| "A hundred thousand welcomes" : unionism, nationalism, partition and the arrival of American forces in Northern Ireland in January 1942 | Topping, Simon | Article in Journal | | 2018 |
| "Gaulish" Megaliths in Ireland? Gall in Sanas Cormaic | Rodway, Simon | Article in Journal | | 2008 |
| "The view from Fleet Street" : Irish nationalist journalists in London and their attitudes towards empire, 1892-1898 | Sheehy, Ian D. | Article in Book | Four Courts Press | 2004 |
| 'A third road' : constitutional nationalism, militant republicanism, and non-violence in the Civil Rights era | Prince, Simon | Article in Book | Irish Academic Press | 2010 |
| 'An enduring grudge, a steadfast heart and a mettlesome mind' : militarism and the chiefly ethos in late-medieval and Renaissance Scottish Gaelic poetry | Conner, Craig | Article in Book | | 2025 |
| 'Buffoonery and easy sentiment' : popular Irish plays in the decade prior to the opening of the Abbey Theatre | Fitz-Simon, Christopher | Monograph or Collective Volume | Carysfort Press | 2011 |
| 'Dusky Doughboys' - African-American soldiers in Northern Ireland during the Second World War | Topping, Simon | Article in Journal | | 2022 |
| 'Fulachtaí Fia' Burnt areas and natural features at Randalstown and Simonstown, county Meath | Sweetman, David | Article in Journal | | 2018 |
| 'Mere Irish' in Ireland's parliaments and towns, 1316-1659 | McGrath, Bríd | Article in Book | NA | 2025 |
| 'Poised on the edge of absence' : Kavanagh and MacNeice in the shadow of war | Workman, Simon | Article in Book | | 2015 |
| 'Scottish peers' in seventeenth-century Ireland | Ohlmeyer, Jane | Article in Book | | 2016 |
| 'The sneering, lofty conception of what they call culture' : O'Casey, popular culture and the literary revival | Lonergan, Pat | Article in Book | | 2004 |
| 'Tis herself : a memoir | Nicoletti, JohnO'Hara, Maureen | Monograph or Collective Volume | Simon & Schuster | 2004 |
| 1798 : Some Galway-Mayo links | Higgins, Jim | Article in Journal | | 2002 |
| 1904 : richness and diversity without the Abbey | Fitz-Simon, Christopher | Article in Book | | 2004 |
| 5 October 1968 and the beginning of the troubles : flashpoints, riots and memory | Prince, Simon Peter | Article in Journal | | 2012 |
| 500 years after Martin Luther: the Reformation and its legacy in Kerry | Lumby, Simon J. | Article in Journal | | 2019 |
| A brief tour of the old gardens | Simon, Ben | Article in Book | | 2005 |
| A Briton in twelfth-century Santiago de Compostela | Young, Simon | Article in Journal | | 2003 |
| A Casino hidden in plain sight | Gilligan, Jack | Article in Journal | | 2018 |
| A child at the gate : Lily Dobbin's recollections | Bell, DorinDobbin, Lily | Article in Book | | 2005 |
| A common Celtic glossary of place-names | Le Moing, Jean-Yves | Article in Book | | 2012 |
| A currency crisis : modernist dialectics in 'The Countess Cathleen' | McAteer, Michael | Article in Book | | 2004 |
| A family group of teachers, 1740-1900 : the Grants of Newry | Fitzsimons, J. | Article in Journal | | 1947 |
| A genealogical history of the O'Reillys, written in the eighteenth century by E. Ó Raghallaigh, and incorporting portion of the earlier work of T. Fitzsimons, Vicar General of the diocese of Kilmore | Carney, James Patrick, 1914-1989Ó Raghallaigh, Eóghan | Monograph or Collective Volume | An Cumann Seanchais Bhreifne | 1959 |
| A history of Britain, vol. 2 : The British wars 1603-1776 | Schama, Simon | Monograph or Collective Volume | BBC | 2001 |
| A most distressing Breach of Promise case | Boland, Tim | Article in Journal | | 2017 |
| A previously unremarked Clann Eoin Mhoír genealogy | Kingston, Simon | Article in Journal | | 1998 |
| A short history of St John's Church, Limerick | Stewart, D. (Miss) | Monograph or Collective Volume | [St John's Church] | 1952 |
| A song to sweeten Ireland's wrong : music education and the Celtic revival | Stakelum, Mary | Article in Book | | 2004 |
| A treasured landscape : the heritage of Belvoir Park | | Monograph or Collective Volume | Forest of Belfast | 2005 |
| A view from the Mississippi | Dowling, Joe | Article in Book | | 2004 |
| A Visit of Two Irish Franciscans to North Wales in 1323. | Falileyev, Alexander | Article in Journal | | 2022 |
| A.D. 500 : a journey through the dark isles of Britain and Ireland | Young, Simon | Monograph or Collective Volume | Weidenfeld and Nicolson | 2005 |
| Accommodating the 'graces of sculpture': drawings by Giovanni Battista Cipriani for the attic statuary of the Casino at Marino | Laffan, WilliamMulligan, Kevin V. | Article in Journal | | 2013 |
| Accommodations with changing orders : the Church of Ireland, 1685-92 | Barnard, T. C. (Toby Christopher) | Article in Book | Four Courts Press | 2025 |
| Against ethnicity : democracy, equality, and the Northern Irish conflict | Prince, Simon | Article in Journal | | 2018 |
| Alba. Scottish place-names | Taylor, Simon | Article in Book | | 2012 |
| American influence on the Gaelic League : inspiration or control? | Ní Bhroiméil, Úna | Article in Book | | 2004 |
| An atlas for Celtic studies : archaeology and names in ancient Europe and early medieval Ireland, Britain, and Brittany | Karl, RaimundKoch, John T.Minard, AntoneÓ Faoláin, Simon | Monograph or Collective Volume | Oxbow Books | 2007 |
| An essay towards an historical account of Irish coins and of the currency of foreign monies in Ireland | Simon, James | Monograph or Collective Volume | | 1749 |
| An Ghaeilge trí shúile an Rúisigh sna 1780í: Сравнительные словари Peter Simon Pallas | Ó Fionnáin, Mark | Article in Journal | | 2021 |
| An iconological reading of the eighteenth-century mural decoration at 52 St Stephen's Green | Simon, Erika | Article in Journal | | 2011 |
| An Irish context to a Scottish disaster: James IV, the O’Donnells of Tyrconnell and the road to Flodden | Egan, Simon | Article in Book | | 2018 |
| An Irish perspective on empire : William Flavelle Monypenny and empire | Beaumont, Jacqueline | Article in Book | | 2004 |
| An Irish view of the white mountain : the 'Praelio Pragensis' of Henry Fitzsimon S.J. | Lilley, Mark James | Article in Book | | 2001 |
| An Tóstal and the first Dublin Theatre Festival : a personal memoir | Fitz-Simon, Christopher | Article in Book | | 2008 |
| An Trumpa Creda | O'Dwyer, Simon | Article in Journal | | 2000 |
| Anglo Republic : inside the bank that broke Ireland | Carswell, Simon | Monograph or Collective Volume | Penguin Ireland | 2011 |
| Appendix C : List of Bronze Daggers of Ogival Type from Graves in the British... | Adsimon, A. M. | Article in Journal | | 1954 |
| Archbishop James Ussher (1581-1656) and the Dutch Vossius family | Rademaker, Cornelis Simon Maria, 1930- | Article in Journal | | 2006 |
| Archbishop Simonds and the Myshall connection | Byrne, Edward | Article in Journal | | 1993 |
| Arthur Fitzsimons: 'Scheming inside forward' from Kilmacud | Sobolewski, Peter | Article in Journal | | 2017 |
