| " ... and organs and singing" : the organ and music of St Patrick's cathedral | Grindle, W. H. | Monograph or Collective Volume | St Patrick's Cathedral | 1991 |
| " A vestigial population"? Perspectives on Southern Irish Protestants in the twentieth century | d'Alton, Ian | Article in Journal | | 2009 |
| "A Community of Communities" - Catholic Communitarianism and Societal Crises in Ireland, 1890s-1950s | L'Estrange, Seán | Article in Journal | | 2007 |
| "A day of joy and pride" : a history of the Church of Our Lady of Lourdes | Durnin, Peter | Article in Journal | | 2000 |
| "A light to the blind" the voice of the dispossessed elite in the generation after the defeat at Limerick | Kelly, P. | Article in Journal | | 1985 |
| "A melancholy record" : the story of the nineteenth-century Irish Party Processions Acts | Maddox, Neil P. | Article in Journal | | 2004 |
| "A nation of beggars?" : priests, people and politics in famine Ireland, 1846-1852 | Kerr, Donal A. | Monograph or Collective Volume | Oxford University Press | 1994 |
| "A stable unseen power" : Dr William Drennan and the origins of the United Irishmen | Stewart, Anthony Terence Quincey, 1929-2010 | Article in Book | Blackstaff Press | 1976 |
| "A weapon of war yet untried" : Irish Catholics and the armed forces of the Crown, 1760-1830 | Bartlett, Thomas | Article in Book | Lilliput Press | 1993 |
| "A zealous Catholic and notorious trouble-maker" The Gormanston papers in the National Library of Ireland | Scally, Barbara
| Article in Journal | | 2009 |
| "Aliens and outlaws rather than subjects and citizens"? (The image and identity of) Catholics in eighteenth-century Scotland | Prunier, Clotilde | Article in Journal | | 2000 |
| "An argument against abolishing Christianity" as an argument against abolishing the Test Act | Ellis, Frank Hale | Article in Book | Fink Verlag | 1993 |
| "And if you know your history." An examination of the formation of football clubs in Scotland and their role in the construction of social identity | Burdsey, D.Chappell, R. | Article in Journal | | 2001 |
| "Bithiúnaigh iad uilig" : sagairt agus easpaig i 1798 | Keogh, Dáire | Article in Book | NA | 1998 |
| "Burke's political testament" : Thomas Hussey and the Irish Directory | Keogh, Dáire | Article in Book | Poolbeg | 1998 |
| "By the help of many lies" or how penal were the penal laws? | MacCarthy Mór | Article in Journal | | 1990 |
| "Clerical dictation" : reflections on the Catholic Church and the Parnell split | Callanan, Frank | Article in Journal | | 1990 |
| "De Bello Clerico" : Fr Batt O'Connor's attack on the evangelical missionaries | O'Reilly, Hugh | Article in Journal | | 2013 |
| "Different feelings" : Corktown and the Catholic Irish in early Hamilton, 1832-1847 | Holman, Andrew C. | Article in Journal | | 1997 |
| "Directions in historiography". History and Irish nationalism | English, Richard, 1963- | Article in Journal | | 2011 |
| "Disturbing the Complacency of Religion"? The Evangelical Crusades of Dr Billy Graham and Father Patrick Peyton in Britain, 1951-54 | Harris, AlanaSpence, Martin | Article in Journal | | 2007 |
| "Doesn't Mary have a lovely bottom?": Gender, sexuality and Catholic ideology in 'Father Ted' | McGonigle, Lisa | Article in Journal | | 2012 |
| "Dove of the church" : Saint Columba from seventh - and sixteenth - century perspectives | Thurlkill, Mary F. | Article in Journal | | 1993 |
| "Enter revenge" : Henry Burkhead and Cola's Furie | Coughlan, Patricia | Article in Journal | | 1990 |
| "Everything depends on the first year" : archbishop John Hughes and his fundraising plan for St. Patrick's Cathedral | Feighery, Kate | Article in Journal | | 2015 |
| "Exploited with fury on a thousand platforms" : Women, Unionism and the Ne Temere Decree in Ireland, 1908–1913 | MacPherson, D. A. J. | Article in Book | Cambridge Scholars | 2009 |
| "Facts newly 'stated' ": John Curry, the 1641 Rebellion and Catholic revisionism in eighteenth-century Ireland | Gibney, John | Article in Journal | | 2009 |
| "Father Raleigh went rapidly and amply to ruin" : Irish missionary clergy in nineteenth-century western Victoria | Blee, Jill | Article in Journal | | 2002 |
| "For a splendid cause" : Irish missionary nuns at home and on the mission field, 1921-1962 | Lynch, Kate, 1986- | Thesis | | |
| "Freedom and friendship to Ireland" : Ribbonism in early nineteenth-century Liverpool | Belchem, John | Article in Journal | | 1994 |
| "Giolla gan Eagla": Fr William Ferris (1881-1971), a 'turbulent priest' in Sliabh Luachra | McCarthy, Brendan | Article in Journal | | 2023 |
| "Go Forth as a Missionary to Fight It" : Catholic antisocialism and Irish American nationalism in post-World War I Boston | Murray, Damien | Article in Journal | | 2009 |
| "God's unfortunate people" : historiography of Irish Catholics in nineteenth-century Canada | Baker, William M. | Article in Book | Celtic Arts of Canada | 1988 |
| "Good behaviour" : Irish catholics and the Jacobite rising of 1745 | McLynn, Frank J. | Article in Journal | | 1981 |
| "Heretical plants of irish growth": Catholic critics of Mathewite temperance | Townend, Paul | Article in Journal | | 2005 |
| "Hibernians on the march" : Irish America and ethnic patriotism in the mid-twentieth century | O'Brien, Matthew J., 1968- | Article in Journal | | 2005 |
| "How the Irish Paid their Debt" : Irish Catholics in Scotland and Voluntary Enlistment, August 1914-July 1915 | McFarland, Elaine W. | Article in Journal | | 2003 |
| "I have been trying very hard to be powerful 'nice'..." : the correspondence of Sister M. de Sales (Brennan) during the American Civil War | Quinn, E. Moore | Article in Journal | | 2010 |
| "If one is lonely one prefers discomfort". The lives of John Broderick | Guy, Peter D. | Article in Journal | | 2008 |
| "Imperium in Imperio" : Irish Episcopal Imperialism in the Nineteenth Century | Barr, Colin | Article in Journal | | 2008 |
| "It is for a nation of martyrs to cultivate constant self-restraint." The Irish Catholic bishops' attitude to the IRA campaign, 1919-21 | Heffernan, Brian | Article in Journal | | 2008 |
| "JKL" : James Doyle bishop of Kildare and Leighlin (1786-1834) | Evans, Mairead | Article in Journal | | 2003 |
| "Late vocation" | Cavanagh, Frank | Article in Journal | | 1996 |
| "Mickeys and demons" vc 'bigots and boobies' : the Woodstock riot of 1847 | See, S. W. | Article in Journal | | 1991 |
| "More Irish than the Irish themselves"? The "Anglo-Irish" in Tudor Ireland | Ellis, Steven G., 1950- | Article in Journal | | 1999 |
| "No remedy more proper" : Anglo-Irish unionism before 1707 | Smyth, Jim | Article in Book | Cambridge University Press | 1998 |
| "Nothing is so bad for the Irish as Ireland alone": William Keogh and Catholic loyalty | Keogh, Richard A. | Article in Journal | | 2012 |
| "Old St Peter's" Athlone 1795-1937 | Canavan, Kitty | Article in Journal | | 1992 |
| "Only one class of people to draw upon for support" : Irish-Americans and the Archdiocese of New York | Shelley, Thomas | Article in Journal | | 2001 |
| "Our Country's Heroes" : Irish Catholics in Scotland and the Great War | McFarland, Elaine W. | Article in Book | John Donald | 2008 |
| "Our nuns are not a nation" : politicizing the convent in Irish literature and film | Cullingford, Elizabeth Butler | Article in Journal | | 2006 |
| "Patriots, Protestants and Papists" : religion and the ascendancy 1714-1760 | McCoy, Gerard | Article in Journal | | 1994 |
| "People v. Philips" in light of contemporary developments in Ireland and the U. S. | McMahon, Bryan | Article in Journal | | 2014 |
| "People v. Philips" in light of contemporary developments in Ireland and the U.S. | McMahon, Bryan | Article in Journal | | 2014 |
| "Perfidious machiavellian friar" : Florence Conry's campaign for a Catholic restoration in Ireland, 1592-1616 | O'Connor, Thomas | Article in Journal | | 2002 |
| "Should I take myself and family to another religion [?]" : Irish Catholic women, protest and conformity, 1920-1940 | Earner-Byrne, Lindsey | Article in Book | Palgrave Macmillan | 2015 |
| "So manie in the verie prime and spring of their youth, manie of them heirs of lande" : the friars of the Irish Capuchin mission in northern France and the Low Countries | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | Colin Smythe | 1991 |
| "Soli deo gloria": Catholic church music in Limerick c.1860-c.1950 | Collins, Paul | Article in Journal | | 2010 |
| "Staging a lie" : Boston Catholics and the new Irish drama | Kane, Paula M. | Article in Book | Leicester University Press | 1996 |
| "Still potentially dangerous in some quarters" : Sylvester Andriano, Catholic action, and un-American activities in California | Issel, William | Article in Journal | | 2006 |
| "Sturdy Catholic emigrants" : the Irish in early Victorian Birmingham | Chinn, Carl | Article in Book | Four Courts Press | 1999 |
| "The Abbey" : an appreciation of Loreto Abbey, Rathfarnham | Dempsey, Anne | Monograph or Collective Volume | The Community of Loreto Abbey | 1999 |
| "The beleaguered fortress", St Patrick's College, Thurles, 1837-1988 | O'Dwyer, Christopher | Article in Book | Geography Publications | 1989 |
| "The bunkum of Ulsteria" : the Orange marching tradition in late Victorian Cumbria | MacRaild, Donald M. | Article in Book | Palgrave Macmillan | 2000 |
| "The designs of providence" : race, religion and Irish insanity | Walsh, Oonagh | Article in Book | Routledge | 1999 |
| "The distinction is a fine but a real one". Sectarianism in county Clare during the War of Independence | Ó Ruairc, Pádraig Óg | Article in Journal | | 2010 |
| "The gates were shut" : Catholics, chapels, and power in late nineteenth-century Ireland | Delay, Cara | Article in Journal | | 2010 |
| "The Greatest Man in Wales" : James ap Gruffydd ap Hywel and the International Opposition to Henry VIII | Marshall, Peter, 1964- | Article in Journal | | 2008 |
| "The Ireland that I would have" : De Valera & the creation of an Irish national image | Dowling, Michele | Article in Journal | | 1997 |
| "The lost British lamb" : English Catholic exiles and the problem of Britain | Highley, Christopher | Article in Book | Cambridge University Press | 2002 |
| "The madness of party" : Sectarian homicide in Ireland, 1801-1850 | McMahon, Richard | Article in Journal | | 2007 |
| "The pattern of the flock" : John Thomas Troy, 1786-1823 | Keogh, Dáire | Article in Book | Four Courts Press | 2000 |
| "The perverted graduates of Oxford" : Priestcraft, "Political Popery" and the transnational anti-Catholicism of Sir James Emerson Tennent | Wright, Jonathan Jeffrey | Article in Book | Routledge | 2014 |
| "The right to labour, love and pray" : the creation of the ideal Christian woman in Ulster Roman Catholic and Protestant religious literature, 1850-1914 | Brozyna, Andrea Ebel | Article in Journal | | 1997 |
| "The ties that bind" : Irish Catholic testamentary evidence from Christchurch, 1876-1915 | Fraser, Lyndon | Article in Journal | | 1995 |
| "The village curate" : reflections and recollections | O'Reilly-Hyland, Kathleen | Monograph or Collective Volume | Kathleen O'Reilly-Hyland | 1994 |
| "Their colonial condition" : Connections between French-Canadians and Irish Catholics in the 'Nation' and the 'Dublin University Magazine' | King, Jason | Article in Journal | | 2007 |
| "These people never seem to lose their charm": Calum Iain Maclean in Clonmel | Wiseman, Andrew | Article in Journal | | 2012 |
| "They all seem to have inherited the horrible ugliness and sewer filth of sex": Catholic guilt in selected works by John McGahern (1934-2006) | Maher, Eamon | Article in Journal | | 2014 |
| "Though hereticks and politicians should misinterpret their good zeale" : political ideology and Catholicism in early modern Ireland | Ó hAnnracháin, Tadhg | Article in Book | Cambridge University Press in association with the Folger Institute, Washington, DC | 2000 |
| "Three cheers for the Union" : Catholic chaplains and Irish loyalty during the American Civil War | Endres, David J. | Article in Journal | | 2021 |
| "To do and to teach" : a history of the Christian Brothers in Tipperary town, 1868-1994 | Marnane, Denis G. | Monograph or Collective Volume | The Friends of the Christian Brothers | 1994 |
| "True men as we need then" : Catholicism and the Irish-American male | McDannell, Colleen | Article in Journal | | 1986 |
| "Un pueblo unido..." : the politics of Philip O'Sullivan Beare | Morgan, Hiram | Article in Book | Consejo Superior de Investigaciones Cientificas | 2002 |
| "Underhand Dealings with the Papal Authorities" : Disraeli and the Liberal Conspiracy to Disestablish the Irish Church | Kennedy, Padraic C. | Article in Journal | | 2008 |
| "Unwearied investigations and interminable correspondence" : the churches and clerical work in improving housing conditions for Irish migratory potato workers in Scotland | Holmes, Heather | Article in Journal | | 2000 |
| "We Are Alienating the Splendid Irish Race" : British Catholic Response to the Irish Conscription Controversy of 1918 | Taouk, Youssef | Article in Journal | | 2006 |
| "We have a strong city" : politicised Protestantism, evangelicalism and the siege myth in early nineteenth-century Derry | McGovern, Mark | Article in Book | Four Courts Press | 2001 |
| "We here in Ireland are not outside this struggle": the Irish Catholic Church, anti-communism and the Cold War, 1945-1965 | Madden, Gerard | Thesis | | 2018 |
| "Were you at the rock?" the history of mass rocks in Ireland | Nugent, Anthony | Monograph or Collective Volume | Liffey Press | 2013 |
| "What a fool I have been" : Fr. Robert O'Keeffe, parish priest and the Callan controversy 1869-1881 | Hogan, Patrick | Article in Book | Philip P. Lynch in co-operation with Callan Heritage Society | 2010 |
| "When they persecute you in one state, flee ye to another" : petition to Pope Pius the Ninth by potential Irish emigrants to Brazil | | Article in Journal | | 2006 |
| "When Ulster joined Ireland" : anti-popery, presbyterian radicalism and Irish republicanism in the 1790s | McBride, Ian | Article in Journal | | 1997 |
| ' Backsliders from the Protestant religion': Apostasy in the 1641 Depositions [with index] | | Article in Journal | | 2012 |
| '...it would be preposterous to bring a Protestant here' : religion, provincial politics and district nurses in Ireland, 1890-1904 | Breathnach, Ciara | Article in Book | Institute of Historical Research | 2015 |
| '98 in Carlow | Mac Suibhne, Peadar | Monograph or Collective Volume | The Nationalist | 1974 |
| 'A Beacon in the Twilight': Matthew Russell, S.J. and the 'Irish Monthly' | O'Keefe, Declan | Article in Journal | | 2010 |
| 'A blessed and ever-enduring fellowship' : the development of John Henry Newman's thought on death and the life beyond | Tolhurst, James | Article in Journal | | 1995 |
| 'A case of great peculiarity and novelty': the Blackrockm Convent, Cork versus the McCarthy family in the House of Lords, 1848 | Morrogh, Michael McCarthy | Article in Journal | | 2017 |
| 'A cold house for Catholics'? The consolidation of the Northern Ireland state in the 1920s | Campbell, Sarah | Article in Book | Irish Academic Press | 2015 |
| 'A deed agreeable to God': Andrija Artukovic and Croat Ustaše connections with Ireland | Kennedy, Michael (Michael J.) | Article in Journal | | 2014 |
| 'A few good canons?' : Canon Ulick Bourke and clerical reaction to the outbreak of the Land War | Faherty, Shane | Article in Book | History Press | 2013 |
| 'A most unenviable reputation' : the Christian Brothers and school discipline over two centuries | Coldrey, Barry | Article in Book | Crossing Press | 1995 |
| 'A noble church in the most Catholic quarter of a bitterly Protestant and Presbyterian city': the Church of the Most Holy Redeemer, Clonard, West Belfast | McGee, Caroline M. | Article in Book | Irish Academic Press | 2013 |
| 'A peculiar people in their own land': Catholic social theory and the plight of rural Ireland | Ferriter, Diarmaid | Thesis | | 1996 |
| 'A Presentment of Recusants, East Galway, 1632' | Smyth, Michael | Article in Journal | | 2009 |
| 'A very brisk month of canvassing and caucusing.' Episcopal appointments in the diocese of Limerick 1825-1917 | Tobin, Matthew | Article in Journal | | 2004 |
| 'A weighty, serious business' : the conversion of Catholic clergy to Anglicanism | Power, Thomas P. | Article in Book | Four Courts Press | 2005 |
| 'Abandon Hibernicisation' : priests, Ribbonmen and an Irish street fight in the north-east of England in 1858 | MacRaild, Donald M. | Article in Journal | | 2003 |
| 'Among school children' : the churches, politics and Irish schooling, 1830-1930 | Raftery, Deirdre | Article in Journal | | 2011 |
| 'An ambiguous awe' : Paul Cullen and the historians | Barr, Colin | Article in Book | Four Courts Press | 2011 |
| 'An Ark in the Deluge' : Multyfarnham Abbey and the Nugents of Delvin, 1607-41 | Hazard, Benjamin | Article in Journal | | 2011 |
| 'An creideamh agus Ghaeilge fite fuaite ina chéile' | Ua Cnáimhsí, Pádraig | Article in Book | Coiscéim | 1996 |
| 'An example of the rehabilitation of her sex' : contextualising the founding and early mission message of the Holy Rosary Sisters from Killeshandra, County Cavan, 1924-1949 | Finnegan, Michael | Article in Book | Geography Publications | 2014 |
| 'An ordinary commonplace outbreak of everyday dirty bigotry' : Walter Dwyer and the St. Patrick's Day procession in Perth, 1915 | Mortimer, Maureen | Article in Journal | | 2005 |
| 'And soe let us goe and spare not'. Thomas Wentworth's quest for uniformity and the implications for the Catholic and Protestant churches in Ireland, c.1621-1634 | Empey, Mark | Article in Journal | | 2005 |
| 'As Catholic as the pope' : James Connolly and the Roman Catholic church in Ireland | Newsinger, John | Article in Journal | | 1986 |
| 'As legacie upon my soule' : the wills of the Irish Catholic community, c.1550-c.1660 | Tait, Clodagh | Article in Book | Four Courts Press | 2006 |
| 'Attending to the wants of poverty' : Paul Cullen, the relief of poverty and the development of social welfare in Ireland | Crossman, Virginia | Article in Book | Four Courts Press | 2011 |
| 'Bethlehem' : the Dillons and the Poor Clare convent at Ballinacliffey, Co. Westmeath | Cunningham, Bernadette | Article in Journal | | 2013 |
| 'Between the army and the altar': the function of folk narrative and the image of Geoffrey Keating | Fitzgerald, Kelly | Article in Journal | | 2014 |
| 'Between the Devil and the Deep Blue Sea' : Irish Women, Catholicism and Colonialism | Rossiter, A. | Article in Book | | 1992 |
| 'Bishop in the dock' : the sedition trial of James Liston | Sweetman, Rory | Article in Book | Crossing Press | 1995 |
| 'Brunswick bloodhounds and itinerant demagogues' : the campaign for Catholic Emancipation in County Armagh, 1824-29 | MacAtasney, Gerard | Article in Journal | | 2008 |
| 'Bulwark of the nations': Paul Cullen, the Christian Brothers, and the evangelization of an Irish empire | Keogh, Dáire | Article in Book | Four Courts Press | 2012 |
| 'By reason of those troublesome times': The War of the Two Kings and Father Edward Ffrench | | Article in Journal | | 2011 |
| 'Croagh Patrick' the holy mountain of Ireland | Blackwell, Meike | Monograph or Collective Volume | The author | 1983 |
| 'Cumhaidh na cléire', a '98 poem from north Leitrim | Ó Mórdha, Séamus | Article in Journal | | 1958 |
| 'Darkness must be expell'd by letting in the light' : Bishop Francis Hutchinson and the conversion of Irish Catholics by means of the Irish language, c. 1720-4 | Sneddon, Andrew | Article in Journal | | 2004 |
| 'Disappointing the boundless ambition of France': Irish Protestants and the fear of invasion, 1661-1815 | Kelly, James, 1959- | Article in Journal | | 2011 |
| 'Dividing the bear's skin before she is taken' : Irish Catholics and land in the late Stuart monarchy, 1683-91 | Kinsella, Eoin | Article in Book | Ashgate | 2008 |
| 'Don John Conmee' and the Jesuit link between James Joyce and Australia | O'Sullivan, Richard | Article in Journal | | 2008 |
| 'Down with Dublin' - Frank Gibney and the role of Dublin in the vision of the nation | McCabe, Fergal | Article in Journal | | 2019 |
| 'Drowning the shamrock' : drink, teetotalism, and the Irish Catholics of Gilded-Age Pittsburgh | Walsh, Victor A. | Article in Journal | | 1990 |
| 'Eagla an Ghallsmacht': the religion and politics of Irish catholics,1620s-1670s | Kennedy, Mary Catherine | Thesis | | 1987 |
| 'Eternity is not long enough nor hell hot enough...' The Catholic Church and Fenianism | Rafferty, Oliver P. | Article in Journal | | 2008 |
| 'Exercising a close vigilance over their daughters': Cork women, American sailors, and Catholic vigilantes, 1917-18 | Borgonovo, John | Article in Journal | | 2012 |
| 'Faith & fatherland' in sixteenth-century Ireland | Morgan, Hiram | Article in Journal | | 1995 |
| 'Faithful Children of the Holy See': The Defence Forces Chaplaincy Service, 1945-59 | Hartigan, Maurice | Article in Journal | | 2023 |
| 'Farewell Spain': Kate O'Brien's elegy to war-torn Spain | Mittermaier, Ute Anna | Article in Journal | | 2013 |
| 'Filium Illegitium': Illegitimacy data for the Diocese of Waterford and Lismore | Purcall, Clíona | Article in Journal | | 2019 |
| 'from education, from duty, and from principle' : Irish Catholic loyalty in context, 1829-1874 | Keogh, Richard A. | Article in Journal | | 2017 |
| 'Giant and brutal islanders' : the Italian response to the Irish Papal Brigade | O'Connor, Anne | Article in Book | | 2014 |
| 'Good fences make good neighbours': fabricated crime and religious tension in pre-Famine King's County | Hartigan, Robert | Article in Journal | | 2015 |
| 'Grace and favour' : the Cabal ministry and Irish Catholic politics, 1667-73 | Creighton, Anne | Article in Book | | 2008 |
| 'Have your children got leave to speak?' the teacher training of New Zealand Dominican Sisters, 1871-1965 | Collins, Jenny | Article in Book | | 2016 |
| 'Honest Pat' - Patrick Crumley DL, MP | McRoe, Malachy | Article in Journal | | 2011 |
| 'Hurrah for old Ireland!' : Irish Catholicism at the Cape of Good Hope | Barr, Colin | Article in Book | | 2015 |
| 'I am building a house': Nano Nagle's Georgian convents | Castle, JessieO'Brien, Gillian | Article in Journal | | 2016 |
| 'I kept my design a profound secret': the nature and impact of the educational provisions of the Penal Laws | Kelly, James, 1959- | Article in Journal | | 2019 |
| 'Immensity confined' : Luke Waddinge, bishop of Ferns | Murphy, Celestine | Article in Journal | | 1988 |
| 'In what orbit we shall find ourselves, no one could predict': institutional reform, the university merger and ecclesiastical influence on Irish higher education in the 1960s | Nolan, AnnWalsh, John | Article in Journal | | 2017 |
| 'Inoperative but insulting' : residues of the penal laws, 1829-1920 | Costello, Kevin | Article in Book | | 2021 |
| 'Ireland's destiny is in the making' : the impact of the anniversary celebrations of 1929 and 1932 on the religious character of Ireland | Moffitt, Miriam | Article in Book | | 2015 |
| 'Irish Protestants feel this betrayal keenly' : Home rule, Rome rule and nonconformity | Megahey, Alan | Article in Book | | 2004 |
| 'It's not as simple as that' : the expression of the Catholic and Protestant boundary in Northern Irish rural communities | McFarlane, Graham | Article in Book | | 1986 |
| 'Learned, attached and reliable' : Luke Wadding, agent of the Spanish monarchy | Pérez Tostado, Igor | Article in Book | NA | 2020 |
| 'Let the Damn Protestants do the Enlisting': The T.C. Beirne libel case in Brisbane, 1916-17 | Sullivan, RobinSullivan, Rodney | Article in Journal | | 2018 |
| 'Merry in God' (Father William Doyle, S. J.) | Anonymous | Monograph or Collective Volume | Longmans | 1939 |
| 'Miraculous meddlers': the Catholic Action movement | Curtis, Maurice | Article in Journal | | 2010 |
| 'Most vicious and refractory girls' : the reformatories at Ballinasloe and Monaghan | Curtin, Geraldine | Article in Journal | | 2013 |
| 'My experiences in the 1916 Rising' by Father Columbus Murphy, O,F,S,C, 29 July 1916 | Murphy, Columbus, O.F.S.C. | Article in Journal | | 2016 |
| 'Neither an Papist nor a Piper': the Jacobite roots of the abhorrence of bagpipes at Bandon, | Donnelly, Sean | Article in Journal | | 2015 |
| 'New and elegant chapels, either built or in the act of building' : St John the Baptist, Cashel, and Catholic architecture in an era of relief and reform | NicGhabhann Coleman, Niamh | Article in Journal | | 2024 |
| 'New wine in old bottles' : implementing Trent in early modern Ireland | Ryan, Salvador | Article in Book | | 2007 |
| 'No good Catholic can be a true socialist' : the Labour party and the Catholic Church, 1922-52 | Ferriter, Diarmaid | Article in Book | | 2012 |
| 'Nolumus mutari' : time for change at King's Inns? | Kenny, Colum | Article in Journal | | 2005 |
| 'Not ... an equal, but ... one of his subjects' : John Henry Newman's perception of the archbishop of Dublin | Ker, Ian | Article in Book | | 2011 |
| 'Nothing could be more pernicious' : King James II and parliament at King's Inns, Dublin, 1689 | Kenny, Colum | Article in Journal | | 2017 |
| 'Objects of raging detestation': the Charter Schools | Kahn, Helena Kelleher | Article in Journal | | 2011 |
| 'Our sacred and civil obligations as Christians and as citizens': religion, charity and governance in early nineteenth-century Dublin and Edinburgh | Curran, Joe | Article in Journal | | 2023 |
| 'Papists' oder 'Roman Catholic citizens' zum toleranz und frühen Katholikenemanzipation auf der Britischen Inseln im 18 Jahrhundert | Hammermayer, Ludwig | Article in Book | | 1976 |
| 'Perge, signifer' - or, where did William Maginn stand? | Latané, David E. | Article in Book | | 2005 |
| 'Playing games with history' : Arthur Donnelly, first elected Catholic representative in Lurgan | Cook, David S. | Article in Journal | | 2013 |
| 'Pope's parish' : Liscannor/Moymore, Dioc. of Kilfenora, Co. Clare | Lee, Robert E., Rev. | Monograph or Collective Volume | NA | 2003 |
| 'Pro Fide et Patria', but for Europe: "Iris Hibernia" and a Swiss-led vision for European Ireland | White, Jerry | Article in Journal | | 2022 |
| 'Protestantism before Party!' : the Ulster Protestant League in the 1930s | Walker, Graham | Article in Journal | | 1985 |
| 'Quenching the Prairie Fire'. The collapse of the Gaelic Athletic Association in 1890s Ireland | McElligott, Richard | Article in Journal | | 2014 |
| 'Rebell privy counsellors' : the first Catholic confederate supreme council, July 1642 | McHugh, Jason | Article in Journal | | 2015 |
| 'Replant the uprooted trunk of the tree of faith' : the Society of Jesus and the continental colleges for religious exiles | McCoog, Thomas M. | Article in Book | | 2013 |
| 'Resigned to take the bill with its defects' : the Catholic Church and the third Home Rule bill | Ó Corráin, Daithí | Article in Book | | 2014 |
| 'Roma locuta, causa finita?' : the perception, interpretation and implementation of conciliar and post-conciliar directives regarding liturgical music in Ireland, 1962-92 | Phelan, Helen | Article in Book | | 1996 |
| 'Second spring' and 'precious prejudices' : Catholicism and anti-Catholicism in Hampshire in the era of emancipation | Matthews, Shirley | Article in Book | | 2005 |
| 'So grand on ....' | Kiely, Benedict | Article in Journal | | 1946 |
| 'So many wheels within wheels' : the 1793 Catholic Relief Act revisited | Bartlett, Thomas | Article in Book | | 2016 |
| 'Srong views ... in very strong forms' : Paul Cullen, archbishop of Armagh, 1849-52 | Macaulay, Ambrose | Article in Book | | 2011 |
| 'Statement issued by the Cardinal Primate and the archbishops and bishops of Ireland on the present condition of their country' (1920) | Waldron, Kieran
| Article in Journal | | 2021 |
| 'Studies' and the shadow of Modernism | Rafferty, Oliver P. | Article in Journal | | 2011 |
| 'Supernatural manifestations accompanied by cures' - the phenomenon of the Templemore miracles 1920 | Reynolds, John | Article in Journal | | 2012 |
| 'Supernatural manifestations accompanied by cures' -the phenomenon of the 'Templemore miracles', 1920 | Reynolds, John | Article in Journal | | 2009 |
| 'That noble struggle' : Irish Conservative attitudes towards the Risorgimento, c. 1848-70 | Shields, Andrew | Article in Book | | 2014 |
| 'That nost serious duty' : Catholic preaching in Ireland, 1760-1840 | Ryan, David Edward | Thesis | | 1998 |
| 'The abominable Cath. Quest.': Catholic Emancipation, 1820-30 | Bartlett, Thomas | Article in Book | Oxford University Press | 2023 |
| 'The angel of Andersonville' : Father Peter Whelan (1802-70) | Gleeson, David T. | Article in Book | | 2015 |
