walsh, William Joseph, archbishop, 1841-1921
- Walsh, William Joseph, archbishop of Dublin, 1841-1921
- Walsh, William Joseph, bishop, 1841-1921
- Walsh, William Mason, Fr., 1842-1908
- Walsh, Willie, bishop of Limerick, 1935-
- Walsh, Wiolliam, 1828-1868
- Walshe, Alicia (Mother Catherine), 1773-1854
- Walshe, Edward
- Walshe, Joseph, 1886-
- Walshe, Joseph, 1886-1956
- Walshe, Joseph, 1886-1956,
- Walshe, Joseph, fl. 1938
- Walshe, Louis, fl. 1919
- Walshe family
- Walsh family
- Walsingham, Francis, Sir, 1530?-1590
- Walsingham, Sir Francis, 1532–1590
- Walsingham, Thomas, c.1340-c.1422
- Walter (Butler), Theobald, 1150?-1206?
- Walter, John
- Walter, John, 1948-
- Walter, Nehemiah (b. 1663)
- Walter, of Coventry, fl. 1293
- Walter, Richard, 1717–1785
- Walter Map, fl. 1200
- Walters, Jane, 1792-1881
- Walters, John Tudor, Sir, 1866-1933
- Walters family
- Walton, Ernest Thomas Sinton, 1903-1995
- Walton, Ernest Thomas Sinton, 1903-1995
- Walton, Ernest Thomas Sinton, 1903-1995,
- Walton, Ernest Thomas Sinton, 1903–1995
- Walton, J. fl. 1735
- Walton, John, archbishop of Dublin, c.1415–c.1490
- Walton, Rosemary, 1949-2009
- Wandesford, Christopher, 1592-1640
- Wandesforde, (Susan Frances) Anne, Lady, fl.1769-1793
- Wandesforde, Charles Harward, Butler, Clarke, Southwell, fl.1830-1855
- Wandesforde, Christopher
- Wandesforde family
- Wanley, Humfrey, 1672-1726
- Warbeck, Perkin, c.1474-1499
- Warburton, Charles Mongan, d. 1826
- Warburton family
- Ward, Arabella, Lady (née Crosbie), 1757-1813
- Ward, Hugh, O.F.M., 1590?-1635
- Ward, Hugh, O.F.M., 1590?-1635 ; Hosé, Oilbhearus
- Ward, Hugh, OFM, 1590?-1635
- Ward, Hugh Paddy Óg, 1910-
- Ward, James, d. 1924
- Ward, Joe, 1909-2000
- Ward, John, 1832-1912
- Ward, Joseph, VC, c.1834-1872
- Ward, Marcus (1807–1847)
- Ward, Mary, 1827-1869
- Ward, Mary, d.2013
- Ward, Maurice, 'Bo Bo', 1946-2002
- Ward, Maxwell Richard Crosbie, 6th Viscount Bangor of Castleward, d. 1950
- Ward, Michael, c.1680-c.1760s
- Ward, Oliver, d.2017
- Ward, Patrick T., 1930-2022
- Ward, Robert, 1825-1904
- Ward, Samuel Ringgold 1817-1866
- Ward, Wilfrid Philip, 1856-1916
- Ward, William Humble, 2nd earl of Dudley, 1867-1932
- Warde, Mary Francis Xavier, 1810-1884
- Warde, Michael, 1949-2014
- Wardell, George Vaughan, 1840-1879
- Wardell, John Henry, 1878-1957
- Warden, David Bailie, 1772-1845
- Ward family
- Ward family (of Belfast)
- Ward family, fl. 1850
- Wardrop, Ken, 1973-
- Ware, Hugh, 1772-1846
- Ware, Hugh, Colonel, 1776-1846
- Ware, Isaac, 1704-1766
- Ware, James, Sir, 1594-1666
- Ware, Robert, 1639-1696
- Ware, Sir James, 1594–1666
- Ware-Harris, Elizabeth, fl. 1716
- Warin fitz Gerald, c.1167-1215x16
- Waring, Jane, fl. 1745
- Waring, Samuel, fl. 1688
- Waring family
- Waring Maxwell, John Charles Frederick, c.1752-1802
- Warke, Robert Alexander, bishop, 1930-
- Warlock, Peter
- Warner, William Lloyd, 1898-1970
- Warnock, John Edmund, 1887-1971
- Warren, Dermot Frederick William, 1898-1945
- Warren, Harry, d. 2006
- Warren, James, fl. 1721
- Warren, John, fl. 1788
- Warren, Michael, b. 1950
- Warren, Michael, b.1950
- Warren, Peter, fl. 1691
- Warren, Richard, 1705-1775
- Warren, Richard Benson, Sergeant at Law, fl. 1850-52
- Warren, Robert, 1829-1915
- Warren, Wilfred Lewis, 1929-
- Warren family
- Warter, Nicholas, bishop, d. 1448
- Washington, Booker Taliaferro, 1856-1915
- Washington, George, 1732-1799
- Wasson family
- Watchorn, Robert, 1858-1944
- Watchorn family
- Waterhouse, Charles, fl. 1611-1641
- Waterhouse, Gilbert, 1888-1977
- Waterhouse, Sir Edward, 1535-1591
- Waterlow, Ernest Albert, 1850-1919
- Waterman, Dudley Mark, 1917-1979
- Waters, Edward, fl.1707-1721
- Waters, George, fl.1793-1814
- Waters, John, 1955-
- Waters, Margaret, 1910-2015
- Waters, Maureen, 1939-
- Waters, Richard, c.1867-1916
- Waters, Samuel, 1846-1936
- Waters, Samuel Abraham Walker, 1846-1936
- Waters, Thomas James, 1842-1898
- Waters family
- Watson, -, nurseryman
- Watson, Alexander, Dr., 1825-1902
- Watson, Charlotte, 1824-
- Watson, David
- Watson, Edward John Macartney, 1872-1947
- Watson, George J.B., 1942-2009
- Watson, Gilbert, 1896-1916
- Watson, Gilbert Donaldson, 1896-1916
- Watson, James, 1860-1931
- Watson, Jonas, Colonel
- Watson, Joshua Rowley, RN, 1772-1818
- Watson, Mary, b. c 1800, d. 1871
- Watson, Matthew
- Watson, Samuel
- Watson, Samuel, 1818- c.1867
- Watson, Thomas, 1st marquis of Rockingham, d. 1750
- Watson, Thomas, d. 1723
- Watson, William, 1804-1883
- Watson, William, 1835-1912
- Watson-Wentworth, Charles, 2nd Marquess of Rockingham, (1730–1782)
- Watson-Wentworth, Charles, 2nd marquess of Rockingham, 1730-1782
- Watson family
- Watt, George Frederic, 1817-1904
- Watt, William Fraser, 1893-1973
- Watters, Henry, fl. 1788-1855
- Watters family
- Watt family
- Watts, John Cecil, fl. 1930-1980
- Watts, Martha, b. c.1913
- Watts, Nicholas, fl. 1699
- Watts, William, 1930-2010
- Wauchop, Robert, bishop, d. 1551
- Waugh, Evelyn
- Wayland, John Smithwick, 1874-1954
- Wayne, Anthony (1745-1796)
- Wayne, Anthony, fl. 1776
- Wayne, John, 1907-1979
- Weafer, Jack, d. 1916
- Weafer, Patrick, 1890-1975
- Weale, James, 1787-1838
- Wear, Sylvanus, d.1920
- Weatherup, Anne (néé Evans), 1935-2013
- Weatherup family
- Weaver, John, d.1685
- Weaver, Thomas, 1773-1855
- Webb, Alfred (1834–1908)
- Webb, Alfred, 1834-1908
- Webb, Alfred, 1854-1908
- Webb, David Allardyce, 1912-1994
- Webb, Duncan, d.1958
- Webb, George, 1581-1642
- Webb, Isabella, 1877-1946
- Webb, Richard Davis (1805–1872)
- Webb, Richard Davis, 1805-1872
- Webb, William R., 1939-1945
- Weber, Ferdinand, 1715-1784
- Weber, Max, 1864-1920
- Weber-Drohl, Ernst, 1879-post-1947
- Webster, Kate, 1849-1879
- Weddall, Emily, 1867-1952
- Weddall, Emily M., 1863-1924
- Wedgwood, Cicely Veronica, Dame, 1910-1997
- Wedgwood, Cicely Veronica, Dame, 1910-1997; Wentworth, Thomas, 1st Earl of Strafford, 1593-1641
- Wedgwood, Josiah, 1730-1795
- Weekes, Cecil, d.2012
- Weekes, Mildred, d.2018
- Weerth, Georg, 1822-1856 ; Burns, Mary, 1823-1863 ; Engels, Friedrich, 1820-1895 ; O'Connell, Daniel, 1775-1847
- Weingreen, Jacob, 1908-1995
- Weir, Deirdre Monica, 1943-
- Weir, Hugh, 1934-
- Weir, John
- Weir family
- Weisweiler, Josef, 1900-1987
- Weisz, Howard
- Wejchert, Andrzej, b. 1937
- Welch, Robert, d. 1936
- Welch, Robert John, 1859-1936
- Weld, Isaac, 1774-1856
- Welde, William Charles Kingsbury, 1852-1899
- Weld Hartstonge, Matthew, 1774-1834
- Weldon, George, Captain, 1866-1898
- Weldon, Jack, fl. 1954
- Weldon, Robert, 1835-1914
- Weldon family
- Wellesley, Arthur, 1st duke of Wellington, 1769-1852
- Wellesley, Dorothy Violet, [née Ashton], duchess of Wellington, 1889–1956
- Wellesley, Richard, marquis Wellesley, 1760-1842
- Wellesley, Walter, bishop, d. 1539
- Wellesley, William Pole Tylney Long-, 4th earl of Mornington and 2nd baron Maryborough, 1788-1857
- Wellesley family
- Wellesley family, earls of Mornington and viscounts Wellesley
- Wellesley [formerly Wesley], Arthur, 1st duke of Wellington, 1769–1852
- Welsh, Duncan, c.1806-1893
- Welsh, Mary, c.1740-1826
- Welsh, Michael
- Welsh, Peter, 1830-1864
- Welsh family
- Wemys, John Otway, 1826-1896
- Wemyss, David, Lord Elcho, 1721-1787
- Wemyss, Patrick
- Wemyss family
- Wendel, Saint, 544-617
- Wendel, Saint, 544-617,
- Wendover, Roger de, d. 1236
- Wenger, Peter
- Wentworth, Thomas, 1st Earl of Strafford, 1593 -1641
- Wentworth, Thomas, 1st earl of Strafford, 1593-1641
- Wentworth, Thomas, 1st Earl of Strafford, 1593-1641; Keating, Gerald, fl.1634
- Wentworth-Fitzwilliam, William, 4th Earl Fitzwilliam, 1748-1833
- Werner, Louis, 1856-1941
- Wernham, Richard Bruce, 1906-
- Wesley, Charles, 1707-1788
- Wesley, John, 1703-1791
- Wesley, John, 1703–1791
- West, Benjamin, 1728-1820
- West, Benjamin, 1738-1820
- West, Margaret Irwin, b. c.194?
- West, Revd, fl. 1846
- West, Richard, lord chancellor of Ireland, c.1691-1726
- West, Robert, c.1720/30-1790
- West, Robert, d. 1790
- Westby family
- Westcott-Pitt, Arthur, 1899-1979
- Westlake, Nathaniel Hubert John, 1833-1921
- Weston, Paddy, 1927-
- Weston, Richard, fl. 1608
- Weston, William, printer
- Westropp, C. Roberts, Revd.