| Arthur O'Leary : composer | Fitzsimons, Bob | Monograph or Collective Volume | Samhlaíocht Chiarraí | 1998 |
| Arthur O'Leary and Arthur Sullivan : musical journeys from Kerry to the heart of Victorian England | Fitzsimons, Bob | Monograph or Collective Volume | Doghouse | 2008 |
| As if it was yesterday : David Coburn's stories | Coburn, David | Article in Book | | 2005 |
| Asiatic Cholera and staggering - Bob : the Cholera epidemic of 1832-33 in Kerry | Fitzsimons, BobFitzsimons, Tom | Article in Book | | 1997 |
| Assisted emigration as Famine relief : lessons from the Lansdowne estate | Ó Gráda, Cormac ; Anbinder, Tyler ; Wegge, Simone A. | Article in Book | NA | 2020 |
| Bedding ceremonies | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Belfast and Derry in revolt : a new history of the start of the Troubles | Prince, SimonWarner, Geoffrey | Monograph or Collective Volume | Irish Academic Press | 2012 |
| Betham and Lodge | O'Byrne, Eileen | Article in Book | | 1996 |
| Beyond the Pale and the Highland Line : the Irish and Scottish Gaelic world | NA | Monograph or Collective Volume | Manchester University Press | 2025 |
| Big drummer to the emperor of Morocco : Arthur O'Leary (1834-1919), Tralee's first composer | Fitzsimons, Bob | Article in Journal | | 1998 |
| Bishop Simon Digby (c.1645-1720): a reappraisal of the nature and status of his artistic practice | Pegum, Caroline | Article in Journal | | 2012 |
| Breakfast with Anglo : a developer takes us inside the Irish property bubble : from muddy fields to bank boardrooms to the Four Courts | Kelly, Simon | Monograph or Collective Volume | Penguin Ireland | 2010 |
| Brigid of Kildare in early medieval Tuscany | Young, Simon | Article in Journal | | 1999 |
| Britain, Europe, and the world | Adams, Simon Lester | Article in Book | | 2001 |
| Britain, Ireland, and Europe, c.900–c.1100 | MacLean, Simon | Article in Book | | 2009 |
| British and Irish inventories : a list and bibliography of published transcriptions of secular inventories | Jervis, Simon Swynfen | Monograph or Collective Volume | Furniture History Society | 2010 |
| Camán and crozier : the Catholic church and the GAA, 1884-1902 | Gillespie, Simon,Hegarty, Roddy, | Article in Book | | 2009 |
| Cardinal Wolsey, the native affinities, and the failure of reform in Henrician Ireland | Fitzsimons, Fiona | Article in Book | | 2004 |
| Carrickmines Castle: Rise and fall | Clinton, Mark | Monograph or Collective Volume | Wordwell | 2019 |
| Catholic Parish Registers | Fitzsimons, Fiona | Article in Journal | | 2015 |
| Celtic poets, Indo-European poets, primitive poets, universal poets and Romantic poets, or: What is the point of comparative studies? | Rodway, Simon | Article in Book | | 2025 |
| Child of the Irish border : a memoir and family history | Fitzsimon, Nicholas | Monograph or Collective Volume | Somerville Press | 2010 |
| Children’s Happiness and Unhappiness in the Irish Workhouse Institution, 1850-1914 | Gallaher, Simon | Article in Book | | 2021 |
| Churching | Fitzsimons, Fiona | Article in Journal | | 2020 |
| Civil society in the stateless capital: charity and authority in Dublin and Edinburgh c.1815 - c.1845 | Curran, Joseph Simon | Thesis | | 2018 |
| Comparative law : home rule(s) | Lee, Simon | Article in Book | | 1990 |
| Concepts of national identity in the middle ages | | Monograph or Collective Volume | Leeds Studies in English | 1995 |
| Confessionalization and clan cohesion : Ireland's contribution to Scottish Catholic renewal in the seventeenth century | Spurlock, R. Scott | Article in Book | | 2016 |
| Conflict and conflict regulation in Northern Ireland : October 1968 to November 1985 | Murphy, Simon Francis | Thesis | | |
| Containing Antisemitism : Tolerance from Northern Ireland | English, Richard, 1963- | Article in Book | | 2007 |
| Contesting and upholding the rights of the Irish parliament in 1698 : the arguments of William Molyneux and Simon Clement | Léoutre, Marie | Article in Book | | 2014 |
| Contesting and upholding the rights of the Irish Parliament in 1698 : the arguments of William Molyneux and Simon Clement | Léoutre, Marie | Article in Journal | | 2014 |
| Conversion, the Bible and the Irish language : the correspondence of Lady Ranelagh and Bishop Dopping | Fitzsimon, Betsey Taylor | Article in Book | | 2005 |
| Convert rolls 1703-1849 and Catholic qualification rolls 1774-1845 | Fitzsimons, Fiona
| Article in Journal | | 2016 |
| Crafting a national identity : the Dun Emer guild, 1902-8 | Paterson, Elaine Cheasley | Article in Book | | 2004 |
| Creative inheritance | McQuillan, Deirdre | Article in Journal | | 2014 |
| Crown and Commonwealth | Simon, John Allsebrook, 1st viscount Simon, 1873-1954 | Monograph or Collective Volume | | 1953 |
| Cultural and political identity in the hagiography of Gaelic Ireland | Selvage, Courtney | Article in Book | NA | 2025 |
| Cure, superstition, infection and reaction : tuberculosis in Ireland, 1932 - 1957 | Guest, Simon | Article in Journal | | 2004 |
| Curtailing Kings: Ireland, the Cathar Crusade and the cult of Simon de Montfort | Duffy, Paul | Article in Book | | 2022 |
| Dán ar Phádraig Mac Síomóin | Ó Fiaich, Tomás | Article in Journal | | 1960 |
| Daniel O'Connor's account of the 1st Light Infantry Regiment of the Irish Legion intended for Venezuela, 1819-1820 | Chartrand, René | Article in Journal | | 2009 |
| Deadly sensationalism | Fitzsimons, Eleanor | Article in Journal | | 2013 |
| Deaf records | Fitzsimons, Fiona | Article in Journal | | 2017 |
| Delusions of Dál Riada : the co-ordinates of Mac Domnaill power, 1461-1550 | Kingston, Simon | Article in Book | | 2001 |
| Dirty war? Targeting terrorists in Northern Ireland | Kingston, Simon | Article in Book | | 2007 |
| DNA as a source for family history | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Donatus, Bishop of Fiesole 829-76, and the cult of St Brigit in Italy | Young, Simon | Article in Journal | | 1998 |
| Dublin in the thirteenth century : the making of a colonial capital city | Watt, J. A. | Article in Book | | 1986 |
| Dun Laoghaire : Dublin's asylum harbour | FitzSimon, Christopher | Article in Journal | | 1977 |
| Early medieval mills in Ashbourne, Co. Meath | Lancaster, Simon | Article in Journal | | 2006 |
| Edition du 'Catalogus praecipuorum sanctorum Hiberniae' de Henri FitzSimon | Fitzsimon, Henri,Grosjean, Paul | Article in Book | | 1995 |
| Eighteenth century European scholarship and nineteenth century Irish literature : Synge's 'Tinker's Wedding' and the orientalizing of Irish gypsies | Burke, Mary | Article in Book | | 2004 |
| Eleven houses : a memoir of childhood | Fitz-Simon, Christopher | Monograph or Collective Volume | Penguin Ireland | 2007 |
| Embroidered spectacle : Celtic revival as aristocratic display | Helland, Janice | Article in Book | | 2004 |