| 'The Bottom Dog and the Bishop's Crozier' : the Catholic hierarchy and the trade union movement in Limerick, 1916-22 | Haugh, Dominic | Article in Journal | | 2006 |
| 'The Cat's Paw': Helen Arthur, the act of resumption and 'The Popish pretenders to the forfeited estates in Ireland', 1700-03 | Nolan, Frances | Article in Journal | | 2018 |
| 'The lady ... God intends for my wife' : letter from M[ichael] Murphy [to Dr Edward Thomas O'Dwyer, bishop of Limerick (1886-1917) on 'mixed marriage' | Bracken, David | Article in Book | | 2019 |
| 'The Law of God': the Catholic Church and the Northern Ireland conflict, 1968-1977 | Andersen, Nina V. | Thesis | | 2016 |
| 'The leaven of your forepassed wicked lives purged' : excommunication and exile in part 1 of David Rothe's Analecta (1616) | Hand, Stephen | Article in Journal | | 2012 |
| 'The music of the 'Pass' | Halliday, Andrew | Article in Journal | | 1993 |
| 'The tree of liberty' : radicalism, Catholicism, and the construction of Irish identity 1760-1830 | Whelan, Kevin | Monograph or Collective Volume | Cork University Press | 1996 |
| 'The true father of confederation'? : Archbishop E. P. Roche, Term 17, and Newfoundland's confederation with Canada | Fitzgerald, John Edward | Article in Journal | | 1998 |
| 'The unpopular front': the Catholic renewal and Irish cultural identity, 1932-1948 | Riordan, Susannah | Thesis | | 1991 |
| 'The widow's mite': private relief during the Great Famine | Kinealy, Christine | Article in Journal | | 2008 |
| 'There are tears in their numbers' : famine relief for Ireland, 1847-84 | Neville, Grace | Article in Journal | | 2014 |
| 'There is an isle in the western ocean' : the Christian Brothers, Our Boys and catholic/nationalist ideology | Flanagan, Michael | Article in Book | | 2006 |
| 'Though I abominate your superstitions, I love your person': Parson Nathaniel Hooke, Father Ambrose Grymes and a sermon to mark James II's coronation preached in Brussels, 23 April 1685(OS) | Byrne, Thomas | Article in Journal | | 2017 |
| 'Time, energy and brass' : why 'Studies' did not fail | O'Keeffe, Declan | Article in Journal | | 2017 |
| 'True Brittons and real Irish' : Irish Catholics in the British Army during the Revolutionary and Napoleonic Wars | Kennedy, Catriona | Article in Book | | 2013 |
| 'Undiluted materialism and principles undermining all morality'. The lecturers, the Teachers' College and the Catholic Church | Hammer, Merril | Article in Journal | | 2004 |
| 'Unrelenting deference'? Official resistance to Catholic moral panic in the mid-twentieth century | Ferriter, Diarmaid | Article in Journal | | 2010 |
| 'We hope that the tempest is soon calmed' - early Irish Jesuits | Moynes, Vera | Article in Journal | | 2018 |
| 'We know neither Catholics nor Protestants nor free-thinkers here' : ethnicity, religion and the Chicago public schools, 1837-94 | Cowan, Mimi | Article in Book | | 2015 |
| 'Where war is within' : Hopkins, the English soldier-poet in Ireland | White, Norman | Article in Journal | | 1990 |
| 'Why have a Catholic hospital at all?' the Mater Infirmorum Hospital, Belfast, and the state, 1883-1972 | Martin, Peter | Article in Book | | 2015 |
| 'With much quiet fervour' : A brief history of Dunlavin Roman Catholic parish and St. Nicholas of Myra church | Lawlor, Chris | Monograph or Collective Volume | Chris Lawlor | 2018 |
| 'Zeal for God and for souls' : Counter-Reformation preaching in early seventeenth-century Ireland | Cunningham, Bernadette | Article in Book | Four Courts Press | 2001 |
| (Obituary) Fr. James Coombes | Ó Murchadha, Diarmuid | Article in Journal | | 2001 |
| + Kevin : a portrait of Archbishop Kevin McNamara | Power, Louis | Monograph or Collective Volume | Blackwater | 1993 |
| 10 October 1922: The Bishops Condemn the Republican Campaign : Weaponising The Sacraments: The Roman Catholic Church and Civil War | Ó Corráin, Daithí | Article in Book | | 2022 |
| 120 years of the Christian Brothers in Charleville, 1866-1986 | O'Riordan, Ted | Article in Journal | | 1987 |
| 1241-1991 : 750th anniversary of the founding of the Dominican priory of Saints Peter and Paul, Athenry | Rynne, Etienne | Monograph or Collective Volume | Athenry Historical Society | 1991 |
| 1641 and the quest for Catholic emancipation, 1691-1829 | Hill, Jacqueline R. | Article in Book | | 1993 |
| 1641 Depositions | | Website | Trinity College Dublin. Department of History. | 2009 |
| 1641 Depositions. Volume I: Armagh, TCD, MS 836; Louth, TCD, MS 834; Monaghan, TCD, MS 834 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions. Volume II : Cavan, TCD, MS 832 & MS 833; Fermanagh, TCD, MS 835 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions. Volume III : Antrim, TCD, MS 838; Derry, TCD, MS 839; Donegal, TCD, MS, 839; Down, TCD, MS 837; Tyrone, TCD, MS 839 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2014 |
| 1641 Depositions: Volume V - Kildare, TCD, MS 813; Meath, TCD, MS 816 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2019 |
| 1641 Depositions; volume IV; Dublin, TCD, MS 809 & TCD, MS 810, Miscellaneous associated papers, TCD, MS 840 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2017 |
| 1798 claimed for Catholics : Father Kavanagh, Fenians and the centenary celebrations | Kinsella, Anna | Article in Book | | 1996 |
| 17th century letters of a northern Dominican | Robb, C. J. | Article in Journal | | 1945 |
| 1916 - revolution and religion | Whyte, John | Article in Book | | 1967 |
| 1922 Executions recalled | Pigott, John | Article in Journal | | 1997 |
| 19th century images of Hartford's Irish-Catholic community (1827-1861) | Duffy, Joseph | Article in Journal | | 1986 |
| 3 days in September : when the pope came to Ireland | | Monograph or Collective Volume | Liberties Press | 2004 |
| 40th anniversary of the Church of St Laurence O'Toole | Sobolewski, Peter | Article in Journal | | 2009 |
| 5 October 1968 and the beginning of the troubles : flashpoints, riots and memory | Prince, Simon Peter | Article in Journal | | 2012 |
| 50 years a priest | Rogers, Pat | Article in Journal | | 2018 |
| 50 years of the Catholic Social Service Conference : a brief history | Purcell, Mary | Monograph or Collective Volume | Catholic Social Service Conference | 1991 |
| 6 February 1922: Pius XI Ascends to the Papacy
Religion, Graffiti and Political Imprisonment | McAtackney, Laura | Article in Book | | 2022 |
| 75 years of the Legion of Mary | Kennedy, Kieran A. | Article in Journal | | 1997 |
| A 'beleaguered Protestant'? Walter Harris and the writing of Fiction Unmasked in mid-eighteenth-century Ireland | Magennis, Eoin Francis | Article in Journal | | 1998 |
| A 'Catholic Wind' on Bantry Bay? | Kennedy, Gordon | Article in Journal | | 2017 |
| A 'Fair chance'? The Catholic Irish Brigade in the British Service, 1793-1798 | McDonnell, Ciarán | Article in Journal | | 2016 |
| A 'most vainglorious man' : the writings of Antonius Bruodin | McInerney, Luke | Article in Journal | | 2017 |
| A 'penal' crucifix from 1721 | Ó Fearghail, Feargus ; Walsh, Jim | Article in Book | Slieverue Parish Pastoral Council | 2001 |
| A 'Protestant folk'? Addressing a historical imbalance in Irish folklore-collecting | Nuttall, Deirdre ; MacCarthaigh, Críostóir | Article in Journal | | 2017 |
| A 17th century mass book | Cloney, Sean | Article in Journal | | 1995 |
| A bedside book of Irish saints | Roche, Aloysius | Monograph or Collective Volume | Browne and Nolan | 1941 |
| A bid for rural ascendancy : the upper Canadian Orangemen, 1836-1840 | Senior, Hereward | Article in Journal | | 1986 |
| A biographical directory of 19th century Catholic clergy from the parish of Lower Creggan, County Armagh | McConville, Kieran | Article in Journal | | 2011 |
| A biographical directory of 19th century Catholic clergy from the Parish of Upper Creggan, Archdiocese of Armagh | McConville, Kieran | Article in Journal | | 2013 |
| A bishop for the shortest time: Bernard Finegan (1837-1887) | Kelly, Liam | Article in Journal | | 2021 |
| A Bishop of penal times: the life and times of John O'Brien, Bishop of Cloyne and Ross, 1701-1769 | Coombes, James | Monograph or Collective Volume | Tower Books | 1981 |
| A bishop of the MacCarthy's : Dr Florence MacCarthy (1761-1810) | Walsh, T. J. | Article in Journal | | 1951 |
| A bishop of the penal times : being letters and reports of John Brenan, bishop of Waterford (1671-93) and archbishop of Cashel (1677-93) | | Monograph or Collective Volume | Cork UP | 1932 |
| A brave new world : the Irish agrarian colony of Benedicta, Maine in the 1830's and 1840's | McCarron, Edward T. | Article in Journal | | 1994 |
| A Bride in Tallow, 1941-1942 | McIntyre, Brigid | Article in Journal | | 2018 |
| A brief account ... of the causes ... of the Irish rebellion ... 1641 | [Curry, John] | Monograph or Collective Volume | | 1747 |
| A brief sketch of the early history of the Catholic Church on the island of New York | Bayley, James R. | Monograph or Collective Volume | United States Catholic Historical Society | 1973 |
| A broken hallelujah : the making of a Christian Brother | Leavy, Lorcan | Monograph or Collective Volume | History Press | 2011 |
| A Butler endowment at Paris university | Butler, Theobald Blake | Article in Journal | | 1980 |
| A calendar of the letters of Thomas Bray, Archbishop of Cashel, 1792-1820 | Meagher, Mary T. | Thesis | | 1966 |
| A calendar of the missionary correspondence of All Hallows, Dublin, 1842-77 | Murray, Patrick, Rev. | Thesis | | 1956 |
| A calendar of the papers of Michael Slattery, archbishop of Cashel, 1834-57 | Tierney, Mark | Thesis | | 1965 |
| A candle was lit : life of Mother Mary Aikenhead | Butler, Margery Bayley | Monograph or Collective Volume | Clonmore & Reynolds | 1953 |
| A Capuchin poet of the Jacobite wars | Walsh, T. J. | Article in Journal | | 1953 |
| A Carlow M. P., Sir John Acton | Brophy, P. J. | Article in Journal | | 1951 |
| A case of undercutting wages? : Sectarian tension and the Barrow anti-Irish riot of 1864 | MacRaild, Donald M. | Article in Journal | | 1996 |
| A Castilian-Regalist cradling : Spanish-Habsburg formation of the early Irish Counter Reformation | Downey, Declan M. | Article in Book | | 2006 |
| A Catholic burial in Tynan parish in June 1829, following Emancipation | Gilmore, Brian | Article in Journal | | 2015 |
| A Catholic centenary | K., B. | Article in Journal | | 1946 |
| A Catholic college : U.C.C. in the 1940s and 1950s | Murphy, John A. | Article in Journal | | 1988 |
| A Catholic funeral in County Down, 1617 | Mac Cuarta, Brian | Article in Journal | | 2006 |
| A Catholic in a puritan society | Lapomarda, Vincent A. | Article in Journal | | 1990 |
| A Catholic Unionist : the life and times of William Monsell, first Baron Emly of Tervoe (1812-1894) | Potter, Matthew | Monograph or Collective Volume | M. Potter | 1994 |
| A Catholic unionist: the life and times of William Monsell, first Baron Emly of Tervoe, 1812-1894 | Potter, Matthew | Thesis | | 2001 |
| A Catholic's secret counsel to the British government on his Irish church | Hachey, Thomas E. | Article in Journal | | 1973 |
| A celebrated eighteenth-century preacher in Dublin | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| A Census from the Catholic Parish of Paulstown-Goresbridge, Co. Kilkenny c.1872-1873 | Flood, Mary | Article in Journal | | 2022 |
| A century and more of reaching out : an historical sketch of the Parish of St. Paul the Apostle | Scott, Joseph | Monograph or Collective Volume | The Missionary Society of St. Paul the Apostle in the State of New York | 1983 |
| A century of prayer 1893-1993 : Poor Clare Monastery, Perpetual Adoration, Graiguecullen, Carlow | Poor Clare Monastery, Graiguecullen, Carlow | Monograph or Collective Volume | Poor Clares | 1993 |
| A challenge to democracy : militant Catholicism in modern Ireland | Curtis, Maurice | Monograph or Collective Volume | History Press | 2010 |
| A channel of peace : the story of the Corrymeela Community | Davey, Ray | Monograph or Collective Volume | Marshall Pickering|Zondervan | 1993 |
| A Church destroyed, the Church restored: France's Irish Catholicism | Deane, Seamus | Article in Journal | | 2011 |
| A clerical dogfight, 1767-1772 : the appointment of Archbishop James Butler II of Cashel | Moloney, John | Article in Journal | | 1983 |
| A comparative study of the lives of Church of Ireland and Roman Catholic clergy in the south-eastern dioceses of Ireland from 1550 to 1650 | Hensey, Áine | Thesis | | 2012 |
| A complete Catholic directory, almanack, and registry | [Battersby, W. J.] | Monograph or Collective Volume | | 1836 |
| A conduit to baleful modernity? Church responses to youth culture 1956-1973 | Holohan, Carole | Article in Journal | | 2005 |
| A Corkman and a controversial bible : McNamara and the Rhemish notes | Bateman, Dilys | Article in Journal | | 1994 |
| A criminal profile of the Liverpool Irish | Neal, Frank | Article in Journal | | 1991 |
| A curious middle place : the Irish in Britain, 1871-1921 | Fitzpatrick, David | Article in Book | | 1989 |
| A database of Catholic priests reported to be in south-eastern Ireland, 1557-1650 [with index] | Hensey, Áine | Article in Journal | | 2015 |
| A day in the life of Father Luke Wadding | Mooney, Canice | Article in Journal | | 1957 |
| A demographic and social profile of Quebec city's Irish populations, 1842-1861 | Grace, Robert J. | Article in Journal | | 2003 |
| A description of the Marward stone at Skyrne and a description of John Cusack who sculptured it | Hickey, Elizabeth | Article in Journal | | 1973 |
| A dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1968 |
| A discreet benevolence : female philanthropy and the Catholic resurgence in eighteenth-century Ireland | Raughter, Rosemary | Article in Journal | | 1997 |
| A distinguished son of Leighlinbridge : Fr William Delany, S.J. (1835-1924) | Morrissey, Thomas J. | Article in Journal | | 1984 |
| A divided community : the effect of cultural divisions | Robb, John | Article in Book | | 1992 |
| A document concerning the Irish Privy Council's policy towards Catholicism (1629) | Mac Cuarta, Brian | Article in Journal | | 2009 |
| A dominant church : the diocese of Achonry 1818-1960 | Swords, Liam | Monograph or Collective Volume | Columba | 2004 |
| A Donegal priest who achieved greatness in the new world | King, C. A. | Article in Journal | | 1985 |
| A Dublin convert roll : the diary of the Rev. P. E. O'Farrelly | O'Connell, Philip | Article in Journal | | 1949 |
| A Dublin Diocesan Cleric in Buenos Aires | Walsh, Edward | Article in Journal | | 2023 |
| A failed revolution? the Irish Confederate war in its european context | Ohlmeyer, Jane H. | Article in Journal | | 1995 |
| A false American imprint on a Catholic apologetic work of 1816 linked to a provincial Irish printer | O'Keefe, Doris N. | Article in Journal | | 1999 |
| A famous bishop from the banks of the Bandon | Carroll, Finbarr | Article in Journal | | 1993 |
| A fearful people : religion and the Ulster conflict | Wells, Ronald A. | Article in Journal | | 1993 |
| A foe to tyranny : Rev. Edmund Mulcahy, P.P.U.F. | Muleahy, John | Article in Journal | | 2000 |
| A forgotten army; the Irish Yeomanry | Blackstock, Alan | Article in Book | Pen & Sword Books | 2018 |
| A forgotten Irish theologian | Gwynn, Aubrey | Article in Journal | | 1974 |
| A forgotton Sligo-born patriot | McTernan, John C. | Article in Journal | | 2017 |
| A fourteenth-century scholar and primate : Richard FitzRalph in Oxford, Avignon and Armagh | Walsh, Katherine | Monograph or Collective Volume | Clarendon Press | 1981 |
| A Franco-Irish solution? : Francois Mauriac, Kate O'Brien and the Catholic intellectual novel | Ryan, Angela | Article in Book | | 2004 |
| A friend of education | Faulkner, Pádraig | Article in Journal | | 1998 |
| A friend of Nano Nagle : Laurence Callanan, O.F.M. (1739-1818) | Fennessy, Ignatius | Article in Journal | | 2000 |
| A future for Irish studies, 1 | Foster, John Wilson | Article in Journal | | 1988 |
| A Galway man meets John Brown before he was 'Mouldering in the grave' | O'Loughlin, Thomas | Article in Book | | 2015 |
| A gifted scholar and saintly priest from Bagenalstown | Anonymous | Article in Journal | | 2000 |
| A glance at five Cistercian Abbeys of the South-East | de Vál, Seamus S. | Article in Journal | | 2008 |
| A glimpse of Navan and Donaghmore in Penal times | Mulvany, Vincent | Article in Journal | | 2011 |
| A grand game of hurling & football : sport & nationalism in old Toronto | Ryan, DennisWamsley, Kevin | Article in Journal | | 2004 |
| A Great Irish Archbishop : Daniel Mannix, Archbishop of Melbourne | Murphy, Frank | Article in Journal | | 1965 |
| A great Irish chaplain : Father John Gwynn, S.J. | Bithrey, John | Monograph or Collective Volume | The author | 1954 |
| A great Irish missionary : Bishop Joseph Shanahan | Leen, Edward | Article in Journal | | 1944 |
| A great Irish missionary : Dr Joseph Shanahan, C. S. Sp. (1870-1943) | Ronayne, T. | Article in Journal | | 1944 |
| A guide to eighteenth-century reports on Irish dioceses in the archives of Propaganda Fide | Fenning, Hugh | Article in Journal | | 1968 |
| A guide to the Irish Jesuit Province archives | Redmond, Stephen | Article in Journal | | 1996 |
| A hard auld station : musings on St. Colmcille's Church, Swords | Marks, Bernadette | Monograph or Collective Volume | Swords Historical Society | 2004 |
| A haven of popery : English Catholic migration to Ireland in the age of plantations | Edwards, David, 1963- | Article in Book | | 2005 |
| A heroine of the apostolate (1907-1944), Edel Quinn, envoy of the Legion of Mary to Africa | Suenens, Léon Joseph | Monograph or Collective Volume | [s.n.] | 1954 |
| A hidden church : the diocese of Achonry 1689-1818 | Swords, Liam | Monograph or Collective Volume | Columba | 1997 |
| A hidden Church? The structure of Catholic Dublin in the mid-eighteenth century | Burke, Nuala | Article in Journal | | 1974 |
| A history of Ballynaneashagh or St Otteran's Cemetery | Power, Dermot | Article in Journal | | 2014 |
| A history of Irish Catholicism | | Monograph or Collective Volume | Gill | 1968 |
| A history of Northern Ireland | Buckland, Patrick | Monograph or Collective Volume | Gill & Macmillan | 1981 |
| A history of Saint Denis parish | Barrett, Joseph | Article in Journal | | 1975 |
| A history of St Columba's College 1843-1974 | White, G. K. | Monograph or Collective Volume | Old Columban Society | 1980 |
| A history of St Mary's church, Gowran | Kehoe, Imelda | Monograph or Collective Volume | Gowran Development association | 1992 |
| A history of the Catholic church for schools | O'Doherty, J. F. | Monograph or Collective Volume | National Press | 1943 |
| A history of the Catholic Church for schools. Vol. 4 | Mahony, J. | Monograph or Collective Volume | Educational Company of Ireland | 1950 |
| A history of the Christian Brothers in Limerick, part 1 | Ahern, Richard | Article in Journal | | 1987 |
| A history of the Christian Brothers in Limerick, part 2 | Ahern, Richard | Article in Journal | | 1987 |
| A history of the diocese of Cork : from reformation to the penal era | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1982 |
| A history of the diocese of Cork : the episcopate of William Delany : 1847-1886 | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1993 |
| A history of the diocese of Cork from the penal era to the Famine | Bolster, Evelyn | Monograph or Collective Volume | Tower Books | 1989 |
| A history of the diocese of Raphoe | Maguire, Edward | Monograph or Collective Volume | [s.n.] | 1920 |
| A history of the foundation of the Congregation of the Sacred Hearts of Ireland | Clancy, Philip | Monograph or Collective Volume | Sacred Heart Community | 1991 |
| A history of the Irish Guild of Catholic Nurses : seventy five years of service 1922-1997 | Henry, Hanora M. | Monograph or Collective Volume | Irish Guild of Catholic Nurses | 1998 |
| A history of the medieval diocese of Cloyne | MacCotter, Paul | Monograph or Collective Volume | Columba | 2013 |
| A house divided | MacNerney, James P. | Article in Journal | | 2006 |
| A hundred years ago : a glance at the former position of English and Irish catholics. | Gasquet, Francis Aidan | Article in Book | | 1912 |
| A hundred years on. St Bride's Church Ballintober | Brady John | Article in Journal | | 1998 |
| A Jesuit mission in 17th century Munster : some references to activities of the society in Cork | O'Connell, W. D. | Article in Journal | | 1942 |
| A journalist bishop in New Zealand | De Vál, Seamus S. | Article in Journal | | 2006 |
| A journey ... a dream : the Drumshanbo nuns' story, 1864-2000 | Horan, Margaret V. | Monograph or Collective Volume | The author | 2000 |
| A journey to Ceylon | Aloysius of Mary, Brother | Article in Journal | | 1985 |
| A Journey to Lough Derg | Butler, Isaac | Article in Journal | | 1892 |
| A Killaloe priest in France : John Baptist Walsh, (1750-1825) | Anonymous | Article in Journal | | 1964 |
| A Kilruane priest in the U.S.A. : Rev. Patrick O’Meara | Whyte, Edward | Article in Journal | | 1996 |
| A late eighteenth-century Catholic chapel at Kilmurry, county Wicklow | Corlett, ChrisHicks, Therese | Article in Journal | | 2018 |
| A lawyer in politics : the career of Sir Richard Nagle c. 1636-1699 | McGuire, James | Article in Book | | 2003 |
| A letter from the Venerable Ignatius of St Paul Spencer, C.P., and the prayers of the Irish for the conversion of England | Cunningham, John M. | Article in Journal | | 2024 |
| A letter of Nicholas Slevin, 1817 | Ó Súilleabháin, Pádraig | Article in Journal | | 1968 |
| A life of Patrick Cardinal O'Donnell | Gallagher, John P. | Thesis | | 1975 |
| A link with the past - "House Stations" | Gavagan, Marian | Article in Journal | | 2005 |
| A list of 'Pontificalia' in Dunleer Parish register, 1776 | Murtagh, Michael | Article in Journal | | 2008 |
| A list of 17th-century Dublin diocesan priests | O'Riordan, W. M. | Article in Journal | | 1962 |
| A list of Catholic merchants in Cork in 1762 | Cussen, Robert | Article in Journal | | 1971 |
| A list of Dominicans in Ireland, 1657 | NA | Article in Journal | | 1983 |
| A list of Irish emigrants from Stamullen Catholic parish, Co. Meath | Wight, Judith Eccles | Article in Journal | | 1991 |
| A list of sources in Irish Religious Demography, c.1660-c.1861 | Gurrin, BrianKennedy, LiamMiller, Kerby A. | Article in Journal | | 2023 |
| A list of the priests, secular and regular, of the diocese of Dublin in the year 1697 | O'Riordan, W. M. | Article in Journal | | 1955 |
| A list of those from county Wexford implicated in the 1641 rebellion | Whelan, Kevin | Article in Journal | | 1990 |
| A lodge of Irishmen at Lisbon, 1738 | Vatcher, S. | Article in Journal | | 1971 |
| A long journey : the Irish in Scotland | Aspinwall, Bernard | Article in Book | | 1996 |
| A Loreto ray of hope | O'Donoghue, Máire | Article in Journal | | 2011 |
| A loyal Catholic sermon of 1798 | Gray, John | Article in Journal | | 1987 |
| A man for his season : bishop Neil Farren of Derry, 1939-1973 | Canning, B. J. (Bernard J.) | Article in Journal | | 1989 |
| A man for our time : a short life of Edmund Rice, 1762-1844 | Blake, Donal | Monograph or Collective Volume | Vertias | 1996 |
| A man of the Universal Church : Peter James Kenney, S.J., 1779-1841 | Morrissey, Thomas J. | Article in Journal | | 1999 |
| A man who 'did not seek the society of many': Bishop Edward McGennis (1846-1906) | Kelly, Liam | Article in Journal | | 2022 |
| A man with a mission | Graham, Tommy | Article in Journal | | 1993 |
| A Mass path | Allen, Gregory | Article in Journal | | 2003 |
| A medallion of John's Lane chapel in 1840 : whodunnit and why? | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1992 |
| A meeting minds? : Margaret Aylward and Paul Cullen | Close, Anne-Marie | Article in Book | | 2011 |
| A meeting of priests in Co. Derry, 1669 | Lynch, Anthony | Article in Journal | | 1991 |
| A memoir of Peter Begley OFM on observance in the Irish province (1928-34) | Fennessy, Ignatius, OFM | Article in Journal | | 2010 |
| A memorable day in Letterkenny | McClintock, May | Article in Journal | | 2008 |
| A message from heaven : the life and crimes of Father Seán Fortune | O'Connor, Alison | Monograph or Collective Volume | Brandon | 2000 |
| A modern apostle of Dublin : Father Peter Kenney, S. J. (1779-1841) | Savage, R. B. | Article in Journal | | 1941 |
| A monastic landscape : the Cistercians in medieval Leinster | Lynch, Bridget | Thesis | | 2008 |
| A monument ot Archbishop Thomas Walsh in the town of Cashel, Co. Tipperary | Fitzpatrick, Liz | Article in Journal | | 1994 |
| A more visible presence : Catholics in early twentieth-century Armagh | McVeigh, Mary | Article in Journal | | 2010 |
| A narrative of the case of Miles Crowly | Herlihy, Kevin | Article in Book | | 1996 |
| A nation of extremes : the pioneers in twentieth-century Ireland | Ferriter, Diarmaid | Monograph or Collective Volume | Irish Academic Press | 1999 |
| A nineteenth century house - and the men who lived therein (part 3) : Fr. Charles Flanagan P.P. V.G. (1863-68) | Hasson, Seamus | Article in Journal | | 1987 |
| A nineteenth century parochial house - and the men who lived therein (part 5) : Fr. Michael Tracy P.P., V.F. (1876-90) | Hasson, Seamus | Article in Journal | | 1990 |
| A nineteenth century parochial house - and the men who lived therein, part 2 | Hasson, Seamus | Article in Journal | | 1986 |
| A nineteenth century parochial house and the men who lived there : (parts 6 and 7) : Fr Edward Loughrey, PP, 1890-1915 | Hasson, Seamus | Article in Journal | | 1992 |
| A nineteenth century parochial house and the men who lived therein | Hasson, Seamus | Article in Journal | | 1985 |
| A nineteenth-century parochial house - and the men who lived therein. (Parts 8-9) Fr Edward Loughrey, P.P. (1890-1915) | Hasson, Seamus | Article in Journal | | 1994 |
| A ninteenth century parochial house - and the men who lived therein (part 4) : Fr. Daniel Mooney, P.P., V.F., (1868-76) | Hasson, Seamus | Article in Journal | | 1989 |
| A notable convert | O'Connor, R. F. | Article in Journal | | 1914 |
| A notable Devon knight : Sir William Courtenay, 1553-1630 | Roberts, John | Article in Journal | | 1956 |
| A note on Anthony O'Donnell, O.F.M., Bishop of Raphoe, 1750-55 | Conlan, Patrick, 1940- | Article in Journal | | 1997 |
| A note on Berkeley and his Catholic countrymen | Berman, David | Article in Journal | | 1978 |
| A note on Dopping's form of recantation | Hennig, John | Article in Journal | | 1965 |
| A note on James Archer, S. J., 1550? - 1620? | Bergin, Denis | Article in Journal | | 1968 |
| A note on the dairteach | Manning, Conleth | Article in Book | | 2015 |
| A page of Irish history : story of University College, Dublin, 1883-1909 | Fathers of the Society of Jesus | Monograph or Collective Volume | Talbot Press | 1930 |
| A painter of Living Art : Jack P. Hanlon, 1913-1968 | Coleman, John | Article in Journal | | 1988 |
| A pamphlet in French on the banishment of Catholic clergy from Ireland in 1653 | | Article in Journal | | 2012 |
| A papal 'Bull' from Ennis Friary | Ó Dálaigh, Brian | Article in Journal | | 2005 |
| A Papal Bulla at Rothe House Museum | O'Doherty, Sean | Article in Journal | | 1983 |
| A parish choir in times of reformation | Daly, Kieran | Article in Book | | 2018 |
| A past apart : studies in the history of Catholic Belfast 1850-1950 | Hepburn, Anthony C. | Monograph or Collective Volume | Ulster Historical Foundation | 1996 |
| A pastoral instruction in the Irish language from the Right Rev. Gerald Teahan, bishop of Kerry to his diocesans in 1794 | | Article in Journal | | 1939 |
| A pastoral letter to the catholic clergy of the united dioceses of Waterford and Lismore | Hussey, Thomas | Monograph or Collective Volume | | 1797 |
| A pastoral of Archbishop O'Reilly, 1788 | | Article in Journal | | 1961 |
| A pastoral vision : Canon Joseph Guinan and the clerical social project in Edwardian Ireland | Maume, Patrick | Article in Journal | | 2005 |
| A path to perfection : translations from French by Catholic women religious in nineteenth-century Ireland | Milan, Michèle | Article in Book | | 2016 |
| A patriot priest : the life of Father James Coigly, 1761-1798 | | Monograph or Collective Volume | Cork University Press | 1998 |
| A pen-portrait of the clergy serving in Loughrea from 1884-1919 | Kelly, Declan | Article in Book | | 2003 |
| A people's church. The diocese of Achonry, the first thousand years : from the sixth to the seventeenth century | Swords, Liam | Monograph or Collective Volume | Columba | 2013 |
| A personal experience of Christianity, 1912-1987 | Sweetman, Michael, SJ | Article in Journal | | 1986 |