- Westropp, George O'Callaghan, 1896-1944
- Westropp, Hodder Michael, 1820-1884
- Westropp, Thomas Johnson, 1860-1922
- Westropp, Thomas Johnston, 1860-1922
- Westropp family
- Wettenhall, Edward, bishop of Kilmore, d. 1714
- Weyland, Thomas, Sir, c.1230-1298
- Weyman, Stanley John, 1855-1928
- Whaley, Richard, 1663-1725
- Whaley, Richard Chapel (Burn-chapel), 1700-1769
- Whaley, Richard Chappell, 1700-1769
- Whaley, Robert, fl. 1852
- Whaley, Thomas (Buck), 1766-1800
- Whaley, Thomas, 1766-1800
- Wharton, George, Sir, d. 1681
- Wharton, Gerald
- Wharton, Henry, 1657-1689
- Wharton, Thomas, 1st marquess of Wharton, 1st marquess of Malmesbury, and 1st marquess of Catherlough, 1648-1715
- Whately, Eilzabeth Jane, 1822-1893
- Whately, Elizabeth (née Pope), c.1795-1860
- Whately, Richard, bishop, 1787-1863
- Whatman, JAmes, 1813-1887
- Wheatley, Anthony, c.1886-1915
- Wheatley, Francis, 1747-1801
- Wheatley, Francis 1747-1801
- Wheatley, John, 1869-1930
- Wheeler, Anna Doyle, 1785-c.1850
- Wheeler, Anna Doyle, 1785?-1848?
- Wheeler, Henry A., 1916-1993
- Wheeler, Jonas, bishop, fl.1622
- Wheeler, Jonas, bishop of Ossory, 1543-1640
- Wheeler, Jonas, bishop of Ossory, pre-1594-1640
- Wheeler-Cuffe, Charles Denny, Sir, 1832-1915
- Wheeler-Cuffe, Charlotte, Lady, 1867-1967
- Wheelock, Catherine, c.1750-c.1805
- Whelan, Aidan, 1885-1954
- Whelan, Edward , fl 1850-1860
- Whelan, John 'Rocky', 1813-1855
- Whelan, John, 1900-1921
- Whelan, Leo, 1892-1956
- Whelan, Patrick, 1878-1916
- Whelan, Patrick, c.1882-1916
- Whelan, Peter, 1802-1870
- Whelan, Peter, 1831-1900
- Whelan, Peter, Fr., 1802-1871
- Whelan, Thomas, d.1921
- Whelan family
- Whelton, Barthy, 1923-2000
- Whelton, Barthy, 1923-?2000
- Whelton, Bridie
- Whelton, John, 1927-2008
- Whethamstede, John, d. 1465
- Whewell, William, 1794-1866
- Whilde, Tony, 1947-1995
- Whistler, James Abbott McNeill, 1834-1903
- Whitaker, T.K. (Thomas Kenneth), 1916-2017
- Whitaker, T. K., 1916-2017
- Whitaker, Thomas Kenneth (Ken), b.1916
- Whitaker, Thomas Kenneth, 1916-
- Whitaker, Thomas Kenneth, 1916-2017
- Whitbread, J. W.
- White, Agnes, 1921-
- White, Anne, d.1880
- White, Aubrey, 1845-1915
- White, Barrington Raymond, 1934-
- White, Cora (A.B.F.), 1897-1952
- White, David, 1878-post 1919
- White, Eric, c. 1919-2008
- White, Florence D., fl. 1927
- White, Geoffrey, fl.1554
- White, Geoffrey Henllan, 1873-
- White, Harry, 1958-
- White, Henry V., 1848-1934
- White, Jack
- White, James, 1913-
- White, James, fl. 1960-70
- White, James Grove, 1852-1938
- White, James Grove, c.1789-1863
- White, James Robert ('Jack'), 1879-1946
- White, James Robert (Jack), 1879-1946
- White, James Robert, 1879-1946
- White, Jeremiah, fl. 1842
- White, John, 1785-1857
- White, John, c. 1540-c. 1593
- White, John, c.1756-1832
- White, John Davis, 1820-1893
- White, Katherine, fl. 1634
- White, Luke, 1740-1824
- White, Luke, d.1854
- White, Mary, Countess of Bantry (née O’Brien), 1805-1853 ; White, Richard, 2nd Earl of Bantry, 1800-1868
- White, Maunsel, 1783-1863
- White, Michael, 1915-2008
- White, Michael, fl. 1839
- White, Nicholas, d. 1593
- White, Paddy, 1922-2011
- White, Paddy, fl. 1941-1997
- White, Patrick, 1820-1893
- White, Patrick, d. 1921
- White, Paul, 1683-1730
- White, Peter, c.1530-
- White, Peter, c.1530-post-1570
- White, Peter, fl. 1551-1570
- White, Philip L.
- White, Richard, 2nd earl of Bantry, 1800-1868
- White, Richard, 2nd Earl of Bantry, 1800-1868 ; White, Mary, Countess of Bantry (née O’Brien), 1805-1853
- White, Richard, 1800–1868, 2nd earl of Bantry
- White, Rowland, d. 1572
- White, Samuel, d.1854
- White, Stephen, 1574-1646/7
- White, Stephen M. (1853-1901)
- White, Stephen Mallory (1853-1901)
- White, T.H.
- White, Terence Hanbury, d. 1964
- White, Thomas, fl.1541
- White, Vincent, fl.1918
- White, William, 1744-1790
- White, William, 1825-1900
- White-Spunner, Letitia Hannah Damer (née Sandys), 1840-1911
- White-Spunner family
- White family
- White family, earls of Bantry
- Whitefield, George, 1714-1770
- Whitefield, George [also Whitfield], 1714-1770
- Whitehead, A(lfred) N(orth) (1861-1947)
- Whitehead, Robert, 1823-1905
- Whitehill, Julia, fl. 1825-1833
- Whitehill, William, 1793-
- Whitehouse, Thomas, d. 1754
- Whitelaw, James, 1749-1813
- Whitelaw, William, 1918 - 1999
- Whitelock, Dorothy, 1901-1982
- Whiteside, James, 1804-1876
- Whitestone, William, fl. 1777-1778
- Whiting Mac Aoidh, Micí,
- Whitla, Sir William, 1851–1933
- Whitla, William, Sir, d. 1933
- Whitley, William Thomas, 1861-1947
- Whitman, Walt, 1819-1892
- Whitney, Patrick J., 1894-1942
- Whittaker, Edmund Taylor, 1873-1956
- Whittaker, Edmund Taylor, Sir, 1873-1956
- Whittle, Nickey, fl. 1918
- Whittley family
- Whitton, John, fl. 1790-1791
- Whitty, Edward, 1827-1860
- Whitty, James Calasanctius, 1848-1930
- Whitty, M. J., 1798-1873
- Whitty, Michael, 1795-1873
- Whitty, Richard, 1546-
- Whitty, Vincent, Sr., fl. 1868
- Whitworth family
- Whood, Isaac, 1688-1752
- Whooley, Tadhg, b. c.1922
- Whooley, Timsie, d.1947
- Whyte, Edward J., d. 2001
- Whyte, Helina, fl. 1595
- Whyte, Ian,
- Whyte, Jenny
- Whyte, John, Sir
- Whyte, Laurence, 1680-1752
- Whyte, Robert, fl. 1847
- Whyte, Samuel, 1733-1811
- Whyte, Thomas, 1888-1961
- Whyte family
- Wickam family
- Wickham, Jim, c.1927-2007
- Wickham, Thomas, d. 1857
- Wickham, William, 1761-1840
- Wicks, Arthur 'Neal', 1893-1916
- Widgery, John Passmore, Baron Widgery, 1911–1981
- Wiggins, Kenneth, archaeologist
- Wight, Joshua, 1678-1783
- Wightman, Henderson, 1791-1823
- Wightman, James, d.1844
- Wigram, Robert, 1744-1830
- Wihtred, king of Kent, d. 725
- Wilberforce, William, 1759-1833 ; Dowling, Thomas, fl.1791-1793 ; Kimber, John, fl.1791-1793
- Wilbraham, Roger, Sir, d. 1616
- Wilde, Constance, 1858-1898
- Wilde, Emily, 1847?-1871
- Wilde, Emily, d. 1871
- Wilde, Isola Francesca Emily, 1857-1867
- Wilde, Jane Francesca Agnes, Lady, 'Speranza', 1821-1896
- Wilde, Jane Francesca Agnes, Lady, 'Speranza', 1821?-1896
- Wilde, Mary, d. 1871
- Wilde, Oscar (1854-1900)
- Wilde, Oscar, 1854-1900
- Wilde, Oscar Fingal O'Flahertie, 1854-1900
- Wilde, Oscar Fingal O'Flahertie, 1854-1900 ; Shaw, George Bernard, 1856-1950 ; Yeats, William Butler, 1865-1939
- Wilde, Oscar O'Flahertie Wills, 1854-1900
- Wilde, W. R. (William Robert), 1815-1876
- Wilde, William (Willie), 1852-1899
- Wilde, William Robert Wills, Sir, 1815-1876
- Wilde, William Robert Wills, Sir, 1815-1876,
- Wilde family
- Wilderspin, Samuel, 1791-1866
- Wildman family
- Wildridge family
- Wilfrid, bishop and saint, c.634-709x10
- Wilhelm II (Friedrich Wilhelm Viktor Albert), Emperor of Germany, 1859-1941
- Wilkes, John, 1725-1797
- Wilkie, David, Sir, 1785-1841
- Wilkins, Mary, fl. 1817
- Wilkinson, Ellen
- Wilkinson, Ellen Cicely, 1891-1947
- Wilkinson, George, 1814-1890
- Wilkinson, George, 1814?-1890
- Wilkinson, James
- Wilkinson, June (née Forrest) 1953-2023
- Wilkinson, Neville, Sir, 1869-1940
- Wilkinson family
- Willard, Jess, 1881-1968
- Willcocks, Joseph, 1773-1814
- Willcocks, Richard, fl. 1825
- Willcocks, Richard, Sir, 1768–1834
- Willcut, family
- Willes, Edward, 1704-1768
- Willes, Edward, 1704-1769
- Willes, James Shaw, 1814-1872
- William, of Jumièges, d. c.1090
- William, of Malmesbury, 1090x6-1143?
- William, of Newburgh, b. 1135x6, d. in or after 1198
- William Coppin, 1805 - 1895
- William de Braose, d. 1211
- William I, king, 1027x8-1087
- William II, king, 1056x60-1100
- William III, King and Prince of Orange, 1650-1702
- William III, King and Prince of Orange, 1650-1702 ; James II, King, 1633-1701
- William IV, king, 1765-1837
- William Marshal, 1146/7-1219
- William Marshal, earl of Pembroke and Striguil, 1146?-1219
- William of Canterbury, biographer
- William of Kilkenny, Bishop of Ely, d. 1256
- William of Malmesbury, 1080-1143
- William of Stranton, fl. 1406-1409
- Williams, Alexander, 1846-1930
- Williams, Alexander, RHA, 1846-1930
- Williams, Arthur Frederic Basil, 1867-1950
- Williams, Brian
- Williams, Charles Henry, c.1801-1869
- Williams, Charles Wye, 1779x80-1866
- Williams, Daniel E., b.1848
- Williams, Daniel Edmond, 1928-2007
- Williams, Edward (Iolo Morganwg), 1747-1826
- Williams, Edward, 1848-1905
- Williams, Glanmor, Sir, 1920-2005
- Williams, Griffith, bishop of Ossory, b. c 1587, d. 1672
- Williams, Griffith, c.1589-1672
- Williams, Ifor, Sir, 1881-1965
- Williams, Jack, 1885-1965
- Williams, Jane (née Terry), 1771-1845
- Williams, Jane (Ysgafell), 1806-1885
- Williams, John, archbishop, 1582-1650
- Williams, John, bishop, 1582-1650
- Williams, John Ellis Caerwyn, 1912-1999
- Williams, John Ellis Caerwyn, 1912-1999 ; Maelgwn Gwynedd (d. c.550)
- Williams, Maria Jane, d. 1876
- Williams, May, 1896-1981
- Williams, Melvin G.