| Essay on Irish coins, and of the currency of foreign moneys in Ireland. With Mr T[homas] Snelling's supplement | Simon, JamesSnelling, Thomas | Monograph or Collective Volume | | 1810 |
| Estate records as a source for family history | Fitzsimons, Fiona | Article in Journal | | 2015 |
| Evidence in folklore for Irish family history | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Excavations of a medieval ringwork at Ballysimon, county Limerick | Collins, TracyCummins, Anthony | Monograph or Collective Volume | Aegis | 2001 |
| Exit wounds : murder, diaspora and the Irish troubles : an Irish-Australian story | Adams, Simon, 1968- | Monograph or Collective Volume | Crossing Press | 2000 |
| Explaining Uladh : cultural nationalism in Ulster | Hay, Marine | Article in Book | | 2004 |
| Explaining Uladh : cultural nationalism in Ulster | Hay, Marnie | Article in Book | | 2004 |
| Exploring the world of the Celts | James, Simon, 1957- | Monograph or Collective Volume | Thames & Hudson | 1993 |
| Fairy imposters in county Longford in the Great Famine | Young, Simon | Article in Journal | | 2012 |
| Father Henry Fitzsimon, S. J., 1566-1643 | Corboy, James | Article in Journal | | 1943 |
| Field Survey of Middlequarter, Newtown & Killongford, Co Waterford | Dowling, SimonKnight-O'Connor, Christina : Cantwell, Eddie | Article in Journal | | 2017 |
| Finding burial records | Fitrzsimons, Fiona | Article in Journal | | 2022 |
| For the cause of liberty : a thousand years of Ireland's heroes | Golway, Terry | Monograph or Collective Volume | Simon and Schuster | 2000 |
| Fosterage and Gossiprid in late medieval Ireland : some new evidence | Fitzsimons, Fiona | Article in Book | | 2001 |
| Fr Henry Gill, SJ | Carwsell, Simon | Article in Book | | 2014 |
| Franciscan Rossnowlagh | O'Byrne, Simon | Monograph or Collective Volume | Franciscan Community | 1978 |
| French Canadians and the Irish question, 1900-21 | Jolivet, Simon | Article in Book | | 2009 |
| From manuscripts to street signs via 'Séadna : the Gaelic League and the changing role of literacy in Irish, 1875-1915 | Mac Mathúna, Liam | Article in Book | | 2004 |
| From Moneygall to the White House, Eneclann's Fiona Fitzsimons traces President Barack Obama's Irish ancestry back to a small village in Co. Offaly | Fitzsimons, Fiona | Article in Journal | | 2011 |
| From Scandinavia to the Wirral | Bean, Simon C.Jesch, Judith | Article in Book | | 2000 |
| Gaelic sovereignty in the later middle ages | MacGregor, Martin | Article in Book | | 2025 |
| Gendering resistance within an Irish Republican prisoner community : a conversation with Laurence McKeown | Sharoni, Simona | Article in Journal | | 2000 |
| Gendering the asylums : Ireland and Scotland, 1847-1877 | Walsh, Oonagh | Article in Book | | 1999 |
| General Arthur Sandes : a South American hero | MacMahon, Bryan, 1949- | Article in Journal | | 2008 |
| Geological mapping and the geographies of proprietorship in Nineteenth-Century Cornwall | Naylor, Simon | Article in Book | | 2011 |
| Giving life and limb for empire : gender and occupational health in industrial Belfast, 1870-1914 | Purdue, Simon | Article in Journal | | 2019 |
| God's general : Cromwell the soldier | Robbins, Simon | Monograph or Collective Volume | Sutton | 2003 |
| Goliath and the boy David : Henry Fitzsimon, James Usher and the birth of Irish religious debate | Ford, Alan, 1956- | Article in Book | | 2016 |
| Government policy and the Fenians in the 1860s | FitzSimon, Robert D. | Thesis | | 1965 |
| Great houses of Ireland | Montgomery-Massingberd, HughSykes, Christopher Simon | Monograph or Collective Volume | Laurence King | 1999 |
| Grim scars of the Great Hunger : orphaned and abandoned children in the workhouses during the 1850s and 1860s | Gallaher, Simon | Article in Book | | 2018 |
| Hákon IV : the last Norse king of the Hebrides - and Ireland? | Egan, Simon | Article in Book | NA | 2021 |
| Hamilton, Rodrigues, and the quaternion scandal | Altmann, Simon L. | Article in Book | | 2009 |
| Henry Fitzsimon, the Irish Jesuits and Catholic identity in the early modern period | Jackson, Brian | Article in Book | | 2013 |
| Henry VII : the first Tudor king | Simons, E. N. | Monograph or Collective Volume | | 1968 |
| Herald's Visitations in Ireland (Kindred Lines) | Fitzsimons, Fiona | Article in Journal | | 2025 |
| Hillsborough : an illustrated history and companion | Walker, Simon, 1970- | Monograph or Collective Volume | Cottage Publications | 1994 |
| Histoire des Îles Britanniques | Bensimon, FabriceLachaud, FrédériqueLebecq, StéphaneRuggiu, François-Joseph | Monograph or Collective Volume | PUF | 2007 |
| Historic Ulster Churches | Walker, Simon, 1970- | Monograph or Collective Volume | Institute of Irish Studies, Queen's University Belfast | 2000 |
| How Anglo-Norman names were Hibernicised | Fitzsimons, Fiona | Article in Journal | | 2019 |
| How old is that oak? | Brown, David M. | Article in Book | | 2005 |
| Howard Mausoleum, Kilbride, Co. Wicklow | Rees, Jim | Article in Journal | | 2013 |
| Huguenot records | Fitzsimons, Fiona | Article in Journal | | 2017 |
| If trees could talk : the story of woodlands around Belfast | Simon, Ben | Monograph or Collective Volume | Forest of Belfast | 2009 |
| Immigrants and savers : a rich new database on the Irish in 1850s New York | Anbinder, TylerWegge, Simone A.Ó Gráda, Cormac | Article in Journal | | 2017 |
| In gentibus dis persisti nos : the British diaspora in Patrick and Gildas | Young, Simon | Article in Journal | | 2003 |
| In holy terror : reporting on the Ulster troubles | Winchester, Simon | Monograph or Collective Volume | Faber | 1974 |
| In ruins : the once great houses of Ireland | Marsden, SimonMcLaren, Duncan | Monograph or Collective Volume | Bulfinch | 1997 |
| Incident at Cloncurry | Harris, Joseph | Article in Book | | 1998 |
| Inflamed with seraphic ardor : Franciscan learning and spirituality in the fourteenth-century Irish pilgrimage account | Krasnodebska-D'Aughton, Malgorzata | Article in Journal | | 2012 |
| Inquisitions post mortem and inquisitions post attainder - lesser-used sources for Irish genealogy | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Introduction | Taylor, Simon, 1950- | Article in Book | | 1998 |
| Introduction : beyond the Pale and the Highland line | Egan, Simon | Article in Book | | 2025 |
| Introduction : empire, propaganda and public opinion | Potter, Simon J. | Article in Book | | 2004 |
| Introduction : Union and separation | Edwards, David, 1963- | Article in Book | | 2016 |
| Inventing invention | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Ireland and the barons' wars | Frame, Robin | Article in Book | | 1986 |
| Ireland and the French theatre | Davies, Simon | Article in Book | | 1999 |
| Ireland through the stereoscope : reading the cultural politics of theosophy in the Irish literary revival | Guinness, Selina | Article in Book | | 2004 |
| Ireland, 1760-1855 | Simes, Douglas | Article in Book | | 2002 |