| A picture of nativism : Maggie's New York | McGuire-Driver, Helen | Article in Journal | | 2002 |
| A Pilgrimage of Privilege - 6th July 2014, a walk through history on the Caslan Hills, Strokestown, Co. Roscommon | Gillooly (née Bowens), Mary | Article in Journal | | 2019 |
| A plurality of Irelands : regions, societies and mentalities | Smyth, W. J. (William John), 1944- | Article in Book | | 1997 |
| A politically inconvenient aspect of history : the unpublished official history of the Gaelic Athletic Association of 1934 | Keating, Anthony | Article in Journal | | 2017 |
| A portrait of the rector : Father John Conmee, S.J. | Murray, Patrick | Article in Journal | | 1968 |
| A postscript to 1798: five letters of Myles Prendergast O.S.A. | Keogh, Dáire | Article in Journal | | 2009 |
| A pre-Famine murder in county Limerick | Curtis, Noreen | Article in Journal | | 2010 |
| A previously unnoticed letter of Oliver Plunkett | | Article in Journal | | 1975 |
| A priest in politics : Rev. Thomas Tyrell, P. P., Tinryland, 1823-43 | Kavanagh, P. J. | Article in Journal | | 1976 |
| A priest on the run : William Tirry, OSA, 1608-1654 | O'Connor, John | Monograph or Collective Volume | Veritas | 1992 |
| A priest remembers | Sweeney, Owen | Article in Journal | | 1995 |
| A priest's will, Maynooth, Co. Kildare, 1604 | Mac Cuarta, Brian | Article in Journal | | 2013 |
| A prisoner for the poor, Margaret Aylward (1810-1889) : a memoir | Gibbons, Margaret | Monograph or Collective Volume | Irish Messenger Publications | 1967 |
| A profest papist : Bishop John Gordon | Taylor, T. F. | Monograph or Collective Volume | | 1958 |
| A profile of Bernard Burke (1789-1861) | McGuire, Shane | Article in Journal | | 1987 |
| A propaganda Fide letter-book concerning Ireland, 1672-4 | | Article in Journal | | 1955 |
| Á propos des mariages mixtes en Irlande | Laulo-Smith, Marie Alice | Article in Journal | | 1987 |
| A Protestant pioneer of Catholic emancipation | Rogers, Patrick | Article in Journal | | 1995 |
| A question of class? relations between bishops and lay leaders in Ireland and Newfoundland 1783-1807 | McNally, Vincent J. | Article in Journal | | 1998 |
| A Question of Rescue Work or Abduction : Eliza McDermot, Legal Opinion, and Anti-Convent Prejudice in Victorian England | Kollar, René | Article in Journal | | 2008 |
| A radical priest in Mayo, Fr. Patrick Lavelle : the rise and fall of an Irish nationalist, 1825-86 | Moran, Gerard | Monograph or Collective Volume | [s.n.] | 1994 |
| A Redemptorist missionary in Ireland, 1851-1854 : memoirs by Joseph Prost, CSsR | | Monograph or Collective Volume | Cork University Press | 1998 |
| A rediscovered letter of Sylvester O'Halloran to Dr de Salis | Lyons, Claire E. | Article in Journal | | 2007 |
| A remarkable nun - Sister Mary Columba Hasson | O'Flanagan, Nora Pat, Sr. | Article in Journal | | 1998 |
| A rich inheritance : Galway Dominican nuns, 1644-1994 | O'Neill, Rose | Monograph or Collective Volume | Dominican Sisters | 1994 |
| A road less travelled : tales of the Irish missionaries | | Monograph or Collective Volume | Open Air, an imprint of Four Courts Press | 2011 |
| A rooted horror : Thomas D'Arcy McGee and secret societies, 1845-68 | Wilson, David A. | Article in Journal | | 2005 |
| A Russian missionary in Ferns. Father Vladimir Petcherine, C.S.S.R., 1807-1885 | Jones, Frederick M. | Article in Journal | | 1995 |
| A saint for eighteenth-century Dublin? Father John Murphy | Barnard, T. C. (Toby Christopher) | Article in Book | | 2016 |
| A school for church music in Ireland : the evidence of Irish periodical literature | O'Donovan, Ite | Article in Book | | 2018 |
| A selection of sources dealing with the nativist riots of 1844 | Schmandt, Raymond H. | Article in Journal | | 1969 |
| A separate culture? : Irish Catholics in working-class Manchester and Salford, c1890-1939 | Fielding, Steven | Article in Book | | 1992 |
| A seventeenth-century Hiberno-Breton hagiological exchange | Dumville, David N. | Article in Book | | 1991 |
| A seventeenth-century manuscript report of the Amazon region | Hazard, Benjamin | Article in Book | | 2015 |
| A seventeenth-century pilgrim from county Kilkenny | Nugent, Louise | Article in Journal | | 2015 |
| A sexual life, a spiritual life : a painful journey to inner life | Buckley, Pat | Monograph or Collective Volume | Liffey Press | 2005 |
| A shared childhood : the story of the integrated schools in Northern Ireland | O'Connor, Fionnuala | Monograph or Collective Volume | Blackstaff Press | 2002 |
| A short ecclesiastical survey of Golden Kilfeacle to serve as a memory of the re-opening of the church of the Blessed Sacrament, Golden | Ní Chearra, Máire | Monograph or Collective Volume | The author | 1991 |
| A short history of 'Our Lady Star of the Sea' Church, Strangford | McConville, Michael | Article in Journal | | 1988 |
| A short history of a Catholic parish 600-1850 A.D. | Mulcahy, J. | Article in Journal | | 1989 |
| A short history of some Dublin parishes. Parts 15-17 | Donnelly, Nicholas | Monograph or Collective Volume | Carraig Books | 1983 |
| A short history of the attempts ... to convert the popish natives of Ireland to the Established Religion with a Proposal for their Conversion | Richardson, John | Monograph or Collective Volume | | 1712 |
| A short history of the Diocese of Elphin | Mooney, Canice | Article in Book | | 2000 |
| A short-title calendar of "Hibernia", vol. 3 (1877-88) in the General Archives of the Friars Minor, Rome : part 2, ff 401-809 | Conlan, Patrick, 1940- | Article in Journal | | 1983 |
| A short-title calendar of "Hibernia", vol. 4 (1889-93) in the General Archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1984 |
| A short-title calendar of 'Hibernia', vol. 3 (1877-88), in the General Archives of the Friars minor, Rome : part 1, ff 1-400 | Conlan, Patrick, 1940- | Article in Journal | | 1982 |
| A short-title calendar of 'Hibernia', vol.2 (1870-6) in the general archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1979 |
| A short-title calendar of Hibernia, 5 : 1894-9, and of Irish material in Saxonia S. Crucis, 3 : 1890-1900, in the General Archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1985 |
| A short-title calendar of Hibernia, vol. 6 (1888-1892), in the general archives of the Friars Minor, Rome | Conlan, Patrick, 1940- | Article in Journal | | 1993 |
| A short-title calendar of the papers of Archbishop Daniel Murray : Irish College, Paris, Part 2 (1814-1852) | Sheehy, David C. | Article in Journal | | 2006 |
| A short-title calendar of the papers of Archbishop James Butler II in Archbishop's House, Thurles | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop James Butler II in archbishop's house, Thurles, 1, 1764-86 | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop James Butler II in Archbishop's House, Thurles, part 2, 1787-91 | Tierney, Mark | Article in Journal | | 1978 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles : Part 2, 1840-1845 | Tierney, Mark | Article in Journal | | 1990 |
| A short-title calendar of the papers of archbishop Michael Slattery in archbishop's house, Thurles : part 4, 1847 | Tierney, Mark | Article in Journal | | 1993 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles : Part 7, 1853-6 | Tierney, Mark | Article in Journal | | 2006 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles, 3 : 1846 | Tierney, M. | Article in Journal | | 1991 |
| A short-title calendar of the papers of Archbishop Michael Slattery in Archbishop's House, Thurles. Part. 5 : 1848, Part 6: 1849-1852 | Tierney, Mark | Article in Journal | | 1994 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles : 2, 1886-1890 | Tierney, Mark | Article in Journal | | 1973 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles : part 1, 1841-1885 | Tierney, Mark | Article in Journal | | 1971 |
| A short-title calendar of the papers of Archbishop Thomas William Croke in Archbishop's House, Thurles. Pt. 1, 1841-85; pt. 2, 1886-1890; pt. 3, 1891-1902 | | Article in Journal | | 1974 |
| A short-title calendar of the reception and profession books of the English Franciscans in Killarney 1860-1902 | Conlan, Patrick, 1940- | Article in Journal | | 2000 |
| A short-title calender of 'Hibernia', vol. 1 (1706-1869) in the general archives of the Friars Minor, Rome | Conlon, Patrick | Article in Journal | | 1978 |
| A short-title calender of the papers of Archbishop William Croke in Archbishop's House, Thurles, 2 : 1886-1890 | Tierney, Mark | Article in Journal | | 1974 |
| A short-title catalogue of the papers of Archbishop Michael Slattery in Archbishop's house, Thurles. Part 3, 1846 | Tierney, M. | Article in Journal | | 1991 |
| A Skerries bishop | Halpin, P. | Article in Journal | | 1998 |
| A Spanish Franciscan archbishop of Dublin : Fr Matthew of Oviedo, O. F. M. | Barrett, Fergus | Article in Journal | | 1941 |
| A spirited letter from 1856 | Doddy, Padraig | Article in Journal | | 2017 |
| A stormy decade in the Irish College, Paris, 1849-59 | Ó Fearghail, Feargus | Article in Book | | 1978 |
| A study of priests' wills in the Roman Catholic Diocese of Limerick (1878-1917) | Tobin, Matthew | Article in Journal | | 2003 |
| A study of religious statistics in Ireland | Gannon, Patrick Joseph | Article in Journal | | 1921 |
| A study of the composition of the episcopate and episcopal activities in the ecclesiastical province of Cashel, c.1400-1431 | Kelleher, Donal Anthony | Thesis | | 1988 |
| A study of the John Hughes-Terence Donaghoe friendship | Coogan, M. Jane | Article in Journal | | 1982 |
| A study of the relationship between the Catholic Church, nationalism and republicanism with particular reference to the Northern Ireland conflict since 1968 | Devine, Angela Yvonne | Thesis | | |
| A study of two New York Irish-American newspapers in the early nineteenth century | McShane, Kieran | Article in Journal | | 1993 |
| A supplement to the report on the state of popery in Ireland in 1731 : an anti-fraternal bias | Fennessy, Ignatius | Article in Journal | | 2000 |
| A survey of research and writing about Roman Catholic women's congregations in Great Britain and Ireland | O'Brien, Susan | Article in Book | | 2004 |
| A tale from a biscuit tin | Meehan, Michael J. | Article in Journal | | 2017 |
| A tale of two abbots | Lincoln, Siobhán | Article in Journal | | 1986 |
| A tale of two Dalgans | Canavan, Louise | Article in Book | | 2015 |
| A tale of two schools : educating Catholic female deaf children in Ireland, 1846–1946 | O'Connell, Noel Patrick | Article in Journal | | 2016 |
| A textual history of the Spiritual Rose | McKenna, Malachy | Article in Journal | | 1991 |
| A theatre of the unword : censorship, hegemony
and Samuel Beckett | Johnson, Nicholas | Article in Book | | 2014 |
| A theology thesis defended by an Irish clerical student in Paris in 1739 | | Article in Journal | | 1997 |
| A time for sowing : the St. John of God brothers in Ireland : a centenary record 1879-1979 | Purcell, Mary | Monograph or Collective Volume | Brothers of St. John of God | 1979 |
| A time of change and consolidation - Ferns in the nineteenth century | Morris, Fintan | Article in Book | | 1999 |
| A town called Saint Patrick | MacNerney, James P. | Article in Journal | | 2006 |
| A tribute to the memory of Sr. M. Joseph Ruby | Kelly, Mary | Article in Journal | | 2000 |
| A true historical relation of the conversion of Sir Tobie Matthew | Ó Maidín, Pádraig | Article in Journal | | 1965 |
| A turbulent year: Lord Anglesey’s first viceroyalty and the politics of Catholic emancipation, 1828 | Holton, Karina | Article in Journal | | 2017 |
| A typical anomaly? the success of the Irish counter-reformation | Ó hAnnracháin, Tadhg | Article in Book | | 2003 |
| A Ventry convert group, 1842 | De Brún, Pádraig | Article in Journal | | 1980 |
| A Victorian atheist encounters Roman-Catholic Ireland | Armstein, Walter L. | Article in Book | | 2005 |
| A virtuous alliance : muscular and musical Christianity in late nineteenth-century Limerick | Hayes, Tom | Article in Book | | 2009 |
| A vision of hell in early modern Ireland | O'Hara, Tana | Article in Journal | | 1997 |
| A vision of Ireland, 1967 : John Montague’s aisling ghéar | Herron, Tom | Article in Journal | | 2019 |
| A voice from the Jacobite underground : Liam Inglis (1709-1778) | Ó Ciardha, Éamonn | Article in Book | | 1998 |
| A voyage into Catholicism : Irish travel to Italy in the nineteenth century | O'Connor, Anne | Article in Journal | | 2016 |
| A voyage to Australia | Casey, GerardDunne, Michael | Article in Journal | | 2001 |
| A weary task : the struggle in retrospect | Anonymous | Article in Book | | 1954 |
| A widening horizon : Catholic sisterhoods on the Northern plains, 1874-1910 | Peterson, Susan | Article in Journal | | 1985 |
| A wounded church : religion, politics and justice in Ireland | McVeigh, Joe | Monograph or Collective Volume | Mercier Press | 1989 |
| A ‘Primitive Germ of Discord’
in the North Atlantic World: Newfoundland-Irish
Roman Catholics in Scottish Cape Breton | Ludlow, Peter | Article in Journal | | 2009 |
| A ‘sentinel(s) of our liberties’ : Archbishop John Hughes and
Irish-American intellectual negotiation in the Civil War era | Kelly, Mary C. | Article in Journal | | 2010 |
| A ‘sentinel(s) of our liberties’ : archbishop John Hughes and Irish-American intellectual negotiation in the Civil War era | Kelly, Mary C. | Article in Journal | | 2010 |
| Ab Waterfordia ad Urbem : clerical networks between Waterford and Rome during the early modern period | Binasco, Matteo | Article in Book | | 2026 |
| Ábhair sagart agus an t-Eirí amach | de Vál, Seamus S. | Article in Journal | | 1998 |
| Abraham Brownrigg. Carlovian and eminent churchman | Murphy, Rory | Article in Journal | | 1996 |
| Abram Ryan, priest and poet | Nevin, May | Article in Journal | | 1940 |
| Accommodation and resistance : a comparison of cultural identities in Ireland and Wales, c.1880-1914 | O'Leary, Paul | Article in Book | | 1998 |
| Accommodations with the Protestant state and church : a comparative study of respective Dutch and Irish Catholic experiences | Downey, Declan M. | Article in Book | | 2011 |
| Accusations of Oliver Plunkett | Mooney, Canice | Article in Journal | | 1956 |
| Achill : the famine and religious conflict | O'Shea, John | Article in Journal | | 1996 |
| Achonry and its churches: from the sixth century to the third millenium | Swords, Liam | Monograph or Collective Volume | Éditions du signe | 2007 |
| Across "The Big Wather" : the Irish-Catholic community of mid-nineteenth century Pittsburgh | Walsh, Victor A. | Article in Journal | | 1982 |
| Acta capitulorum Provinciae Hiberniae Sacri Ordinis Praedicatorum, 1669-1688 | | Monograph or Collective Volume | Dominican | 1989 |
| Acta Sacrae Congregationis de Propaganda Fide, 1622-50 | | Article in Journal | | 1959 |
| Action and reaction : Catholic lay organisations in Dublin in the 1920s and 1930s | Dunne, Eamonn | Article in Journal | | 1994 |
| Acts of "national communion" : the centenary celebrations for Catholic emancipation, the forerunner of the Eucharistic Congress | McIntosh, Gillian | Article in Book | | 1999 |
| Administrative documents relating to the pre-reformation church in the diocese of Meath, c.1518 | Scott, Brendan | Article in Journal | | 2008 |
| Adolescent architecture and after. The formative years of Timothy Hevey (1846-78) | O'Reilly, Seán | Article in Journal | | 1996 |
| Advocacy, the Enlightenment, and the Catholic print trade in Mathew Carey's Dublin | Wolf, Nicholas M. | Article in Journal | | 2014 |
| Aegidius Chaissy, O.F.M., and James Ussher, Protestant bishop of Armagh | Giblin, Cathaldus | Article in Journal | | 1956 |
| Aengus Finucane : in the heart of concern | Purcell, Deirdre | Monograph or Collective Volume | New Island | 2014 |
| After the wake - an alternative to Cullen's church | Coll, Niall | Article in Journal | | 1999 |
| Afterlives : testimonies of Irish Catholic mothers on infant death and the fate of the unbaptized | Kennedy, Liam | Article in Journal | | 2021 |
| Afterword : the plain people of God | Mac Réamoinn, Seán | Article in Book | | 1986 |
| Ag smaoineamh ar an gCairdinéal | Ó Dufaigh, Seosamh | Article in Journal | | 1992 |
| Age, region and marriage in post-famine Ireland : an empirical examination | McKenna, E. E. | Article in Journal | | 1978 |
| Agents of altruism : the Great Irish Famine and Italian civil society (1847) | Zavatti, Francesco | Article in Journal | | 2021 |
| Agostiniani e Scotisti : il contributo irlandese alla teologia della Controroforma nell'Europa continentale | Downey, Declan M. | Article in Book | | 2001 |
| Ahamlish Parish, Co. Sligo, 1800-1880: a time of much change | McKeon, John | Article in Journal | | 2021 |
| Alas, poor Mogue! The journey, 1798-1953. 1798 revisited | Kavanagh, Myles | Article in Journal | | 2018 |
| Alasdair MacDonnell | Kennedy, David | Article in Journal | | 1947 |
| Alessandro Cellini (1830-88) and Catholic church music in Dublin : a preliminary assessment | Lawrence, Frank | Article in Book | | 2018 |
| Alexander Prince Hohenlohe and his miraculous cures in early nineteenth-century Europe and America | Cronin, Elizabeth | Article in Journal | | 2014 |
| Alfred O'Rahilly, 3 : Controversialist. Part 2 : Catholic apologist | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1993 |
| Alfred O'Rahilly. Vol. 1 : academic | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1986 |
| Alfred O'Rahilly: creative revolutionary | Gaughan, J. Anthony, 1932- | Article in Journal | | 2016 |
| Alice O'Sullivan, Clonmel missionary and martyr (1836-1870) | Chadwick, Áine Máire | Article in Journal | | 2001 |
| All Hallows College and Stillorgan | Sobolewski, Peter | Article in Journal | | 2018 |
| All Saints, Drimoleague, and Catholic visual culture under Bishop Cornelius Lucey in Cork, 1952-9 | Butler, Richard J. | Article in Journal | | 2015 |
| All the bishops' men | Mooney, Tom | Monograph or Collective Volume | Collins Press | 2011 |
| All the king's men : the impact of the crown's Irish soldiers on the English civil war | Malcolm, Joyce Lee | Article in Journal | | 1979 |
| All were together, seemingly conspiring | Matthiesen, Leroy T. | Article in Journal | | 2005 |
| Allies or antagonists? : Irish Catholicism and Irish republicanism during the 1980s | O'Hagan, Dara | Thesis | | 1998 |
| Altar boy : a story of life after abuse | Madden, Andrew | Monograph or Collective Volume | Penguin | 2003 |
| Alternative allegiances in early modern Ireland | Clarke, Aidan | Article in Journal | | 1992 |
| Alternative establishments? Insular Catholicism and Presbyterianism | Armstrong, RobertÓ hAnnracháin, Tadhg | Article in Book | | 2013 |
| Altinure Church | Donnelly, Philip | Article in Journal | | 2002 |
| Ambassador extraordinaire : Daniel O'Daly 1595-1662 | Mac Curtain, Margaret | Monograph or Collective Volume | Arlen House | 2017 |
| Ambiguity in nationalism - the case of Ireland | MacDonagh, Oliver | Article in Journal | | 1981 |
| Ambiguous alliances : early modern Ireland | Bradshaw, Brendan | Article in Journal | | 2005 |
| Ambivalence towards the Saxon shilling : the attitudes of the Catholic church in Ireland towards enlistment during the first world war | Callan, Patrick | Article in Journal | | 1986 |
| America Methodism's 'Christian Advocate' and Irish Catholic immigration, 1830-1870 | Van Dussen, D. Gregory | Article in Journal | | 1991 |
| American Catholic lay groups and transatlantic social reform in the progressive era | Moloney, Deirdre | Monograph or Collective Volume | University of North Carolina Press | 2002 |
| American Catholic women : a historical exploration | | Monograph or Collective Volume | Macmillan | 1989 |
| American Catholicism and the Irish from colonial times to 1870 | Rafferty, Oliver P. | Article in Book | | 2024 |
| American Catholics and the Irish land league, 1879-1882 | Green, J. J. | Article in Journal | | 1949 |
| American Civil War chaplain | O'Hara, Aidan | Article in Journal | | 2006 |
| American methodism's "Christian Advocate" and Irish catholic immigration, 1830-1870 | VanDussen, D. Gregory | Article in Journal | | 1991 |
| Amiens, Brisbane and Crimea : Paul Cullen and the Mercy Mission that led to the establishment of the Mater Hospital in Dublin | Ó hÓgartaigh, Margaret | Article in Book | | 2011 |
| Among the Ethiopian Orthodox : ecumenical challenges in a new missionary era | Cogavin, Brendan | Article in Book | | 2015 |
| Among the Irish martyrs : Dominic Collins, S.J., in his times (1566-1602) | Morrissey, Thomas J. | Article in Journal | | 1992 |
| An 18th century episcopal instruction for Ossory | Costello, Con | Article in Journal | | 1983 |
| An account of the Poor Clare Order in eighteenth-century Dublin | | Article in Journal | | 2012 |
| An admonition to the nobility and people of England and Ireland, concerning the present warres ... | Allen, William, cardinal, 1532-1594 | Monograph or Collective Volume | | 1588 |
| An alphabetical list of Dromore clergy mentioned in Roman documents of the eighteenth century | Kearns, Patrick | Article in Journal | | 1990 |
| An alternative establishment : the evolution of the Irish Catholic hierarchy, 1600-49 | Ó hAnnracháin, Tadhg | Article in Book | | 2013 |
| An amazing discovery | Doyle, Eamon | Article in Journal | | 2023 |
| An apostle of Catholic Dublin : Father Henry Young | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Browne and Nolan | 1944 |
| An apostle of nationality : Fr Eoghan O'Growney | Anonymous | Article in Journal | | 1945 |
| An appreciation. Very Rev. Tobias R. Furlong, P.P., R.I.P. | K., J. L. | Article in Journal | | 1976 |
| An appropriate time | Byrne, Dermot | Article in Journal | | 1997 |
| An archaeology of remembering and forgetting: 'good' and 'bad' deaths on Irish mariners' memorials | Mytum, Harold | Article in Journal | | 2016 |
| An Armagh Penal Cross of 1730 | Ó Fearghail, Fearghus | Article in Journal | | 2010 |
| An army sent from God : Scots at war in Ireland, 1642-1649 | Gillespie, Raymond | Article in Book | | 1991 |
| An Augustinian Provincial Chapter at Fatherd, 1649 | Fenning, Hugh | Article in Journal | | 2006 |
| An Beirnach: Milltown priest and Gaelic scholar | Carney, Noel | Article in Journal | | 2015 |
| An Br A.S. Ó Maoil Eoin, 1901-'68 : ‘Ar son Dé agus onóir na hÉireann' | Caomhánach, A. P. | Article in Book | | 1996 |
| An Br Iaróm Mac Giolla Phádraig, 1877-1910 : múinteoir ó nádúr | Mac Giolla Phádraig, S. D. | Article in Book | | 1996 |
| An Cairdinéal Tomás Ó Fiaich agus comhthéacs an chreidimh in Éirinn | Ó Maolfabhail, Donncha | Article in Journal | | 1992 |
| An Canónach Pádraig Ó Laoghaire (1853-1932) ó Chill Briotáin | Breathnach, DiarmuidNí Mhurchú, Máire | Article in Journal | | 1995 |
| An Canónach Séamus Goodman | Ó Fiannachta, Pádraig | Monograph or Collective Volume | Oidhreacht Chorca Dhuinhne | 1990 |
| An Canónach Uilleog De Búrca, 1829-1887 | Ó Maolmhuaidh, Proinsias | Article in Book | | 1997 |
| An chléir Chaitleacach, an léann dúchais agus an cultúr in Éirinn, c. 1750-c. 1850 | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 1986 |
| An Choróin Mhuire im iar-thuaisceart Thir Chonaill sa bhfichuí haois : suíomh do dheabhoid Mheánooiseach Euorpach, i geráifeacht agus saol traidisiúntu na ndaoine | Lysaght, Patricia | Article in Journal | | 1995 |
| An Dochtúir Ó Duinnshléibhe agus an Mhidheamhain | Ó Ceallaigh, Brian | Article in Journal | | 1946 |
| An Dr de Siún, Easpag Luimneach (1796-1813), agus and Ghaeilge | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| An early Catholic church at St Mullins, Co. Carlow | Manning, Conleth | Article in Journal | | 1999 |
| An East Clare priest : Fr. John Burke 1805-1881 | Burke, Brendan | Article in Journal | | 2005 |
| An efficacious Irish triumvirate : Paul Cullen, Tobias Kirby and Joseph Dixon | McKinney, Amy | Article in Book | | 2008 |
| An eighteenth-century bishop : John Carroll of Baltimore | Hennessy, J. | Article in Journal | | 1978 |
| An eighteenth-century minister and piper | Donnelly, Seán | Article in Journal | | 2000 |
| An eighteenth-century version of diasporic Irish identity | Byrne, Thomas | Article in Book | | 2005 |
| An eminent Franciscan of the emancipation era | Egan, Bartholomew, OFM | Article in Journal | | 1971 |
| An essay ... on ecclesiastical finance, as regards the Roman Catholic church in Ireland | Croly, D. O. | Monograph or Collective Volume | | 1834 |
| An extract from Bishop David Moriarty's diary, 1856 | O'Shea, Kieran | Article in Journal | | 1984 |
| An eye witness to history : Fr Alexander T. McCabe and the Spanish Civil War, 1936-1939 | Keogh, Dermot | Article in Journal | | 1994 |
| An Ghaeilge i Maigh Nuad | Ó hÉanacháin, Seán | Monograph or Collective Volume | Cló Iar-Chonnacht | 2016 |
| An hAthair William Baithe, C.I., 1564-1614 : ceannródaí sa teangeolaíocht | Ó Mathúna, Seán | Monograph or Collective Volume | Oifig an tSoláthair | 1980 |
| An historical and critical review of the civil wars in Ireland ... | [Curry, John] | Monograph or Collective Volume | | 1775 |
| An historical footnote to Cardinal O'Connell's Recollections | Christie, Francis | Article in Journal | | 1935 |
| An hourglass on the run : the story of a preacher | Feehan, James A. | Monograph or Collective Volume | Mercier Press | 2000 |
| An icon of sacrifice: 'The Last General Absolution of the Munsters' - the picture and its people | Hayes, John | Article in Journal | | 2015 |
| An immigrant bishop : John England's adaptation of Irish Catholicism to American Republicanism | Carey, Patrick W. | Monograph or Collective Volume | Catholic University of America Press | 2022 |
| An imperial harbinger: Sylvester O'Halloran's 'General History' (1778) | Lyons, Clare E. | Article in Journal | | 2015 |
| An Inquiry into certain vulgar opinions concerning the Catholic Inhabitants and the Antiquities of Ireland, in a series of letters, etc. | Milner, John, Bishop of Castabala | Monograph or Collective Volume | | 1808 |
| An inside view of the identity struggles of a member of a religious order in a changing culture from the late 1960's to the post Ryan report era in 21st century Ireland | McEvoy, Carmel | Thesis | | |
| An interrogation carried out in Cork in 1600 by the Ecclesiastical High Commission for Recusancy : a document from Laud ms. 612, Bodleian Library Oxford | Sheehan, A. J. (Anthony J.) | Article in Journal | | 1984 |
| An introduction to archives of Roman Catholic congregations of women religious in Ireland, with particular reference to genealogical research | Cosgrave, Marianne | Article in Journal | | 1997 |
| An introduction to sources on Nano Nagle | O'Farrell, Pius | Article in Journal | | 2005 |
| An introduction to the Central Catholic Library | MacGowan, Kenneth | Article in Journal | | 2004 |
| An introduction to the parish mission movement 1850-80 and its impact on the diocese of Kilmore | McGoohan, Ultan
| Article in Journal | | 2017 |
| An invitation to Australia : some documents of 1897-1898 | | Article in Journal | | 1976 |
| An Irish agent of the Counter-Reformation : Dominic O'Daly | Mac Curtain, Margaret | Article in Book | | 2019 |
| An Irish agent of the counter-reformation, Dominic O'Daly | Mac Curtain, Benvenuta | Article in Journal | | 1967 |
| An Irish bishop in penal times : the chequered career of Sylvester Lloyd, OFM, 1680-1747 | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1993 |
| An Irish Bollandus : Fr. Hugh Ward and the Louvain hagiographical enterprise | Breatnach, Pádraig A. | Article in Journal | | 1999 |
| An Irish Catholic Association pilgrimage to Luján, Province of Buenos Aires [c.1918] | Walsh, Edward | Article in Journal | | 2000 |
| An Irish chaplain with the army of Rochambeau | Walsh, Micheline Kerney | Article in Journal | | 1982 |
| An Irish convict priest | Egan, MichaelWhelan, Kevin | Article in Journal | | 1988 |
| An Irish counter-reformation bishop : John Roche | Corish, Patrick J. | Article in Journal | | 1959 |
| An Irish Dimension to a British Kulturkampf | Barr, Colin | Article in Journal | | 2005 |
| An Irish Franciscan missionary in South Africa | Egan, Bartholomew, OFM | Article in Journal | | 1975 |
| An Irish genealogical source : a guide to church records | | Monograph or Collective Volume | Ulster Historical Foundation | 1994 |
| An Irish grave on Monte Cassino : Father Benjamin Joseph Braughall, pilgrim priest of Kildare (1776-1847) | Concannon, Helena | Article in Journal | | 1947 |
| An Irish Jansenist in seventeenth-century France : John Callaghan 1605-54 | O'Connor, Thomas | Monograph or Collective Volume | National University of Ireland | 2005 |