- Williams, Nicholas J. A.
- Williams, R.W., d.1921
- Williams, R.W.,d.1921
- Williams, Richard D'Alton, 1822-1862
- Williams, Richard Valentine, 1877-1947
- Williams, T. Desmond, 1921-1987
- Williams, Tennessee, 1911-1983
- Williams, Tom, d. 1942
- Williams-Ellis, Clough, 1883-1978
- Williams family
- Williamson, Caesar, fl. 1640-1660
- Williamson, David, 1720-1776
- Williamson, Hugh (1735-1819)
- Williamson, James, 1756-1832
- Williamson family
- Willibald, Saint, c.700-787?
- Willibrord, Saint, 657x8-739
- Willis, Humphrey, fl.1592-93
- Willis, Thomas, 1747-1825
- Willis, Thomas, fl. 1845
- Willis family, fl. 1800-1900
- Willoughby, Charles, c.1630-1694
- Willoughby, Jane,
- Willoughby, Nicholas, c.1626-c.1669
- Willoughby family
- Wills, Clair
- Wills, Mary (née Sandford, later Wills-Sandford 1789-1851
- Wills, William, fl. 1936-1739
- Wills, William John, 1834-1861
- Wills, William Robert, c.1779-1859
- Wilmot, Catherine
- Wilmot, Catherine, c.1773-1824
- Wilmot, Katherine, 1773-1824
- Wilmot, Katherine, 1773-1824,
- Wilmot, Martha, 1775-1873
- Wilmot, Martha, 1775-1873,
- Wilmot, Robert, Sir, fl. 1740-61
- Wilmot-Horton, Robert John, Sir, 1784-1841
- Wilson, A.W.
- Wilson, Andrew, c.1650-1725
- Wilson, Andrew Patrick, b. 1886
- Wilson, Ann, d. 1961
- Wilson, Brian, 1924-
- Wilson, Charles, 1756-1808
- Wilson, Chris,
- Wilson, Corbett, fl. 1912
- Wilson, David, 1873-1935
- Wilson, Edward
- Wilson, Ernest Henry, 1876-1930
- Wilson, Florence Mary, 1874-1946
- Wilson, Gordon, 1927-1995
- Wilson, Gregg, 1865-1951
- Wilson, Guy Livingstone, 1885-1962
- Wilson, Harold, 1916-1995
- Wilson, Henry, 1838?-1877
- Wilson, Henry Hughes, 1864-1922
- Wilson, Henry Hughes, Sir, 1864-1922
- Wilson, Henry Maitland, 1st baron Wilson, 1881-1964
- Wilson, Hugh Alexander, 1885-1947
- Wilson, James, 1922-2005
- Wilson, James, d. 1860
- Wilson, James, fl. 1854
- Wilson, James, fl. 1876
- Wilson, James Glen, 1824-1863
- Wilson, James Glen, 1827-1863
- Wilson, James Harold, baron Wilson of Rievaulx, 1916-1995
- Wilson, James Harold ,Baron Wilson of Rievaulx, 1916-1995; Rees, Merlyn, 1920-2006; King, Frank Douglas, General, 1919-1998
- Wilson, John, c.1667-1733
- Wilson, Joseph, d.1809
- Wilson, Joseph, fl.1858-1888
- Wilson, Katherine Anne Gifford, 1875-1957
- Wilson, Kathleen Curtis
- Wilson, Lorton Alexander, 1879-1958
- Wilson, Marie, d. 1987
- Wilson, Peter, 1875-1916
- Wilson, Philip B., d. 1998
- Wilson, Rev., fl. 1896-1918
- Wilson, Revd, fl. 1896-1918
- Wilson, Richard, 1712x13-1782
- Wilson, Robert McLiam, b.1964
- Wilson, Robert McLiam, fl. 1996
- Wilson, Samuel, Sir
- Wilson, Thomas, 1758-1824
- Wilson, Thomas, 1789-1857
- Wilson, Thomas, fl.1837-1857
- Wilson, Thomas Woodrow, 1856-1924
- Wilson, William, 1900-1986
- Wilson, William, fl. 1909
- Wilson, William E., 1851-1908
- Wilson-Lynch family
- Wilson family
- Wiltshire, Elinor, b. 1918
- Windebank, Francis, Sir, bap. 1582, d. 1646
- Windele, John, 1801-1863
- Windele, John, 1801-1865
- Windisch, Ernst, 1844-1918
- Windisch, Wilhelm Oscar Ernst, 1844–1918
- Windle, Bertram Coghill Alan, Sir, 1858-1929
- Windle, Sir Bertram Alan Coghill, 1858–1929
- Windsor, William, Baron Windsor, 1322x8-1384
- Winefride, Saint, supp. fl. 600-700
- Wingfield, Lilah
- Wingfield, Richard, 4th Viscount Powerscourt, 1762-1809
- Wingfield, Sheila
- Wingfield, Sheila, 1906-1992
- Wingfield family
- Wingfield family, earls of Powerscourt
- Winifred, Saint, d.660
- Winn, James d. 1799
- Winniatt, William, d.1741
- Winning, Robert, c.1791-1861
- Winsloe, Katherine Aurora (née Kirkpatrick), (Noor-un-Nissa Sahib Begum), 1802-1889
- Winter, Samuel, Provost
- Winter, Sir Ormonde de l'Épée, 1875–1962
- Winter family
- Winthrop, John, 1588-1649
- Winthrop family
- Wisdom, John Oulton, 1908-
- Wise family
- Wiseman, Nicholas Patrick Stephen, cardinal, 1802-1865
- Wiseman family
- Witherington family
- Witherow, Thomas, 1824-1890
- Withers, Robert A, c 1890- 1980
- Withrington family
- Wittgenstein, Ludwig, 1889-1951
- Wittgenstein, Ludwig Josef Johann, 1889 - 1951
- Wittgenstein, Ludwig Josef Johann, 1889-1951
- Wittig, Monique, 1935-2003
- Wodehouse, John, 1st earl of Kimberley, 1826-1902
- Woffington, Margaret, fl. 1700-1775
- Wogan, Charles, c.1685-1754
- Wogan, Charles, ‘the Chevalier Wogan’, 1698?–1757?
- Wogan, Terry, b.1938
- Wogan-Browne, John Hubert, 1896-1922
- Wogan-Browne, Judith Clementina 1750/6-1848
- Wogan-Browne family
- Wogan family
- Wojtyla, Karol, Pope John Paul II, 1920-2005
- Wolfe, Charles, poet, 1791-1823
- Wolfe, David, 1528-c.1578
- Wolfe, David, 1528–c.1578
- Wolfe, David, b. 1528, d. c 1579
- Wolfe, George, fl. 1941
- Wolfe, James, Major-General, 1722-1759
- Wolfe, Jasper Travers, 1872-1952
- Wolfe, John Charles, d. 1871
- Wolfe, John Charles, d. 1871.
- Wolfe, Rachel Wood, 1845-1941
- Wolfe, Sarah “Sally”, 1885-1975
- Wolfe, William Francis. c.1884-1977
- Wolfe family
- Wolff, Robert Lee
- Wollstonecraft, Mary, 1759-97 ; Burke, Edmund, 1730-97
- Wollstonecraft, Mary, 1759-1797
- Wollstonecraft [married name Godwin], Mary, 1759–1797
- Wollstonecraft [married name Godwin], Mary, 1759–1797,
- Wolseley, Garnet Joseph, 1833-1913
- Wolsey, Thomas, cardinal, 1475?-1530
- Wolstenholme-Elmy, Elizabeth C., 1834-1913
- Wood, Albert, K.C., fl. 1921-1938
- Wood, Bill, Fr. 1918-2005
- Wood, Derek 1964-1988
- Wood, Henrietta, 1898-1986
- Wood, Herbert, 1860-1955
- Wood, James, 1867-1936
- Wood, John (1798-1880)
- Wood, Robert, 1717-1771
- Wood, William, 1671-1730
- Wood, William, ?1671-1730
- Wood-Martin, William G., d. 1917
- Wood-Martin family
- Woodall, Frederic, CMG, 1866-1956
- Woodcock, Caroline, 1886-1972
- Woodcock, Ronnie, b. 1922
- Woodcock, Wilfrid James, d. 1960
- Wood family
- Woodham-Smith, Cecil Blanche (née Fitzgerald), 1896-1977
- Woodham-Smith, Cecil Blanche (née Fitzgerald), 1896-1977
- Woodman, Douglas Albert, c.1918-1941
- Woodman, Peter Charles, 1943-2017
- Woodroffe, John, 1781-1859
- Woods, Alexander, d. 1766
- Woods, James
- Woods, James, d.1829
- Woods, James, d.1923
- Woods, Joseph, 1776-1864
- Woods, Mary, fl.1870-1880
- Woods, Mary Elizabeth (Molly), 1895-1980
- Woods, Patrick James Blythe, 1932-2004
- Woods, Peter, 1814-
- Woods, Philip James, 1880-1961
- Woods, Robert Stanton, Sir, 1877-1954
- Woods family
- Woodside, Alfred McBride, fl. 1900-1918
- Woodside, Moya, fl. 1939-1945
- Woodside, William, fl.1885-1900
- Woodside, William Millar, 1860-1890
- Woodville, Richard Caton, 1856-1927
- Woodward, Benjamin, 1816-1861
- Woodward, Ernest Llewellyn, Sir, 1890-1971
- Woodward, Henry, d. 1863
- Woodward, Richard, 1726-94
- Woodward, Richard, bishop, 1726-1794
- Woodward, T.H., Capt.
- Woolf, Adeline Virginia, 1882-1941
- Woolf, Leonard Sidney, 1880-1969
- Woolf, Virginia
- Woolrych, Austin Herbert, 1918-2004
- Woolsey, John, c.1840-post-1887
- Woolworth, Frank W., 1852-1919
- Woolworth family
- Worcester, William, 1415-1480x85
- Wordsworth, William, 1770-1850
- Workman, Robert, 1835-1921
- Workman, Thomas, 1843-1900
- Workman, Thomas, d.1900
- Wormald, Patrick, 1947-2004
- Worrall, James, d. 1804
- Worsdale, James, c.1692-1767
- Worth, Edward, 1676-1733
- Worth, Edward, 1676-1733
- Worth, Edward, 1678-1733
- Worth, Edward, 1678-1733,
- Worth, Edward, c.1678-1733
- Wotton, Henry, Sir, 1568-1639
- Wotzel, Caspar Anton, 1828 - 73
- Woulfe, David, S.J., 1523-1578
- Woulfe, Johanna, c.1788-1837
- Woulfe, Nicholas, fl. 1770
- Woulfe, Peter, 1727-
- Woulfe Flanagan family
- Woutneel, Hans, d. 1608?