| Irish and Armenian Ecclesiastics in Medieval Iceland | Cormack, Margaret | Article in Book | | 2007 |
| Irish chapbooks in the Huntington Library | Simons, John | Article in Journal | | 1994 |
| Irish convict transportation and the reach of the state in late Hanoverian Britain | Devereaux, Simon | Article in Journal | | 1997 |
| Irish geneologies : a useful source or just propaganda? | Fitzsimons, Fiona | Article in Journal | | 2014 |
| Irish Jesuits and the evolution of religious controversy: an episode from the 1630s | Jackson, Brian | Article in Book | | 2022 |
| Irish participation in Bolívar's campaigns | Naranjo Martínez, Enrique | Monograph or Collective Volume | Columbia Publishing Service | 1937 |
| Irish political data 1995 | King, SimonMarsh, MichaelMcElroy, GailWilford, Rick | Article in Journal | | 1996 |
| Irish reactions to a French bestseller | Davies, Simon | Article in Journal | | 1997 |
| Irish Reproductive Loan Fund Institution (RLFI) | Fitzsimons, Fiona | Article in Journal | | 2021 |
| Irish schools' registers | Fitzsimons, Fiona | Article in Journal | | 2016 |
| Irish soldiers in South America, 1818-30 | Lambert, Eric | Article in Journal | | 1969 |
| Irish sources in Kensington Public Library | De Montfort, Simon L. M. | Article in Journal | | 2000 |
| Irish swordsmen in the imperial service in the 30 years war | Fitzsimon, Robert Daley | Article in Journal | | 1969 |
| Irish theatre | Fitz-Simon, Christopher | Monograph or Collective Volume | Eason | 1979 |
| Iron age wedding trumpets? | O'Dwyer, MariaO'Dwyer, Simon | Article in Journal | | 2013 |
| Is family history 'real' history? | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Ismael Fitzadam agus Simon Macken - teaghlach liteartha as Achadh hon | Mac Annaidh, Séamus | Article in Journal | | 1993 |
| Itineraria Symonis Simeonis et Willelmi de Worcestre | | Monograph or Collective Volume | | 1778 |
| Itinerarium Symonis Semeonis ab Hybernia ad Terram Sanctam | | Monograph or Collective Volume | | 1960 |
| Itinerarium Symonis Simeonis ab Hybernia ad Terram Sanctam. (translated) | Symon Simeonis | Article in Book | | 1952 |
| James Boswell et l’énigme corse | Messina, Simone Carpentari | Article in Book | | 1995 |
| James IV, the O'Donnells of Tyrconnell and the road to Flodden. The Irish context of a Scottish disaster | Egan, Simon | Article in Journal | | 2016 |
| James Ryan (c.1770-1847) and the problem of Irish 'new technology' in British mines in the early nineteenth century | Torrens, Hugh Simon | Article in Book | | 1997 |
| Janico Dartasso : Chivalry, Nationality and the Man-at-Arms | Walker, Simon | Article in Journal | | 1999 |
| John Bull's other empire : Roger Casement and the press, 1898-1916 | Mitchell, Angus | Article in Book | | 2004 |
| Kerry County infirmary | Fitzsimons, Bob | Article in Journal | | 2010 |
| Kindred Lines : army discharge records | Fitzsimons, Fiona | Article in Journal | | 2020 |
| L'Irlande, le Quebec et les nationalismes, 1914-1918 (Premiere Partie) : la position des nationalistes Irlandais et Canadiens-Francais de 1914 a 1916 | Jolivet, Simon | Article in Journal | | 2006 |
| Les représentations des nationalistes irlandais et des Communards français dans Punch (1860-1880) | Lenoir, Marion | Article in Book | | 2006 |
| Les usages français de Daniel O'Connell, des dernières années de la Restauration à la Deuxième République | Colantonio, Laurent | Article in Book | | 2006 |
| Liberalism, nationalism, and religion in Britain and Ireland in the nineteenth century | Bew, Paul | Article in Book | | 1997 |
| Life in the big house : the Wilson family at Belvoir Park | Mitchell, John | Article in Book | | 2005 |
| Light on distant hills : a memoir | O'Searcaigh, Cathal | Monograph or Collective Volume | Simon & Schuster | 2009 |
| Limerick's economy in the Second World War | O'Duffy, Simon | Article in Book | | 2006 |
| Little gypsy : a life of freedom, a time of secrets | Freeman, Roxy | Monograph or Collective Volume | Simon and Schuster | 2011 |
| Living on the Edge : Scandinavian Dublin in the Twelfth Century | Downham, Clare | Article in Book | | 2007 |
| Lordship and dynasty in the late medieval Irish sea world : the Hiberno-Scottish nexus | Egan, Simon | Article in Journal | | 2019 |
| Louth milling companies | Lancaster, Simon | Article in Journal | | 2010 |
| Love's civil war : Elizabeth Bowen and Charles Ritchie : letters and diaries 1941-1973 | | Monograph or Collective Volume | Simon & Schuster | 2009 |
| Lunatic asylum records | Fitzsimons, Fiona
| Article in Journal | | 2017 |
| Making a difference : the story of the Simon Community in Northern Ireland | Courtney, Roger | Monograph or Collective Volume | Simon Community Northern Ireland | 1992 |
| Manning : Anglican and Catholic | | Monograph or Collective Volume | | 1951 |
| Mansions, museums and commissioners : an architectural history of the Office of Public Works on St Stephen's Green | Lincoln, Simon | Monograph or Collective Volume | Irish Architectural Archive | 2002 |
| Master John O'Hare N.T. 1888-1929 : a past principal of Burren school | Fitzsimons, J. | Article in Journal | | 1989 |
| Maughold of Man | Fitzsimons, Eilis | Article in Journal | | 2003 |
| Medical drawings. William Wallace Papers, Royal College of Surgeons in Ireland | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Medical history of Tralee 1763-2010 : evolving hospital care through the prism of poverty and disease | Fitzsimons, Robert | Monograph or Collective Volume | Independently published - Robert Fitzsimons | 2021 |
| Medicine and society in 19th century Kerry. A life of Francis Crumpe M.D. | Fitzsimons, Bob | Article in Journal | | 1994 |
| Memories of Cloghran | Fitzsimons, Christie | Article in Journal | | 2002 |
| Michaelangelo - after four centuries | MacGreevy, Thomas | Article in Journal | | 1965 |
| Mid to late Holocene relative sea-level and sedimentary changes in southwest Ireland | Delaney, Catherine A.,Devoy, Robert J.N.,Jennings, Simon C. | Article in Book | | 2012 |
| Migration to Australia mid-nineteenth century; emigration from the Shirley estate at the time of the Famine | James, StephanieMcClaughlin, TrevorO'Reilley, Simon | Article in Journal | | 2010 |
| Mill statistics of the mid-19th century | Lancaster, Simon | Article in Journal | | 2009 |
| Morgue and coroners' records | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Mr Kennedy Miller's very capable company of Irish players
. | Fitz-Simon, Christopher | Monograph or Collective Volume | Dublin City Public Libraries | 2011 |
| Mythologising a movement: Northern Ireland's '68 | Prince, Simon | Article in Journal | | 2008 |
| Narrative and the start of the Northern Irish troubles : Ireland’s revolutionary tradition in comparative perspective | Prince, Simon | Article in Journal | | 2011 |
| Nation and race in medieval Ireland | Lydon, James F. | Article in Book | | 1995 |
| Nationalist and unionist attitudes to empire in the age of the South African War, 1899-1902 | Lowry, Donal | Article in Book | | 2004 |