| An Irish manuscript in western Australia : John Howard's prayer book | Brennan, Mary M. | Article in Book | | 2015 |
| An Irish missionary in Pretoria | McCormack, Barbara | Article in Book | | 2015 |
| An Irish papal zouave in 1870 | Teeling, Bartholomew | Article in Journal | | 1958 |
| An Irish Rose in Texas | Lynch, Muireann | Article in Journal | | 1993 |
| An Irish scholar abroad : bishop John O'Brien of Cloyne and the Macpherson controversy | Ó Catháin, Diarmaid | Article in Book | | 1993 |
| An Irish solution to an Irish problem : Catholicism, contraception and change, 1922–1979 | Girvin, Brian | Article in Journal | | 2018 |
| An Irish theologian in enlightenment France : Luke Joseph Hooke, 1714-96 | O'Connor, Thomas | Monograph or Collective Volume | Columba | 1995 |
| An Irish tragedy : how sex abuse by Irish priests helped cripple the Catholic Church | Rigert, Joe | Monograph or Collective Volume | Crossland Press | 2008 |
| An Irish-American journalist and Catholicism : Patrick Ford of the Irish World | Rodechko, James P. | Article in Journal | | 1970 |
| An Irish-speaking island : state, religion, community, and the linguistic landscape of Ireland, 1770-1870 | Wolf, Nicholas M. | Monograph or Collective Volume | University of Wisconsin Press | 2014 |
| An Irishman at world's end : the voyage of St Brendan on the Hereford map | Scully, Diarmuid | Article in Book | | 2015 |
| An Irishman before the Mexican inquisition, 1574-5 | Hair, Paul Edward Hedley | Article in Journal | | 1971 |
| An Irishman in Portugal | Caball, John | Article in Journal | | 1955 |
| An léann eaglasta san eaglais Chaitliceach | Ó Corcora, Seán | Article in Book | | 1988 |
| An O'Daly | Caball, John | Article in Journal | | 1946 |
| An open door : a history of the society of St Vincent de Paul, Galway, 1849-1999 | | Monograph or Collective Volume | Vincent de Paul Society | 1999 |
| An open door : the history of the society of St. Vincent de Paul in Limerick, 1846-1996 | Ryan, Bob | Monograph or Collective Volume | Society of St. Vincent de Paul | 1996 |
| An Ossory instruction of 1773 | Ó Ferghail, Fearghus | Article in Journal | | 1994 |
| An Ossory instruction of 1773 | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Article in Journal | | 1994 |
| An réalt : a aidhmeanna agus a thionchar | De Vál, Seamas S. | Monograph or Collective Volume | An Sagart | 2010 |
| An sagart agus an file in gcomtheacs a aimsire | Canny, Nicholas P. | Article in Book | | 1986 |
| An t-Athair Eoghan Ó Caoimh, priest poet of Doneraile | Shine, Michael | Article in Journal | | 1999 |
| An t-Athair Micheál Breathnach | Ó Murchadha, Tadhg | Article in Journal | | 1944 |
| An t-Athair Peadar : Father O'Leary | Michael,OFM | Article in Journal | | 1939 |
| An t-Athair Pól Breathnach | Ua Brádaigh, Tomás | Article in Journal | | 1966 |
| An t-Athair Tadhg Ó Murchú (1908-1971) | Breathnach, DiarmuidNí Mhurchú, Máire | Article in Journal | | 1999 |
| An t-Athair Tomás Ó Ceallaigh : priest, scholar and patriot | Tivnan, Frank | Article in Journal | | 1994 |
| An t-Athair Tomás Ó Ceallaigh agus a shaothar, maille le réamhrádh nótaí agus eile | Ó Láimhin, Tomás S. | Monograph or Collective Volume | Complacht Foillsighthe an Iarthair | 1943 |
| An tArdeaspag Mac hÉil agus an Cairdinéal Ó Cuilinn | Ó Báin, Liam | Article in Book | | 1983 |
| An tArdeaspag Micheál Ó Síothcháin | Breatnach, Úna | Article in Journal | | 1997 |
| An tAthair Brasbie | De Brún, Pádraig | Article in Journal | | 1969 |
| An tAthair Cathaoir O Braonain | O hUrmoltaigh, Seán | Article in Journal | | 1989 |
| An tAthair Éamann Conchúr Mac an Bháird (1889-1917) | Mac Labhraí, Seán | Article in Journal | | 2017 |
| An tAthair Eoghan Ó Gramhnaigh | Ní Chonmhidhe, Mairéad | Article in Journal | | 1963 |
| An tAthair Eoghan Ó Gramhnaigh : fear nó finscéal | Ó Dúshláine, Tadhg | Article in Journal | | 1994 |
| An tAthair Liam Ó Fearghusa, 1881-1971 | Mac Ginnea, Seán | Article in Journal | | 1980 |
| An tAthair Lorcán Ó Muireadhaigh agus an Cúigeachas | Mac Giolla Chomhaill, Anraí | Article in Journal | | 1984 |
| An tAthair Mánus Mac Suibhne, sagart Ó Mhaigh Eo in Éirí amach 1798 | Mulloy, SheilaÓ Móráin, Pádraig | Monograph or Collective Volume | Westport Historical Society | 1999 |
| An tAthair Micheál Ó hIcí, agus Maigh Nuad | Ó Fiannachta, Pádraig | Article in Book | | 1986 |
| An tAthair Micheál P. Ó hIcí | De Róiste, Máire | Article in Book | | 1986 |
| An tAthair Seán Ó Murchú | Ó Dubhghaill, Séamus | Article in Journal | | 2003 |
| An tAthair Tadhg | Tyers, Pádraig | Monograph or Collective Volume | An Sagart | 2000 |
| An tEasbog Tomás Mhac Comhain (1831-1847) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1946 |
| An tSnaím is deireannaí mhaireas ón sean-aimsir idir Éire agus and Frainc, an amlaidh a scaoilfear í? | De Brún, Pádraig | Article in Journal | | 1954 |
| An underground gentry? Catholic middlemen in eighteenth-century Ireland | Whelan, Kevin | Article in Journal | | 1995 |
| An underground gentry? Catholic middlemen in eighteenth-century Ireland | Whelan, Kevin | Article in Book | | 1998 |
| An undertaking worthy only of fanatics: Catholic opinion on temperance and prohibition in New Zealand, c.1870-1910 | Ryan, Greg | Article in Journal | | 2010 |
| An unfortunate man : James Coigly, 1761-98 | Keogh, Dáire | Article in Journal | | 1998 |
| An unholy dispute. The controversy surrounding the appointment of Oliver Kelly to the See of Tuam 1809-1814 | Waldron, Liam | Article in Journal | | 2005 |
| An unnoticed pamphlet by Charles O'Conor at Belanagare : A vindication of the political principles of Roman Catholics (1761) | Woods, C. J. (Christopher John) | Article in Journal | | 1992 |
| An unpublished eighteenth century Franco-Irish manuscript | Hayes, Richard Francis | Article in Journal | | 1939 |
| An unpublished letter of St Oliver Plunkett | | Article in Journal | | 1975 |
| An untraced Irish work on catechetics | Millett, Benignus | Article in Journal | | 1991 |
| An unusual church register occurrence | Murphy, Michael | Article in Journal | | 2012 |
| An urban community and the Penal Laws : Limerick 1690-1830 | O'Flaherty, Eamon | Article in Book | | 2011 |
| Anacarty/Donohill history | Anonymous | Monograph or Collective Volume | Anacarty/Donohill Cultural and Historical Society | 1997 |
| Analecta sacra, nova, et mira - De rebus catholicorum in Hibernia ... gestis | [Roth, David, R.C. Bishop of Ossory] | Monograph or Collective Volume | | 1616 |
| Anatomy of a gifted Belfast surgeon Sir Peter Reilly O'Connell 1860-1927 | Magee, Jack | Article in Journal | | 2005 |
| Ancestral voices : religion and nationalism in Ireland | O'Brien, Conor Cruise, 1917-2008 | Monograph or Collective Volume | Poolbeg | 1994 |
| And the stone was made flesh - a bicentenary meditation in Maynooth | McDonagh, Enda | Article in Journal | | 1995 |
| Andreas Steinhuber's 'Votum' for the Holy Office, Rome, concerning the Irish Boycotting and the Plan of Campaign (with translation) | Belletti, Alberto | Article in Journal | | 2021 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 | Campbell, P. J. | Article in Journal | | 1977 |
| Andrew Campbell, bishop of Kilmore, 1753-1769 : student days in Spain | Walsh, Micheline | Article in Journal | | 1977 |
| Anglo-Irish attitudes : changing perceptions of national identity among the Protestant ascendancy in Ireland c.1690-1750 | Hayton, D. W. (David William) | Article in Journal | | 1987 |
| Anglo-Irish relations and Northern Ireland : historical perspectives | Foster, R. F. (Robert Fitzroy) (Roy), 1949- | Article in Book | | 1993 |
| Ann Morrison - from Downpatrick to Australia | Lennon, Gerard | Article in Journal | | 1991 |
| Another Irish nation : some historiographical variations as found in late nineteenth-century and early twentieth-century schools | Fischer, Karin | Article in Journal | | 2004 |
| Another look at Lord John Russell and the papal aggression, 1850 | Paz, D. G. | Article in Journal | | 1982 |
| Anthony Blake, archbishop of Armagh, 1758-87 | Whelan, Patrick | Article in Journal | | 1970 |
| Anthony Bruodins Propugnaculum Catholicae Veritatis : Ein Beispiel für den Umgang mit nationaler und kultureller Identität im 17. Jahrhundert | Ross, Bianca | Article in Book | | 1993 |
| Anthony Butler : soldier-bishop | Blackall, Henry, Sir | Article in Journal | | 1969 |
| Anthony Fahy of Loughrea : Irish missionary in Argentina | Fahy, Michael | Article in Journal | | 2005 |
| Anthony Gernon, O.F.M. (c.1610-1680) and the Irish remonstrance | Faulkner, Anselm | Article in Journal | | 1971 |
| Anthony M. Keiley (1932-1965), Virginia's Catholic population | O'Grady, Joseph P. | Article in Journal | | 1969 |
| Anthony Mageoghegan, bishop of Clonmacnois | Walsh, Paul, Revd, 1885-1941 | Article in Journal | | 1940 |
| Anti-catholic prejudice in early New England : the Daley-Halligan murder trial | Camposeo, James M | Article in Journal | | 1978 |
| Anti-Catholic thought in Victorian Canada | Miller, J. R. | Article in Journal | | 1985 |
| Anti-Catholicism | Wolffe, John | Article in Book | Oxford University Press | 2023 |
| Anti-Catholicism and Irish disturbances : public order in mid-Victorian Wolverhampton | Swift, R. | Article in Journal | | 1984 |
| Anti-Catholicism and Orange Loyalism in Nineteenth-Century Britain | Hughes, KyleMacRaild, Donald | Article in Book | | 2014 |
| Anti-Catholicism and Protestant Relations with Catholics | Haydon, Colin | Article in Book | Oxford University Press | 2023 |
| Anti-Catholicism in Britain and Ireland, 1600-2000 : practices, representations and ideas | | Monograph or Collective Volume | Palgrave Macmillan | 2020 |
| Anti-Catholicism in Northern Ireland, 1600-1998 : the mote and the beam | Brewer, John D.,Higgins, Gareth I. | Monograph or Collective Volume | Macmillan | 1998 |
| Anti-Catholicism in Northern Ireland, 1600-1998 : The Mote and the Beam | Brewer, John D.Higgins, Gareth I. | Monograph or Collective Volume | Macmillan Press | 1998 |
| Anti-Catholicism, conservatism, and conspiracy : Sir Richard Musgrave's Memoirs of the Different Rebellions in Ireland | Smyth, Jim | Article in Journal | | 1998 |
| Anti-communism in mid-twentieth century Ireland | Delaney, Enda | Article in Journal | | 2011 |
| Anti-Irish intrigues at the Vatican | Woods, C. J. (Christopher John) | Article in Journal | | 1969 |
| Anti-Irish nativism in the mid-nineteenth century | Hirota, Hidetaka | Article in Book | NA | 2024 |
| Anti-Irish violence in Victorian England : some perspectives | Swift, Roger | Article in Journal | | 1994 |
| Anti-Popery | Morton, Adam | Article in Book | Oxford University Press | 2023 |
| Anti-tithe meeting at the "Great Heath" 1838 | Hyland, Jackie | Article in Journal | | 2004 |
| Antipopery and ecclesiastical policy in early seventeenth-century Ireland | Asch, Ronald G. | Article in Journal | | 1992 |
| Antiquarian library catalogued | Dunlop, Eull | Article in Journal | | 1993 |
| Antithesis : how to create a nation | Barber, Sarah | Article in Book | | 2004 |
| Aodh Mac Aingil agus an scoil nua-Ghaedhilge i Lobháin | Ó Cléirigh, Tomás | Monograph or Collective Volume | Foillseacháin Rialtais | 1936 |
| Aodh Mac Aingil. Downpatrick's most illustrious son? | Napier, James | Article in Journal | | 1999 |
| Apocalyptic Ireland : 1580-1641 | Ford, Alan | Article in Journal | | 2013 |
| Apologetics of Harmony : Mathew Carey and the Rhetoric of Religious Liberty | Abruzzo, Margaret | Article in Journal | | 2010 |
| Apostolic letter of Pope Benedict XV to Cardinal Logue | Benedict XV, Pope | Article in Journal | | 1942 |
| Árais ársa agus agallaimh fhileata : Cúrsaí creidimh is polaitíochta in Ultaibh san 18ú haois. | Watson, Seosamh | Article in Book | | 2016 |
| Archbishop Butler's visitation book | | Article in Journal | | 1976 |
| Archbishop Carpenter and the Catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop Carpenter's epistolae 1770-80 | | Article in Journal | | 1956 |
| Archbishop Corrigan and the coming of the Carmelites to New York | Isacsson, Alfred | Article in Journal | | 1988 |
| Archbishop Crolly and the development of Catholicism in Ulster 1812-49 | Macaulay, Ambrose | Monograph or Collective Volume | St Mary's College | 1990 |
| Archbishop Crolly and the development of Catholicism in Ulster, 1812-49 | Macaulay, Ambrose | Article in Journal | | 1993 |
| Archbishop Daniel Mannix | Griffin, James | Article in Journal | | 1990 |
| Archbishop Daniel Mannix of Melbourne, 1864-1963 | Kiernan, Colm | Article in Journal | | 1984 |
| Archbishop Edmund O'Reilly's report on the state of the church in Ireland, 1662 | Millett, Benignus | Article in Journal | | 1959 |
| Archbishop Fleming, patriot and scholar | Barrett, Fergus | Article in Journal | | 1941 |
| Archbishop Healy | McGreevy, Sean | Article in Journal | | 1946 |
| Archbishop Hugh MacMahon | Flynn, L. J. | Article in Journal | | 1973 |
| Archbishop Hughes and the question of Ireland, 1829-1862 | Connor, Charles P. | Article in Journal | | 1984 |
| Archbishop Hughes and the question of Ireland, 1829-1862 | O'Connor, Charles P. | Article in Journal | | 1989 |
| Archbishop James Butler II : catechist to generations at home and abroad | Wallace, Patrick, [Rev.] | Article in Book | | 1989 |
| Archbishop James Duhig : Limerick 1871 - Brisbane 1965 | Boland, T. P. | Article in Journal | | 1988 |
| Archbishop John Baptist Purcell | Forde, R. | Article in Journal | | 1988 |
| Archbishop John Brenan (1625-1693) : his life and work | Breathnach, Catherine | Article in Journal | | 1993 |
| Archbishop John Carpenter and the catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop John Hughes : 1838-1864 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Archbishop John Hughes and the New York schools controversey of 1840-43 | Meenagh, Martin L. | Article in Journal | | 2004 |
| Archbishop John MacHale in Irish politics, 1830-50 | Clancy, Deirdre | Article in Journal | | 1958 |
| Archbishop John Thomas Troy (1739-1823) | Purcell, Mary | Article in Journal | | 1978 |
| Archbishop John Thomas Troy (1739-1823) | Keogh, Dáire | Article in Journal | | 1995 |
| Archbishop John Thomas Troy and the catholic church in Ireland, 1787-1817 | McNally, Vincent Joseph Connor | Thesis | | 1977 |
| Archbishop Leahy and faction fighting | O'Dwyer, Christopher | Article in Journal | | 1989 |
| Archbishop Leahy of Cashel (1806-75) | O'Dwyer, Christopher, Rev. | Thesis | | 1971 |
| Archbishop Lynch and 'New Ireland' : and unfulfilled dream for Canada's Northwest | Stortz, Gerald J. | Article in Journal | | 1982 |
| Archbishop Lynch's 'The evils of wholesale and improvident emigration from Ireland', (1864) | Lynch, John Joseph | Article in Journal | | 1983 |
| Archbishop Magauran and his return to Ireland, October 1592 | Walsh, Micheline Kerney | Article in Journal | | 1989 |
| Archbishop Malachy O'Quaelly, vicar apostolic of Killaloe, 1620-30; archbishop of Tuam, 1630-45 | Gleeson, Dermot F. | Article in Journal | | 1948 |
| Archbishop McGettigan, the Catholic bishops of Ireland and the Irish land bill 1881 | Bradley, John, Rev. | Article in Journal | | 1998 |
| Archbishop Murray of Dublin and the episcopal clash on the inter-denominational school scripture lessons controversy, 1835-1841 | Griffin, Seán | Article in Journal | | 1995 |
| Archbishop Murray, 1768-1852 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1952 |
| Archbishop Oliver Plunkett : Ireland's first canonized martyr | Curtayne, Alice | Article in Journal | | 1976 |
| Archbishop Philip Phillips (1785-87) | Claffey, Tony | Article in Journal | | 2016 |
| Archbishop Richard Creagh of Armagh, 1525-1586 : an Irish prisoner of conscience of the Tudor era | Lennon, Colm | Monograph or Collective Volume | Four Courts | 2000 |
| Archbishop Simonds and the Myshall connection | Byrne, Edward | Article in Journal | | 1993 |
| Archbishop Troy (1739-1823) and revolution | Peel, Edmund J., Rev. | Thesis | | 1956 |
| Archbishop Troy, the Catholic church and Irish radicalism, 1791-1793 | Keogh, Dáire | Article in Book | | 1993 |
| Archbishop Walsh | Leslie, John Randolph (Shane), 1885–1971 | Article in Book | | 1960 |
| Archbishop Walsh and St Mary's University College, 1893-1908 | O'Driscoll, Finbarr | Article in Journal | | 1985 |
| Archbishop Walsh and the 1913 Lock-out | Morrissey, Thomas J. | Article in Journal | | 2013 |
| Archbishop Walsh and the Commission on Manual and Practical Instruction | O'Donovan, Patrick F. | Article in Journal | | 1986 |
| Archbishop William Hayden (1868-1936) | Cassin, Maeve | Article in Journal | | 1994 |
| Archbishops Edmund MacGauran and Malachy O'Queely : some circumstances of their deaths | Connellan, M. J. | Article in Journal | | 1948 |
| Archdeacon Luke Rochford and his circle | Brady, John, d.1963 | Article in Journal | | 1961 |
| Archipelagic identities in Europe : Irish nuns in English convents | Coolahan, Marie-Louise | Article in Book | | 2013 |
| Architecture | Devlin, Eoin | Article in Book | Oxford University Press | 2023 |
| Architecture and Buildings: Building the Post-Emancipation Church | Jordan, Kate | Article in Book | Oxford University Press | 2023 |
| Archival odyssey, 1958-1995 | Larkin, Emmet | Article in Journal | | 1997 |
| Archives of the archdiocese of Boston | Rahill, Peter J. | Article in Journal | | 1959 |
| Archives of the Catholic Church in Ireland | Sheehy, David C. | Article in Book | | 1991 |
| Archives of the Franciscan Missionaries of the Divine Motherhood | Batchelor, Victoria, Sister | Article in Journal | | 2004 |
| Archives of the Irish Augustinians, Rome : a summary report | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1955 |
| Are we there yet? Ulster migrants in Connacht and Co. Clare | MacMahon, Michael | Article in Journal | | 2010 |
| Arguments for an integrated school system | Spencer, A. E. W. | Article in Book | | 1987 |
| Arklow Catholic Tennis Club | Anonymous | Article in Journal | | 1996 |
| Arms of Archbishop Carpenter | Slevin, Gerard | Article in Journal | | 1955 |
| Arrangements for the integration of Irish immigrants in England and Wales | Spencer, A. E. W. | Monograph or Collective Volume | Irish Manuscripts Commission | 2012 |
| Arrival, assertion and acclimatisation : or Context and contrasts : a preliminary checklist of works on the Irish Catholic experience in the North West of England | Aspinwall, Bernard | Monograph or Collective Volume | North West Catholic History Society | 1996 |
| Arthur Cox, 1891-1965 | McCague, Eugene | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| Article 44 reconsidered | Meehan, Niall | Article in Journal | | 2019 |
| Article 44.1 and the 'special position' of the Catholic Church in the Irish Constitution, 1937-1972 | Ní Leathlobhair, Niamh ; Coffey, Donal K. | Article in Book | | 2021 |
| Artisans, sectarianism and politics in Dublin, 1829-48 | Hill, Jacqueline R. | Article in Journal | | 1981 |
| Arts and crafts and revivalism in Catholic Church decoration : a brief duration | Wilson, Ann | Article in Journal | | 2013 |
| As one sent : Peter Kenney SJ, 1779-1841 : his mission in Ireland and North America | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 1996 |
| Ascendancy to oblivion : the story of the Anglo-Irish | McConville, M. | Monograph or Collective Volume | Quartet | 1986 |
| asking for trouble : the story of an escapade with disproportionate consequences | Craig, Patricia | Monograph or Collective Volume | Blackstaff Press | 2007 |
| Aspects of education in Ireland, 1695-1795 | Quane, Michael | Article in Journal | | 1968 |
| Aspects of Irishness | Walsh, Richard | Article in Book | | 1977 |
| Aspects of Rice family history | Feheney, J. M. | Article in Book | | 1994 |
| Aspects of the "religious" question in Ireland | Brooks, Sydney | Article in Journal | | 1912 |
| Aspects of the continental education of Irish students in the reign of Elizabeth I | Hammerstein, Helga | Article in Book | | 1971 |
| At Aodh Ó Néill's right hand : Archbishop Flaithrí Ó Maolchonaire and the Red Hand of Ulster | Hazard, Benjamin | Article in Book | | 2013 |
| At school on the Bullawn : 150 years of the C.B.S. in New Ross | | Monograph or Collective Volume | New Ross C.B.S. Secondary School | 2000 |
| At the coalface : recollections of a city and country priest, 1950-2000 | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Columba | 2000 |
| At the edge of the abyss : poems by Brian Mac Giolla Phádraig (c.1580-c.1652) | Moylan, Séamus | Article in Journal | | 1993 |
| Athenry church 1853 | King, Tony | Article in Journal | | 1997 |
| Athlone, 1685; Limerick, 1710 : religious riots or charivaris? | Barnard, T. C. (Toby Christopher) | Article in Journal | | 1993 |
| Attitudes to the rosary and its performance in Donegal in the nineteenth and twentieth centuries | Lysaght, Patricia | Article in Journal | | 1998 |
| Aubrey Gwynn : the Jesuit | O'Donoghue, Fergus | Article in Journal | | 1992 |
| Aubrey Gwynn S.J. (1892-1983) | Hurley, MichaelKelly, Fiona | Article in Journal | | 1993 |
| Augustine Birrell and Archbishop William Walsh's influence on the founding of the National University | O'Flynn, Gráinne | Article in Journal | | 1976 |
| Augustine Gibbon de Burgo : a study in early Irish reaction to Luther | Hennig, John | Article in Journal | | 1947 |
| Augustinian martyrs and missionaries 1649-1659 | | Article in Journal | | 1994 |
| Augustinus Gibbon de Burgo, OESA, und die Wiedererrichtung des theologischen Studiums der Augustinereremiten an der Universität Erfurt | Kleineidam, Erich | Article in Journal | | 1978 |
| Augustus Welby Northmore Pugin (1812-52) : a biographical portrait | Meldon, Jeanne | Article in Book | | 2012 |
| Austin Clarke and the consolations of Irish Catholicism | Farrell, Tyler | Article in Journal | | 2005 |
| Australia | McGovern, J. J.O'Farrell, Patrick James | Monograph or Collective Volume | Gill | 1971 |
| Australia : the influence of the Irish on the history of the church in Australia | Cosgrave, A. P. | Article in Journal | | 1947 |
| Australia remembers Rome and Ireland | Hunt, T. | Article in Book | | 1956 |
| Authority and freedom : John Henry Newman and the formation of youth | McClelland, Vincent Alan | Article in Book | | 1996 |
| Baileborough National District Model School, County Cavan | Franks, Lyn | Article in Journal | | 2018 |
| Ballinasloe, 1826 : Catholic emancipation, political tourism and the French liberal agenda | Conroy, Jane | Article in Journal | | 2002 |
| Ballindrimley in the 1790s | Connolly, Padraig | Article in Journal | | 1994 |
| Ballybeg priory. Parts 1-2 | Shine, Michael | Article in Journal | | 1994 |
| Ballygunner Temple | Grogan, Patrick | Article in Journal | | 2008 |
| Ballyhaunis Friary : [St Mary's Abbey founded c. 1400] | O'Connor, John | Monograph or Collective Volume | Greensprint | 1996 |
| Ballyheigue : our Christian heritage | | Monograph or Collective Volume | | 2012 |
| Ballyheigue parish today | Leane, Tom, Rev. | Article in Book | | 2012 |
| Ballymonie old church (1826-1925) | Hasson, Seamus | Article in Journal | | 2000 |
| Ballyshonin and Loughane mass rocks | Gabriel, Brian | Article in Journal | | 2011 |
| Baltinglass convent | Morrissey, Therese | Article in Journal | | 1983 |
| Banfhondúirí Atha Cliath | De Paor, Máire | Monograph or Collective Volume | Preas Cholm Cille | 1988 |
| Bannow school (1821-1826) | Doyle, P. A., OSA | Article in Journal | | 1920 |
| Baptisms, marriages and Lithuanians; or, "Ghetto? What Ghetto?" : some reflections on modern Catholic historical assumptions | Aspinwall, Bernard | Article in Journal | | 2000 |
| Barr an Uisce! : St Patrick's Church, Barranisky, Co. Wicklow | McCarthy, Patrick | Monograph or Collective Volume | The author | 2003 |
| Barry's Bossuet in Elysium : Catholicism and counter-revolution in the 1790s | Guernsey, Daniel R. | Article in Book | | 2010 |
| Battling satan in the city : Charles Henry Parkhurst and municipal redemption in gilded age New York | Todd, Jesse T. | Article in Journal | | 1993 |
| Bayside parish : silver jubilee, 1971-1996 | Anonymous | Monograph or Collective Volume | Bayside Parish | 1996 |
| Béal eiriciúil as Inis eoghain : John Toland (1670-1722) | Harrison, Alan, 1943- | Monograph or Collective Volume | Coiscéim | 1994 |
| Beatha Dhomhnaill Uí Chonaill | Ó Súilleabháin, Domnall | Monograph or Collective Volume | Foillseacháin Rialtais | 1936 |
| Beatha Sheáin Mistéil | Ó Domhnaill, Niall | Monograph or Collective Volume | Oifig Díolta Foillseacáin Rialtais | 1937 |
| Before 1840 | Q., E. J. | Article in Book | | 1940 |
| Before the devotional revolution | Larkin, Emmet | Article in Book | | 2005 |
| Before the night grows late | O Riordan, John J | Monograph or Collective Volume | Columba Press | 2009 |
| Before the Night Grows Late | Ó Ríordáin, John J. CSsr | Monograph or Collective Volume | Columba Press | 2009 |
| Before the revolution : nationalism and social change and Ireland's Catholic elite, 1879-1922 | Pašeta, Senia | Monograph or Collective Volume | Cork University Press | 1999 |
| Before the revolution : nationalism, social change and Ireland's Catholic elite, 1879-1922 | Pašeta, Senia | Monograph or Collective Volume | Cork University Press | 1999 |
| Begley's diocese of Limerick | Irwin, Liam | Article in Journal | | 1994 |
| Beidh siocháin grámhar againn le chéile | Ó Concubhair, Pádraig | Article in Journal | | 2000 |
| Being Catholic in Ireland | Inglis, Tom | Article in Book | Oxford University Press | 2024 |
| Being Scottish in an Irish Catholic church in a Scottish Presbyterian settlement : Otago's Scottish Catholics, 1848–1895 | Brosnahan, Seán | Article in Journal | | 2012 |
| Being Scottish in an Irish Catholic Church in a Scottish Presbyterian settlement : Otago's Scottish Catholics, 1848–1895 | Brosnahan, Seán | Article in Journal | | 2012 |
| Belfast from Loyalty to Rebellion | Goldring, Maurice | Monograph or Collective Volume | Lawrence and Wishart | 1991 |
| Belgium | De Wiel, Jérome aan | Article in Book | | 2013 |
| Beloved Brethern. Bishop Morrisroe's Lenten Pastoral 1917 | Farry, Michael | Article in Journal | | 2018 |
| Beneath cathedral towers : celebrating 70 years of the Cathedral of Christ the King, Mullingar, and its parishioners | | Monograph or Collective Volume | Mullingar Cathedral Book Committee | 2009 |
| Bernard Brady, O. P., parish priest of Derryvullen, 1770-1800 | Fenning, Hugh | Article in Journal | | 1967 |
| Bernard Sheridan - a man of steel | Mulligan, William, 1877-1968 | Article in Journal | | 2006 |
| Betrayal of trust : the Father Brendan Smyth affair and the Catholic church | Moore, Chris | Monograph or Collective Volume | Marino Press | 1995 |
| Between conflict and coexistence : The Catholic community in Ireland as a "visible underground Church" in the late sixteenth and early seventeenth centuries | Lotz-Heumann, Ute | Article in Book | | 2009 |
| Between four kingdoms : international Catholicism and Colonel William Semple | Redworth, Glyn | Article in Book | | 2002 |
| Between isolation and integration : religion, politics, and the Catholic Irish in Preston, C.1829-1868 | Hepworth, Jack | Article in Journal | | 2020 |
| Beyond ambivalence : Variations of Catholic anti-semitism in turn-of-the-century Baltimore | Rahden, Till van | Article in Journal | | 1994 |
| Beyond the pale? Mary Carpenter and the Irish poor in mid-Victorian Bristol | Dresser, Mary | Article in Journal | | 2006 |
| Beyond the red gauntlet | Bill, AnneFoster, B. A.Verner, Nicola | Monograph or Collective Volume | AB publications | 2002 |
| Beyond the sectarian divide : the social bases and political consequences of nationalist and unionist party competition in Northern Ireland | Duffy, MaryEvans, Geoffrey | Article in Journal | | 1997 |
| Bibliography [2007 relating to Roman Catholicism] | Murphy, Martin | Article in Journal | | 2008 |
| Bibliotheca Catholica Neerlandica impressa, 1500-1727 | Anonymous | Monograph or Collective Volume | [s.n.] | 1954 |
| Bicentenary of St Joseph's Church, Tinryland, Co. Carlow | Byrne, Maureen | Article in Journal | | 2020 |
| Bickersteth, bishop of Ripon : the episcopate of a mid-Victorian evangelical | Hempton, David | Article in Journal | | 1981 |
| Big Biddy Higgins | O'Brien, Pat | Article in Journal | | 2002 |
| Bigotry and politics in Belfast from the Victorian era to the twentieth century | Boyd, Andrew, 1921- | Article in Book | | 1995 |
| Bigots or patriots? The political and religious allegiances of the Liverpool ships' carpenters, 1815-1851 | Neal, Frank | Article in Book | | 1992 |
| Biographical note : Father Bryan O'Cannan (1692-1743) | Ó Canann, Tomás | Article in Journal | | 2000 |
| Biomedical controversies in Catholic Ireland : a contemporary history of divisive social issues | O'Leary, Don | Monograph or Collective Volume | Eryn Press | 2020 |