- Wrafter, Joseph, 1882-1936
- Wray family
- Wright, Barbara, Professor, fl. 1978
- Wright, Billy, 1960-1997
- Wright, Edward Perceval, 1834-1910
- Wright, Frank Lloyd, 1867-1959
- Wright, George Newenham, 1794?-1877
- Wright, John, d.1915
- Wright, John, fl. 1809
- Wright, John Michael
- Wright, Joseph, 1834-1923
- Wright, Kathleen Alexanderson, d. 1921
- Wright, Mabel Crawford (née MacDowell) fl. 1915-1919
- Wright, Michael, fl.1702
- Wright, Thomas, 1711-1786
- Wright, Thomas, 1711–1786
- Wright, Thomas, 1810-1877
- Wright, Thomas Charles, 1799-
- Wright, William, 1837-1899
- Wright family
- Wrixon-Becher, Henry
- Wulff, Winifred, 1895-1946
- Wulfstan, bishop and saint, c.1008-1095
- Wyatt, James, 1746-1813
- Wyatt, James, 1746-1813; The Malone Family
- Wyatt, James, 1746–1813
- Wyck, Jan, 1640-1700
- Wye, Richard, fl. 1394
- Wyer, Teresa, 1868-1959
- Wylie, Sam Brown, 1773-1852
- Wylie, W.E. (William Evelyn), 1881-1964
- Wylie, William Evelyn
- Wylie, William Evelyn, 1881–1964
- Wylly family, fl. 1730-1976
- Wyman, John, fl.1972-1973
- Wyndham, George, 1st Baron Leconfield, 1787-1969
- Wyndham, George, 1863-1913
- Wyndham, George O'Brien, 3rd earl of Egremont, 1751-1837
- Wyndham, Madeline, 1835-1920
- Wyndham, William, Sir, 1687-1740
- Wyndham-Quin, Caroline, 1790-1870
- Wyndham-Quin, Edwin Richard Windham, 3rd earl of Dunraven and Mount Earl, 1812–1871
- Wyndham-Quin, Windham Thomas, 4th earl of Dunraven, 1841-1926
- Wyndham-Quin, Windham Thomas, 4th Earl of Dunraven and Mount-Earl, 1841-1926
- Wyndham-Quin, Windham Thomas, 1841-1926
- Wyndham-Quin family
- Wynne, Anne, Sister Mary Paul, 1878-1964
- Wynne, C. F. (Dickie), fl. 1903
- Wynne, Edmond
- Wynne, Edmond, Captain, 1803x4-1872
- Wynne, Luttrell, 1738-1814
- Wynne, Martin, 1913-1998
- Wynne, Michael, 1937-
- Wynne, Owen, fl. 1658
- Wynne, Winifred, fl.1930-1960
- Wynne family
- Wynter, Vincent, 1926-2018
- Wynyard, H. J. B., Colonel
- Wyse, Andrew
- Wyse, Thomas, 1791-1862
- Wyse, Thomas, c.1791-1862
- Wyse, Thomas, Sir, 1791-1862
- Wyse, William, Sir, b. after 1480, d. 1556
- Wyse-Power, Jennie, 1858-41
- Wyse-Power, Jennie, 1858-1941; Fitzgerald, Frances 1950-present
- Wyse family
- X
- Yajnik (Yagnik), Indulal Kanaiyalal, 1892-1972
- Yang, Chengliang
- Yates, John, d.1847
- Yates, John, fl. 1875
- Yeates, William Butler, 1865-1939
- Yeats, (William) Michael Butler, 1921–2007
- Yeats, Anne, 1919-2001
- Yeats, Bertha Georgie (‘George’),1892–1968
- Yeats, Bertha Georgie (‘George’), 1892–1968
- Yeats, Bertha Georgie, 1892-1968
- Yeats, Elizabeth C., 1868-1940
- Yeats, Elizabeth C., d. 1940
- Yeats, Gráinne Ní Éigeartaigh, 1925-2013
- Yeats, Jack B (Jack Butler), 1871-1957
- Yeats, Jack B. (Jack Butler), 1871-1957
- Yeats, Jack B., 1871-1957
- Yeats, John Butler, 1839-1922
- Yeats, John Butler, 1839–1922
- Yeats, Lily, 1866-1949
- Yeats, Mary Cottenham, 1863-1947
- Yeats, Mary Cottenham, 1867-1947
- Yeats, Susan (née Pollexfen), 1841-1900
- Yeats, Susan, 1841-1900
- Yeats, Susan, d. 1949
- Yeats, Susan and Elizabeth
- Yeats, W. B. (William Butler), 1865-1939
- Yeats, W.B. (William Butler), 1865-1939
- Yeats, W. B. (William Butler), 1865-1939 ; Longley, Michael, 1939-
- Yeats, W. B. (William Butler), 1865-1939,
- Yeats, W. B. (William Butler) 1865-1939
- Yeats, William Butler (1865-1939)
- Yeats, William Butler, 1865-1939
- Yeats, William Butler, 1865–1939
- Yeats, William Butler 1865-1939
- Yeats, William Buttler, 1865-1939
- Yeats family
- Yehya, Qassim Abdullah, c.1978-2015
- Yelverton, Barry, d. 1805
- Yelverton, Charles, 1824-1883
- Yelverton, William Charles, 4th Viscount Avonmore, 1824-1883
- Yeoman, Richard Patrick, d. 1997
- Yolande of Aragon, 1381-1442
- Yonge, James (fl. 1425)
- Yorke, Charles, Lord Chancellor of Great Britain, 1722–1770
- Yorke, Jemima (née Campbell - Marchioness Grey), 1722-1797
- Yorke, Peter, 1880-1925
- Yorke, Peter Christopher, 1864-1925
- Yorke, Philip, 1st Earl of Hardwicke and Lord Chancellor of Great Britain. 1690-1764
- Yorke, Philip, 3rd earl of Hardwicke, 1757–1834
- Youell, Frederick George, 1871-post 1924
- Young (Henry), Mabel Florence 1889–1974
- Young, Andrew, 1919-1992
- Young, Arthur, 1741-1820
- Young, Arthur, 1741-1820,
- Young, Arthur, 1741–1820
- Young, Augustus Blayney Russell, 1845-1941
- Young, Barbara, d.2003
- Young, Edward, bap. 1683, d. 1765
- Young, Ella, 1867-1956
- Young, Henry, 1786-1869
- Young, J.G., fl. 1842/43
- Young, Jimmy, 1918-1974
- Young, John, 1872-1916
- Young, John, bishop of Limerick, 1746-1813
- Young, John, d. 1813
- Young, Matthew, 1750–1800
- Young, Matthew, Bishop of Clonfert, 1750-1800
- Young, Peter, 1915-1988
- Young, Peter, d. 1999
- Young, Robert, 1764-1823
- Young, Robert, 1822-1917
- Young, Robert, ?[architect and civil engineer, 1822–1917]
- Young, Rose Maud (Ní hÓgáin, Róis), 1865-1947
- Young, Rose Maud 1865-1947
- Young, Samuel Shannon, fl. 1894-1921
- Young, Ursula, d. 1830
- Young, William, 1870-1958
- Younge family
- Young family
- Yudenitch, Flora Sandes-, 1876-1956
- Yushchenko, Viktor Andriyovych, b.1954
- Zamenhof, Ludwig Lazarus (Ludwik Lejzer), 1859-1917
- Zamenhof, Ludwig Lazarus, 1859-1917
- Zartman, William, b.1932
- Zedong, Mao, Chairman, 1893-1976
- Zelenskyy, Volodymyr, b.1978
- Zeuss, Johann Kaspar, 1806-1856
- Ziegler, Edith
- Zimmer, Heinrich, 1851-1910
- Zouche, Beatrice, fl. 1642
- Zouche, John, fl. 1582
- [Borlase, Edmund, c.1620-1682]
- [Cobden, Richard, 1804-1865]
- [Hughes, James, fl.1930-1955]?
- [Swift, Jonathan, 1667-1745]
- Áed Findliath, king of Ailech, High King of Ireland, d.879
- Áed mac Bricc -589
- Áed Sláine (d. 604), son of Diarmait and king of Tara
- Áed Sláine, son of Diarmait and king of Tara, d. 604
- Áed Ua Cáellaide, bishop of Louth
- Áed Ua Forréid, Bishop of Armagh, fl:1032-1056
- Ághas, Tomás, see Ashe, Thomas, 1885-1917
- Ághas, Tomás, see Ashe, Thomas, 1885–1917
- Ælred, Saint, 1109?-1166
- Æthelred the Unready, king, 966x8-1016
- Æthelstan, king, d. 939
- Éamann Rís, 1762-1844
- Éimíne, Saint
- Éimíne, Saint, ?7th cent.
- Émín, Saint
- Étgal, abbot of Skellig, d. 824
- Étienne-Francois, duc de Choiseul, 1719-1785
- Íte, d.570/577
- Íte, St, c. 480- 570/577
- Ívarr, fl. 873
- Ó'Domhnaill dynasty (of County Donegal)
- Ó'Dálaigh, Conchubhan
- Ó'Dálaigh, Cú Chonnacht
- Ó'Faoláin, Seán, 1900-1991
- Ó'n Cháinte, Fear Feasa, fl. 1600
- Ó an Chainte, Fear Feasa ; Mac an Bhaird, Eoghan Ruadh ; Donne, John
- Ó Baoighill, Niall Pluincéad, 1898-1923
- Ó Baoighill, Pádraig, 1932-2024
- Ó Baoill, Colm
- Ó Beirn, Liam, 1871-1949
- Ó Beirn, Mici Bán, 1899-1980
- Ó Beirn, Pádraic, 1857-1927
- Ó Beirn, Séamus see O'Beirne, Seamas (Ó Beirn, Séamus; Byrne, James Fahy ), 1881–1935
- Ó Bolguidhir, Liam, d.2011
- Ó Braonáin, Micheál, c.1748-c.1798
- Ó Briain, Art, 1872-1949
- Ó Briain, Brian Bán, lord of Thomond, d. 1350
- Ó Briain, Conchubhar
- Ó Briain, Felim, O.F.M., 1895-1957
- Ó Briain, Felim, OFM, 1895-1957
- Ó Briain, Liam, 1888-1974
- Ó Briain, Liam, 1888–1974
- Ó Briain, Muirchertach, king of Thomond, d. 1343
- Ó Briain, Máirtín, 1953-2004
- Ó Briain, Pádraig Óg, 1920-1977
- Ó Briain, Pól, c.1763-1820
- Ó Briain, Seán, fl. 1736-1743
- Ó Briain, Seán Dubh, fl. 1730-1750
- Ó Briain, Toirdhealbhach Mór, d. 1306
- Ó Briain family of Thomond
- Ó Broin, Fiach Mac Aodha, c. 1534-1597 (anglicised as O'Byrne, Feagh (or Fiach) McHugh (or MacHugh) )
- Ó Broin, Leon, 1902-1990
- Ó Broin, Pádraig, 1908-1967
- Ó Brolcháin, Maol Íosa, d. 1086
- Ó Brolcháín (Bradley) family
- Ó Bruacháin, Tomás Gruamdha (fl.c.1450)
- Ó Bruadair, Daibhí, 1625-1698
- Ó Bruadair, David
- Ó Bruadair, Dáibhidh (Dáibhí), c.1625-1698
- Ó Bruadair, Dáibhí, 1625?-1698
- Ó Bruic, Micheál
- Ó Brádaigh, Ruairí
- Ó Buaachalla, Breandán, 1936-2010
- Ó Buacalla, Tadhg (an Táilliúr)
- Ó Buachalla, Breandán, 1936-2010
- Ó Buachalla, Domhnall, 1866–1963
- Ó Buachalla, Liam, d. 1941
- Ó Buachalla, Pádraig, fl.1933
- Ó Buachalla, Seán, d. 1903
- Ó Cadhain, Máirtín
- Ó Cadhain, Máirtín, 1906-1970
- Ó Cadhain, Máirtín, 1906–1970
- Ó Cadhla, Diarmuid, d.2019
- Ó Cadhla, Labhrás, 1889-1961
- Ó Cadhla, Séamas, d.1918
- Ó Caiside, Ruaidhrí, d.1541
- Ó Caiside, Tomás
- Ó Caiside, Tomás (An Caisideach Bán), (c. 1709 – 1773?)