| Naturalism and the Literary Politics of Irish Modernist Fiction | Joyce, Simon | Article in Book | | 2019 |
| Naturalism and the Literary Politics of Irish Modernist Fiction | Joyce, Simon | Article in Book | | 2019 |
| Neither the boghole nor Berlin : drama in the Irish language from then until now | Titley, Alan | Article in Book | | 2004 |
| Networks and opportunities : a digital history of Ireland’s great famine refugees in New York | Anbinder, TylerWegge, Simone A.Ó Gráda, Cormac | Article in Journal | | 2019 |
| Newspaper death notices | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Newspapers and empire in Ireland and Britain : reporting the British Empire, c.1857-1921 | | Monograph or Collective Volume | Four Courts | 2004 |
| Northern Ireland's '68 : civil rights, global revolt and the origins of the Troubles | Prince, Simon | Monograph or Collective Volume | Irish Academic Press | 2007 |
| Northern Ireland’s ’68: Civil Rights, global revolt and the origins of the Troubles | Prince, Simon | Monograph or Collective Volume | Irish Academic Press | 2018 |
| Not just Europeanization, not necessarily populism : potential factors underlying the mobilization of populism in Ireland and Poland | Fitzgibbon, JohnGuerra, Simona | Article in Journal | | 2010 |
| Notes on the Richardsons of Richmount and Richfort | De Montfort, Simon L. M. | Article in Journal | | 1978 |
| Notes. Lieut.-Colonel [Samuel] Ernest Sydney FitzSimon M.B.E. (Mil.), S.C. (b. 6 Feb.1892; d. 25 Dec. 1974) | Ferguson, Kenneth | Article in Journal | | 2022 |
| Oak fingerprints : where did that oak come from? | Clarke, StephenFleming, Colin | Article in Book | | 2005 |
| Obituaries. Simon Quinn 1921-2011 | O'Brien, Dermot | Article in Journal | | 2011 |
| Oliver Hill in Killiney : a Irish Victorian house remodelled | Lincoln, Simon | Article in Journal | | 1996 |
| Ómos do Máire Mhaith | Marshall, Catherine | Article in Journal | | 2010 |
| On Exhibit | Gibson, William H. | Article in Journal | | 2008 |
| On the Irish 'peregrini' in Italy | Young, Simon | Article in Journal | | 2002 |
| Ordnance Survey employment records | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Ordnance Survey employment records | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Our men in Scotland : the Gaelic Irish nobility and the Scottish Renaissance court, c.1400-c.1600 | Egan, Simon | Article in Book | | 2024 |
| Outrage reports | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Parties, issues and personalities : the structural determinants of Irish voting behaviour from 1885 to 2000 | King, Simon | Thesis | | |
| Patrick Fitzsimon and Springfield College | Ó Murchadha, Ciarán | Article in Journal | | 2019 |
| Place-names and literature : evidence from the Gaelic ballads | Meek, Donald E. | Article in Book | | 1998 |
| Place-names and the early church in eastern Scotland | Taylor, Simon, 1950- | Article in Book | | 1996 |
| Place-names as a resource for the historical linguist | Ó Maolalaigh, Roibeard | Article in Book | | 1998 |
| Placename studies in Scotland and the Onomasticon | Taylor, Simon | Article in Book | | 2011 |
| Players and painted stage : aspects of the twentieth century theatre in Ireland | | Monograph or Collective Volume | New Island | 2004 |
| Plays and controversies | Grene, Nicholas | Article in Book | | 2004 |
| Poor Law Union Archives - one of the biggest untapped resources for Irish family history | Fitzsimons, Fiona | Article in Journal | | 2015 |
| Postcolonialism, ethnicity and the National Museum of Ireland | Kirwan, Alan | Article in Book | | 2011 |
| Prehistoric music in Ireland | O'Dwyer, Simon | Monograph or Collective Volume | Tempus | 2004 |
| Presbyterian records (including Covenanters & Seceders) | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Prison photographs | Fitzsimons, Fiona | Article in Journal | | 2016 |
| Protestant population decline in Westport, 1911-1926 | Roughneen, Simon | Article in Journal | | 2000 |
| Quaker records in Ireland | Fitzsimons, Fiona | Article in Journal | | 2016 |
| Racial tensions and U.S. military (in)justice in Northern Ireland during World War II | Topping, Simon | Article in Journal | | 2017 |
| Raids and reprisals : Ireland, eyewitness (1923) | Téry, Simone | Article in Journal | | 1985 |
| Raising the Irish Militia | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Reading experience 1700-1840 : an annotated register of sources for the history of reading in the British Isles | Colclough, Stephen | Monograph or Collective Volume | Simon Eliot | 2000 |
| Rebel Kerry : from the pages of the Kerryman | | Monograph or Collective Volume | Mercier Press | 2017 |
| Reconstructing Irish Catholic origins after the Reformation | Ryan, Salvador | Article in Book | | 2012 |
| Reconstruction of hydrological drought in Irish catchments (1850-2015) | Murphy, ConorNoone, Simon | Article in Journal | | 2020 |
| Reconstruction of hydrological drought in Irish catchments (1850–2015). | Murphy, ConorNoone, Simon | Article in Book | | 2021 |
| Records of the Court of Petty Sessions, c.1822-1924 | Fitzsimons, Fiona | Article in Journal | | 2024 |
| Records of the Irish Land Commission | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Records of the Irish Land Commission | Fitzsimons, Fiona | Article in Journal | | 2014 |
| Records of the Irish Land Commission | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Registers of licences to pass beyond the seas, 1573-1677 | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Registers of successful vaccinations | Fitzsimons, Fiona | Article in Journal | | 2020 |
| Remaking democracy : Ireland as a role-model the 2019 Peter Mair lecture | Hix, Simon | Article in Journal | | 2020 |
| Revivalist archaeology and museum politics during the Irish revival | Crooke, Elizabeth | Article in Book | | 2004 |
| Revivalist belligerence : three controversies | McDiarmid, Lucy | Article in Book | | 2004 |
| Rí Érenn, rí Alban : kingship and identity in the ninth and tenth centuries | Herbert, Máire | Article in Book | | 2000 |
| Richard FitzRalph : his life, times and thoughts | | Monograph or Collective Volume | Four Courts | 2013 |
| Richard II and the wider Gaelic world : a reassessment | Egan, Simon | Article in Journal | | 2018 |
| Robert Lynd paradox and the Irish revival : 'acting-out' or 'working-through' | Peatling, Gary K. | Article in Book | | 2004 |
| Romance Society and its Discontents : Romance Motifs and Romance Consequences in The Song of Dermot and the Normans in Ireland | Meecham-Jones, Simon | Article in Book | | 2008 |
| Saint Caelan of Kilclief | Fitzsimons, Eilis | Article in Journal | | 1992 |
| Saint Torannan of Ballyhornan | Fitzsimons, Eilis | Article in Journal | | 1993 |
| Schulze marriage register, 1806-37 | Fitzsimons, Fiona | Article in Journal | | 2020 |
| Scots Catholics in Ulster, 1603-41 | Mac Cuarta, Brian | Article in Book | | 2016 |