| Birds, bugs, bogs,botany and biodiversity: some clergymen naturalists associated with Ireland | Baker, Richard A. | Article in Journal | | 2013 |
| Birmingham's Irish community and the Murphy Riots of 1867 | Davis, Patsy | Article in Journal | | 2006 |
| Birr, Convent of Mercy. Convent centenary | Anonymous | Article in Journal | | 1940 |
| Bishop Cartwright's death-bed | Beddard, Robert | Article in Journal | | 1984 |
| Bishop Caulfield's 'Relatio status' 1796 | | Article in Journal | | 1966 |
| Bishop Conor O'Devanney OFM c.1533-1612 | Silke, John J. | Article in Journal | | 1988 |
| Bishop Cornelius Egan's diocesan reports to Rome | O'Shea, Kieran | Article in Journal | | 1979 |
| Bishop Coyle's pious miscellany | Silke, John J. | Article in Journal | | 1994 |
| Bishop Daniel Cohalan of Cork on republican resistance and hunger strikes : a theological note | Corkery, Pádraig | Article in Journal | | 2002 |
| Bishop Daniel Delany and the Jesuits | Sweetman, Stephen | Article in Journal | | 2019 |
| Bishop Edward Thomas O'Dwyer and the course of Irish politics, 1870-1917 | O'Callaghan, Edward | Thesis | | 1976 |
| Bishop Edward Thomas O'Dwyer and the fall of Parnell | O'Callaghan, Edward P. | Article in Journal | | 1978 |
| Bishop Edward Thomas O'Dwyer of Limerick, 1842-1917 | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2003 |
| Bishop Foley and two crises - Home Rule and conscription | Power, Ann | Article in Journal | | 2006 |
| Bishop Francis Hutchinson : his Irish publications and his library | Wheeler, Gordon | Article in Book | | 1996 |
| Bishop Francis Moylan | O'Farrell, Josephine | Thesis | | 1974 |
| Bishop Hay and Patrick Wogan | Anderson, W. J. | Article in Journal | | 1967 |
| Bishop Hoare and politics | Mulryan, Maureen | Article in Journal | | 2007 |
| Bishop in the dock : the sedition trial of James Liston | Sweetman, Rory | Monograph or Collective Volume | Auckland University Press | 1997 |
| Bishop in the dock : the sedition trial of James Liston in New Zealand | Sweetman, Rory | Monograph or Collective Volume | Irish Academic Press | 2007 |
| Bishop Ireland's Connemara experiment | Shannon, James P. | Article in Journal | | 1957 |
| Bishop James Corbett : freeman of Limerick | Anonymous | Article in Journal | | 1988 |
| Bishop James Donnelly and the Catholic electorate. | Carville, Gary | Article in Journal | | 2012 |
| Bishop James Moynagh of Calabar | Cooke, Colman M. | Monograph or Collective Volume | Columba Press | 2014 |
| Bishop John Brenan, the intimate of Blessed Oliver | Power, P. | Article in Book | | 1937 |
| Bishop John Connolly : 1815-1825 | Fratini, Mary Elizabeth | Article in Book | | 1999 |
| Bishop John Dubois : 1825-1842 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Bishop John England | MacCarron, Patrick | Article in Journal | | 2013 |
| Bishop John England (1786-1842) and antebellum southern slavery | Regan, Joe | Article in Book | | 2015 |
| Bishop John England of Charleston : catholic spokesman and southern intellectual, 1820-1842 | Saunders, R. | Article in Journal | | 1993 |
| Bishop John Keys O'Doherty 1889-1907 | Canning, B. J. (Bernard J.) | Article in Journal | | 2006 |
| Bishop John MacEvilly and the Catholic church in Galway 1857-1902 | Bane, Liam | Article in Book | | 1996 |
| Bishop John O'Molony : a great prelate of the penal days | G., J. S. | Article in Journal | | 1937 |
| Bishop John O'Molony of Killaloe (1617-1702) | Halpin, Sean | Article in Journal | | 1989 |
| Bishop Keeffe of Kildare and Leighlin, A.D. 1702-87 | Brenan, Martin | Article in Journal | | 1937 |
| Bishop Kelly of Western Nigeria | O'Shea, Michael | Monograph or Collective Volume | Society of African Missions | 2006 |
| Bishop Michael Browne of Galway (1937-1976 and the regulation of public morality | Donnelly, James S., Jr | Article in Journal | | 2013 |
| Bishop Michael Browne of Galway and anti-communism, 1937-1976 | Madden, Gerard | Article in Journal | | 2014 |
| Bishop Moran : Irish politics and Catholicism in New Zealand | Laracy, Hugh M. | Article in Journal | | 1970 |
| Bishop Moylan's Relatio status, 1785 | | Article in Journal | | 1974 |
| Bishop Moylan's report of the diocese of Cork, 1802 | O'Farrell, Mary Pius | Article in Journal | | 2001 |
| Bishop Nicholas French and the Second Ormond Peace, 1648-9 | Corish, Patrick J. | Article in Journal | | 1948 |
| Bishop O'Brien's Vatican manuscript | Ó Dochartaigh, Caitríona | Article in Journal | | 2008 |
| Bishop of the land war : Dr Patrick Duggan, bishop of Clonfert, 1813-1896 | Anonymous | Monograph or Collective Volume | Veritas | 1987 |
| Bishop Patrick Foley and the Carlow by-election of 1908 | Power, Anne | Article in Journal | | 2005 |
| Bishop Patrick Lynch of Charleston and his visit to Roslea in 1864 | Corr, Seán | Article in Journal | | 2010 |
| Bishop Patrick O'Donnell and Rome | Silke, John J. | Article in Journal | | 2013 |
| Bishop Ricards and Dean Croghan : a contrasting tale of two Wexford missionaries in South Africa | Comerford, Patrick | Article in Journal | | 2001 |
| Bishop Richard Luke Concannen : 1747-1810 | Fratini, Mary ElizabethO'Hurley-Pitts, Michael | Article in Book | | 1999 |
| Bishop Thomas Lewis O'Beirne and his church-building programme in the diocese of Meath, 1798-1823 | Gallagher, Mary C. | Thesis | | 2009 |
| Bishop Thomas Nulty and the Irish land question. Part 1 : 1876-79 | Flynn, Gabriel | Article in Journal | | 1984 |
| Bishop Thomas Nulty and the Irish land question. Parts 2 and 3, 1879-1893 | Flynn, Gabriel | Article in Journal | | 1985 |
| Bishop Wadding's notebook | | Article in Journal | | 1970 |
| Bishop Walter Lynch (c.1593-1663) and the Black Madonna of Gyor | Ó hAnnracháin, Tadhg | Article in Book | | 2015 |
| Bishop William O'Higgins finally honoured | Editor | Article in Journal | | 2007 |
| Bishop Young's catechism | Tynan, Michael | Article in Journal | | 1984 |
| Bishops and abbots of Cloyne | Kelleher, Thomas | Article in Book | | 1994 |
| Bishops of Ferns | De Vál, Seamus S. | Article in Book | | 1999 |
| Bishops of Ireland 1870-1987 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | Donegal Democrat | 1987 |
| Bishops of Rathlury and Derry | Daly, Edward | Article in Journal | | 1980 |
| Black and Irish relations in 19th-century Boston : the interesting case of lawyer Robert Morris | Leonard, William | Article in Journal | | 2009 |
| Blackrock College, 1860-1960 | Farragher, J. | Article in Journal | | 1962 |
| Blessed Charles Meehan, O.F.M. 1645-79 | Meehan, Patrick F. | Monograph or Collective Volume | Leinster Express Newspapers | 1990 |
| Blessed Columba Marmion : a short biography | Tierney, Mark | Monograph or Collective Volume | Columba | 2000 |
| Blessed Oliver Plunket and the Popish Plot in Ireland | Walker, Breifne | Article in Journal | | 1968 |
| Blessed Oliver Plunkett | Curtis, Emmanuel | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| Blessed Oliver Plunkett : historical studies | Various authors | Monograph or Collective Volume | Gill | 1937 |
| Blessed Oliver Plunkett and his Irish Jesuit schools | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1941 |
| Blessed Oliver Plunkett and the tories | Mac Phóil, Donnchadha | Article in Journal | | 1959 |
| Blessed Oliver Plunkett's report on the diocese of Armagh, 1670 | | Article in Journal | | 1959 |
| Blood, dust and cucumbers : constructing the world of Hisperic Latinity | Harvey, Anthony | Article in Book | | 2015 |
| Blue plaque unveiling in honour of Archbishop John Joseph Hughes (1797-1864) | Martin, EamonMcGuinness, JosephMcKenna, Eileen | Article in Journal | | 2017 |
| Blurring the difference : the politics of identity in Northern Ireland | McDonald, Michael | Article in Book | | 1991 |
| Boetius Egan D.D. The last archbishop of the Penal Days. Archbishop of Tuam 1787-98 | Durkan, Liam | Article in Journal | | 2005 |
| Boetius MacEgan of Ross | Mooney, Canice | Monograph or Collective Volume | Four Masters | 1950 |
| Boetius McEgan bishop and martyr | Ó Riain, Pádraig | Article in Journal | | 1986 |
| Boinn an n Athair Meitiú agus a chuairteanna ar an Iúr agus ar an Pointe, 1841 | Céitinn, Séamus | Article in Journal | | 1998 |
| Bonaventura Ó hEoghusa's 'An Teagasg Críosdaidhe' 1611-1614 : a reassessment of its audience and use | Ryan, Salvador | Article in Journal | | 2004 |
| Booterstown Parish | Lyng, Paul | Article in Journal | | 2007 |
| Border ballads and sectarian affrays | McGimpsey, Christopher D. | Article in Journal | | 1982 |
| Borderline politics: Meath clerical involvement in the East Cavan by-election, June 1918 | Cogan, John F. | Article in Journal | | 2018 |
| Born in Ireland, buried in Canada | Radigan, Thomas B. | Article in Journal | | 1994 |
| Boston book censorship in the twenties | Boyer, Paul S. | Article in Journal | | 1963 |
| Boston Catholics : a history of the church and its people | O'Connor, Thomas H., 1922-2012 | Monograph or Collective Volume | Northeastern University Press | 1998 |
| Boston priests 1848-1910 : a study of social and intellectual change | Merwick, Donna | Monograph or Collective Volume | Harvard University Press | 1973 |
| Boston's Catholics and the Spanish civil war : 1936-1939 | Crosby, Donald F. | Article in Journal | | 1971 |
| Bourne, Norfolk and the Irish parliamentarians : Roman Catholics and the Education Bill of 1906 | McClelland, Vincent Alan | Article in Journal | | 1996 |
| Boycott! Louise Imogen Guiney and the American protective association | Fanning, Patricia J. | Article in Journal | | 1999 |
| Bram Stoker, the mystery of the sea : Ireland and the Spanish-Cuban-American war | Smith, Andrew | Article in Journal | | 1998 |
| Breaking the silence of child sexual abuse in the Irish-American Catholic Church | Ebest, Sally Barr | Article in Book | | 2024 |
| Breakthrough: The First Phase of Catholic Relief in Britain and Ireland, 1766-1789 | Kelly, James, 1959- | Article in Book | Oxford University Press | 2023 |
| Breccan Cathe, a forgotten Derry saint | Mac Giolla Easpaig, Dónall | Article in Journal | | 1996 |
| Brenan, Carew, and their ecclesiastical histories | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Brethren in Christ : Frederick Lucas and social Catholicism in Ireland | Maume, Patrick | Article in Book | | 2013 |
| Brett of Craanluskey and Ballygowan | Aughney, John P. P. | Article in Journal | | 1992 |
| Brevis et summaria relatio : an unpublished account of Dominican martyrs and exiles, 1656 | | Article in Journal | | 1993 |
| Brigid of Kildare: Stabilizing a Female Saint for Early Modern Catholic Devotion | McCafferty, John | Article in Journal | | 2020 |
| Bringing it all back home : Mary Butler (1641-1723), Benedictine abbess of Ypres | Kelly, James E. | Article in Book | | 2015 |
| Britan and Ireland | Ryrie, Alec | Article in Book | | 2005 |
| British and Irish Catholics in the Era of the French Revolution, 1789-1800 | Elliott, Marianne | Article in Book | Oxford University Press | 2023 |
| British and Irish experiences and impressions of central Europe, c.1560-1688 | Worthington, David | Monograph or Collective Volume | Ashgate | 2012 |
| British and Irish Novels and the Catholic Imagination | Johnson, Bonnie Lander : Mezaros, Julia | Article in Book | Oxford University Press | 2023 |
| British Catholics and the South African War, 1899-1900 | Davies, John | Article in Book | | 2003 |
| Britishness and otherness : an argument | Colley, Linda | Article in Book | | 1993 |
| Britishness, Irishness and class : Catholic identities in Anglo-Australia, 1880-1916 | McCarthy, Scott Denis | Article in Journal | | 2025 |
| Brother Paul James O'Connor (1796-1878) | Ruane, Kevin | Article in Journal | | 1992 |
| Brother Paul Townsend : exemplar of the Presentation tradition | Feheney, J. M. | Article in Book | | 1996 |
| Brother Potamian, educator and scientist | Battersby, W. J. | Monograph or Collective Volume | | 1953 |
| Building new lives, maintaining old identities: Irish Associations in Michigan's Copper Country, 1860-1900 | Mulligan, William H., Jr | Article in Journal | | 2015 |
| Building St. Patrick's Cathedral | McNierney, Patrick J. | Article in Journal | | 2004 |
| Bunclody old cemetery : church of St Mary Magdalene 1826-1970 | Anonymous | Monograph or Collective Volume | [s.n.] | 1989 |
| Bureau of Military History : testament of Michael Curran | Curran, Michael | Article in Book | | 2007 |
| Burgatia (land of the burgesses or freemen of Ross) | O'Callaghan, Fachtna | Article in Journal | | 2007 |
| Burke and the Aisling : 'Homage of a Nation' | O'Donnell, Katherine, 1966- | Article in Journal | | 2007 |
| Burke's Irish history - a hypothesis | Weston, J. C. | Article in Journal | | 1962 |
| Bushypark : Our people, our place. A parish history | Kelly, Christy | Monograph or Collective Volume | Bushypark Pastoral Council | 2016 |
| Butler and the churches | Tobin, Robert | Article in Book | | 2003 |
| By pen and pulpit : the life and times of the author Canon Sheehan | Barry, Michael | Monograph or Collective Volume | Saturn Books | 1990 |
| By the narrow gate : a bicentenary history : Patrician bicentenary, 1808-2008 | Patrician Brothers. General Secretariat. | Monograph or Collective Volume | Patrician General Secretariat | 2008 |
| Byways. A look at lesser used sources. (Roman Catholic marriage records) | Evans, Mihail D. | Article in Journal | | 1996 |
| Caherciveen's musical priest | McAuliffe, Nicholas | Article in Journal | | 1991 |
| Cáipéisí Doimniceánacha ón 17ú céad | Mac Niocaill, Gearóid | Article in Journal | | 1958 |
| Calendar customs and festival practices in Ireland | Danaher, Kevin, 1913-2002 | Article in Book | | 1977 |
| Calendar of Bray papers | Meagher, Claude | Article in Journal | | 1970 |
| Calendar of documents relating to St Anthony's College, Louvain, 1782-5, in Brussels, general archives of the realm, Privy Council, 713 A | Wijffels, Alain A. | Article in Journal | | 1982 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland | Anonymous | Monograph or Collective Volume | HMSO | 1955 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.18 : Pius III and Julius II. Vatican Registers (1503-1513); Lateran Registers (1503-1508) | | Monograph or Collective Volume | Stationery Office for Irish Manuscripts Commission | 1989 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.19 : 1503-1513. Lateran registers part 2 | | Monograph or Collective Volume | Irish Manuscripts Commission | 1998 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : vol. 14 : papal letters, 1484-1492 | | Monograph or Collective Volume | Stationery Office | 1960 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland. Vol. 13, parts 1-2 | | Monograph or Collective Volume | [s.n.] | 1955 |
| Calendar of entries in the Papal registers relating to Great Britain and Ireland. Vol. XVIII : Pius III and Julius II : Vatican registers (1503-1513); Lateran registers (1503-1508) | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1989 |
| Calendar of Irish material in ... Fondo di Vienna in Propaganda archives | | Article in Journal | | 1990 |
| Calendar of Irish material in the files of Jean Fromont, notary at Paris, May 1701-14 Jan 1730, in the Archives Nationales, Paris : part 1, 1701-1715 | Swords, Liam | Article in Journal | | 1993 |
| Calendar of Irish material in the files of Jean Fromont, notary at Paris, May 1701-24 Jan. 1730, in the Archives Nationales, Paris. Pt. 2 : 1716-30 | Swords, Liam | Article in Journal | | 1994 |
| Calendar of Papal letters relating to Great Britain and Ireland, vol. XXI, 1513-1521, Leo X, Lateran registers, part 2 | NA | Monograph or Collective Volume | Irish Manuscripts Commission | 2024 |
| Calendar of state papers, relating to English affairs, preserved principally at Rome, in the Vatican archives and library. Elizabeth, [vols.] 1-2 : 1558-1578. 2 vols. | Rigg, James Macmullen, 1855-1926 | Monograph or Collective Volume | HMSO | 1916 |
| Calendar of the papers of Dr Bray, archbishop of Cashel and Emly (1792-1820) | Meagher, Claude | Article in Journal | | 1968 |
| Calendar of the papers of the Irish College, Paris, 1316-1800 | Swords, Liam | Thesis | | 1979 |
| Calendar of volume 13 of the "Fondo di Vienna" in propaganda archives : part 2, ff. 201-401 | Millett, Benignus | Article in Journal | | 1983 |
| Calendar of volume 13 of the "Fondo di Vienna" in propaganda archives : part 3, ff. 402-522 | Millett, Benignus | Article in Journal | | 1984 |
| Calendar of volume 14 of the 'Fondo de Vienna' in propaganda archives, part 1, ff 1-131 | Millett, Benignus | Article in Journal | | 1987 |
| Calendar of volume 14 of the Fondo di Vienna in Propaganda Archives : part 2, ff 132-283 | Millett, Benignus | Article in Journal | | 1988 |
| Calendar of volume 14 of the Fondo di Vienna in Propaganda Archives : part 3, ff. 284-395 | | Article in Journal | | 1990 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda archives : Part 1, ff 1-102 | Millett, Benignus | Article in Journal | | 1996 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda Archives : Part 3, ff 217-80 | Millett, Benignus | Article in Journal | | 1999 |
| Calendar of Volume 16 of the Fondo di Vienna in Propaganda archives : Part 4, ff. 281-371 | Millett, Benignus | Article in Journal | | 2001 |
| Calendar of volume 16 of the Fondo di Vienna in Propaganda archives, part 2, ff 103-216 | Millett, Benignus | Article in Journal | | 1998 |
| Calendar of volume 3 (1672-5) of the 'Scritture riferite nei congressi, Irlanda' in Propaganda Archives : 1 | Millett, Benignus | Article in Journal | | 1978 |
| Calendar of volume 3 (1672-5) of the 'Scritture riferite nei congressi, Irlanda' in propaganda archives : part 2, ff 201-518 | Millett, Benignus | Article in Journal | | 1979 |
| Calendar of volume, 2 (1669-71) of 'Scritture riferite nei congresi Irlanda' in propaganda archives : part 2 | Millett, Benignus | Article in Journal | | 1975 |
| Calendar of volume1 (1625-68) of the collection 'Scritture riferite nei congressi, Irlanda' in Propaganda Archives | Millett, Benignus | Article in Journal | | 1964 |
| Camán and crozier : the Catholic church and the GAA, 1884-1902 | Gillespie, Simon,Hegarty, Roddy, | Article in Book | | 2009 |
| Canada | Monahan, A. P. | Monograph or Collective Volume | Gill | 1971 |
| Canadian Catholics, Loyalty and the British Empire, 1763 - c.1901 | McGowan, Mark G. | Article in Book | | 2014 |
| Candle beams : Cloughjordan priests, religious and lay missionaries | | Monograph or Collective Volume | Cloughjordan Heritage Group | 2003 |
| Cannonballs and croziers : a history of Maynooth | Condrum, PatriciaDrennan, JohnNylan, DominicNí Bhrolcháin, Muireann | Monograph or Collective Volume | Maynooth Community Council | 1994 |
| Canon and martial law : William O'Brien, catholicism and Irish nationalism | Newsinger, John | Article in Journal | | 1981 |
| Canon Brosnan and Cnoc na dTobar, Cahersiveen | Bric, Maurice J. | Article in Journal | | 2023 |
| Canon Corrigan : achievement and challenge | Ó Ferghail, Fearghus | Article in Book | | 1997 |
| Canon Edward J. Whyte - a profile | Grace, Daniel | Article in Journal | | 1996 |
| Canon Frederick Donovan's Dunlavin, 1884-1896 : a west Wicklow village in the late nineteenth century | Lawlor, Chris, 1960- | Monograph or Collective Volume | Irish Academic Press | 2000 |
| Canon J.. McGarry, editor (of The Furrow) 1950-1977 | Drury, Ronan | Article in Journal | | 1977 |
| Canon J.G. McGarry, editor of 'The Furrow', 1950-1977. The man, the style and the issues | McDonagh, Enda | Article in Journal | | 1977 |
| Canon James Kearney O'Neill 1857-1922 Founder of The Knights of St. Columbanus | Rogers, Frank | Monograph or Collective Volume | Rogers - self-published | 2012 |
| Canon John Burton's biographical sketch of Canon Sheehan | Burton, John, Canon | Article in Journal | | 2015 |
| Canon John Burton's biographical sketch of Canon Sheehan | Burton, John, Canon | Article in Journal | | 2015 |
| Canon John O'Hanlon (1821-1905) : his early days in St Louis | Concannon, Helena | Article in Journal | | 1947 |
| Canon John O'Rourke : historian of the Great Famine | Comerford, R.V. (Richard Vincent) | Article in Book | | 1995 |
| Canon Justin McCarthy, P.P. of Mallow 1847-1852 : notes on his life and times | Kavanagh, Myra | Article in Journal | | 2012 |
| Canon Keller of Youghal | Larkin, Felix M. | Article in Book | | 2013 |
| Canon Power and Rian Bó Phádraig | Cashman, John | Article in Journal | | 1990 |
| Canon Sheehan | Forde, R. | Article in Journal | | 1980 |
| Canon Sheehan | Barry, John | Article in Journal | | 1946 |
| Canon Sheehan - unpublished manuscripts | Forde, R. | Article in Journal | | 1995 |
| Canon Sheehan : a turbulent priest | Clifford, Brendan | Monograph or Collective Volume | Aubane Historical Society | 1990 |
| Canon Sheehan : the gardener-philosopher of Doneraile | Buckley, Bobby | Article in Journal | | 2012 |
| Canon Sheehan of Doneraile | MacGowan, Kenneth | Monograph or Collective Volume | Catholic Truth Society | 1963 |
| Canon Sheehan of Doneraile, 1852-1913 : outlines for a literary biography | O'Brien, James | Monograph or Collective Volume | Smenos | 2013 |
| Canon Sheehan's dystopia : 'Godless science' and 'Survival of the fittest' | O'Leary, Don | Article in Book | | 2014 |
| Canon Sheehan's dystopia : 'Godless science' and 'Survival of the fittest' | O'Leary, Don | Article in Book | | 2014 |
| Canon Sheehan, from unpublished letters | Forde, Robert | Article in Journal | | 1986 |
| Canon Tom and the City of Taghmon | Scallan, Eithne | Article in Journal | | 2005 |
| Canon Ulick J. Bourke, 1829-87 | Concannon, Helena | Article in Journal | | 1950 |
| Canonical faculties on the Irish mission in the reign of Queen Elizabeth, 1558-1603 | Jones, F. M. | Article in Journal | | 1953 |
| Caoineadh Airt Uí Laoghaire. The contemporary political context | Cullen, L. M. (Louis Michael) | Article in Journal | | 1993 |
| Capital punishment and the New York Irish | Casey, Marion R. | Article in Journal | | 1998 |
| Captaen na bhFear mBán : Father Nicholas Sheehy in history/folklore | Ó Cadhla, Stiofán | Article in Journal | | 2002 |
| Cardinal Basil Hume and Abbot Byrne | Smith, Sean | Article in Journal | | 2004 |
| Cardinal Bourne and Ireland | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1940 |
| Cardinal Cullen : biographical materials | Curran, M. J. | Article in Journal | | 1955 |
| Cardinal Cullen and Archbishop MacHale | Corish, Patrick J. | Article in Journal | | 1959 |
| Cardinal Cullen and Irish nationality | Steele, Edward David | Article in Journal | | 1975 |
| Cardinal Cullen and the National Association of Ireland | Corish, Patrick J. | Article in Book | | 1987 |
| Cardinal Cullen and the system of national education in Ireland | Doyle, Joseph | Article in Book | | 2011 |
| Cardinal Cullen's other capital : Belfast and the 'devotional revolution' | Connolly, Sean J. | Article in Book | | 2011 |
| Cardinal Cullen, early Fenianism, and the MacManus funeral affair | Rafferty, Oliver P. | Article in Journal | | 1995 |
| Cardinal Cullen, early Fenianism, and the MacManus funeral affair | Rafferty, Oliver P. | Article in Journal | | 1995 |
| Cardinal Daly’s memories of Sweet Loughguile | Dunlop, Eull | Article in Journal | | 1996 |
| Cardinal John McColoskey : 1864-1885 | Fratini, Mary Elizabeth | Article in Book | | 1999 |
| Cardinal Manning : a biography | Gray, Robert | Monograph or Collective Volume | [s.n.] | 1985 |
| Cardinal Manning : his public life and influence, 1865-92 | McClelland, Vincent Alan | Monograph or Collective Volume | Oxford University Press | 1962 |
| Cardinal Manning and the temporal power | Norman, E. R. | Article in Book | | 1985 |
| Cardinal Moran and the A.L.P. : a study in the encounter between Moran and socialism, 1890-1907 | Ford, Patrick K. | Monograph or Collective Volume | Melbourne UP|Cambridge University Press | 1966 |
| Cardinal Newman and the Catholic University : a selection from Newman's Dublin writings | McCartney, DonalNewman, John Henry, cardinal, 1801-1890O'Loughlin, Thomas | Monograph or Collective Volume | University College Dublin | 1990 |
| Cardinal Patrick Francis Moran | Ellis, William | Article in Journal | | 1983 |
| Cardinal Patrick Francis Moran of Leighlinbridge, 1830-1911 | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Cardinal Patrick O'Donnell and Scotland | Canning, B. J. (Bernard J.) | Article in Journal | | 2001 |
| Cardinal Patrick O'Donnell, 1856-1927 | Ó Baoighill, Pádraig S. | Monograph or Collective Volume | Foilseacháin Chró na mBothán | 2008 |
| Cardinal Paul Cullen | Larkin, Emmet | Article in Book | | 1998 |
| Cardinal Paul Cullen and his world | | Monograph or Collective Volume | Four Courts | 2011 |
| Cardinal Pole's absolution of George Browne, Henry VIII's archbishop of Dublin | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1949 |
| Cardinal Samuel Stritch and his ancestors | MacMahon, Bryan | Article in Book | | 2012 |
| Cardinal Samuel Stritch of Chicago | MacMahon, Bryan, 1949- | Article in Journal | | 2013 |
| Cardinal William Conway, 1913-1977 | McGarry, J. G. | Article in Journal | | 1977 |
| Cardinal Wiseman and his associations with south Kilkenny | Dowling, Daniel | Article in Journal | | 1974 |
| Cardinal Wisemen (1802-1865) and his roots in Waterford and South Kilkenny | Walton, Julian C. | Article in Journal | | 2017 |
| Cardinal Wolsey, the native affinities, and the failure of reform in Henrician Ireland | Fitzsimons, Fiona | Article in Book | | 2004 |
| Care of the orphan and the aged by the Irish community of Québec city, 1847 and years following | O'Gallagher, Marianna | Article in Journal | | 1976 |
| Caring for Chicago's women and girls : the Sisiters of the Good Shepherd, 1859-1911 | Hoy, Suellen | Article in Journal | | 1997 |
| Caring for migrants : policy responses to Irish migration to England, 1940-1972 | Ewart, Henrietta | Thesis | | |
| Caring for the nation : a history of the Mater Misericordiae University Hospital | Nolan, M. Eugene, Sister | Monograph or Collective Volume | Gill & Macmillan | 2013 |
| Caritas: poverty and social action | McCabe, Ciarán | Article in Book | Oxford University Press | 2023 |
| Carleton and Lough Derg | Skeffington, Sean | Article in Book | | 2006 |
| Carleton's Ulster Catholics | Elliott, Marianne | Article in Book | | 2006 |
| Carleton, Catholicism and the comic novel | Krause, David | Article in Journal | | 1994 |
| Carlovians who served as chaplains in the defence forces 1922-1997 | Anonymous | Article in Journal | | 1997 |
| Carlow College 1793-1993 : the ordained students and teaching staff of St. Patrick's College, Carlow | McEvoy, John | Monograph or Collective Volume | St. Patrick's College | 1993 |
| Carlow College : two hundred years of education | McEvoy, John | Article in Journal | | 1992 |
| Carlow man - founder of four schools, from Cloneen, Nurney, Co. Carlow to America to eternity | Nevin, Martin | Article in Journal | | 2000 |
| Carnally (Cairn Eallaigh) - townland and mass rock | McShane, Michael | Article in Journal | | 1998 |
| Cashel & Emly heritage | Skehan, Walter G. | Monograph or Collective Volume | Abbey Books | 1993 |
| Cashel diocesan archives | Tierney, Mark | Article in Book | | 1989 |
| Castledockrell church 1842-1992 | Anonymous | Monograph or Collective Volume | The church | 1992 |
| Catalogue of Irish manuscripts in Mount Melleray Abbey, County Waterford | Ó Macháin, Pádraig | Monograph or Collective Volume | Dublin Inst. for Advanced Studies, School of Celtic Studies | 1991 |
| Catalogue of Irish material in fourteen volumes of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1967 |
| Catalogue of Irish material in vols 132-139 of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1969 |
| Catalogue of Irish material in vols. 140-3 of the Scritture originali riferite nelle congregazioni generali in Propaganda archives | | Article in Journal | | 1971 |
| Catalogue of Irish materials in vols 129-131 of the 'Scritture originali riferite nelle congregazioni generali' in Propaganda Archives | Millett, Benignus | Article in Journal | | 1968 |
| Catalogue of material of Irish interest in the collection Nunziatura di Fiandra, Vatican archives | Giblin, Cathaldus | Article in Journal | | 1972 |
| Catalogue of the papers of Dr Denis Conway (1722-96) in Limerick Diocesan Archives [with index] | Bracken, David | Article in Journal | | 2016 |
| Catalogue of the papers of Dr John Young, bishop of Limerick [1746-1813) held in the Limerick Diocesan Archives [with index] | Bracken, David | Article in Journal | | 2015 |
| Catalogue of volume 294 of the 'Scritture originali riferite nelle congregazioni generali' in propaganda archives | Millett, Benignus | Article in Journal | | 1965 |