- Ó Caithnia, Liam, 1925-2001
- Ó Caithnia, Liam P(ilib), 1925-2001
- Ó Callanáin, Donncha, fl.1778
- Ó Canainn, Tomás, 1930-
- Ó Canann family
- Ó Canannáin family
- Ó Caodháin, Colm, 1893-1975
- Ó Caoimh, Domhnall, -1669
- Ó Caoimh, Donncha
- Ó Caoimh, Eoghan, 1656-1726
- Ó Caoimh, Eoghan, 1656-1726 ; O'Keeffe family
- Ó Caoimh, Séamas, 1889-1979
- Ó Caoindealbháin, Séamas (‘An Setter’), -1836
- Ó Caoindealbháin, Séamas, c.1775-1836
- Ó Caomhánaigh, Art Mac Murchú
- Ó Caomhánaigh, Eoghan
- Ó Caomhánaigh, Seán Óg (Seán a' Chóta) , 1885-1947
- Ó Caomhánaigh, Seán Óg, 1885-1947
- Ó Carragáin, Éamonn
- Ó Casaide, Séamus (Cassedy, James), 1877–1943
- Ó Cathalláin, Pádraig 'Peaidi Neoini'
- Ó Cathalláin, Seáinín Mhuiris
- Ó Cathasaigh, Peadar, ?-1894
- Ó Cathasaigh, Tomás
- Ó Catháin, Gearóid,, 1947-
- Ó Catháin, Pádraig, d. 1929
- Ó Catháin, Pádraig Ceaist, 1887-1955
- Ó Catháin, Seán Ceaist, 1911-1974
- Ó Catháin family
- Ó Ceallaigh (Ó Cellaig)/O'Kelly family
- Ó Ceallaigh, Brian, 1889-1936
- Ó Ceallaigh, Cormac, 1912-1996
- Ó Ceallaigh, Donnchadh, 1797-1877
- Ó Ceallaigh, Donnchadh Anraí, 1797-1877
- Ó Ceallaigh, Muircheartach mac Pilib, -c1409
- Ó Ceallaigh, Seán T., 1882-1966
- Ó Ceallaigh, Séamas, 1879-1954
- Ó Ceallaigh, Séamas, 1880-1918
- Ó Ceallaigh, Séamus, 1879-1954
- Ó Ceallaigh, Tomás, Fr, 1879-1924
- Ó Ceallaigh family
- Ó Ceama, Seán Pheats Tom, fl 1945
- Ó Cearbhaill, Breandán, 1902-1999
- Ó Cearbhaill, Mairgréag an-Einigh, 1400?-1451
- Ó Cearbhaill, Seán Caoch
- Ó Cearbhaill, Seán E., 1922-2011
- Ó Cearbhaill, Seán Séamus, SJ, 1837-1889
- Ó Cearbhaill, Tadhg
- Ó Cearnaigh, Nioclás
- Ó Cearnaigh, Seán
- Ó Cearnaigh, Seán, c.1545-c.1587
- Ó Cearra, Séamus (Jimmí), 1927-
- Ó Ceit, Seosamh T., 1868-1928
- Ó Cellaig, Uilliam Buidhe (c.1349-1381) ; O'Kelly family
- Ó Cianáin, Tadhg, c.1575-1625
- Ó Cianáin, Tadhg, c.1575-c.1614
- Ó Cianáin, Tadhg, c.1575-c.1614
- Ó Cianáin, Tadhg, c.1575– c.1614
- Ó Cianáin, Tadhg, d.1610
- Ó Cianáin, Tadhg, d. 1610
- Ó Cianáin, Tadhg, d.1610 ; Piers, Henry, 1567?-1623
- Ó Cianáin, Ádhamh, ? - 1373
- Ó Cianáin family
- Ó Cianáin family, 1300-1650
- Ó Ciarmhaic, Michael, 1906-
- Ó Cinnéide, Pádraig, 1803-1882
- Ó Cinnéide, Seán
- Ó Cinnéide, Séamus, 1886-1942
- Ó Cinnéide, Tomás, 1914-1992
- Ó Cionnfhaolaidh, Michéal, 1887-1956
- Ó Cionnfhaolaidh, Séimín (1922-)
- Ó Ciosáin, Éamonn, 1886-
- Ó Cléirigh, Conn R., 1927-1995
- Ó Cléirigh, Cú Choigcríche, fl. 1628-1664
- Ó Cléirigh, Cúchoigcríohe, fl. 1632
- Ó Cléirigh, Cú Coigcríche
- Ó Cléirigh, Cú Mumhan, 16th cent.
- Ó Cléirigh, Lughaidh, c.1580-1630?
- Ó Cléirigh, Micheál, 1575-1643
- Ó Cléirigh, Micheál, c.1590-1643
- Ó Cléirigh, Michéal
- Ó Cléirigh, Mícheál, c.1590-1643
- Ó Cléirigh, Mícheál, c.1590-1643 ; Ward, Hugh, c.1593-1635 ; Colgan, John, c,1592-1658
- Ó Cléirigh, Mícheál, c.1590?-1643
- Ó Cléirigh, Seán, d.1846
- Ó Cléirigh, Seán Buidhe, fl.1453-1454
- Ó Cléirigh family
- Ó Cléirigh Giolla Riabhach
- Ó Clérigh family
- Ó Cobhthaigh, An Clasach, d 1415
- Ó Cobhthaigh, Diarmaid ; Ó Cobhthaigh, Eóghan
- Ó Cobhthaigh, Eoghan (mac Aodha), fl. 1540-1547
- Ó Cobhthaigh, Muircheartach, fl. 1577
- Ó Cobhthaigh, Tadhg, d.1554 ; O'Coffey family
- Ó Coileáin, an tAth. Lughaidh, fl.1720
- Ó Coileáin, Seán, c.1740-1817
- Ó Coileáin, Seán ‘Máistir’ (Collins, John ) (c.1754–1817
- Ó Coileáin, Seán ‘Máistir’ (John Collins ) (c.1754–1817)
- Ó Coileáin, Séan, 1754-1817
- Ó Coileán, Tadhg, fl c. 1817
- Ó Coimin, Daithi
- Ó Coimín, Dáithí - see Comyn, David, 1854-1907
- Ó Coimín, Micheál, d. 1760
- Ó Coimín, Mícheál, c.1676-1760
- Ó Coisdealbha, Tomás, 1786-1831
- Ó Colmáin, Domhnall, c.1645-c.1704
- Ó Colmáin, Seán, 1887-1947
- Ó Colmáin, Séámus, fl.1773
- Ó Conaill, Feardorcha, 1876-1929
- Ó Conaill, Muiris
- Ó Conaill, Peadar, 1755-1826
- Ó Conaill, Seán, 1853-1931
- Ó Conaill, Seán, 1853-1931,
- Ó Conaill, Seán, 1955-2003
- Ó Conaill, Seán, fl.1650
- Ó Conaill, Tadhg, d.1831
- Ó Conaire, Pádraic, 1882-1928
- Ó Conaire, Pádraic, 1882–1928
- Ó Conaire, Pádraic Fionn, 1906->1982
- Ó Conaire, Tomás, fl.1980
- Ó Conbhuidhe (Conway), Séamus (Colmcille), 1909-92
- Ó Concheanainn, Tomás
- Ó Concheanainn, Tomás (Bán), 1870-1961
- Ó Con Cheanainn, Tomás, 1921-2015
- Ó Conchobair, Aedh (O'Connor, Hugh), King of Connacht, fl. 1293-1309?
- Ó Conchobair, Feidhlimid mac Aedh, 1293-1316
- Ó Conchobair, Tairdelbach, fl. 1100-1200
- Ó Conchobhair, Aodh, d. 1309
- Ó Conchobhair, Diarmaid, d.1463
- Ó Conchobhair, Ruadhrí, 1116-1198
- Ó Conchubhair, Donnchadh Albanach, 1571-1647
- Ó Conchubhair, Donnchadh Óg, fl. 1581-1611
- Ó Conchubhair, Maghnus, -1293
- Ó Conchubhair, Muiris, fl.1946
- Ó Conchubhair, Risdeard, 1561-1625
- Ó Conchubhair, Risteard, 1561-1625
- Ó Conchubhair, Tadhg (O'Connor, Tadhg) (d. 1552)
- Ó Conchubhair, Tomás 'an tSneachta', 1798-c.1870
- Ó Conchubhair, Tomás, 1798-1865
- Ó Conchubhair Donn, Conchubhar mac Eoghain Chaoich, fl. 1510-15166
- Ó Conchubhair Donn, Diarmaid, d.1600
- Ó Conchubhair Toirdhealbhach, fl. 1645
- Ó Conchuir, Micheál, fl.1887
- Ó Conchúir, Breandán
- Ó Conchúir, Peadair Sheáin, 1810-c.1893
- Ó Conchúir, Éamonm -1987
- Ó Conghaile, Micheál, b.1962
- Ó Conghaile, Peait Phádráig Tom
- Ó Conghaile, Seán, 1903-
- Ó Conlain, Michael, 1927-2015
- Ó Conluain, Proinsias, 1919-2013
- Ó Corcora, Dónall, 1878-1964
- Ó Corrbuí, Máirtín, B. 1912
- Ó Corráin, Donnchadh
- Ó Corráin, Donnchadh, 1942-2017
- Ó Corráin, Donnchadh 1942-2017
- Ó Creag (Craig), Séamus (J.P.), 1863-1934
- Ó Criomhthain, Domhnall, d. 1909
- Ó Criomhthain, Tomás, 1854-1937
- Ó Criomhthain, Tomás, 1854/5-1937
- Ó Criomhthain,Tomás, 1854/5-1937
- Ó Criomhthain,Tomás, 1854/5–1937
- Ó Criomhthain, Tomás, 1855-1937
- Ó Criomhthain, Tomás, 1855-1937 agus Oileánaigh Eile
- Ó Criomhthainn, Tomás, 1854-1937
- Ó Crotaigh, Liam, c.1710-1742
- Ó Crualaoich, Gearóid
- Ó Crualaí, Tadhg Rua, fl.1769
- Ó Cróinín, Donncha A., 1920-1990
- Ó Cróinín, Seán, 1915-1965
- Ó Cróinín, Séan, 1915-1965
- Ó Cuanaigh, Proinsias, 1941-
- Ó Cuileanáin, Micheál, 1883-1961
- Ó Cuill, Muiris, -1833
- Ó Cuilleanáin, Conchubhar, 1917-1960
- Ó Cuimín, Pádraig, 1933-2009
- Ó Cuindlis, Murchadh
- Ó Cuinn, Cosslett, 1907-1995
- Ó Cuinn, Cosslett, 1907-1995, see Quin, Cosslett, Rev., 1907-1995
- Ó Cuinneagáin, Gearóid (1910-1991)
- Ó Cuinneagáin, Gearóid, 1910-1991
- Ó Cuinneagáin, Seosamh, 1942-
- Ó Cuirnín, Sighraidh, d.1388
- Ó Cuirrín, Seán, 1894-1980
- Ó Cuiv, Shán, d. 1940
- Ó Cundlis, Murchadh, fl. 1390-1411
- Ó Curraoin, Micheál, 1936-2008
- Ó Céilleachair, Domhnall Bán, 1871-1950
- Ó Céirín, Muiris
- Ó Céirín, Uileog, 1791-1863
- Ó Cúiv, Brian, 1916-1999
- Ó Daimhín, Muiris, 1842-1927
- Ó Danachair, Caoimhín
- Ó Danachair, Caoimhín, 1913-2002
- Ó Danachair, Caoimhín, 1913–2002
- Ó Debhín, Muiris, 1798-1902
- Ó Direáin, Darach, c.1876-1950 ; Flower, Robin Ernest William, 1881-1946
- Ó Direáin, Mháirtín, 1910-1988
- Ó Direáin, Máirtín, 1910-1988
- Ó Direáin,Máirtín, 1910-1988
- Ó Dochartaigh (O'Doherty), Antoine (A.J.) 1863-1932
- Ó Dochartaigh, Aodh, fl.1630
- Ó Dochartaigh, Aodh, fl 1660
- Ó Dochartaigh, Henry, c.1744-1796
- Ó Dochartaigh, John Simí, c.1895-1980
- Ó Dochartaigh, Tomás, fl.c.1937-c.1950
- Ó Dochartaigh family
- Ó Dogherty, Rose, c.1588-1660
- Ó Doibhlin, Breandán
- Ó Doibhlin, Breandán, 1931-
- Ó Doibhlin, Breandán, 1931-2023
- Ó Doibhlin, Diarmaid, 1942-2017
- Ó Doirnín, Peadar, 1686?-1768?