| Scottish officials and secular government in early Stuart Ireland | Edwards, David, 1963- | Article in Book | | 2016 |
| Scottish Protestant clergy and the origins of dissent in Ireland | Ford, Alan | Article in Book | | 2016 |
| Scottish settlement and society in Plantation Ulster, 1610-40 | Roulston, William | Article in Book | | 2016 |
| Sex and subversion in late medieval and early modern Scottish verse : finding fresh perspectives on the poem 'Éistibh a lucth an tigh-se' in the Book of the Dean of Lismore | Farron, Georgina Lee | Article in Book | | 2025 |
| Shipbuilding in Ireland in the nineteenth century | Moss, Michael S. | Article in Book | | 1993 |
| Silencing Irish Ulster : official depictions of plantation-era Ulster during the reign of James I, c. 1608-25 | Heffernan, David | Article in Book | | 2025 |
| Simon Butler - United Irishman | Butler, George | Article in Journal | | 1972 |
| Simon Butler and the forgotten role of the Church of Ireland during the 1798 rising | Comerford, Patrick | Article in Journal | | 2000 |
| Simon Coleman R.H.A. and the Irish Folklore Commission: Fieldwork in north county Galway in 1959 | Lysaght, Patricia | Article in Journal | | 2010 |
| Simon Fitzsimon's journey to the Holy Land in 1323 | Krasnodebska-D'Aughton, Malgorzata | Article in Book | | 2015 |
| Simon Harris, 2024-5 | Leahy, Pat | Article in Book | | 2025 |
| Simon Macken : Fermanagh scribe and schoolmaster | Ó Mórdha, Séamus | Article in Journal | | 1959 |
| Simon Roche of Ballygow | O'Leary, Jack | Article in Journal | | 2013 |
| Simon Vierpyl (c.1725-1810), sculptor and stonemason | Byrne, Helen | Article in Book | | 2001 |
| Simon's essay on Irish coins. | Simon, James | Monograph or Collective Volume | | 1810 |
| Sir Cloudesley Shovell : Stuart admiral | Harris, Simon | Monograph or Collective Volume | Spellmount | 2000 |
| Sir William Betham's manuscripts | Phair, P. B. | Article in Journal | | 1972 |
| Slate : a forgotten graveyard | Fitzsimons, Hannah | Article in Journal | | 1975 |
| Some notes on Irish fairy changelings in nineteenth-century newspapers | Young, Simon | Article in Journal | | 2013 |
| Something rotten : Irish banking scandals | Carswell, Simon | Monograph or Collective Volume | Gill & Macmillan | 2006 |
| Sources for childrem raised in Care in Ireland 1840s to 1990s | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Sources for children in institutional care in Ireland, 1840s-1990s | Fitzsimons, Fiona | Article in Journal | | 2014 |
| Sources for children raised in care in Ireland 1840s to 1990s | Fitzsimons, Fiona | Article in Journal | | 2013 |
| Sources for Irish labour studies in the Public Record Office, London | Fowler, Simon | Article in Journal | | 1996 |
| St. Patrick's Day in Peru, 1824 | McGinn, Brian | Article in Journal | | 2005 |
| St. Simon's: 50 years, 1930-1980 | Mason, Edwin | Monograph or Collective Volume | [St Simon's parish] | 1980 |
| Swans fly in Modreeney | Graham, Simon | Article in Journal | | 1996 |
| Swift, the church, and the “improvement of Ireland” | Hayton, D. W. (David William) | Article in Book | | 2013 |
| Tenants no more : [voices from an Irish townland, 1811-1901 and the great migration to Australia and America] | Simons, P. Frazier | Monograph or Collective Volume | Prowling Tiger Press | 1996 |
| Thatched cottages in county Meath. Vol.1 | Fitzsimons, J. | Monograph or Collective Volume | Kells Publishing Company Ltd | 1990 |
| The 'Irish' play on the London stage, 1990-2004 | Roche, Anthony | Article in Book | | 2004 |
| The 'Mayophone' : an ancient reed instrument from the west of Ireland | O'Dwyer, Simon | Article in Journal | | 2002 |
| The 'Northern Star' and the propagation of enlightened ideas | Davies, Simon | Article in Journal | | 1990 |
| The 1939 Register | Fitzsimons, Fiona | Article in Journal | | 2021 |
| The Abbey Theatre : Ireland's national theatre, the first 100 years | FitzSimon, Christopher | Monograph or Collective Volume | Thames & Hudson | 2003 |
| The Alphabet Book of Amos Lewis : An Elizabethan Calligraphic Manuscript Revealed | Lewis, Amos | Monograph or Collective Volume | John Adamson | 2024 |
| The archaeological history of hermitages and eremitic communities in medieval Britain and beyond | Roffey, Simon | Monograph or Collective Volume | Routledge | 2023 |
| The army PR men of Northern Ireland | Hoggart, Simon | Article in Book | | 1996 |
| The art of reduction | Marshall, Catherine | Article in Journal | | 2006 |
| The arts in Ireland : a chronology | Fitz-Simon, Christopher | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| The arts in Ireland : a chronology | FitzSimon, Christopher | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| The boys : a double biography | Fitz-Simon, Christopher | Monograph or Collective Volume | Nick Hern | 1994 |
| The Catalogus praecipuorum sanctorum Hiberniae, sixty years on | Ó Riain, Pádraig | Article in Book | | 2000 |
| The civil rights movement in Northern Ireland during the 1960s | Prince, Simon | Thesis | | |
| The construction of argument : Henry Fitzsimon, John Rider and religious controversy in Dublin, 1599-1614 | Jackson, Brian | Article in Book | | 2005 |
| The Cuala Press : Women, publishing, and the conflicted genealogies of "feminist publishing" | Murray, Simone | Article in Journal | | 2004 |
| The decline of lawn tennis in Ireland around the turn of the twentieth century : bad management, bad luck, or bad homburg? | Eaves, Simon J.Lake, Robert J. | Article in Journal | | 2020 |
| The discourses of Irish Jewish Studies: Bernard Shaw, Max Nordau, and evocations of the cosmopolitan | Watt, Stephen | Article in Book | | 2018 |
| The dog in the night-time : the Freeman's Journal, the Irish Parliamentary Party and the empire, 1875-1919 | Larkin, Felix M. | Article in Book | | 2004 |
| The Dublin theatre during the years leading up to the opening of the Abbey Theatre | Fitz-Simon, Christopher | Article in Journal | | 2000 |
| The Duc de Lauzun | Norton, LucySaint-Simon, Louis de | Article in Journal | | 1990 |
| The early Irish harp | Chadwick, Simon | Article in Journal | | 2008 |
| The emergence of the Kingdom of England | Keynes, Simon | Article in Book | The British Library | 2018 |
| The English lordship of Ireland and the Irish Sea world : re-assessing the origins of the Kildare ascendancy, c.1390-c.1513 | Egan, Simon | Article in Journal | | 2024 |
| The fate of the 'Illegitimate' child: An analysis of Irish Social Policy in the period: 1750-1952 | McCoughren, SimonePowell, Fred | Article in Book | | 2017 |
| The first years of the Fagel collection in Trinity College, Dublin | Braches, Ernst | Article in Book | | 1991 |
| The forgotten powerhouse : analyzing the brief rise to prominence of lawn tennis in Ireland in the late-nineteenth century | Eaves, Simon J.Lake, Robert J. | Article in Journal | | 2019 |
| The French expedition to Candie, 1668-9 | Ó hAnnracháin, Eoghan | Article in Journal | | 2013 |