| Catechist, linguist and Parisian churchman - the life of Rev Dr Andrew Donlevy LLD | Farry, Neal | Article in Journal | | 2015 |
| Cathedral of Christ the King, Mullingar : dedication souvenir | Anonymous | Monograph or Collective Volume | John P. Hayden | 1938 |
| Catherine McAuley (1778-1841) | Bergin, Moira | Article in Book | | 2012 |
| Catherine McAuley 1778-1978 : bi-centenary souvenir book | | Monograph or Collective Volume | Irish Messenger Publications | 1978 |
| Catherine McAuley : the first Sister of Mercy | Savage, R. B. | Monograph or Collective Volume | [s.n.] | 1955 |
| Catherine McAuley and the education of Irish Roman Catholic children in the mid-nineteenth century | Minns, Hilary | Article in Book | | 2000 |
| Catherine McAuley and the tradition of mercy | Sullivan, Mary C. | Monograph or Collective Volume | Four Courts | 1995 |
| Catherine McAuley venerable for mercy | Bolster, Angela | Monograph or Collective Volume | Dominican | 1990 |
| Catherine McAuley's theological and literary debt to Alonso Rodriguez : the 'spirit of the institute' parallels | Sullivan, Mary C. | Article in Journal | | 1990 |
| Catherine McAuley's theological and literary debt to Alonzo Rodriguez : the 'spirit of the institute' parallels | Sullivan, Mary C. | Article in Journal | | 1990 |
| Catholic 'Hessians'. 'At Tubberneering and Ballyellis, Full many a Hessian lay in his gore' | Dunne-Lynch, Nicholas | Article in Journal | | 2019 |
| Catholic action and the development of the Irish welfare state in the 1930s and 1940s | Kelly, Adrian | Article in Journal | | 1999 |
| Catholic Action as an organised campaign in Ireland, 1921-1947 | Curtis, Maurice | Thesis | | 2000 |
| Catholic ancestors in the British Isles and Catholic German influences | Hodson Pressinger, Selwyn | Article in Journal | | 2007 |
| Catholic ancestors of the Pressinger family. Part 2 | Hodson Pressinger, Selwyn | Article in Journal | | 2009 |
| Catholic and Protestant Dublin weavers before the Spanish Inquisition, 1745-54 | O'Connor, Thomas | Article in Book | | 2016 |
| Catholic and Protestant relations in Derry in the episcopacy of Charles O'Donnell 1798-1823 | Rafferty, Oliver P. | Article in Book | | 1999 |
| Catholic archives of the United States | O'Connor, Thomas F. | Article in Journal | | 1946 |
| Catholic Association papers in the Dublin Diocesan archives | O'Higgins, Fergus | Article in Journal | | 1984 |
| Catholic Belfast and Nationalist Ireland in the era of Joe Devlin, 1871-1934 | Hepburn, Anthony C. | Monograph or Collective Volume | Oxford University Press | 2008 |
| Catholic Belief and Practice | Phillips, Peter | Article in Book | Oxford University Press | 2023 |
| Catholic Boston : studies in religion and community, 1870-1970 | | Monograph or Collective Volume | # | 1985 |
| Catholic Boy Scouts of Ireland pilgrimage to Rome in the Holy Year 1934 | Mulloy, John | Article in Journal | | 2010 |
| Catholic chaplains on the Western Front, 1915-1919 : Lancashire's pivotal role | Bellis, Steve | Thesis | | |
| Catholic church music in Ireland, 1878-1903 : Lyra Ecclesiastica and the Cecilian movement | Daly, Kieran Anthony | Monograph or Collective Volume | Four Courts | 1995 |
| Catholic church music in Limerick, c.1860-1965 | Collins, Paul | Article in Book | | 2018 |
| Catholic church records | Ryan, James G. | Article in Book | | 1992 |
| Catholic churches of the nineteenth century : some newspaper sources | Coombes, James | Article in Journal | | 1975 |
| Catholic churchmen and the Celtic revival in Ireland, 1848-1916 | Collins, Kevin | Monograph or Collective Volume | Four Courts | 2002 |
| Catholic clergy and religious practice in Ennis 1651-1842 | Ó Dálaigh, Brian | Article in Journal | | 2002 |
| Catholic clergy of Tullaherin parish | Cassin, Mary | Article in Journal | | 1987 |
| Catholic colonization on the western frontier | Shannon, James P. | Monograph or Collective Volume | Yale University Press | 1957 |
| Catholic colonization on the western frontier | Shannon, James P. | Monograph or Collective Volume | Arno P. | 1976 |
| Catholic confederates and the constitutional relationship between Ireland and England, 1641-1649 | Ó Siochrú, Micheál | Article in Book | | 2005 |
| Catholic Devotion in Victorian Scotland | Aspinwall, Bernard | Article in Book | | 2008 |
| Catholic disaffection and the oath of allegiance of 1774 | Morley, Vincent | Article in Book | | 2009 |
| Catholic Dublin : the public expression in the age of Paul Cullen | Daly, Mary E. | Article in Book | | 2011 |
| Catholic education : its functions and scope | McQuaid, John Charles, bishop, 1895-1973 | Monograph or Collective Volume | [s.n.] | 1962 |
| Catholic Education in Britain and Ireland | Parker, Stephen G. | Article in Book | Oxford University Press | 2023 |
| Catholic education in Ireland 1669-1685 | Howard, Leonard | Article in Journal | | 1969 |
| Catholic education in the archdiocese of Cashel, 1780-1880 | Meagher, Mary T. | Thesis | | 1970 |
| Catholic education in Victorian Hull | McClelland, Marie | Article in Book | | 1999 |
| Catholic education: in the light of Vatican II and 'Laudato Si' | Lane, Dermot | Monograph or Collective Volume | Veritas Publications | 2016 |
| Catholic elites and the Irish university question, 1860-1880 : European solutions for an Irish dilemma | Enright, Aidan | Article in Book | | 2012 |
| Catholic emancipation | Rogers, Patrick | Article in Book | | 1949 |
| Catholic emancipation : documents | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| Catholic Emancipation Act of 1829 | Kerr, Donal A. | Article in Journal | | 1980 |
| Catholic faith of the Irish slums : London, 1840-70 | Gilley, Sheridan | Article in Book | | 1973 |
| Catholic families of the Pale | Kingston, John | Article in Journal | | 1960 |
| Catholic families weren't always bigger : religion, wealth, and fertility in rural Ulster before 1911 | Ó Gráda, Cormac | Monograph or Collective Volume | University College Dublin, Centre for Economic Research | 1984 |
| Catholic Fiction: Catholics in Fiction | Murphy, James H. | Article in Book | Oxford University Press | 2003 |
| Catholic footsteps in old New York : a chronicle of Catholicity in the City of New York from 1524 to 1808 | Bennett, William Harper | Monograph or Collective Volume | Shwartz, Kirwin and Fauss | 1909 |
| Catholic girls will not be left behind : women’s higher education in Ireland 1879-1909 | Pašeta, Senia | Article in Book | | 1996 |
| Catholic Greenwich village : ethnic geography and religious identity in New York City, 1880-1930 | Shelley, Thomas | Article in Journal | | 2003 |
| Catholic grievances : comments | O'Hearn, Denis | Article in Journal | | 1987 |
| Catholic grievances and violence in Northern Ireland | Hewitt, Christopher | Article in Journal | | 1985 |
| Catholic grievances in Northern Ireland : appraisal and judgement | Kovalchek, Kassian A. | Article in Journal | | 1987 |
| Catholic grievances, Catholic nationalism : a comment | O'Hearn, Denis | Article in Journal | | 1983 |
| Catholic historiography in Australia | Inglis, Kenneth Stanley | Article in Journal | | 1958 |
| Catholic hopes and Protestant fears | McEvoy, James | Article in Journal | | 1983 |
| Catholic identity and the Revolt of the Netherlands, 1520-1635 | Pollmann, Judith | Monograph or Collective Volume | Oxford UP | 2011 |
| Catholic immigrants in America | Olson, J. S. | Monograph or Collective Volume | # | 1987 |
| Catholic influence and the secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1999 |
| Catholic influence on the health services, 1830-2000 | Barrington, Ruth | Article in Book | | 2003 |
| Catholic inheritance under the penal laws in Ireland | Fitzpatrick, Richard | Article in Journal | | 2020 |
| Catholic instruction in Ireland, 1720-1850 | Tynan, Michael | Monograph or Collective Volume | [s.n.] | 1985 |
| Catholic instruction in Ireland, 1720-1950 | Tynan, Michael | Monograph or Collective Volume | Four Courts | 1985 |
| Catholic intellectual culture in early modern Ireland | Cunningham, Bernadette | Article in Book | | 2014 |
| Catholic intellectual life in America : a historical study of persons and movements | Reher, M. M. | Monograph or Collective Volume | Macmillan | 1989 |
| Catholic Ireland | | Article in Book | | 2017 |
| Catholic Ireland and the Devotional Revolution | Roddy, Sarah | Article in Book | Oxford University Press | 2024 |
| Catholic Ireland in the Eighteenth Century. Collected Essays of Maureen Wall | Wall, Maureen (née Mac Geehin)
| Monograph or Collective Volume | Geography Publications | 1989 |
| Catholic Ireland, 1740-2016 | Barr, ColinÓ Corráin, Daithí | Article in Book | | 2016 |
| Catholic Ireland, 1864 | Corish, Patrick J. | Article in Journal | | 1964 |
| Catholic Literature and Literary Culture in Welsh, Scottish Gaelic, and Irish | Ó Muircheartaigh, Peadar | Article in Book | Oxford University Press | 2023 |
| Catholic Literature and Print Culture in English | Tomko, Michael | Article in Book | Oxford University Press | 2023 |
| Catholic loyalty in mid-Victorian Ireland | Keogh, Richard A. | Thesis | | |
| Catholic loyalty to king and pope in 18th-century Ireland | Wall, Maureen (née Mac Geehin) | Article in Journal | | 1961 |
| Catholic marriage under the Penal Code | Corish, Patrick J. | Article in Book | | 1985 |
| Catholic Martyrdom in Early Modern Ireland | Tait, Clodagh | Article in Journal | | 2004 |
| Catholic missionaries and Liberia : a study of Christian enterprise in west Africa, 1842-1949 | Hogan, Edmund M. | Monograph or Collective Volume | Cork University Press | 1981 |
| Catholic missions in the West Indian colonies : John Grace, an Irish missionary of Propaganda Fide, 1666-1668 | Pizzorusso, Giovanni | Article in Journal | | 1985 |
| Catholic Music | Cichy, Andrew | Article in Book | Oxford University Press | 2023 |
| Catholic Nationalism in the Irish Revival : A Study of Canon Sheehan, 1852-1913 | Fleischmann, Ruth | Monograph or Collective Volume | Macmillan and St Martin's Press | 1997 |
| Catholic orphanages 1890s-1950s : two case studies, St Brigid's Ryne and St Michael's Baulkham Hills | McGrath, Madeleine Sophie | Article in Journal | | 1991 |
| Catholic Parish Registers | Fitzsimons, Fiona | Article in Journal | | 2015 |
| Catholic parish registers in Clogher diocese | Mulligan, Patrick | Article in Journal | | 1985 |
| Catholic parish registers of Dublin city and suburbs | McAuliffe, E. J. | Article in Journal | | 1977 |
| Catholic participation in the diplomacy of the Southern Confederacy | Stock, Leo Francis | Article in Journal | | 1930 |
| Catholic periodicals of the past, 1 : the Catholic Penny Magazine, 1834-1835 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 2 : the Catholic Book Society and the Irish Catholic Magazine | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 3 : Philip Barron's Ancient Ireland, 1835 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 4 : the Catholic Luminary, 1840-1841 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 5 : Duffy's Irish Catholic Magazine, 1847-1848 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 6 : Duffy's Irish Catholic Magazine, 1847-48, part 2 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic periodicals of the past, 7 : the Catholic University Gazette, 1854-1856 | Wall, Thomas | Article in Journal | | 1964 |
| Catholic politics in early nineteenth-century Ireland | Ó hÓgartaigh, Margaret | Article in Journal | | 2010 |
| Catholic politics in the penal era : Father Sylvester Lloyd and the Delvin Address of 1727 | McBride, Ian | Article in Book | | 2011 |
| Catholic power and the Irish city : modernity, religion, and planning in Galway, 1944–1949 | Butler, Richard J. | Article in Journal | | 2020 |
| Catholic praxis and the Northern Ireland conflict | Lennon, Brian | Article in Book | | 1994 |
| Catholic preaching in Ireland, 1760-1840 | Ryan, David | Article in Book | | 2004 |
| Catholic priests and political violence in Ireland, 1919-21 | Heffernan, Brian J. | Thesis | | 2011 |
| Catholic protectionism or Irish nationalism? : religion and politics in Liverpool, 1829-1845 | Dye, Ryan | Article in Journal | | 2001 |
| Catholic qualification rolls index : Fermanagh and Monaghan | | Article in Journal | | 1959 |
| Catholic realities and pastoral strategies : another look at the historiography of Scottish Catholicism, 1878-1920 | Aspinwall, Bernard | Article in Journal | | 2008 |
| Catholic reformation in Ireland : the mission of Rinuccini, 1645-49 | Ó hAnnracháin, Tadhg | Monograph or Collective Volume | Oxford University Press | 2002 |
| Catholic relief and the political awakening of Irish Catholics in Nova Scotia, 1780–1830 | Kehoe, S. Karly | Article in Journal | | 2018 |
| Catholic religious cultures in the diocese of Dublin, 1614-97 | Gillespie, Raymond | Article in Book | | 2000 |
| Catholic religious practices and payments in seventeenth-century Ireland | Gillespie, Raymond | Article in Journal | | 1993 |
| Catholic religious publishing, 1800-1891 | Begadon, Cormac | Article in Book | | 2011 |
| Catholic rent lists from the diocese of Kilmore | Cunningham, Terence | Article in Journal | | 1963 |
| Catholic reorganisation - Methodist organisation - A study in parallels | Cooney, Dudley A. Levistone | Article in Journal | | 2007 |
| Catholic responses to the Act of Union | Keogh, Dáire | Article in Book | | 2001 |
| Catholic revival in the North of Ireland, 1603-41 | Mac Cuarta, Brian | Monograph or Collective Volume | Four Courts | 2007 |
| Catholic Revivals in Britain and Ireland | Mangion, Carmen M. | Article in Book | Oxford University Press | 2023 |
| Catholic schools : a survey of a Northern Ireland problem | Campbell, J. J. | Monograph or Collective Volume | Fallon | 1964 |
| Catholic schools and 'the system of national education' | Brenan, M. | Article in Journal | | 1947 |
| Catholic schools in Dublin in 1787-8 | Brady, John, d.1963 | Article in Journal | | 1955 |
| Catholic schools of old Dublin | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1951 |
| Catholic serials in the 19th century in the United States | Hatzfeld, HertaWillging, Eugene P. | Article in Journal | | 1957 |
| Catholic serials of the nineteenth century in South Carolina | Willging, Eugene P. | Article in Journal | | 1960 |
| Catholic sisterhoods and the immigrant church | Mageean, D. M. | Article in Book | | 1992 |
| Catholic social classes under the penal laws | Cullen, L. M. (Louis Michael) | Article in Book | | 1990 |
| Catholic society in New South Wales, 1788-1860 | Sutton, T. | Monograph or Collective Volume | [s.n.] | 1974 |
| Catholic stakhanovites? religion and the Irish Labour Party, 1922-73 | Puirséil, Niamh | Article in Book | | 2008 |
| Catholic survival in Protestant Ireland, 1660-1711 : Colonel John Browne, landownership and the Artices of Limerick | Kinsella, Eoin | Monograph or Collective Volume | Boydell | 2018 |
| Catholic terror in Ireland | Manhattan, Auro | Monograph or Collective Volume | Chick Publications | 1988 |
| Catholic Unionism, a case study : Sir Denis Stanislaus Henry (1864-1925) | Phoenix, Éamon | Article in Book | | 2013 |
| Catholic University | Tierney, Michael | Article in Book | | 1945 |
| Catholic University School and Newman's university, 1850-67 | Kerr, Donal A. | Article in Book | | 1967 |
| Catholic wealth in eighteenth-century Ireland | Wall, Maureen (née Mac Geehin) | Article in Journal | | 1957 |
| Catholic writing and the literary revival | Vance, Norman | Article in Book | | 2002 |
| Catholic Written Cultures | Monta, Susannah BrietzRyan, Salvador | Article in Book | | 2023 |
| Catholic-Christian identity and modern Irish poetry | O'Donoghue, Bernard | Article in Book | | 2013 |
| Catholic-nationalist attitudes to education in Northern Ireland, 1921-1947 | Farren, Seán | Article in Journal | | 1989 |
| Catholic-Protestant income differences in Northern Ireland | Borooah, V. K. | Article in Journal | | 1995 |
| Catholicising Fascism, Fascistising Catholicism? The Blueshirts and the Jesuits in 1930s Ireland | Cronin, Mike | Article in Journal | | 2007 |
| Catholicism and capitalist social order in Ireland, 1907-1973 : an historical institutionalist analysis | L'Estrange, Seán | Thesis | | |
| Catholicism and democratic political development in Ireland | Schmidt, David E. | Article in Journal | | 1974 |
| Catholicism and empire: Ireland and Lower Canada, 1760-1830 | Bric, Maurice J. | Article in Book | | 2016 |
| Catholicism and industrial society in Ireland | Fahey, Tony | Article in Book | | 1992 |
| Catholicism and industrial society in Ireland | Fahey, Tony | Article in Journal | | 1992 |
| Catholicism and national identity in the works of John McGahern | Maher, Eamon | Article in Book | | 2012 |
| Catholicism and nationalism : a historical reflection | Macaulay, Ambrose | Article in Book | | 2004 |
| Catholicism and nationalism in Ireland : from fusion in the 19th century to separation in the 21st century | White, Timothy J. | Article in Journal | | 2007 |
| Catholicism and Separatism, Conformity and the State | Questier, Michael | Article in Book | | 2023 |
| Catholicism and social discipline in pre-famine Ireland | Connolly, Sean J. | Thesis | | |
| Catholicism and the Irish confederate armies : for God and king? | Lenihan, Pádraig | Article in Journal | | 1994 |
| Catholicism and the Irish confederate armies : for God or king? | Lenihan, Pádraig, 1959- | Article in Journal | | 1994 |
| Catholicism and the New York Irish 1880-1910 | McLeod, Hugh | Article in Book | | 1987 |
| Catholicism in a Protestant kingdom : a study of the Irish 'ancien regime' | Leighton, C. D. A. | Monograph or Collective Volume | Macmillan | 1994 |
| Catholicism in county Fermanagh, 1795-1850 | Rafferty, Oliver P. | Article in Book | | 2004 |
| Catholicism in Early Modern Ireland and Britain | Ó hAnnracháin, Tadhg | Article in Journal | | 2005 |
| Catholicism in Ireland | Gilley, Sheridan | Article in Book | | 2003 |
| Catholicism in Ireland 1880–2015: rise, ascendancy and retreat | Ó Corráin, Daithí | Article in Book | | 2018 |
| Catholicism in Meath, c. 1622 | | Article in Journal | | 1972 |
| Catholicism in nineteenth-century Tyrone | Macaulay, Ambrose | Article in Book | | 2000 |
| Catholicism in Scotland to 1603 | Spurlock, R. Scott | Article in Book | | 2023 |
| Catholicism in the North of Ireland since 1891 | Rafferty, Oliver P. | Article in Book | | 1995 |
| Catholicism in the province of Armagh, 1603-1641 | Mac Cuarta, Brian | Thesis | | 2004 |
| Catholicism in Ulster, 1603-1983 : an interpretative history | Rafferty, Oliver P. | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| Catholicism in Ulster, 1800-50 | Connolly, Sean J. | Article in Book | | 1981 |
| Catholicism, Ireland and the Irish diaspora | Gilley, Sheridan | Article in Book | | 2005 |
| Catholicism, masculinity and middle-class respectability in the Irish Catholic temperance movement in nineteenth-century Canada | McLaughlin, Mike | Article in Book | | 2015 |
| Catholicism, nationalism and science | Jones, Greta | Article in Journal | | 1997 |
| Catholicism, politics and Irish America since 1890 : some critical considerations | Doyle, David Noel | Article in Book | | 1985 |
| Catholics and Catholicism in the eighteenth-century press | Brady, John, d.1963 | Monograph or Collective Volume | Catholic Record Society of Ireland | 1965 |
| Catholics and Protestantists in the N. Ireland labour market : why does one group perform better than the other? | Teague, Paul | Article in Journal | | 1997 |
| Catholics and protestants in an eighteenth-century Limerick parish : Ardcanny, 1659-1798 | Fleming, David A. | Article in Book | Four Courts Press | 2024 |
| Catholics and socialists in Scotland, 1900-1930 | Gilley, Sheridan | Article in Book | | 1989 |
| Catholics and the American revolution : a study in religious climate | Metzger, C. H. | Monograph or Collective Volume | | 1962 |
| Catholics and the law in Restoration Ireland | Smith, Paul | Monograph or Collective Volume | Manchester University Press | 2025 |
| Catholics and the upper middle class : a comment on roof | Greeley, Andrew M. | Article in Journal | | 1981 |
| Catholics and trade in eighteenth-century Ireland : an old debate revisited | Dickson, David | Article in Book | | 1990 |
| Catholics and Trinity : a historical view | O'Connell, M. | Article in Journal | | 1966 |
| Catholics first and politicians afterwards : the Labour Party and the workers' republic, 1936-39 | McGarry, Fearghal | Article in Journal | | 2000 |
| Catholics in a Protestant country : the papist constituency in eighteenth-century Dublin | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1998 |
| Catholics in Britain and Ireland, 1558-1829 | Mullett, Michael A. | Monograph or Collective Volume | Macmillan | 1998 |
| Catholics in colonial America | Ellis, J. T. | Monograph or Collective Volume | | 1965 |
| Catholics in Northern Ireland : political participation and cross-border relations, 1920-1932 | Biaggi, Cecilia | Thesis | | 2016 |
| Catholics in Northern Ireland, 1921-1969 | Elliott, Marianne | Article in Book | Oxford University Press | 2024 |
| Catholics in Northern Ireland, 1926-1939 | Kennedy, David | Article in Book | | 1967 |
| Catholics in South Carolina : a record | Madden, Richard C. | Monograph or Collective Volume | University Press of America | 1985 |
| Catholics in the movies | | Monograph or Collective Volume | Oxford UP | 2008 |
| Catholics in the north of Ireland 1850-1921 | Hepburn, Anthony C. | Article in Book | | 1978 |
| Catholics in the old South | Miller, Randall M. | Monograph or Collective Volume | [s.n.] | 1983 |
| Catholics in the United Kingdom, 1800-1820 | Mullett, Michael | Article in Book | Oxford University Press | 2023 |
| Catholics of consequence : transnational education, social mobility and the Irish Catholic elite, 1850-1900 | Ó Neill, Ciarán | Monograph or Collective Volume | Oxford University Press | 2014 |
| Catholics under the penal laws | Cullen, L. M. (Louis Michael) | Article in Journal | | 1986 |
| Catholics writing the nation in early modern Britain and Ireland | Highley, Christopher | Monograph or Collective Volume | Oxford University Press | 2008 |
| Catholics, conscription and archbishop Mannix | McKernan, Michael | Article in Journal | | 1977 |
| Catholics, land and the popery acts of Anne | Osborough, W. N. (William Nial) | Article in Book | | 1990 |
| Catholics, politicisation and the 1798 rebellion | Whelan, Kevin | Article in Book | | 1991 |
| Catholics, Politics, and the State in Britain | McClelland, V. Alan | Article in Book | Oxford University Press | 2003 |
| Catholics, science and civic culture in Victorian Belfast | Finnegan, Diarmid A.Wright, Jonathan Jeffrey | Article in Journal | | 2015 |
| Catholics, War and Britain's Armed Forces | Snape, Michael | Article in Book | Oxford University Press | 2023 |
| Ceisteanna na linne don Eaglais Chaitliceach in Éirinn | Ó Murchú, Helen | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2008 |
| Celibacy in the Catholic church : a brief history | O'Loughlin, Thomas | Article in Journal | | 1995 |
| Celtic and charity | O'Hagan, Frank | Article in Book | | 2004 |
| Celtic Football Club and the Irish in Scotland | Bradley, Joseph M. | Article in Book | | 2004 |
| Celtic minded 2 : essays on Celtic, football culture and idenity [sic] | | Monograph or Collective Volume | Argyll Publishing | 2006 |
| Celtic spirituality | | Monograph or Collective Volume | Paulist | 1999 |
| Censoring the spirit of Vatican II in Ireland : the Catholic archdiocese of Dublin and Reality magazine, 1965-71 | Murray, Peter | Article in Journal | | 2021 |
| Censorship in the two Irelands, 1921-69 | Martin, Peter | Thesis | | 2003 |
| Centenary celebrations : catalogue of the exhibition, Newman House, 19th -24th July 1954 | University College Dublin | Monograph or Collective Volume | University College | 1954 |
| Centenary of All Hallows College | O'Donnell, Thomas J. | Article in Journal | | 1942 |
| Centenary of the death of Edmund Ignatius Rice, founder of the Christian Brothers of Ireland | Anonymous | Monograph or Collective Volume | [s.n.] | 1944 |
| Centenary of the Passionists in Ireland, 1856-1956 | Anonymous | Monograph or Collective Volume | [s.n.] | 1956 |
| Centenary, 1870-1970 church of the Immaculate Conception and St Joseph, Crossgar | | Monograph or Collective Volume | Irish News | 1971 |
| Ceremonial culture in the Irish free state, 1922-1939 | Godson, Lisa | Thesis | | |
| Challenging times : The Irish-Catholic press in Dunedin and Adelaide, 1916-1919 | James, Stephanie | Article in Book | NA | 2020 |
| Challoner and St. Patrick's Day | Guazzelli, Victor | Article in Journal | | 1947 |
| Challoner's contemporaries in Ireland | Wall, Thomas | Article in Journal | | 1946 |
| Change and continuity in British anti-Catholicism, 1829-1982 | Wolffe, John | Article in Book | | 1996 |
| Change and continuity in Irish religion, 1974-1984 | Weafer, John | Article in Journal | | 1986 |
| Changing attitudes to the 1916 Rising | Shannon, James P. | Article in Journal | | 2017 |
| Changing Catholic culture in Ireland, 1950-1979 | Fuller, Louise | Thesis | | 1997 |
| Changing churches and liturgy | O'Byrne, Hugh | Article in Book | | 1999 |
| Chapel of Mary Immaculate Mother of God, St Colman's College, Newry | Campbell, E. | Monograph or Collective Volume | [s.n.] | 1943 |
| Chapel or church? The case of St Mary's, Pope's Quay, Cork | McParland, Edward | Article in Book | | 2012 |
| Chapel Royal, Dublin Castle | Derham, William
| Article in Journal | | 2017 |
| Chapels of Leighlinbridge, 1729 and 1788 | Nevin, Martin | Article in Journal | | 2008 |
| Chapels of Leighlinbridge, 1729 and 1788 | Nevin, Martin | Article in Journal | | 2008 |
| Chaplain extraordinary | Chadwick, Austin | Article in Journal | | 1971 |
| Chaplain in Spain, 1937 | Daly, Charles | Article in Journal | | 1988 |
| Charity and the Great Hunger in Ireland : the kindness of strangers | Kinealy, Christine | Monograph or Collective Volume | Bloomsbury | 2013 |
| Charity, church and the Society of St Vincent de Paul | Ní Chearbhaill, Máire | Article in Book | Columba | 2012 |
| Charles Bonaventure Maguire, O.F.M. (1768-1833) | Faulkner, Anselm | Article in Journal | | 1983 |
| Charles Carroll of Carrollton : painting the portrait of an Irish-American aristocrat | Cullen, Fintan | Article in Journal | | 2010 |
| Charles Eyne (1817-1902) | Lawlor, J. M. | Article in Journal | | 1984 |
| Charles Lucas : a forgotten artist? | Murphy, Seán | Article in Journal | | 1994 |
| Charles Lucas, Catholicism and nationalism | Murphy, Seán | Article in Journal | | 1993 |
| Charles MacNally, bishop of Clogher: Local and family background | Murphy, Owen | Article in Journal | | 2010 |
| Charles McNally, Maynooth professor and bishop of Clogher | Kerr, Donal A. | Article in Journal | | 1981 |
| Charles William Russell, D.D., president of Maynooth, 1857-80 | Macaulay, Ambrose | Article in Journal | | 1983 |
| Charleston's bishop John England and American slavery | Kelly, Joseph | Article in Journal | | 2001 |
| Charlotte Grace O'Brien and the Mission of Our Lady of the Rosary for the protection of Irish immigrant girls | Murphy, Maureen | Article in Journal | | 1992 |
| Charting the material culture of the 'Devotional Revolution': the Advertising Register of the 'Irish Catholic Directory', 1837-96 | Godson, Lisa | Article in Journal | | 2016 |
| Children of the dead end : the formation of the modern archdiocese of Glasgow, 1815-1914 | Aspinwall, Bernard | Article in Journal | | 1992 |
| Children’s burial grounds in Ireland (Cilliní) and parental emotions toward infant death | Murphy, Eileen M. | Article in Journal | | 2011 |
| Christ Church cathedral, Dublin : a short history | Lewis-Crosby, E. H. | Monograph or Collective Volume | | 1949 |
| Christian citizens : the Catholic church and radical politics 1790-1800 | Keogh, Dáire | Article in Book | | 1997 |
| Christian myths and legends | Evans, Vonnie Banville | Article in Book | | 1999 |
| Christianities in the early modern Celtic world | | Monograph or Collective Volume | Palgrave Macmillan | 2014 |
| Christians in Ulster 1968-1980 | Gallagher, EricWorrall, Stanley | Monograph or Collective Volume | Oxford University Press | 1982 |
| Christians, Catholics, Protestants : The Religious Links of Britain and Ireland with Continental Europe, c.1689-1800 | Conway, Stephen | Article in Journal | | 2009 |
| Christmas in Frenchpark long ago | Casey, Michael | Article in Journal | | 1998 |
| Chronicle : building the tower | Olden, Michael | Article in Journal | | 2003 |
| Chronicle : installation of the most Reverend Cahal Brendan Daly as archbishop of Armagh and primate of all Ireland | Anonymous | Article in Journal | | 1991 |
| Chronicle. Cardinal Cahal B. Daly. The Scholar-bishop (1917-2009) | McEvoy, James | Article in Journal | | 2010 |