- Ó Doirnín, Peadar, c.1700-1769
- Ó Domhnaill, An Calbhach Ruadh
- Ó Domhnaill, Aodh, d.1600 ; Mac an Bhaird, Uilliam Óg, d.1576
- Ó Domhnaill, Aodh Rua (O'Donnell, Red Hugh), 1572-1602
- Ó Domhnaill, Aodh Ruadh, 1429-1505 ; O'Donnell family
- Ó Domhnaill, Domhnall Mór (Mac Éigneacháin)
- Ó Domhnaill, Micheál, 1952-2006
- Ó Domhnaill, Michéal, 1910-1997
- Ó Domhnaill, Niall Garbh, 1569-1626
- Ó Domhnaill, Niall Garbh, fl. 1422-1439
- Ó Domhnaill, Nualaidh, Máire and Mairghréad
- Ó Domhnaill, Ruaidrí, 1575-1608
- Ó Domhnaill, Toirdhealbhach an Fhíona. d.1423
- Ó Domhnaill, Uilliam (Daniell, William), 1570-1628
- Ó Domhnaill of Tír Conaill
- Ó Domhnuill, Uilliam, archbishop of Tuam, see Daniel, William, archbishop of Tuam, 1570-1628
O'Donnell, William, archbishop of Tuam, see Daniel, William, archbishop of Tuam, 1570-1628
- Ó Donnabháin Rossa, Diarmuid, 1831-1915
- Ó Donnchadha, Liam
- Ó Donnchadha, Tadhg ('Torna'), 1874-1949
- Ó Donnchadha, Tadhg (Torna), 1874-1949
- Ó Donnchadha, Tadhg (‘Torna’), 1874-1949
- Ó Donnchadha, Tadhg (‘Torna’), 1874–1949.
- Ó Donnchadha, Tadhg, 1874-1949
- Ó Donnchadha, Éamonn, 1876-1953
- Ó Donnchadha an Ghleanna, Séafraidh, c.1620-1678
- Ó Dorchaoí, Ciarán, c.1931-2017
- Ó Dubhagáin, Seaán Mór
- Ó Dubhda, Peadar, 1881-1971
- Ó Dubhda, Seán, 1911-2004
- Ó Dubhda, Tadhg Riabhach, King of Uí Fiachrach Muaidhe, d.1432.
- Ó Dubhda family
- Ó Dubhghaill, Brian (Doyle, Bernard (sic)). c1861-1933
- Ó Dubhghaill, Séamas, 1855-1929 ('Beirt Fhear')
- Ó Dubhshláine, Micheál, 1942-2006
- Ó Dubhthaigh, Niall Mhícheáil, 1899?-1992 ; Ní Dhomhnaill, Caitlín ; Uí Dhomhnaill, Gráinne
- Ó Dubháin, Séamus
- Ó Dufaigh, Seosamh, bishop of Clogher
- Ó Dufaigh, Éadbhard, 1840-1868
- Ó Duibhdábhoireann, Domhnall, fl. 1564-1570
- Ó Duibheannaigh, John Ghráinne
- Ó Duibhgeannáin, Cú Coigcríche
- Ó Duibhgeannáin, David fl.1651-1652
- Ó Duibhgeannáin, Dubhtach Óg, fl. 1600
- Ó Duibhgeannáin, Maghnus (d.1534)
- Ó Duibhgeannáin, Maghnus, ?-1452
- Ó Duibhgeannáin, Pilib Ballach, fl. 1584-89
- Ó Duibhgheannáin, Matha Glas, d.1517
- Ó Duibhginn,Seosamh , 1914–1994
- Ó Duibhir, Eamonn, 1883-1963
- Ó Duibhne (Deeny), Dómhnaill (Daniel), 1868-1923
- Ó Duibhne, Domhnaill (1868-1923).
- Ó Duilearga, Séamus, 1899-1980
- Ó Duilearga, Séamus, 1899-1980 ; Almqvist, Bo
- Ó Duinn, Proinsias
- Ó Duinnshléibhe, Seán Bell, c.1918-1989
- Ó Duinnín, Pádraig, 1860-1934
- Ó Duinnín, Pádraig Stiabhna, 1860-1934, see Dinneen, Patrick Stephen, 1860-1934
Ua Duinnín, Pádraig Stiabhna, 1860-1934, see Dinneen, Patrick Stephen, 1860-1934
- Ó Duinnín, Uiliam, scribe, fl.1828
- Ó Dumhnaill, Niall Garbh, 1569-1626
- Ó Dunnshléibhe, Cathal, fl. 1592-1611
- Ó Dunnshléibhe, Cormac, fl.c.1459
- Ó Dálaigh (Daly), Seán (John) 1800-78
- Ó Dálaigh, Antaine, 1786-1820
- Ó Dálaigh, Aodh (Hugh O'Daly), fl.1721-1758
- Ó Dálaigh, Aonghus Fionn (na Diagachta), c.1548-c.1602
- Ó Dálaigh, Aonghus Fionn, c.1548- c.1602
- Ó Dálaigh, Aonghus Fionn, d.1601
- Ó Dálaigh, Aonghus Fionn, fl. 1585-1601
- Ó Dálaigh, Cearbhall, 1911-1978
- Ó Dálaigh, Cearbhall, 1911–1978
- Ó Dálaigh, Cearbhall, fl.1630
- Ó Dálaigh, Conchubhar
- Ó Dálaigh, Cú Chonnacht
- Ó Dálaigh, Donnchadh Mór, d. 1244
- Ó Dálaigh, Gofraidh Fionn
- Ó Dálaigh, Gofraidh Fionn, d. 1387
- Ó Dálaigh, Muireadhach Albanach
- Ó Dálaigh, Muiris, 1910-1990
- Ó Dálaigh, Peaidí Mharas, 1876-1966
- Ó Dálaigh, Seosamh, 1909- 1992
- Ó Dálaigh, Seosamh, fl.1947-1981
- Ó Dálaigh, Seán, 1800-1878
- Ó Dálaigh, Séamus, fl.1770
- Ó Dálaigh, Tomás, 1907-1989
- Ó Dálaigh Family
- Ó Dálaigh family
- Ó Dálaigh family ; Ó Cobhthaigh family ; Ó Fialáin family ; Nugent, William, c.2550-1625 ; Dillon family
- Ó Dóláin, Séamus, c.1915-2010
- Ó Dómhnaill, Pádraig, 1857-1927
- Ó Dónaill, an tAth. Nioclás, c.1700 -1754
- Ó Dónaill, Hiúdaí Sheáinín, 1853-
- Ó Dúghaill, Tomás (Doyle, Thomas), 1817-1903
- Ó Dúghaill, Tomás, 1817-?
- Ó Dúill, Gréagóir, 1946-
- Ó Dúlaing, Donncha, 1933-
- Ó Dúnaighe, Seán. 1878-1965
- Ó Eochaidh, Seán, 1913-2002
- Ó Faircheallaigh, Seán, fl. 1861
- Ó Faircheallaighh, Seán, fl. 1861
- Ó Faoláin, Maurus, abbot, fl. 1880-1910
- Ó Faoláin, Risteard, c.1856- ?
- Ó Faoláin, Seán, 1900-1991
- Ó Faoláin, Seán, 1900-1991áin
- Ó Fathaigh, Athair Antaine
- Ó Fathaigh, Pádraig, 1879-1976
- Ó Fathartaigh, Mícheál
- Ó Fearghail, Brian, 1715-1789
- Ó Fearghail family
- Ó Fearghusa, Liam, 1881-1971
- Ó Fiaich, Tomás (1923-1990)
- Ó Fiaich, Tomás, 1923 – 1990
- Ó Fiaich, Tomás, 1923-90
- Ó Fiaich, Tomás, 1923–1990
- Ó Fiaich, Tomás, cardinal, 1923-1990
- Ó Fiaich, Tomás 1923 – 1990
- Ó Fiannachta, Pádraig
- Ó Fiannachta, Pádraig, 1927 – 2016
- Ó Fiannachta, Pádraig, 1927-
- Ó Fiannachta, Pádraig, 1927-2016
- Ó Fiannachta, Pádraig,1927-2016
- Ó Ficheallaigh, Muiris; O'Fihely, Maurice (Mauritius de Portu, Mauritius de Hibernia, Flos Mundi), d.1513
- Ó Fithcheallaigh, Muiris see O'Fihely, Maurice
- Ó Flaithearta, Ruairí, 1629-1718
- Ó Flaithearta, Ruairí, 1629-1718, see O'Flaherty, Roderick, 1629-1718
- Ó Flaitheartaigh, Brian, fl. 1750
- Ó Flaitheartaigh, Máirtín ; Ó Néill, Séamus, 1910-1981 ; Ó hEithir, Breandán
- Ó Flannagáin, Seósamh, 189?-1939
- Ó Flatharta, Pádraig
- Ó Floinn, Criostóir, 1927-
- Ó Floinn, Donnchadh, c.1760-1830
- Ó Floinn, Donnchadha, 1902-1968
- Ó Floinn, Tomás, 1910-1997
- Ó Foghluadha, Risteard (Fiachra Éilgeach), 1871–1957
- Ó Foghludha, Risteard (Richard Foley), 1871–1957
- Ó Foghlú, Micheál, 1879-1952
- Ó Foghlú, Pádraig, fl 1844
- Ó Fuaráin, Nioclás, fl.1840
- Ó Fágáin, Pádraig, 1922-2011, see Fagan, Patrick, 1922-2011
- Ó Fáilbhe, Clusach
- Ó Gadhra, Fearghal Dubh,
- Ó Gadhra, Fearghal Dubh, fl. 1640
- Ó Gadhra, Nicolás (Fearghal Dubh),fl. 1655-after 5 June 1686
- Ó Gadhra, Nollaig, 1943-2008
- Ó Gadhra, Seán Óg, 1648-c.1720
- Ó Gadhra family ; O'Gara family
- Ó Gadhra or O'Gara family
- Ó Gallachair, Pádraig, 1919-1996
- Ó Gallachair, Réamonn, bishop, d. 1601
- Ó Gallachobhair, Micheál, fl. 1941
- Ó Gallchobhair, Mícheál, fl.1842-1867
- Ó Gallchobhair, Séamas, c. 1684-1751
- Ó Gallchobhair, Séamus, bishop, d. 1751
- Ó Gallchobhair, Séamus see Gallagher, James (Ó Gallchobhair, Séamus), 1684?-1751
- Ó Gallchóir, Mícheál, c.1864-c.1941
- Ó Gallchóir, Pádraig, 1913-1993
- Ó Gallchóir, Seán, 1912-1984
- Ó Gallchóir, Séamas, 1684-1751
- Ó Gaoithín, Mícheál (an file), 1907-1974
- Ó Gaoithín, Mícheál, 1904-1974
- Ó Gaora, Colm
- Ó Gaora,Colm, 1887-1954
- Ó Gealacáin, Peadar, (Galligan, Peter), 1792-1860
- Ó Gealacáin, Peadar, c.1792-1860
- Ó Gealacáin, Peadar, c.1792–1860
- Ó Glaisne, Risteárd, 1927-2003
- Ó Glíosáin, Tomás, fl. 1785
- Ó Gnímh, Brian, fl. 1562
- Ó Gnímh, Fear Flatha, fl. 1562
- Ó Gnímh, Fear Flatha, fl.1580-1640
- Ó Gnímh family
- Ó Gormaile, Maitias, d. 2011
- Ó Gormáin (Mac Gormáin, O'Gorman, Gorman), Muiris (Maurice), c.1700/20–c.1794
- Ó Gormáin, Muiris, 1720-1794
- Ó Gormáin, Muiris, ?-1794
- Ó Gormáin, Muiris, d. 1794
- Ó Gormáin, Tomás, 1732-1809
- Ó Gotmáin, Muiris, d. 1794
- Ó Gramhnaigh, Eoghan (Eoghan O'Growney), 1863-1899
- Ó Gramhnaigh, Eoghan, 1863-1899
- Ó Grianna, Séamus (‘Máire’), 1889-1969
- Ó Grianna, Séamus (‘Máire’), 1889–1969
- Ó Grianna, Séamus, 1889-1969
- Ó Grianna, Séamus, 1889–1969
- Ó Grádaigh, Donnchadh, fl. 1770
- Ó Grífín, Pádraig, 1856-1936
- Ó Gríofa, Muiris, fl. 1770
- Ó Guairim, Jack Bacach, 1843-
- Ó Gíontaigh, Domhnall
- Ó hAinlighe, Tomás Seán, 1900-1988
- Ó hAirt, Eoghan, d. 1603
- Ó hAithiarainn, Liam, -1854
- Ó hAlluráin, Fínín, fl. 1832
- Ó hAnluain, Eochaidh Óg
- Ó hAnluain, Liam Ambrós, 1912-1992
- Ó hAnnracháin, Micheál
- Ó hAnnracháin, Micheál, 1801?-1876?