| The Gaelic lordship of west Bréifne : a strategic conundrum of the Elizabethan wars in Ireland | Kelly, Francis | Article in Book | | 2025 |
| The Gàidhealtacht, the Gordon earls and the Scottish crown, c.1450-1600 | Hodge, Arkady | Article in Book | | 2025 |
| The global revolt of 1968 and Northern Ireland | Prince, Simon | Article in Journal | | 2006 |
| The golden years of an Irish emigrant : step by step | Corkery, Simon | Monograph or Collective Volume | Stockwell | 1991 |
| The governmentality of reconciliation : adult education as a community relations technique in Northern Ireland | Smala, Simone | Article in Journal | | 2012 |
| The great Delvin | Fitzsimons, Hannah | Monograph or Collective Volume | Reprint Ltd | 1979 |
| The greatest knight : the remarkable life of William Marshal, the power behind five English thrones | Asbridge, Thomas | Monograph or Collective Volume | Simon and Schuster | 2015 |
| The historical atlas of breeding birds in Britain and Ireland, 1875-1900 | | Monograph or Collective Volume | T. & A.D. Poyser | 1996 |
| The history of Belvoir Park | Simon, Ben | Article in Book | | 2005 |
| The History of the town of Monaghan in Memorials and Maps. Volume 1, Volume 2 | FitzSimons, Eamonn | Monograph or Collective Volume | self published | 2023 |
| The immense furnace of Annahala and the parsimony of the landlord | Collins, J. F. | Article in Journal | | 2003 |
| The imperial service of William Aylmer, 1800-14 | Aylmer, Richard John | Article in Journal | | 1997 |
| The inhabitants of the British Isles on the first crusade : medieval perceptions and the invention of a Pan-Angevin crusading heritage | Parsons, Simon Thomas | Article in Journal | | 2019 |
| The invention of memory : an Irish family scrapbook, 1560-1934 | Loftus, Simon | Monograph or Collective Volume | Daunt Books | 2014 |
| The IRA and its rivals : political competition and the turn to violence in the early troubles | Prince, SimonWarner, Geoffrey | Article in Journal | | 2013 |
| The Irish absentee tax controversy of 1773 : a study in Anglo-Irish politics on the eve of the American revolution | Moriarty, T. F. | Article in Journal | | 1974 |
| The Irish Association of Suicidology: A History | Fitzsimons, Paul & Friel, Breda | Monograph or Collective Volume | MD Publishing Services | 2020 |
| The Irish films in the Mitchell and Kenyon Collection | Monks, Robert | Article in Book | | 2004 |
| The Irish Franciscan mission ot the Highlands and Islands | Harris, Jason | Article in Book | | 2016 |
| The Irish in the 1921 census of England and Wales | Fitzsimons, Fiona | Article in Journal | | 2022 |
| The Irish Independent and empire, 1891-1919 | Maume, Patrick | Article in Book | | 2004 |
| The Irish National Aid and Volunteer Dependants' Fund | Fitzsimons, Fiona | Article in Journal | | 2016 |
| The Irish revival reappraised | | Monograph or Collective Volume | Four Courts | 2004 |
| The Irish theatre | FitzSimon, Christopher | Monograph or Collective Volume | [s.n.] | 1983 |
| The Irish theatre | Fitz-Simon, Christopher | Monograph or Collective Volume | Thames & Hudson | 1983 |
| The Irish-American press and the South African war | Ní Bhroiméil, Úna | Article in Book | | 2004 |
| The island of the saints and the homeland of the martyrs : Monsignor O’Riordan, Father Hagan and the boundaries of the Irish Nation (1906-1916). | Cefaloni, Simon | Article in Journal | | 2019 |
| The justification and exposition of the divine sacrifice of the mass | Fitzsimon, Henry | Monograph or Collective Volume | | 1611 |
| The last letter of John Scott Vandeleur of Ralahine | Simons, Kennie | Article in Journal | | 1996 |
| The lordship of O'Conor Faly, 1520-1570 | Fitzsimons, Fiona | Article in Book | | 1998 |
| The Lough Patrick pilgrimage, County Tyrone | Barker, TedSimon, Ben | Article in Journal | | 2001 |
| The Loughnashade trumpet - curved trumpet or carnyx? | O'Dwyer, Simon | Article in Journal | | 1998 |
| The mathematical tradition in popular education, 1780-1870 | Fitzsimons, J. | Article in Journal | | 1943 |
| The merino factory at Ennisnag, Co. Kilkenny | Curran, Simon | Article in Journal | | 1985 |
| The mirror crack'd : refractions from criticism | O'Kelly, Emer | Article in Book | | 2004 |
| The music of the sentimental nationalist heart : Thomas Moore and Seamus Heaney | Kress, Simon B. | Article in Journal | | 2011 |
| The Mutiny or freedom fight : the 1857 Indian Insurrection and the Irish press | Bender, Jill C. | Article in Book | | 2004 |
| The official Presbyterian Irish language policy in the 18th and 19th centuries | Fitzsimons, J. | Article in Journal | | 1949 |
| The official Presbyterian Irish language policy in the eighteenth and nineteenth centuries | Fitzsimons, J. | Article in Journal | | 1989 |
| The Ogham Inscriptions of Scotland and Brittonic Pictish | Rodway, Simon | Article in Journal | | 2020 |
| The Origin and Elaboration of the Catalogus Praecipuorum Sanctorum Hiberniae Attributed to Fr. Henry Fitzsimon, S.J. | Sharpe, Richard | Article in Journal | | 1989 |
| The other close at hand : Gerald of Wales and the "Marvels of the West" | Mittman, Asa Simon, 1976- | Article in Book | | 2003 |
| The parish of Kilbeg | Fitzsimons, J. | Monograph or Collective Volume | Leinster Leader | 1974 |
| The plains of royal Meath, including townlands, baronies, parishes, and electoral divisions, national monuments | Fitzsimons, J. | Monograph or Collective Volume | Kells Arts Studios | 1979 |
| The pleasures and penalties of networking : John Frederick Lampe in the summer of 1750 | Johnston, Roy | Article in Book | | 2004 |
| The point of departure : diaries from the front bench | Cook, Robert Finlayson, 1946-2005 | Monograph or Collective Volume | Pocket Books | 2004 |
| The political development of Ulster and the Lordship of the Isles 1394-1499 | Kingston, Simon | Thesis | | |
| The problem of false positives in automated census linking : nineteenth-century New York’s Irish immigrants as a case study | Ó Gráda, Cormac ; Anbinder, Tyler ; Connor, Dylan ; Wegge, Simone A. | Article in Journal | | 2023 |
| The propaganda war "down under" : Northern Ireland, Gerry Adams and the Australian print media | Adams, Simon, 1968- | Article in Journal | | 2001 |
| The Resurgence of Gaelic Power in Ireland and Scotland and its wider impact, c.1350-1513 | Egan, Simon P. | Thesis | | 2016 |
| The return of the native | Fitzsimons, Fiona | Article in Journal | | 2022 |
| The Rev. Gibson McMullan of Westport and some Australian connections | Simons, P. Frazier | Article in Journal | | 2001 |
| The revival at local level : Katherine Frances Purdon's portrayal of rural Ireland | Griffin, Brian | Article in Book | | 2004 |
| The Rifles Battalion in Bolivar's army, 1818-30 | Rodriguez, Moises Enrique | Article in Journal | | 2009 |
| The rise and fall of the Clann Éinrí Aimhréidh Uí Néill : dynastic feuding and geopolitics in the late medieval Irish Sea world | Egan, Simon | Article in Journal | | 2024 |