| Chronology of events, 1641-9 | Anonymous | Article in Book | | 2001 |
| Chun Glóire Dé : an illustrated guide to Kilmallock Catholic Church, its history, contributors and clergy | | Monograph or Collective Volume | Kilmallock Historical Society | 2004 |
| Church and change : the Irish experience | Kung, Hans | Monograph or Collective Volume | Gill & Macmillan | 1986 |
| Church and class : Irish-Australian labour loyalties and the 1955 split | O'Connell, DeclanWarhurst, John | Article in Journal | | 1982 |
| Church and politics : the last twenty-five years | Ryan, Liam | Article in Journal | | 1979 |
| Church and religion in the Ulster crisis | Morrow, Duncan | Article in Book | | 1995 |
| Church and school in Northern Ireland : a Catholic view; a Protestant view; a politician's view | Farren, SeánMacaulay, AmbroseWorrall, Stanley | Article in Journal | | 1980 |
| Church and state - Irish style. Tradition and innovation | Donnelly, Peter | Article in Journal | | 1995 |
| Church and state : implications of change | Whyte, John | Article in Journal | | 1985 |
| Church and state : the wider issues | Comiskey, Brendan, Bishop of Ferns | Article in Journal | | 1985 |
| Church and state in Ireland (1922-2013) : contrasting perceptions of humanity | Maignant, Catherine | Article in Journal | | 2014 |
| Church and state in Ireland : perspectives of Vatican II | Hannon, Patrick | Article in Journal | | 2017 |
| Church and state in modern Ireland | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1969 |
| Church and state in modern Ireland | Keogh, Dermot | Article in Book | | 1991 |
| Church and state in modern Ireland : Mayo county librarian case, 1930-32 | Moran, Gerard | Article in Journal | | 1987 |
| Church and state in modern Ireland, 1923-1970 | Whyte, John | Monograph or Collective Volume | Gill & Macmillan | 1971 |
| Church and state in the Republic of Ireland | Whyte, John | Thesis | | |
| Church and State in Tudor Ireland. A history of penal laws against Irish catholics, 1534-1603. With a foreword by Professor Mary Hayden | Edwards, R. W. D. (Robert Walter Dudley) | Monograph or Collective Volume | | 1935 |
| Church and State, and Nationalism in Ireland | Rafferty, Oliver P. | Article in Book | Oxford University Press | 2003 |
| Church archives in the United States and Canada : a bibliography | Binsfield, Edward L. | Article in Journal | | 1958 |
| Church building | Kennedy, T. P. | Article in Book | | 1968 |
| Church music and musicology in Ireland : an afterword | White, Harry | Article in Book | | 1993 |
| Church music reform | Delany, James | Article in Journal | | 1946 |
| Church Music: A Barometer of Social-Religious Change | Muir, Thomas | Article in Book | Oxford University Press | 2023 |
| Church of Assumption, Tullamore | Broderick, BrídByrne, Michael | Monograph or Collective Volume | Esker Press for Offaly Historical and Archaeological Society | 2006 |
| Church of Corpus Christi golden jubilee, 1941-1991 | Anonymous | Monograph or Collective Volume | [s.n.] | 1991 |
| Church of Ireland and Roman Catholic church registers in Belfast | Public Record Office of Northern Ireland | Article in Journal | | 1981 |
| Church of Our Lady of the Most Holy Rosary dedicated Sunday 4th October 1896 : centenary celebrations Sept 28th-Oct 7th 1996 | Troy, B. | Monograph or Collective Volume | The author | 1996 |
| Church of St John the Baptist, Blackrock 1845-1995 | O'Connell, Michael | Article in Journal | | 1995 |
| Church of St John, Newport 1795-1923 | | Monograph or Collective Volume | Newport Historical and Archaeological Society | 1996 |
| Church of St Peter and Paul Balbriggan, 1842-1992 | Walsh, Jim | Monograph or Collective Volume | Balbriggan Historical and Cultural Society | 1992 |
| Church of the Immaculate Conception, Knightstown, Valentia Island, Co. Kerry, 1915-2015 : 200 years anniversary | | Monograph or Collective Volume | Centenary Committee | 2016 |
| Church of the Immaculate Conception, Termonfeckin 1883-1983 | Morgan, Patrick | Monograph or Collective Volume | Drogheda Independent | 1983 |
| Church policy in the Diocese of Derry after the Reformation | Donnelly, Philip | Article in Journal | | 2007 |
| Church, state and education in early modern Ireland | Gillespie, Raymond | Article in Book | | 1992 |
| Church, state and family : the advent of child guidance clinics in Independent Ireland | Feeney, Tom | Article in Journal | | 2012 |
| Church, state and Irish Christianity | Ford, David | Article in Journal | | 1980 |
| Church, state and nation in Ireland, 1898-1921 | Miller, David William, 1940- | Monograph or Collective Volume | Gill & Macmillan | 1973 |
| Church, state and nation in modern Ireland | Larkin, Emmet | Article in Journal | | 1975 |
| Church, state and social science in Ireland : knowledge institutions and the rebalancing of power, 1937-73 | Feeney, MariaMurray, Peter | Monograph or Collective Volume | Manchester University Press | 2017 |
| Church, state and society | Keogh, Dermot | Article in Book | | 1988 |
| Church, state and society, 1950-70 | Whyte, John | Article in Book | | 1979 |
| Church, state and the control of schooling in Ireland, 1900-1944 | Titley, E. B. | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Church, state, and sexual crime against children in Ireland after 1922 | Keating, Anthony | Article in Journal | | 2004 |
| Church, state, and society in Ireland since 1960 | Girvin, Brian | Article in Journal | | 2008 |
| Church-state relations in an independent Ireland | McDonagh, Enda | Article in Book | | 2003 |
| Church/state relationships and Roman Catholic schools in Northern Ireland 1922-1996 | McCavera, Patrick | Thesis | | |
| Churches and monunments | Madden, Gerard | Article in Book | | 1993 |
| Churches and theology in a century of revolution and reaction | Pierce, Andrew | Article in Book | | 2006 |
| Churches of the diocese of Ferns : symbols of a living faith | Ferns Diocesan History and Archive Group | Monograph or Collective Volume | Booklink | 2004 |
| Churches of the diocese of Kilmore | Kelly, Liam | Monograph or Collective Volume | Booklink | 2005 |
| Churches, governments and the media : confronting their own and each other's responsibilities | Horgan, John, b. 1940 | Article in Book | | 2003 |
| Churches, society and conflict in Northern Ireland | Morrow, Duncan | Article in Book | | 1996 |
| Churches, states and violences : how the Roman Catholic and Presbyterian churches addressed the violence of Northern Ireland ‘Troubles’ 1968-1994 | Leonard, William Allan | Thesis | | |
| Churches, the State, and Politics, 1800-1922: An Overview | Brown, Stewart J. | Article in Book | Oxford University Press | 2024 |
| Churchill and the naval chaplains | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1965 |
| Cien años de acción católica en la Argentina (1831-1931) | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1957 |
| Cillglas-Kilglas : the church by the stream : a history of the confiscation settlement and vesting of its lands | Carroll, P. J. | Monograph or Collective Volume | The author | 1996 |
| Cín lae Uí Mhealláin, friar O Meallan journal | Dillon, Charles | Article in Book | | 2000 |
| Circles of friends : a personal memoir | Brophy, P. J. | Monograph or Collective Volume | Carlovian Press | 1993 |
| Cistercians and Cistercian abbeys in sixteenth- and seventeenth-century Ireland | Hogan, Flannan, Rev. | Thesis | | 1972 |
| Cistercienses Irlandeses en Espana | Guerin Betts, Patrick | Article in Journal | | 1975 |
| Civic life and religion in early seventeenth-century Dublin | Lennon, Colm | Article in Journal | | 1983 |
| Civic privilege, state policy and the growth of recusancy: the patriciate of Dublin in the age of reformation, 1548-1613 | Lennon, Colm | Thesis | | 1987 |
| Civil Wars and Interregnum | Morrill, John | Article in Book | Oxford University Press | 2023 |
| Claiming the city : politics, faith, and the power of place in St. Paul | Wingerd, Mary Lethert | Monograph or Collective Volume | Cornell University Press | 2001 |
| Clais an Aifrinn | Carney, Áine | Article in Journal | | 2004 |
| Class and Catholic Irish Masculinity in Antebellum America : Young Men on the Make in Chicago | Kelleher, Patricia | Article in Journal | | 2009 |
| Class and ethnicity : Irish Catholics in England, 1880-1939 | Firedeng, Steven | Monograph or Collective Volume | [s.n.] | 1993 |
| Class and ethnicity : Irish Catholics in England, 1880-1939 | Fielding, Steven | Monograph or Collective Volume | Open University Press | 1993 |
| Class conflict and sectarianism in Belfast : from its origins to the 1930s | Munck, Ronnie | Article in Journal | | 1985 |
| Class, gender and religion : the Catholic church and the Irish poor in Victorian Liverpool | Kanya-Forstner, M. | Article in Book | | 1995 |
| Classifications of sacred space : a new understanding of Mass rock sites in Ireland | Bishop, Hilary, J. | Article in Journal | | 2016 |
| Clement Smyth (1810-1865) : a founder of New Melleray and Civil War bishop | Heffern, Colman | Article in Journal | | 1970 |
| Clement Smyth, Osco : Trappist monk and frontier prelate | Coogan, M. Jane | Article in Journal | | 1989 |
| Clement VIII and the counter-reformation in Ireland, 1592-1605 | Jones, Frederick M., Rev. | Thesis | | 1957 |
| Clergy lists of Elphin, 1731-1818 | | Article in Journal | | 1996 |
| Clergy of Clogher : biographical succession lists | Leslie, J. B. (James Blennerhassett) | Monograph or Collective Volume | Ulster Historical Foundation | 2006 |
| Clergy of Elphin diocese, 1810-1812 | | Article in Journal | | 1993 |
| Clerical Abuse | Daly, Marie E. : Pound, Marcus | Article in Book | Oxford University Press | 2023 |
| Clerical errors: Reading desire in nineteenth-century Irish painting | Nugent, Joseph | Article in Journal | | 2011 |
| Clerical income and its sources in the parish of Moycullen, in the wardenate of Galway, in pre-Famine Ireland, 1786-1823 | Hargett, CraigLarkin, Emmet | Article in Journal | | 2009 |
| Clerical indiscipline and ecclesiastical authority in Ireland 1690-1750 | O'Flaherty, Eamon | Article in Journal | | 1992 |
| Clerical indiscipline and ecclesiastical authority in Ireland, 1690-1750 | O'Flaherty, Eamon | Article in Journal | | 1992 |
| Clerical modernisers and the media in Ireland : the journalism of Fr Gerry Reynolds | Ganiel, Gladys | Article in Journal | | 2020 |
| Clerical recruitment, 1735-83 : documents from Windsor and Rome | | Article in Journal | | 1972 |
| Clerics of Derry | Anonymous | Article in Journal | | 1978 |
| Clerics, kings and Vikings : essays on medieval Ireland in honour of Donnchadh Ó Corráin | | Monograph or Collective Volume | Four Courts | 2015 |
| Clio is beautiful | Silke, John J. | Article in Journal | | 1979 |
| Cloak without dagger : Dr Thomas Hussey, 1746-1803 | Murphy, Martin | Article in Journal | | 1988 |
| Clódóireacht chaitliceach in Éirinn son ochtú haois déag | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| Clogher clerical students at the University of Leuven, 1548-1797 | Nilis, Jeroen | Article in Journal | | 2006 |
| Clogher diocesan archives | Forsythe, John | Article in Journal | | 1988 |
| Clogher diocesan papers, 2 | Forsythe, John | Article in Journal | | 1989 |
| Clogher record album : a diocesan history | | Monograph or Collective Volume | Cumann Seanchais Chlochair | 1975 |
| Clogherici : a dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1986 |
| Clogherici : a dictionary of the Catholic clergy of the diocese of Clogher (1535-1835) | Ó Gallchobhair, Pádraig | Article in Journal | | 1955 |
| Clogherici : Clogher clergy (1535-1835) | Ó Gallachair, Pádraig | Article in Journal | | 1967 |
| Clongowes Wood : a history of Clongowes Wood College 1814-1989 | Costello, Peter | Monograph or Collective Volume | Gill & Macmillan | 1989 |
| Clonkyne Leix | Comerford, M., P.P. | Article in Journal | | 1883 |
| Close of Mission at Rathnure (From the 'Wexford People', 15 June 1867) | Anonymous | Article in Journal | | 2005 |
| Closer to Brussels than to Rome? The EU as the new external referent for a secularised Irish society and a redefined Catholic identity | Penet, Jean-Christophe | Article in Journal | | 2009 |
| Cnoc Mhuire in picture and story | Ua Cadhain, Liam | Monograph or Collective Volume | O'Gorman | 1945 |
| Co-operation, compromise and confrontation : the 'Universal News' 1860-69 | McNicholas, Anthony | Article in Journal | | 2007 |
| Cobbles and confetti. Public order policing in late Victorian Belfast | Radford, Mark | Article in Journal | | 2007 |
| Cogging Berkeley? : The Querist and the rhetoric of Fianna Fáil's economic policy | Murphy, William | Article in Journal | | 2005 |
| Colin Johnston Robb and the 'Irish Ecclesiastical Record' | Ní Chearbhaill, Máire
| Article in Journal | | 2021 |
| Colla Dubh Mac Mahon, his ancestors and descendants | Ó Mórdha, P. | Article in Journal | | 1974 |
| Collecting Ulster's culture : are there really two traditions? | Buckley, Anthony D. | Article in Book | | 1988 |
| Collections relating to the dioceses of Kildare and Leighlin. 3 vols. | | Monograph or Collective Volume | | 1883 |
| College communities abroad : Education, migration and Catholicism in early modern Europe | | Monograph or Collective Volume | Manchester University Press | 2017 |
| Collèges anglais, écossais, irlandais dans les Pays-Bas français (1568-1793) | Trenard, Louis | Article in Book | | 1974 |
| Colleges, Seminaries and Male Religious Houses | Chambers, Liam | Article in Book | Oxford University Press | 2023 |
| Collegium Hibernorum de urbe; The Irish College Rome, 1628-1678: an early manuscript account of the foundation and development of the Ludovisian College of the Irish in Rome | | Monograph or Collective Volume | Pontifical Irish College | 2003 |
| Collon's churches | Bellew, SéamusRoe, Séamus | Article in Journal | | 2015 |
| Colonel Edward Wogan | Murtagh, Diarmuid | Article in Journal | | 1954 |
| Colonial identity in early seventeenth-century Ireland | Clarke, Aidan | Article in Book | | 1978 |
| Colonized Catholics : perceptions of honour and history in Michael Kearney's reading of 'Foras Feasa ar Éirinn' | Cunningham, Bernadette | Article in Book | | 2003 |
| Columbanians across the Channel | Fox, Yaniv | Article in Book | | 2015 |
| Combating Dublin body-snatchers: the Drumcondra mortsafe | Mytum, Harold | Article in Journal | | 2013 |
| Come! let us fly to freedom's sky : the response of Irish immigrants in the south to slavery during the late antebellum period | Meyers, Arthur S. | Article in Journal | | 2004 |
| Comhairle Mhic Clamha ó Achadh na muileann | | Article in Journal | | 1965 |
| Comhluadar deighilte : coimhlint in Collège des Lombards, Paris (1707-1752) | O'Connor, Priscilla | Article in Book | | 1995 |
| Coming clean? remembering the Magdalen laundries | Pine, Emilie | Article in Book | | 2011 |
| Commentarius Rinuccinianus ....1645-1649, Vol. 6 | Kavanagh, Stanislaus,White, Newport B. | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1949 |
| Commentarius Rinuccinianus de Sedis apostolicae legatione ad Foederatos Hiberniae Catholicos per annos 1645-49. Florentiae opus susceperunt atque absolverunt per annos 1661-1666 fr. pater Richardus (Barnabas O'Ferrall) Longfordensis, fr. pater Robertus (Daniel O'Connell) Desmondensis uterque e provincia Hibernica Ordinis min. Capuccinorum, nunc primum e fontibus totum edendum curat Fr. Pater Stanislaus (Joannes Kavanagh) eiusdem ordinis et provinciae | O'Connell, RobertO'Ferrall, Richard, d.1663 | Monograph or Collective Volume | Irish Manuscripts Commission | 1932; 1936; 1939; 1941; 1944; 1949 |
| Commentary, Fr. Nicholas Callan : scientist and theologian | Farrell, Dermot | Article in Journal | | 1998 |
| Commodius temples : Roman Catholic church building in nineteenth-century Dublin | Grimes, Brendan | Monograph or Collective Volume | Dublin City Public Libraries | 2010 |
| Communal identity in rural Northern Ireland | Loughrey, Patrick | Article in Journal | | 1986 |
| Communal solitude : the archaeology of the Carthusian houses of Great Britain and Ireland, 1178-1569 | Breeden, Francesca | Thesis | | |
| Community development and the Catholic Church | Joyce, DavidO'Connor, Raymond | Article in Book | | 2005 |
| Community in print: Irish-American publishers and readers | Sullivan, Eileen | Article in Journal | | 2011 |
| Community relations and the religious geography 1800-86 | Heatley, Fred | Article in Book | | 1983 |
| Comparing Post-World War II Catholicism in Quebec, Ireland and the USA | Baum, Gregory | Article in Book | | 2007 |
| Comparing Scotland and Northern Ireland | Bruce, Steve | Article in Book | | 2000 |
| Competing for the soul of Irish America : the Catholic Church and the Fenian Brotherhood of New York City | Lynch, Timothy G. | Article in Journal | | 2004 |
| Competitive religious cultures in nineteenth-century Belfast | Hempton, David | Article in Journal | | 1990 |
| Complete summary listing of journal holdings Dublin Diocesan Library | Catholic Church (Ireland) Archdiocese of Dublin Library | Monograph or Collective Volume | Dublin Diocesan Library | 1991 |
| Compulsory Irish in France | Walsh, T. J. | Article in Journal | | 1953 |
| Conceptualizing and responding to poverty in the Republic of Ireland in the 1960s : a case study of Dublin | Holohan, Carole | Article in Journal | | 2016 |
| Conciliation, anti-Orange politics and the sectarian scare: Dublin politics in the early 1820s | Katsuta, Shunsuke | Article in Journal | | 2011 |
| Concluding reflection : confronting the violence of the Irish reformations | Morrill, John Stephen, 1946- | Article in Book | | 2005 |
| Confederate banners | Sparks, M. | Article in Journal | | 1951 |
| Confederate Catholics and covenanters, 1644-6 | Lenihan, Pádraig, 1959- | Article in Book | | 2009 |
| Confederate Catholics at War, 1641-49 | Lenihan, Pádraig | Monograph or Collective Volume | Cork University Press | 2001 |
| Confessing Ireland : Gerald Griffin and the secret of emancipation | Murphy, Willa | Article in Journal | | 2013 |
| Confessional to-ing and fro-ing in the eighteenth-century diaspora : Helena Barry's story (1738) | O'Connor, Thomas | Article in Book | | 2015 |
| Confessionalisation in Ireland : periodisation and character, 1534-1649 | Lotz-Heumann, Ute | Article in Book | | 2005 |
| Confessionalization and clan cohesion : Ireland's contribution to Scottish Catholic renewal in the seventeenth century | Spurlock, Scott R. | Article in Journal | | 2012 |
| Confessionalization and clan cohesion : Ireland's contribution to Scottish Catholic renewal in the seventeenth century | Spurlock, R. Scott | Article in Book | | 2016 |
| Confidantes or competitors? Women, priests and conflict in post-Famine Ireland | Delay, Cara | Article in Journal | | 2005 |
| Conflict and change : the Irish of Kildare 1000-1269 | O'Byrne, Emmett | Article in Book | | 2006 |
| Conflict and Christianity in Northern Ireland | Mawhinney, Brian | Monograph or Collective Volume | Eerdmans | 1975 |
| Conflict, controversy and co-operation : the Irish council of churches and the troubles, 1968-1972 | Taggart, Norman W. | Monograph or Collective Volume | Columba | 2004 |
| Conflicting Loyalties, Conflicted Rebels : Political and Religious Allegiance among the Confederate Catholics of Ireland | Ó hAnnracháin, Tadhg | Article in Journal | | 2004 |
| Conformity and radicalism within the Catholic church : the case of the Northern Ireland crisis | McElroy, Gerald | Article in Book | | 1991 |
| Confounding the Garibaldian liars : the letters of Albert Delahoyde, Irish soldier of the Papal Battalion of St Patrick and Papal Zouave in Italy, 1860-1870. | O’Driscoll, Florry | Article in Journal | | 2016 |
| Confraternities and sodalities in Ireland: charity, devotion and sociability | | Monograph or Collective Volume | Columba Press | 2012 |
| Confraternities and the renewal of Catholic Dublin, c. 1750 - c. 1830 | Begadon, Cormac | Article in Book | Columba | 2012 |
| Confraternities in Ireland : a long view | Lennon, Colm | Article in Book | Columba | 2012 |
| Confraternities, their decline and the problem of sources : background, analysis and review | Fuller, Louise | Article in Book | Columba | 2012 |
| Confrontation in Derrytrasna | MacAtasney, Gerard | Article in Journal | | 1996 |
| Confronting "the social question" : American catholic thought and the socio-economic order in the nineteenth century | Curran, Robert Emmet | Article in Journal | | 1986 |
| Confronting modernity : Pope Leo XIII, Rerum novarum, and the Catholic Church in Ireland and Poland, 1878-1914 | Luminiello, Rose | Thesis | | |
| Confusion abounding : Bernard O'Higgins, O.S.A., bishop of Elphin, 1542-1561 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1979 |
| Conor O'Mahony and his arguments for Irish Independence | Minihane, John | Article in Journal | | 2010 |
| Conscience and commerce in Georgian Waterford | Walton, Julian | Article in Journal | | 2011 |
| Conscription : resolutions of the Irish hierarchy | Anonymous | Article in Journal | | 1942 |
| Consecration of Abp. Carpenter - 1770 June 3 | Curran, M. J. | Article in Journal | | 1955 |
| Constitutional nationalism in Northern Ireland | Girvin, Brian | Article in Book | | 1994 |
| Constructing discord : ideology, propaganda, and English responses to the Irish Rebellion of 1641 | Shagan, Ethan H., 1971- | Article in Journal | | 1997 |
| Constructing the repeal spectacle : monster meetings and people power in pre-famine Ireland | Owens, Gary | Article in Book | | 1993 |
| Contemporary Catholic and Protestant Irish America : social identities, forgiveness, and attitudes towards 'The Troubles' | Roe, Michael | Article in Journal | | 2002 |
| Contemporary Ireland and the religious question : a Catholic view | O'Riordan, Michael | Article in Book | | 1912 |
| Contemporary Ireland and the religious question, 2 : a Church of Ireland view | Moore, CourtenayMorgan, J. H. | Article in Book | | 1912 |
| Contentious Christians : Protestant-Catholic Conflict since the Reformation | Wolffe, John | Article in Book | | 2004 |
| Contentious Rituals: Parading the Nation in Northern Ireland | Blake, Jonathan S. | Monograph or Collective Volume | Oxford University Press | 2019 |
| Contested Terrains : Ethnic and Gendered Spaces in the Harbour Grace Affray | Keough, Willeen | Article in Journal | | 2009 |
| Contesting hegemony : the historical geography of the Protestant and Roman Catholic communities of South Tipperary, c.1570-1841 | Butler, David J., 1976- | Thesis | | 2003 |
| Context and meaning : Roman Catholic devotion to the Blessed Sacrament in nineteenth century America | Taves, Ann | Article in Journal | | 1985 |
| Continental opinion | Hennig, John | Article in Book | | 1949 |
| Contribution to a history of the Basilica of Saint Clement in Rome | Kane, Eileen | Article in Journal | | 1984 |
| Convent of Mercy, Longford : answering the call | Gilmurray, Immaculata | Article in Journal | | 2011 |
| Convent schools | C., K. | Article in Journal | | 1996 |
| Convent schools and national education in nineteenth-century Ireland, negotiating a place within a non-denominational system | Nowlan-Roebuck, CatherineRaftery, Deirdre | Article in Journal | | 2007 |
| Convents and Women Religious | Moutray, Tonya J. | Article in Book | Oxford University Press | 2023 |
| Conversion and family identity in eighteenth-century Europe : the Dillons of Costello-Gallen | Ó Conaill, Colm James | Article in Book | | 2005 |
| Conversion by coercion? The Reformation in Ireland | Jefferies, Henry A. | Article in Journal | | 2018 |
| Conversions among the legal profession in Ireland in the eighteenth century | Power, Thomas P. | Article in Book | | 1990 |
| Convert rolls 1703-1849 and Catholic qualification rolls 1774-1845 | Fitzsimons, Fiona
| Article in Journal | | 2016 |
| Converts | Power, Thomas P. | Article in Book | | 1990 |
| Cops, priests and the decline of Irish America : True confessions (1981) | Meagher, Timothy J. | Article in Book | | 2008 |
| Cork : a diocesan history | Bolster, Angela | Article in Journal | | 1973 |
| Cork imprints of Catholic historical interest 1723-1804 : a provisional check-list | Fenning, Hugh | Article in Journal | | 1995 |
| Cork imprints of Catholic historical interest 1805-1830 : a provisional check list, part 2 | Fenning, Hugh | Article in Journal | | 1996 |
| Cork mission to Peru 1965 to 2015, Golden Jubilee reflection: Archdeacon Duggan and Kerry's significant role | Ó Luanaigh, Tomás | Article in Journal | | 2015 |
| Cork-related letters patent of 1658 | Long, Patrick | Article in Journal | | 1997 |
| Cornelius Denvir and the "Spirit of Fear" | Silke, John J. | Article in Journal | | 1987 |
| Correspondance romaine de l'anti-janséniste Francoise Porter | Ceyssens, Lucien | Article in Journal | | 1964 |
| Correspondence between Bishop O'Dwyer and Bishop Foley on the Dublin Rising, 1916-17 | O'Callaghan, Edward P. | Article in Journal | | 1978 |
| Correspondence from Jean-Baptiste Devenet and Claude Prost, book merchants of Lyon, to Fr Luke Wadding OFM, 1647-1654 | Hazard, Benjamin | Article in Journal | | 2011 |
| Correspondence of Abp Carpenter, with BP Sweetman of Ferns | Curran, Michael | Article in Journal | | 1956 |
| Correspondence of Daniel O'Connell, the Liberator. Edited with notices of his life and times | | Monograph or Collective Volume | John Murray | 1888 |
| Correspondence of David Rothe and James Ussher 1619-23 | O'Sullivan, William, 1921-2000 | Article in Journal | | 1994 |
| Correspondence of Fr. Ludovico Mansoni, S. J., papal nuncio to Ireland | | Article in Journal | | 1953 |
| Correspondence of Irish interest in the Lettere in Propaganda archives : vols 27-34 (1649-64) | | Article in Journal | | 1988 |
| Correspondence of Irish interest in the Lettere in Propaganda Archives : vols. 27-34 (1649-64) | Millett, Benignus | Article in Journal | | 1988 |
| Correspondence of Irish interest in the Lettere in Propaganda Archives, vol. 38 (1657-1664) | | Article in Journal | | 1990 |
| Correspondence of the lexicographer Thomas Connelly OP (1783-93) in the Archivio General de Simancas | Bergman, Ted | Article in Journal | | 2010 |
| Correspondence of the superiors of the Jesuit mission in Ireland with John O'Brien, S.J., rector of Salamanca | | Article in Journal | | 1965 |
| Correspondence: the Judge family | Judge, Kezia Sarah | Article in Journal | | 1989 |
| Correspondencia entre la Nunciatura en Espana y la Santa Sede, reinado de Felipe III (1598-1621). Vols 5-6 | | Monograph or Collective Volume | Iglesia Nacional Española | 1966 |
| Counsellor Terence MacDonagh : a great Catholic lawyer of the penal days | MacDonagh, J. C. T. | Article in Journal | | 1947 |
| Counter reformation: the Catholic Church, 1550–1641 | Ó hAnnracháin, Tadhg | Article in Book | | 2018 |
| Counter-reformation problems : Munster | Olden, Michael | Article in Journal | | 1965 |
| County Carlow schools in 1824 | O'Neill, Pat | Article in Journal | | 2007 |
| County Donegal in the Catholic Qualification Rolls, 1778-1790 | Ó Domhnaill, Seán | Article in Journal | | 1949 |
| County Kilkenny priests in Newfoundland | Whelan, Kevin | Article in Journal | | 1986 |
| County Monaghan before the emigration to Prince Edward Island | O'Grady, Brendan | Article in Book | | 1992 |
| County Monaghan immigrants in the Consett area of County Durham, England, 1842-1855 | Duffy, Godfrey F. | Article in Journal | | 1997 |
| County Wexford and Savannah, Georgia, 1848-1860 : a compilation of records and articles of County Wexford emigrants to Savannah | Kehoe, Lory | Monograph or Collective Volume | The author | 2013? |
| County Wexford priests in Newfoundland | Whelan, Kevin | Article in Journal | | 1985 |
| Covenanters and antislavery in the Atlantic world | Moore, Joseph S. | Article in Journal | | 2013 |
| Creating an Irish identity: print, culture, and the Irish Franciscans of Louvain | Caball, Marc | Article in Book | | 2018 |
| Creideamh agus athartha : idéeoloaíocht pholaitíochta agus aos léinn na Gaeilge i dthús an seachtú haois déag | Mac Craith, Mícheál | Article in Book | | 1996 |
| Crisis of Faith or Collapse of Empire | Taylor, Lawrence J. | Article in Book | | 2007 |
| Critical voices in Irish Catholicism: reading the signs of the times | Fuller, Louise | Article in Journal | | 2011 |
| Criticising the godly prince : Malcolm Hamilton's 'Passages and Consultations' | Ford, Alan, 1956- | Article in Book | | 2003 |
| Croagh Patrick (Cruach Phádraig - the Reek) : an ancient mountain pilgrimage | Hughes, Harold | Monograph or Collective Volume | Harry Hughes | 1991 |
| Croke of Cashel : the life of Archbishop Thomas William Croke, 1823-1902 | Tierney, Mark | Monograph or Collective Volume | Gill & Macmillan | 1976 |