- Ó hAnnracháin, Micheál, 1877-1916, see O'Hanrahan, Michael, 1877-1916
- Ó hAnnracháin, Peadar, 1873-1965
- Ó hAnnracháin, Stiofán, d.2014
- Ó hAnnracháin, Tadhg, 1855-1949
- Ó hAodha, Seán "Hamit", 1861-1946
- Ó hAodha, Seán (Hamit), 1861-1946
- Ó hAodha, Seán (Seán Hayes), 1884-1928
- Ó hAodha, Seán, Ó Domhnaill, 1792-1863
- Ó hAodha, Séan, fl. 1940-1950
- Ó hArgáin, Maitiú, 1774?-1849, see Horgan, Matt, Rev., 1774?-1849
- Ó hArgáin, Pádraig S., M.S.C., d.1993
- Ó hAthairne, Mícheál, fl.1810
- Ó hAthairne, Tomás, c.1790-c.1840
- Ó hEadhra, Cormac, -1612
- Ó hEalaoire, Stiofáin, 1858-1944
- Ó hEalaoire, Stiofáin, 1858-1944,
- Ó hEithir, Breandán, 1930-1990
- Ó hEochaidh, Seán, 1913-2002
- Ó hEodhasa, Eochaidh, c.1560-1612
- Ó hEodhasa, Giollabrighde, d.1614
- Ó hEódhasa, Eochaidh, c.1560-1612
- Ó hEódhasa family
- Ó hEódhosa family
- Ó hEódhusa (O'Hussey), Eochaidh, c.1568-1612 (Eochaí Ó Heosa) ; Mag Uidhir
- Ó hEódhusa, Eochaidh, c.1568–1612
- Ó hIceadha, Pádraig, 1920-1999
- Ó hIfearnain, Liam Dall, fl. 1750-1800
- Ó hIfearnáin, Liam Dall, 1720?-c.1803
- Ó hIghne, Mícheál, c.1872-1969
- Ó hUadhaigh, Seán (John Woods), 1886-1959
- Ó hUallacháin, Diarmaid, 1790-1864
- Ó hUidhrín, Giolla-na-naomh, d. 1420
- Ó hUiginn, Domhnall, fl.1490-1510
- Ó hUiginn, Máel Mhuire
- Ó hUiginn, Pilib bocht, d.1487
- Ó hUiginn, Pól, d. 1724
- Ó hUiginn, Ruaidhrí, fl. 1680
- Ó hUiginn, Ruairí, 1955-
- Ó hUiginn, Seán
- Ó hUiginn, Tadhg Dall, 1550-1591
- Ó hUiginn, Tadhg Óg, d. 1448
- Ó hUiginn, Tomás
- Ó hUiginn family
- Ó hUiginn family ; Daniel, William ; Donnellan, Nehemias ; Bodkin, Christopher, archbishop of Tuam ; Burke, Roland, bishop of Clonfert
- Ó hUir, Tómás, fl. 1030
- Ó hÉalaighe, Domhnall, d. 1934
- Ó hÉaráin, Pádraig, 1897-
- Ó hÉideáin, Uilliam, SJ, 1839-1919
- Ó hÉigeartaigh, Diarmaid, 1856-1934
- Ó hÍci, Micheal P., 1860-1916
- Ó hÓgartaigh, Margaret, 1967-2014
- Ó hÓgáin, Dáithí, 1949-2011
- Ó hÓgáin, Éamonn, SJ, 1831-1917
- Ó hÚigín family
- Ó hÚigínn, Maol Sheachluinn na n-Uirsgéal, fl. c. 1400
- Ó Háinle, Cathal, 1940-
- Ó Laoghaire, Art, 1747-1773
- Ó Laoghaire, Conchubhar, fl. 1690
- Ó Laoghaire, Diarmuid, 1915-2001
- Ó Laoghaire, Diarmuid, SJ, 1915-2001
- Ó Laoghaire, Donnchadh, 1877-1944
- Ó Laoghaire, Donnchadh, 1877–1944
- Ó Laoghaire, Peadar
- Ó Laoghaire, Peadar (An tAthair Peadar), 1839-1920
- Ó Laoghaire, Pádraig, 1853-1932
- Ó Laoghaire, Pádraig, 1870-1896
- Ó Leathlobhair, Seamus (James Lalor), c.1728-1811
- Ó Leocháin, Seán
- Ó Liatháin, Séamas, 1877-1934
- Ó Lionáin, Uilliam, fl. 1770
- Ó Lochlainn, Colm
- Ó Lochlainn, Colm, 1899-1972
- Ó Lochlainn, Gearóid, 1884-1970
- Ó Lochlainn, Uaithne Mór, d.1617
- Ó Locháin, Mícheál (Logan, Michael J.) ; Richardson, Stephen
- Ó Loingsigh, Pádraig, 1756?-1838
- Ó Loinsigh, Pádraig (Lynch, Patrick) 1754/1757-1818)
- Ó Loinsigh, Uilliam,
- Ó Longáin, Micheál, 1765-1837
- Ó Longáin, Micheál Óg, 1766-1837
- Ó Longáin, Mícheál Óg (Michael Long), 1766–1837
- Ó Longáin, Mícheál Óg, 1766-1837
- Ó Longáin, Míchéal óg, 1766-1837
- Ó Longáin, Seosamh (Ióseph) (Long, O'Longan, Joseph), 1817–80
- Ó Longáin, Seosamh, 1817-1880
- Ó Longáin, Tomás (Langan, Tom - Captain Steel), fl 1798
- Ó Longáin family
- Ó Luachra, Fr. Micheál
- Ó Luanaigh, Dónall, 1941-
- Ó Luasa, Beirní, 1930-2016
- Ó Luchráin, Giolla Phádraig, d. 1612
- Ó Luchráin, Phádraig, d. 1612
- Ó Luing, Séamas Beag, 1863-1947
- Ó Luinín, Cathal
- Ó Luinín, Conchobhar, fl. 1652-1700
- Ó Luinín family
- Óláf, king of Man and the Isles, d. 1153
- Óláf Guthfrithson, king of Dublin and of Northumbria, d. 941
- Ó Lócháin, Micheál, 1836-1899
- Ó Lúbaigh, Liam, 1882-1948
- Ó Madagáin, Breandán
- Ó Maelchonaire family
- Ó Mainnín, Seán
- Ó Maoilchonaire, Domhnall, fl.1571
- Ó Maoilchonaire, Firbisigh
- Ó Maoilchonaire, Maoilechlainn
- Ó Maoilchonaire, Muirgheas, d.1543
- Ó Maoilchonaire, Muiris, fl. 1540-1556
- Ó Maoil Chonaire, Seán, fl. 16th century
- Ó Maoilchonaire, Seán, fl. 1540-1570
- Ó Maoil Chonaire, Tuileagna, fl. 1673
- Ó Maoilchonaire. Muirgheas, d.1543
- Ó Maoilchonaire family
- Ó Maoil Eoin, A(gaistín) S(ergius, 1901-1968
- Ó Maoileóin, Séamus, 1893-1959
- Ó Maoilriain, Conchúr, fl. 1811-1826
- Ó Maolcaoine, Pádraig, fl. 1938
- Ó Maolcatha, Risteárd
- Ó Maolchathaigh, Séamas, 1884-1968
- Ó Maolchathaigh, Séamus, 1884-1968
- Ó Maolchathaigh, Séamus, fl. 1963
- Ó Maolchonaire, Fearfeasa
- Ó Maolchonaire, Fearfeasa, fl. 1630-1646
- Ó Maolchonaire, Fearfeasa, fl. 1630–1646
- Ó Maolchonaire, Flaithrí (Conry, Florence) c.1560-1629
- Ó Maolchonaire, Flaithrí, 1561-1629 see Conry, Florence, archbishop of Tuam, 1561-1629
- Ó Maolchonaire, Flaithrí, 1561-1629 see Conry, Florence, archbishop of Tuam, 1561-1629,
- Ó Maolchonaire, Flaithrí, 1561-1629, see Conry, Florence, archbishop of Tuam, 1561-1629
- Ó Maolchonaire, Muiris (Maurice Conry), d. 1645
- Ó Maolchonaire family
- Ó Maoldomhnaigh (Maloney), Micheál (Michael), 1888-1934
- Ó Maoldoraidh family
- Ó Maolmhuaidh, Proinsias (Francis O'Molloy), d.1677
- Ó Maolruanaidh, Liam, 1873-1901
- Ó Maolruanaidh, Liam, see Rooney, William, 1873–1901
- Ó Maoláin, Micheál, 1833-1869
- Ó Maonaigh, Donnchadh (OFM) fl: 1617
- Ó Maonaigh, Donnchadh, fl. 1618
- Ó Maonaigh, Pádraig, c. 1816-1889
- Ó Maonaigh, Seán, c.1778-1819
- Ó Maonaigh, Seán, fl. 1808-1819
- Ó Mathghamhna, Eamon, d. 1822
- Ó Mathghamna, Eoin see O'Mahony, Eoin (‘Pope’), 1904–1970
- Ó Mathúna, Diarmuid, fl. 1790
- Ó Mathúna, Donncha Caoch, fl. 1715-c.1755
- Ó Mathúna, Finghinn, -1496
- Ó Mathúna, Pádraig, (Goldsmith)
- Ó Mathúna, Pádraig, 1925-2019
- Ó Mathúna, Pádraig, fl.1818-1840
- Ó Mealláin, Tarlach, fl. 1647
- Ó Mealláin, Toirdhealbhach, fl.1641–1647 : Ó Conchubhair, Toirdhealbhach Carrach, fl 1649
- Ó Mealláin, Toirdhealbhach, fl1641-1647
- Ó Meara, Muiris, d.2014
- Ó Melaghlin family
- Ó Meára, Pádraig, 1893-
- Ó Miadhacháin (Meehan), Liam 1874-1960
- Ó Miléadha, Pádraig
- Ó Miléadha, Pádraig, 1877-1947
- Ó Monacháin, Ailbhe 1889-1967
- Ó Moran, Jacques
- Ó Morchadha, Domhnaill, 1858-1935
- Ó Moráin, Tomás, fl.c.1820
- Ó Muimhneacháin, Aindrias, d. 1989
- Ó Muimhneacháin, Diarmuid, 1866-1934
- Ó Muimnhreacháin, Séamus Mór, c.1775-
- Ó Muircheartaigh, Micheál, 1930-
- Ó Muircheartaigh, Seán
- Ó Muireadhaigh, Peadar (Murray, Peter A.), c.1870-
- Ó Muirgheasa, Enrí, d. 1945
- Ó Muirgheasa, Seán, fl. 1840-1880
- Ó Muirgheasa, Éinrí, 1874-1945
- Ó Muirgheasa, Énrí
- Ó Muirgheasa, Énrí (Henry Morris), 1874-1945
- Ó Muiri, Lorcán, see Murray, Laurence, 1883-1941
- Ó Muirriain, Risteard, fl.1760s
- Ó Muirthe, Tomás
- Ó Muirthe, Tomás, 1882-1958
- Ó Muirthile, Tadhg, 1850-1940
- Ó Munghaile, Tomás, 1918-
- Ó Muraidheagh, Séamas c.1703-1767
- Ó Murchadha (Ó Murchú), Tadhg, 1896-1961
- Ó Murchadha, Diarmuid
- Ó Murchadha, Diarmuid, d.2011
- Ó Murchadha, Diarmuid, fl.1930
- Ó Murchadha, Domhnall
- Ó Murchadha, Domhnall, 1914-1991
- Ó Murchadha, Donncha, SJ, 1833-1896
- Ó Murchadha, Gearóid, 1901-1959
- Ó Murchú, Eoin
- Ó Murchú, Liam, 1929-
- Ó Murchú, Liam, 1929-2015
- Ó Murchú, Pádraig (Murphy, Canon Patrick), 1877-1971
- Ó Murchú, Pádraig, fl.1877
- Ó Murchú, Seán (na Ráithíneach), 1700-1762
- Ó Murchú, Seán, c.1923-1982
- Ó Murchú, Tadhg (1842-1928)
- Ó Murchú, Tadhg, 1896-1961
- Ó Murchú, Tadhg, 1908-1971
- Ó Murgheasa, Énrí, d. 1945
- Ó Murthuile, Seosamh Michael, SJ, 1905-1984
- Ó Máille, Micheál
- Ó Máille, Pádraig, 1876/78–1946
- Ó Máille, T.S.