| The Rock of the Irishmen : an early place-name tale from Fife and Kinross | Taylor, Simon, 1950- | Article in Book | | 2007 |
| The sacking of Rathlin, 1557 : English sovereignty in Ireland, the Meic Domhnaill and the Anglo-Scottish wars | Edwards, David, 1963- | Article in Book | | 2025 |
| The Scots in early Stuart Ireland : Union and separation in two kingdoms | | Monograph or Collective Volume | Manchester UP | 2016 |
| The Scots of Ireland and the English Republic, 1649-60 | Duignan, Aoife | Article in Book | | 2016 |
| The Scottish response to the 1641 rebellionin Connacht : the case of Sir Frederick Hamilton | Duignan, Aoife | Article in Book | | 2016 |
| The Shelleys in Ireland | Fitzsimons, Eleanor | Article in Journal | | 2014 |
| The South African war, empire and the 'Irish World' 1899-1902 | Ní Bhroiméil, Úna | Article in Book | | 2004 |
| The speculative building activities of Simon Vierpyl | Byrne, Helen | Article in Journal | | 1995 |
| The struggle for European opinion in the Napoleonic Wars : British francophone propaganda, 1803-1814 | Burrows, Simon, 1966- | Article in Journal | | 1997 |
| The technology of late bronze age sword production in Ireland | Northover, J. P.Ó Faoláin, Simon | Article in Journal | | 1998 |
| The thriving of Dalriada | Sharpe, Richard | Article in Book | | 2000 |
| The toponymic landscape of the Gaelic notes in the Book of Deer | Taylor, Simon | Article in Book | | 2008 |
| The Tralee election of 1832 | Fitzsimons, Bob | Article in Journal | | 2003 |
| The Ulster Unionist Party, 1882-1973 : its development and organisation | Harbinson, John Fitzsimons | Monograph or Collective Volume | Blackstaff Press | 1973 |
| The visual record: a further look at the work of Simon Coleman, RHA, for the Irish Folklore Commission in County Galway in 1959 | Lysaght, Patricia | Article in Book | | 2012 |
| The Welsh Life of Saint David | | Monograph or Collective Volume | Gwasg Prifysgol Cymru/University of Wales Press | 2016 |
| Theatre beyond the Black Pig's Dyke : Ulster drama | Henderson, Lynda | Article in Book | | 2004 |
| There are compensations in the congested districts for their poverty : AE and the idealized peasant of the agricultural co-operative | Lane, Leeann | Article in Book | | 2004 |
| Thomas Fitz Simons patriot, soldier, statesman | Phelan, Thomas P. | Article in Journal | | 1922 |
| Thomas Fitzsimons (1614-80) | MacKiernan, Francis J. | Article in Journal | | 2001 |
| Thomas Fitzsimons : framer of the American constitution | Purcell, Richard J. | Article in Journal | | 1938 |
| Thomas William Rolleston : the forgotten man | O'Brien, Maria | Article in Book | | 2004 |
| Tithe applotment books | Fitzsimons, Fiona | Article in Journal | | 2019 |
| Tracing Black, Asian, Minority-Ethnic (BAME) and mixed-race people in Ireland, c.1700-1922, part 1 | Fitzsimons, Fiona | Article in Journal | | 2020 |
| Tracing first world war ancestors | Fitzsimons, Fiona | Article in Journal | | 2014 |
| Tracing Irish ancestors | Fowler, Simon | Monograph or Collective Volume | Public Record Office | 2001 |
| Tracing people on the land in the Tudor and Jacobean Plantations | Fitzsimons, Fiona | Article in Journal | | 2024 |
| Tracing the Irish in the American Civil War | Fitzsimons, Fiona | Article in Journal | | 2014 |
| Transmission and circulation of French texts in medieval Ireland: the other Simon de Montfort | Picard, Jean-Michel | Article in Book | | 2017 |
| Transportation records | Fitzsimons, Fiona | Article in Journal | | 2017 |
| Travel permits 1940-1952 | Fitzsimons, Fiona | Article in Journal | | 2021 |
| Travellers and family history | Fitzsimons, Fiona | Article in Journal | | 2018 |
| Trial for treason | Keeton, G. W. | Monograph or Collective Volume | | 1959 |
| Tudor fiants | Fityzsimons, Fiona | Article in Journal | | 2015 |
| Two Ballyshannon philanthropists and their legacy | Begley, Anthony | Article in Journal | | 2020 |
| Two early seventeenth-century county Donegal rent rolls | Elliott, Simon | Article in Journal | | 2002 |
| Ulster and the Isles in the fifteenth century : the lordship of the Clann Domhnaill of Antrim | Kingston, Simon | Monograph or Collective Volume | Four Courts | 2004 |
| Ulster emigration to colonial America, 1718-1730: the formative years | Warnock, Seán Simon | Thesis | | 1997 |
| Un Irlandés con Bolívar : recuerdos de la independencia de América del Sur en Venezuela, Colombia, Bolivia, Perú y la Argentina, por un jefe de la legión Británica de Bolívar | O'Connor, Francisco Burdett | Monograph or Collective Volume | El Cid Editor | 1977 |
| United in Crime | Hyde, Harford Montgomery | Monograph or Collective Volume | William Heinemann | 1955 |
| Up and over the wall : Ernie Andrews' stories | Andrews, Ernie | Article in Book | | 2005 |
| Varieties of Enlightenment : the Enlightenment and Irish political culture in the age of revolutions | Gillen, Ultán | Article in Book | | 2008 |
| Views from the Island: The West Kerry Gaeltacht and International Modernism are linked in the art of Maria Simonds-Gooding | Marshall, Catherine | Article in Book | | 2014 |
| Was there an Irish Enlightenment? The case of the Anglicans | Brown, Michael | Article in Book | | 2008 |
| What language did St Patrick swear in | Rodway, Simon | Article in Journal | | 2009 |
| What the dean left out : Scottish poems which have not been included in the Book of the Dean of Lismore | Simms, Katharine | Article in Book | | 2025 |
| Where are they now? : plays of significance in the 1940s and 1950s | Murray, Christopher | Article in Book | | 2004 |
| Whoops from the peat-bog? : Joseph Campbell and the London avant-garde | Davis, Alex | Article in Book | | 2004 |
| William Patrick Partridge (1874-1917) | Fitzsimons, Ann | Thesis | | 1997 |
| WO 35: army in Ireland, administrative and Easter Rising | Fitzsimons, Fiona | Article in Journal | | 2016 |
| Women and the colonial experience in Ireland, c. 1550-1650 | O'Dowd, Mary | Article in Book | | 1999 |
| Words of comfort to Persecuted Catholics. Written in exile, anno 1607. Letters from a cell in Dublin Castle and diary of the Bohemian war of 1620. Edited by Edmund Hogan | Fitzsimon, Henry | Monograph or Collective Volume | NA | 1881 |
| World War I chalice returns home | Canning, B. J. (Bernard J.) | Article in Journal | | 2013 |
| Writing home. Letters from Benjamin Foster Elliott from the United States to his family in County Monaghan written between 1849 and 1864 | Elliott, Benjamin Foster | Article in Journal | | 2012 |
| Writing the sixties into Northern Ireland and Northern Ireland into the sixties | Bosi, Lorenzo ; Prince, Simon | Article in Journal | | 2009 |
| ‘Five pounds for a swadler’s head’ : the Cork anti-Methodist riots of 1749–50 | Lewis, Simon | Article in Journal | | 2020 |
| ‘For saké? Irish whiskey’ : Andrew Fitzsimons and his representation of Japan | De Angelis, Irene | Article in Journal | | 2007 |