- Ó Máille, Tomás, 1880-1938
- Ó Máille, Tomás, 1880–1938
- Ó Máille, Tomás, 1883-1938
- Ó Máirtín, Pádraig
- Ó Máirtín, Séamus
- Ó Míocháin, Tomás, fl.1756-1804
- Ó Mórdha, Brian, 1918-1986
- Ó Mórdha, Conall, fl. 1523-1537
- Ó Mórdha, Pilip B., d. 2004
- Ó Mórdha, Séamus P., 1915-2005
- Ó Neachtain, Joe Steve
- Ó Neachtain, Máirtín, 1933-2002
- Ó Neachtain, Seán, 1655-1728
- Ó Neachtain, Seán, c.1640-1729
- Ó Neachtain, Seán, c.1640-1729 ; Ó Neachtain, Tadhg, 1671-1752
- Ó Neachtain, Seán, c.1640–1729
- Ó Neachtain, Seán, c.1647–1729
- Ó Neachtain, Tadhg, 1671-1752
- Ó Neachtain, Tadhg, 1671-c.1752
- Ó Neachtain, Tadhg, 1671–c.1752
- Ó Neill, Pádraig, d. 2019
- Ó Nualláin, Brian (‘Flann O'Brien’), 1911-1966
- Ó Nualláin, Brian see O'Nolan, Brian, 1911-1966
- Ó Nualláin, Brian see O'Nolan, Brian, 1911-1966,
- Ó Nualláin, Caoimhín, 1917-1987
- Ó Nualláin, Ciarán, 1910-1983
- Ó Nualláin, Gearóid, 1874-1942
- Ó Nualláin, Labhrás, 1912-2000
- Ó Nualláin, Seán, 1926-2006
- Ó Néill, Aodh Dubh (O'Neill, Hugh), c.1605–c.1660
- Ó Néill, Aodh Mór, 1550-11616
- Ó Néill, Carlos, Marques de la Granja, d.2015
- Ó Néill, Desmond, 1927-2016
- Ó Néill, Eoghan, 1919-2007
- Ó Néill, Niall Frosach, 718-?
- Ó Néill, Pádraig, 1765-1832
- Ó Néill, Seán, 3rd Earl of Tyrone, 1599-1641
- Ó Néill, Seán, 3rd Earl of Tyrone, 1599-1641
O'Neill, John, conde de Tyrone, see Ó Néill, Seán, 3rd Earl of Tyrone, 1599-1641
- Ó Néill, Séamus, 1910-1981
- Ó Néill, Éinrí, king or lord of Tír Eoghain, d. 1489
- Ó Núnáin, Éamann, fl. 1790
- Ó Peatain family
- Ó Pronntaigh, Pádraig, c.1712-1763
- Ó Raghailligh, Aodh, fl.1640
- Ó Raghallaigh, Aodh, c.1581-1653
- Ó Raghallaigh, Micheál, 1783/84-1856
- Ó Raghallaigh, Micheál, c.1790-c.1853
- Ó Raghallaigh, Máirtín, fl. 1998
- Ó Raghallaigh, Uilliam
- Ó Raifeartaigh, Lochlainn, 1933-2000
- Ó Rathaille, Aodhagán, d. 1729
- Ó Rathaille, Aogán, 1670-1729
- Ó Rathaille, Aogán, 1670?-1728/9
- Ó Rathile, Tomás, 1882-1953
- Ó Riada, Seán, 1931-71
- Ó Riada, Seán, 1931-1971
- Ó Riain (Ryan), Diarmaid (Darby), 1777-1855
- Ó Riain, Diarmaid, 1777-1855
- Ó Riain, Liam Pádraig, 1867-1942
- Ó Riain, Mathúin, 1844-1937
- Ó Riain, Pádraig
- Ó Riain, Pádraig, 1939-
- Ó Riain, Séamus, 1917-2007
- Ó Riordáin, Seán, 1916-1977
- Ó Riordáin, Tomás (Tommy), 1928-2007
- Ó Rocháin, Muiris, 1944-2011
- Ó Rodaighe, Tadhg
- Ó Rodaighe, Tadhg, 1614-1706
- Ó Rodaighe, Tadhg , d.1706
- Ó Rodaighe, Tadhg, fl.1516
- Ó Rodaighe, Tadhg, fl. 1516
- Ó Rodaighe, Tadhg fl.1516
- Ó Ruairc, Aodh
- Ó Ruairc, Brian na Múrtha, -1591
- Ó Ruairc, Maonas, c. 1658-1750
- Ó Ruairc, Tadhg, d.1605
- Ó Ruairc family
- Ó Ríordáin, Sean P., d. 1957
- Ó Ríordáin, Seán (Pádraig), 1916-1977
- Ó Ríordáin, Seán, 1916-1977
- Ó Ríordáin, Seán Pádraig (1904–1957)
- Ó Ríordáin, Seán Pádraig, 1904–1957
- Ó Ríórdáin, Breandán, 1927-2017
- Ó Sabhaois, Tomás, 1919-2011
- Ó Saothraí, Séamus, 1927-2008
- Ó Scannail, Finín, fl. 1795
- Ó Scoireadh, Séamas
- Ó Seadhacháin, Seán,1901-1991
- Ó Seaghdha, Risteárd, c.1875
- Ó Searcaigh, Séamus, 1886-
- Ó Sheil family
- Ó Siadhail family
- Ó Siaghail, Seamas, fl. 1636-1640
- Ó Siaghail, Séamus, fl.1640
- Ó Siail family
- Ó Siochfhradha, Pádraig (‘An Seabhac’), 1883-1964
- Ó Siochfhradha, Pádraig, 1883-1964
- Ó Siochfhradha, Pádraig, 2883-1964
- Ó Sléibhín, Gearóid, 1919-1997
- Ó Snodaigh, Pádraig
- Ó Suilleabháin, Muiris, 1904-1950
- Ó Suilleabháin, Seán 'Irish', 1882-1957
- Ó Suilleabháin, Tadhg Gaelach (O'Sullivan, Timothy), 1715?-1795?
- Ó Sándair, Cathal, 1922-96
- Ó Sé, Anraí, d. 1907
- Ó Sé, Páidí
- Ó Sé, Seán, b. 1936
- Ó Sé, Tomás, 1978-
- Ó Síocháin, Micheál, 1870-1945
- Ó Síothcháin, Micheál, 1870-1945
- Ó Súilleabháin, Amhlaoibh, 1780-1838
- Ó Súilleabháin, Amhlaoibh, 1783-1838
- Ó Súilleabháin, Diarmaid, 1932-1985
- Ó Súilleabháin, Domhnall, 1790-1858
- Ó Súilleabháin, Donnchadh, 1913-1989
- Ó Súilleabháin, Eibhlín
- Ó Súilleabháin, Eoghan Rua (1748–1784)
- Ó Súilleabháin, Eoghan Rua, 1748-1784
- Ó Súilleabháin, Eoghan ‘Rua’, 1748–1784
- Ó Súilleabháin, Eóghan Óg (†1616)
- Ó Súilleabháin, Gearóid, 1891-1948
- Ó Súilleabháin, Micheál Chormaic, c.1800-1865
- Ó Súilleabháin, Muircheartaigh Óg, d.1754
- Ó Súilleabháin, Muiris, 1904-1950
- Ó Súilleabháin, Mícheál, b. 1950
- Ó Súilleabháin, Pádraig, 1874-1918
- Ó Súilleabháin, Seáinín Mhicil, 1914-1989
- Ó Súilleabháin, Seán, 1903-1996
- Ó Súilleabháin, Silbhester (O’Sullivan, Sylvester), 1756-1809
- Ó Súilleabháin, Séan, d.2023
- Ó Súilleabháin, Tadhg Gaelach, 1715-1795
- Ó Súilleabháin, Tomás Rua, 1785-1848
- Ó Súilleanbháin, Muiris, 1904-1950
- Ó Súilliobháin, Domhnaill, 1790-1858
- Ó Taidhg, Donnchadh, d. 1562
- Ó Tigernaig, Gilbert, bishop, d. c.1323
- Ó Tiomanaidhe, Tadhg
- Ó Tomaltaigh, Brian, c.1799-1871
- Ó Treasaigh, Lorcán, d.2006
- Ó Tuairisc, Eoghan, 1919-1982
- Ó Tuama, Pádraig (Peaití Thaidhg Pheig) -1968
- Ó Tuama, Seán, 1926-2006
- Ó Tuama, Seán, 1926–2006
- Ó Tuama, Seán 1926-2006
- Ó Tuama, Séan, 1926-2006
- Ó Tuama, Tomás fl.1780
- Ó Tuathaigh, Gearóid
- Ó Tuathaigh, M. A. G. (Gearóid)
- Ó Tuathail, Dónall, d. 1922
- Ó Tuathail, Eamonn, fl. 1934-1935
- Ó Túama, Aodh Óg
- Ó Urmhumha, Pádraig, 1897-1973
- Ó Comhraí, Eoghan, 1794-1862, see O'Curry, Eugene, 1794-1862
- Úa Caiside, Gilla Mo Dutu, fl. 1147
- Úa Cúanáin, Echtgus
- Úa Foiréidh, Aodh, bishop, d. 1056
- Úa Ríghbhardáin, Tadhg, fl. 1475
- Úa Síadail, Rechtgal
- Þorvaldr Konráðsson (Thorvald Konradsson) the Far Traveller