| Cromwell and Ireland: new perspectives; edited by Martyn Bennett, Ray Gillespie, R. Scott Spurlock, | Ó Siochrú, Micheál | Article in Journal | | 2021 |
| Cromwell at Drogheda. Some new light on old faces | Matthews, Brendan | Article in Journal | | 2012 |
| Cromwell was framed : Ireland 1649 | Reilly, Tom | Monograph or Collective Volume | Chronos Books | 2014 |
| Cromwell's siege of Waterford, 1649 | Simms, J. G. (John Gerald) | Article in Journal | | 1960 |
| Croppies, Celts and Catholics : the Irish in Australia | McConville, Chris | Monograph or Collective Volume | Edward Arnold | 1987 |
| Crucifixion stone from Summerhill, Co. Meath | Prendergast, Ellen | Article in Book | | 1998 |
| Cuairt an Ard-easbaig Cróc ar Thír Chonaill (1891) | Ó Baoighill, Pádraig | Article in Journal | | 2006 |
| Cúig teagaisg chríostaidhe de'n seachtmadh aois déag : compráid | Ó Fachtna, Anselm | Article in Book | NA | 1944 |
| Cuimhní cinn : na Bráithre Críostaí agus an Daingean | Firtéar, Pádraig | Article in Book | | 1996 |
| Cultúr agus creideamh sa 17ú hAois | Ó Doibhlín, Breandán | Article in Book | | 2008 |
| Cultural traditions in Northern Ireland | | Monograph or Collective Volume | [s.n.] | 1989 |
| Cultural traditions in Northern Ireland : inaugural lecture by Roy F. Foster; varieties of Irishness and proceedings of the Cultural Traditions Group conference, 3-4 March 1989 | Crozier, MaurnaFoster, R. F. (Robert Fitzroy) (Roy), 1949- | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1989 |
| Culture and diplomacy. The Spanish Hapsburg dimension in the Irish Counter Reformation movement, c.1529-c.1629 | Downey, Declan M. | Thesis | | 1994 |
| Culture and religion, 1815-70 | Hill, Myrtle | Article in Book | | 2011 |
| Culture, conflict and labour migration : Victorian Cumbria's Ulster connection | MacRiald, Donald M. | Article in Journal | | 1996 |
| Culture, identity and tradition : changing definitions of Irishness | Connolly, Sean J. | Article in Book | | 1997 |
| Culture, religion and violence in Northern Ireland | Murray, Dominic | Article in Book | | 1995 |
| Da Cunha's account of the condition of Catholics in the British Isles in 1710 | Da Cunha, LuisSachse, William Lewis | Article in Journal | | 1963 |
| Dagger John : Archbishop John Hughes and the Making of Irish America | Loughery, John | Monograph or Collective Volume | Cornell University Press | 2018 |
| Daily life at the Irish College in Nantes (1775-1785) | Noël, Jean C. | Article in Journal | | 1982 |
| Dán ar Phádraig Mac Síomóin | Ó Fiaich, Tomás | Article in Journal | | 1960 |
| Dán molta don Athair Uilliam Ó Fearaíola (1809-1878 | Ó hÓgáin, Éamonn | Article in Journal | | 2015 |
| Dancing on the hobs of hell : rural communities in Clare and the Dance Halls Act of 1935 | Ó hAllmhuráin, Gearóid | Article in Journal | | 2005 |
| Danial O'Connell oratore | Spina, Giorgio | Article in Book | | 1990 |
| Daniel Delany, bishop of Kildare and Leighlin (1787-1814) and the commencement of the veto controversy in Ireland | Power, Ann | Article in Journal | | 2011 |
| Daniel Mannix and Ireland | Kiernan, Colm | Monograph or Collective Volume | Alella Books|Gill & Macmillan | 1983 |
| Daniel Mannix and Ireland | Kieran, Colm | Monograph or Collective Volume | [s.n.] | 1985 |
| Daniel Mannix, Archbishop of Melbourne | Murphy, Frank P. | Monograph or Collective Volume | Advocate Press | 1948 |
| Daniel Mannix, Ireland and Australia | Kiernan, Colm | Article in Book | | 1984 |
| Daniel Mannix, priest and patriot | Gilchrist, Michael | Monograph or Collective Volume | [s.n.] | 1982 |
| Daniel Murray, 1768-1852 | Flannery, Maeve | Article in Journal | | 2008 |
| Daniel Murray, archbishop of Dublin, 1823-1852 | Lysaght, Moira | Article in Journal | | 1974 |
| Daniel Murray, archbishop of Dublin, 1823-1852 | Murray, P. J. | Article in Journal | | 1985 |
| Daniel O'Connell | O'Ferrall, Fergus | Monograph or Collective Volume | Gill & Macmillan | 1981 |
| Daniel O'Connell | McMahon, Sean | Monograph or Collective Volume | Mercier Press | 2000 |
| Daniel O'Connell and Alfred Elmore's 'Martyrdom of Thomas à Becket | de Bhailís, Caoimhín | Article in Journal | | 2018 |
| Daniel O'Connell and Henry Cooke : the conflict of civil and religious liberty in modern Ireland | O'Ferrall, Fergus | Article in Journal | | 1986 |
| Daniel O'Connell and the Bible War | Monaghan, Evie | Article in Book | | 2013 |
| Daniel O'Connell and the Repeal year | McCaffrey, Lawrence J., 1925- | Monograph or Collective Volume | University of Kentucky Press | 1966 |
| Daniel O'Connell's lord mayoralty, 1841-42 | Fitzpatrick, Áine | Article in Journal | | 1991 |
| Daniel O'Connell's Roman bequest | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Daniel O'Connell, 1775-1847 : an ideal patriot in any age | Gavin, Tadhg | Article in Journal | | 1976 |
| Daniel O'Connell, democrat, liberal Catholic and husband | O'Connell, Maurice R. | Article in Journal | | 1993 |
| Daniel O'Connell, the 'Liberator', 1775-1847 : changing images | O'Ferrall, Fergus | Article in Journal | | 1994 |
| Dark spots in Irish society : unmarried motherhood, crime and prosecution in Ireland, 1900-1950 | Rattigan, Cliona | Thesis | | 2008 |
| Dark walled up with stone : contrasting images of Irish Catholicism | Kenny, Colum | Article in Journal | | 2014 |
| David Moriarty (1814-77) : 1, the making of a bishop | O'Shea, Kieran | Article in Journal | | 1972 |
| David Moriarty (1814-77) : 4, ecclesiastical affairs | O'Shea, Kieran | Article in Journal | | 1973 |
| David Rothe | Hegarty, Maureen | Article in Journal | | 1979 |
| David Rothe, bishop of Ossory (c.1573-1650): bishop and historian | O'Connor, Thomas | Article in Journal | | 2009 |
| David Rothe, bishop of Ossory 1618-50 | Corish, Patrick J. | Article in Journal | | 1984 |
| De praesulibus Hiberniae potissimis Catholicae religionis in Hibernia serendae, propagandae, et conservandae authoribus, 1 : Provinces of Armagh and Dublin; 2 : Provinces of Cashel and Tuam. 2 vols. | Lynch, John, d. in or after 1677 | Monograph or Collective Volume | The Stationery Office | 1944 |
| De rebus in Hibernia gestis | Stanihurst, Richard | Monograph or Collective Volume | | 1584 |
| De Valera and Archbishop Daniel Mannix | Broderick, Joe | Article in Journal | | 1994 |
| De Valera, the Catholic church and the 'red scare' 1931-1932 | Keogh, Dermot | Article in Book | | 1983 |
| Dean Terence O'Shaughnessy | Murphy, IgnatiusTierney, Mark | Article in Journal | | 1989 |
| Dean Walter Meyler and the Andrean Schools, Cumberland Street, Westland Row 1847-1864 | Roantree, Gail C. | Article in Journal | | 202 |
| Dear God : the price of religion in Ireland | McCann, Eamon | Monograph or Collective Volume | Bookmarks | 1999 |
| Death comes to the archbishop | Dempsey, Anthony | Article in Journal | | 1939 |
| Death in the garden: Patrick Byrne's mortuary chapel at Goldenbridge Cemetery, Dublin | Hurley, Livia | Article in Journal | | 2016 |
| Death notices and obituaries in provincial Irish newspapers, 1820-1900 | Breathnach, CiaraButler, David | Article in Book | | 2013 |
| Death of a Tipperary Blueshirt | Grace, Daniel | Article in Journal | | 2014 |
| Debunking the myths of Operation Demetrius : the introduction of internment in Northern Ireland in 1971 | McCleery, Martin Joseph | Article in Journal | | 2012 |
| Declaration of Emperor Joseph II on the Irish and English Franciscans and Dominicans in the Low Countries, 1782 | Conlan, Patrick, 1940- | Article in Journal | | 1993 |
| Deconstructing diasporas : networks and identities among the Irish in Buffalo and Toronto, 1870–1910 | Jenkins, William | Article in Journal | | 2005 |
| Deconstructing the sectarian epic : The Northern Ireland civil rights movement and the world beyond Irish shores, 1963-1969 | Gagné, Michel Jacques | Article in Journal | | 2007 |
| Defence Forces Chaplains and the United Nations Mission to the Congo, 1960-1964 | Hartigan, Maurice | Article in Journal | | 2021 |
| Defenderism in Leitrim during the 1790s | Kelly, Liam | Article in Journal | | 1986 |
| Defenders of the faith : Twelfth of July rhetoric in the later Brookeborough era, 1954-1962 | Robinson, Helen | Article in Journal | | 2012 |
| Defining the nation : recent historiography and Irish nationalism | English, Richard | Article in Journal | | 1995 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, M. | Article in Journal | | 1999 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, M. | Article in Book | | 2000 |
| Defining womanhood : Irish women and the Catholic church in Victorian Liverpool | Kanya-Forstner, Martha | Article in Journal | | 1999 |
| Delinquency among Irish Catholic children in Victorian London | Feheney, John P. M. | Article in Journal | | 1983 |
| Denis Harty : vicar apostolic of Killaloe, 1657-1667 | Murphy, Ignatius | Article in Journal | | 1989 |
| Denis Henry : "An Irish Catholic Unionist" | McDonnell, A. D. | Article in Book | | 1995 |
| Denis Maguire OFM, Bishop of Kilmore 1770-98 | Duffy, Francis | Article in Journal | | 1997 |
| Denunciation of Antonio de Patricio [Anthony Fitzpatrick], O.P., to the Lisbon Inquisition (1699) | O’Connor, Thomas
| Article in Journal | | 2022 |
| Der Katholizismus in Schottland 1560-2005 | Halloran, Brian M. | Article in Book | | 2005 |
| Dermot O'Hurley's last visit to Tipperary | Hayes, William | Article in Journal | | 1992 |
| Derry : an outline history of the diocese | Bonner, Brian | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1982 |
| Derry and the Boyne : a contemporary Catholic account of the siege of Derry, the battle of the Boyne, and the general condition of Ireland in the Jacobite war | Plunket, Nicholas | Monograph or Collective Volume | Belfast Historical and Educational Society | 1990 |
| Derry Diocesan Archive | Daly, Edward | Article in Journal | | 2005 |
| Derry's backyard : the barony of Inishowen 1650-1800 | Dickson, David | Article in Book | | 1995 |
| Desegregating the national schools : Archbishop Murray (1823-1852) as a pioneer of church-state cooperation | Griffin, Seán | Article in Journal | | 1994 |
| Desire, sex, gender and anxiety - Irish 'virgin' worship : from psychological origins to cultural dynamics | Tipper, Christopher | Article in Journal | | 2005 |
| Destabilizing Ulster, 1641-1642 | Gillespie, Raymond | Article in Book | | 1993 |
| Dev and his alma mater : Eamon de Valera's lifelong association with Blackrock College 1898-1975 | Farragher, Sean P. | Monograph or Collective Volume | Paraclete | 1984 |
| Devenish d'Athlone: an extraordinary soldier of fortune | Moran, Alan | Article in Journal | | 2020 |
| Devoted to archaeology : Professor (Canon) Patrick Power (1862-1951) | Twohig, Elizabeth Shee | Article in Journal | | 2013 |
| Devotional and Sacramental Cultures | Ryan, Salvador | Article in Book | Oxford University Press | 2023 |
| Devotional writings of the Irish Franciscans 1224-1950 | Mooney, Canice | Monograph or Collective Volume | Four Masters | 1952 |
| Dialogue of life and faith : the Irish Columban contribution to Christian-Muslim relations in the Philippines | Collins, Neil | Article in Book | | 2015 |
| Diasporic legacies : place, politics, and music among the Ottawa Valley Irish | Trew, Johanne Devlin | Article in Book | | 2003 |
| Dictionary of the American hierarchy (1789-1964) | Code, J. B. | Monograph or Collective Volume | Wagner | 1964 |
| Did Protestantism fail in early eighteenth-century Ireland? Charity schools and the enterprise of religious and social reformation, c.1690-1730 | Hayton, D. W. (David William) | Article in Book | | 1995 |
| Die doppelte Konfessionalisierung in Irland : Konflikt und Koexistenz im 16. und in der ersten Hälfte des 17. Jahrhunderts | Lotz-Heumann, Ute | Monograph or Collective Volume | Mohr Siebeck | 2000 |
| Die Entwicklung der politischen Parteien in Irland : nationalizmus, katholizumus und agrarischer konservatismus als determinanten der Irischen politik von 1823 bis 1977 | Murphy, Detlef | Monograph or Collective Volume | Leske und Budrich | 1982 |
| Die Katholikenemanzipation in Grossbritannien und Irland. Ein Beitrag zur Geschichte religiöser Toleranz | Blötzer, Joseph | Monograph or Collective Volume | | 1905 |
| Difficulties on all sides : the Irish Columban missionary who met Mao Tse-tung | Collins, Neil | Article in Book | | 2015 |
| Diocesan clerical life in Florida | McNally, Michael J. | Article in Journal | | 1995 |
| Diocese of Killaloe. Vol. 3 : 1851-1904 | Murphy, Ignatius | Monograph or Collective Volume | Four Courts | 1995 |
| Diocese of Kilmore (1678-1728) | MacKiernan, Francis J. | Article in Journal | | 2002 |
| Diocese of Kilmore : it's [sic] bishops and priests, 1136-1988 | MacKiernan, Francis J. | Monograph or Collective Volume | Breifne Historical Society | 1989 |
| Diolaim beag cuinahne ar an Chairdinéal Ó Fiaich agus and Réalt | Ní Thuama, Máire | Article in Journal | | 1992 |
| Diplomatic preparations for Kinsale | O'Connor, Thomas | Article in Book | | 2002 |
| Directory of the Catholic clergy of the diocese of Cloyne & Ross, 1836-1893 : including available obituary lists | | Monograph or Collective Volume | B. Troy | 1994 |
| Discerning the spirits. the Irish Jesuits and political violence, 1919-21 | Heffernan, Brian | Article in Journal | | 2014/2015 |
| Discipline, sentiment and the Irish-American public : Mary Ann Sadlier's popular ficiton | Howes, Marjorie | Article in Journal | | 2005 |
| Discipline, sentiment and the Irish-American public : Mary-Ann Sadlier's popular fiction | Howes, Marjorie | Article in Journal | | 2005 |
| Discourse of the religion anciently professed by the Irish and Scottish, showing it to be for substance the same with that which at this day is by public authority established in the Church of England | Ussher, James, bishop, 1581-1656 | Monograph or Collective Volume | | 1624 |
| Discourses of nation among migrants from Northern Ireland : Irishness, Britishness and the spaces in-between | Ní Laoire, Caitríona | Article in Journal | | 2002 |
| Discoverers and discoveries : the Penal Laws and Dublin property | O'Neill, Thomas Patrick | Article in Journal | | 1983 |
| Discovering Irish nuns in the nineteenth-century United States : the case of Chicago | Hoy, Suellen | Article in Book | | 2005 |
| Discovering migration in the seventeenth century : Propaganda Fide, the Holy Office, and foreigners | Sanfilippo, Matteo | Article in Book | NA | 2020 |
| Discrimination in Northern Ireland : a rejoinder | Hewitt, Christopher | Article in Journal | | 1983 |
| Display, sacramentalism and devotion : the medals of the archconfraternity of the Holy Family, 1922-39 | Godson, Lisa | Article in Book | Columba | 2012 |
| Disputes in the Irish college, Douai (1594–1614) | O'Connor, Thomas | Article in Journal | | 2019 |
| Disrupted and disruptive : continental influence on the Confederate Catholics of Ireland | Ó hAnnracháin, Tadhg | Article in Book | | 2002 |
| Dissonant voices : faith and the Irish diaspora | | Monograph or Collective Volume | Institute for Theological Partnerships Publishing | 2015 |
| Distinguishing Catholics and Protestants among Irish Immigrants to Clydeside : A New Approach to Immigration and Ethnicity in Victorian Britain | Foster, JohnHouston, MuirMadigan, Chris | Article in Journal | | 2002 |
| Distinguishing Catholics and Protestants among Irish immigrants to Clydeside : a new approach to immigration and ethnicity in Victorian Britain | Foster, JohnHouston, MuirMadigan, Chris | Article in Journal | | 2002 |
| Divided loyalties : the question of the oath for Irish Catholics in the eighteenth century | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Four Courts | 1997 |
| Divine right? : the Parnell split in Meath | Lawlor, David | Monograph or Collective Volume | Cork University Press | 2007 |
| Dixon of Castlebridge, Co. Wexford | Goodall, David | Article in Journal | | 1984 |
| Do penance or perish? A study of the Magdalen asylums in Ireland | Finnegan, Frances | Monograph or Collective Volume | Congrave | 2001 |
| Doctrinal instruction in Irish : the work of Antony Gearnon, O.F.M. | Wall, Thomas | Article in Journal | | 1944 |
| Document : Clogher and the continent | | Article in Journal | | 1953 |
| Documentos de interés para Alcalá de Henares en la sección de manuscritos de Biblioteca Nacional de Madrid | Ballesteros Torres, Pedro | Article in Journal | | 2000 |
| Documents concerning the Collegium Pastorale Hibernicum of Louvain, 1624 | | Article in Journal | | 1951 |
| Documents concerning the Irish College in Madrid (1690-1720) | Hernanz Elvira, Jose Luis | Article in Journal | | 2014 |
| Documents concerning the oath of supremacy in early seventeenth-century Ireland | Ní Mhurchadha, Maighréad | Article in Journal | | 2010 |
| Documents from the State Papers concerning Miles McGrath | | Article in Journal | | 1958 |
| Documents of Irish interest in the Fondo Missioni of the Vatican Archives | | Article in Journal | | 1995 |
| Documents of the Irish colleges at Douai | | Article in Journal | | 1943 |
| Documents of the Irish Franciscan college at Prague | Jennings, Brendan | Article in Journal | | 1942 |
| Documents relating to the appointment of John Stafford as coadjutor to the bishop of Ferns, 1772 | Corish, Patrick J. | Article in Journal | | 1972 |
| Documents relating to the Irish College at Lille, 1634-c.1647 | | Article in Journal | | 2014 |
| Documents relating to Wexford friary and parish, 1733-98 | Ó Súilleabháin, Pádraig | Article in Journal | | 1965 |
| Doing good? Irish women, Catholicism and charity, 1852-1922 | Roddy, Sarah | Article in Book | | 2023 |
| Dom Columba Marmion : a biography | Tierney, Mark | Monograph or Collective Volume | Columba | 1994 |
| Dom Columba Marmion, 1858-1923 | O'Dea, Bernard | Article in Journal | | 1958 |
| Dom Columba Marmion, O. S. B. | Merten, Aubert | Article in Journal | | 1937 |
| Dom Vincent of Mount Melleray | Walsh, Kilian J. | Monograph or Collective Volume | Gill | 1962 |
| Dominic Collins : Irish martyr, Jesuit brother, 1566-1602 | Forristal, Desmond | Monograph or Collective Volume | Irish Messenger Publications | 1992 |
| Dominicans in Ireland, 1841-1845 | Fenning, Hugh | Article in Journal | | 1991 |
| Dominicans of Athenry : a chronology, 1241-1991 | Anonymous | Article in Book | | 1991 |
| Dominicans of Trim, 1683-1710 | Fenning, Hugh | Article in Journal | | 1961 |
| Dominick Bellew, 1745-1813 : parish priest of Dundalk and bishop of Killala | Hoban, Brendan | Article in Journal | | 1972 |
| Dominick Street : a Bellocian connection | Reynolds, Brian | Article in Journal | | 1991 |
| Don't ever tell : Kathy's story : a true story of a childhood destroyed by neglect and fear | O'Beirne, Kathy | Monograph or Collective Volume | Mainstream | 2005 |
| Donagh O'Daly O.S.M. 1600-c. 1664 - a forgotten Irish figure of the Counter-Reformation in Austria and Bohemia | Mooney, C. M. | Article in Journal | | 1979 |
| Donal Breen, Dean of Ferns (1588-1655) | Corish, Patrick J. | Article in Book | | 2007 |
| Dónall Ó Tuathail sagart na ráilte, 1880-1922 | Mac Giolla Domhnaigh, Gearóid | Article in Journal | | 1994 |
| Donegal and the outbreak of the Northern Ireland conflict, 1968-69 | Longwill, Edward | Article in Journal | | 2010 |
| Donegal priests in Scotland, 1829-1979 | Canning, B. J. (Bernard J.) | Article in Journal | | 1983 |
| Doneraile Catholic Church | Shine, Michael | Article in Journal | | 1997 |
| Douai College documents, 1639-1794 | | Monograph or Collective Volume | Catholic Record Society | 1972 |
| Dr Cullen's appointment to Armagh 1849 | Macaulay, Ambrose | Article in Journal | | 1980 |
| Dr Dermot O'Hurley | Gavin, Tadg | Monograph or Collective Volume | Catholic Truth Society | 1963 |
| Dr J.C. McQuaid and Eamon de Valera : insights on church and state | O'Neill, Thomas Patrick | Article in Journal | | 1992 |
| Dr James Donnelly, bishop of Clogher (1865-1893) and the ascendancy in Monaghan | Murnane, James H. | Article in Journal | | 1987 |
| Dr James Donnelly, bishop of Clogher (1865-1893) and the ascendancy in Monaghan. Part 2 | Murnane, James H. | Article in Journal | | 1988 |
| Dr James Gallagher, alumnus Kilmorensis:Bishop of Raphoe (1725-37) and (Kildare & Leighlin)1737-51) | Mac Murchaidh, Ciarán | Article in Journal | | 2004 |
| Dr James Louis O'Donnell (1737-1811), first bishop of Newfoundland | O'Connell, Philip | Article in Journal | | 1965 |
| Dr James MacDevitt and 'The Donegal Highlands' | Ó Saothraí, Séamus | Article in Journal | | 1978 |
| Dr James Magauran, bishop of Ardagh (1815-29) | Traynor, Owen | Article in Journal | | 1972 |
| Dr John Carpenter, archbishop of Dublin, 1760-1786 | Mac Giolla Phádraig, Brian | Article in Journal | | 1976 |
| Dr John Carpenter, archbishop of Dublin, 1760-86 | Mac Giolla Phádraig, B. | Article in Journal | | 1976 |
| Dr John F. McCaffrey : his life and work | Aspinwall, Bernard | Article in Journal | | 2002 |
| Dr John Gunson | O'Neill, Sally | Article in Journal | | 1988 |
| Dr John Kyne, Bishop of Meath, 1947-66 | French, Noel | Article in Journal | | 2018 |
| Dr Mannix | Brennan, Niall | Monograph or Collective Volume | Angus & Robertson | 1965 |
| Dr Nicholas Madgett's 'Constitutio ecclesiastica' | | Article in Journal | | 1976 |
| Dr Patrick McSwiney : president of the Irish College, Paris | Henchion, Richard | Article in Journal | | 1999 |
| Dr Patrick Murray, 1811-1882 | Kerr, Donal A. | Article in Journal | | 1982 |
| Dr Peter Flood : president of Maynooth, 1798-1803 | Flood, J. M. | Article in Journal | | 1948 |
| Dr Peter Flood : president of Maynooth, 1798-1803 | Masterson, M. J. | Article in Journal | | 1943 |
| Dr Plunket, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dr Russell and Newman's conversion | Tristram, Henry | Article in Journal | | 1945 |
| Dr Russell of Maynooth | Macaulay, Ambrose | Monograph or Collective Volume | Dartman, Longman and Todd | 1983 |
| Dr Terence P. Cunningham. (Obituary) | Mac An Ghallóglaigh, Domhnall | Article in Journal | | 1986 |
| Dr. Callan of Maynooth | McLaughlin, P. J. | Article in Journal | | 1936 |
| Dr. Croke, the Irish bishops and the Parnell crisis, 18 November 1890-21 April 1891 | Tierney, Mark | Article in Journal | | 1968 |
| Dr. James Donnelly : the early years | Ó Gallachair, Pádraig | Article in Journal | | 1984 |
| Dr. James Donnelly's letters to his Roman agent 1861-92 | | Article in Journal | | 1982 |
| Dr. James Donnelly, P.P. of Roslea (1857-65) | Mulligan, Patrick | Article in Journal | | 1983 |
| Dr. Plunkett, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dr. Richard Henebry | Stockley, Germaine | Article in Journal | | 1946 |
| Dr. Russell and the 'Dublin Review' | McLaughlin, P. J. | Article in Journal | | 1952 |
| Dr. Thomas Croke, archbishop of Cashel and Emly | Mehigan, P. D. | Article in Book | | 1942 |
| Drama in the courtroom, theater in the streets, Philadelphia's Irish riot of 1831 | Hoeber, Francis W. | Article in Journal | | 2001 |
| Drangan Church : a short history | Ó Gráda, Liam | Article in Book | | 1993 |
| Drawing lines on pages: remaking the Catholic parish maps of Ireland as a tidal public geography | Murphy, MichaelO'Mahony, Eoin | Article in Journal | | 2018 |
| Dream by the river : two centuries of St Louis Catholicism, 1766-1967 | Faherty, William Barnaby | Monograph or Collective Volume | Piraeus | 1973 |
| Drogheda 'Forty shilling freeholders' | Corcoran, Moira | Article in Journal | | 1998 |
| Drogheda churches: heraldry and memorial inscriptions | Bellew, Séamus | Article in Journal | | 2008 |
| Drogheda in 1912 - Place of Hope and Glory. | McCullen, John | Article in Journal | | 2012 |
| Drogheda in the 1950s: some memories | Mullen, Maura | Article in Journal | | 2012 |
| Dromahaire : story and pictures | Ó Duigneáin, Pronnsíos | Monograph or Collective Volume | Drumlin | 1990 |
| Dromore again in the melting pot 1766 | Kearns, Patrick | Article in Journal | | 1990 |
| Dublin : triumph and failure | Keane, Frank | Article in Book | | 1994 |
| Dublin diocesan archives | Curran, Michael | Article in Journal | | 1958 |
| Dublin diocesan archives - Hamilton papers (1) | Purcell, Mary | Article in Journal | | 1988 |
| Dublin diocesan archives : an introduction | Sheehy, David C. | Article in Journal | | 1987 |
| Dublin Diocesan Archives : Hamilton papers (2) | Hamilton, JohnPurcell, Mary | Article in Journal | | 1990 |
| Dublin Diocesan Archives : Hamilton Papers (4) | Purcell, Mary | Article in Journal | | 1993 |
| Dublin diocesan archives : Hamilton papers (4) | Purcell, Mary | Article in Journal | | 1993 |
| Dublin Diocesan Archives : Hamilton Papers (5) | Purcell, Mary | Article in Journal | | 1994 |
| Dublin diocesan archives : Hamilton papers (5) | Purcell, Mary | Article in Journal | | 1994 |
| Dublin Diocesan Archives : Hamilton Papers (6) | Purcell, Mary | Article in Journal | | 1995 |
| Dublin Diocesan Archives : Hamilton Papers (7) | Purcell, Mary | Article in Journal | | 1996 |
| Dublin Diocesan Archives : Hamilton Papers (8) | Purcell, Mary | Article in Journal | | 1997 |
| Dublin Diocesan Archives : Hamilton papers (9) | Purcell, Mary | Article in Journal | | 1998 |
| Dublin diocesan archives : Murray papers | Purcell, Mary | Article in Journal | | 1983 |
| Dublin Diocesan archives : Murray papers (4) | Purcell, Mary | Article in Journal | | 1984 |
| Dublin diocesan archives : Murray Papers (7) | Sheehy, David C. | Article in Journal | | 1987 |
| Dublin diocesan archives : Murray papers, 5 | Purcell, Mary | Article in Journal | | 1985 |
| Dublin imprints of Catholic interest 1770-82 | Fenning, Hugh | Article in Journal | | 2001 |
| Dublin imprints of Catholic interest 1783-1789 | Fenning, Hugh | Article in Journal | | 2003 |
| Dublin imprints of Catholic interest 1790-1795 | Fenning, Hugh | Article in Journal | | 2005 |
| Dublin imprints of Catholic interest 1796-9 | Fenning, Hugh | Article in Journal | | 2006 |
| Dublin imprints of Catholic interest 1800-09 | Fenning, Hugh | Article in Journal | | 2008 |
| Dublin imprints of Catholic interest : 1740-59 | Fenning, Hugh | Article in Journal | | 1999 |
| Dublin imprints of Catholic interest : 1760-69 | Fenning, Hugh | Article in Journal | | 2000 |
| Dublin imprints of Catholic interest : 1770-82 | Fenning, Hugh | Article in Journal | | 2001 |
| Dublin imprints of Catholic interest, 1810-1819 | | Article in Journal | | 2011 |
| Dublin priests at Charleston, South Carolina, in the eighteenth century | Madden, Richard C. | Article in Journal | | 1964 |
| Dublin's Catholic cathedrals II.- Saint Patrick's | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Irish Messenger Office | 1936 |
| Dublin's Churches of St Nicholas | O'Meara, Liam | Article in Journal | | 2010 |
| Dublin's Fitzwilliam Estate: a hidden landscape of discovery, Catholic agency and egalitarian suburban space | O'Kane, Finola | Article in Journal | | 2016 |
| Dublin's forgotten archbishop : Daniel Murray, 1768-1852 | Kerr, Donal A. | Article in Book | | 2000 |
| Dublin's Greek pro-cathedral | McCarthy, Michael (Michael Joseph), 1939-2010 | Article in Book | | 2000 |
| Dublin's pro-cathedral, 1812-1975 | Purcell, Mary | Monograph or Collective Volume | [s.n.] | 1975 |
| Dublin's turbulent priest : Cornelius Nary, 1658-1738 | Fagan, Patrick, 1922-2011 | Monograph or Collective Volume | Royal Irish Academy | 1991 |
| Dunbrody through the ages | Walsh, Thomas P. | Article in Journal | | 1976 |
| Dungiven to death in China | Collins, Neil | Article in Journal | | 2013 |
| Durrow review : a jubilee review to celebrate the Presentation Sisters' 50 years at Castledurrow in Laois | Anonymous | Monograph or Collective Volume | Presentation Sisters | 1981 |
| Eaglais na gcatatómaí | Standún, Pádraig | Monograph or Collective Volume | Cló Iar-Chonnachta | 2004 |
| Eaglaisigh Caitleaha agus polaitíocht an Lucht Oibre sna caogadaí san Astráil | Mac Aonghusa, Proinsias | Article in Book | | 1989 |
| Éamann Iognáid Rís, 1762-1844 | Ó Gadhra, Nollaig | Monograph or Collective Volume | An Sagart | 1996 |
| Éamann Rís, 1762-1844 : fear beannaithe, fáidh agus fuascailteoir | Ó Cearbhaill, S. E. | Article in Book | | 1996 |
| Éamonn Iognáid Rís | Ó Gadhra, Nollaig | Monograph or Collective Volume | Foilseachain Naisiunta Teo | 1977 |
| Earls and Wild Geese. The Irish experience in Europe, 1600-1750 | Mac Eiteagáin, Darren | Article in Journal | | 1992 |
| Early Catholic Americana : a list of books and other works by Catholic authors in the U.S., 1729-1830 | Parsons, Wilfrid | Monograph or Collective Volume | Macmillan | 1939 |
| Early Catholic journalism in Canada | Cronin, P. F. | Article in Journal | | 1935 |
| Early Catholic periodicals in England | Fletcher, J. R. | Article in Journal | | 1936 |
| Early days in Presentation College Bray, 1921-1933 | O'Brien, Malachy | Article in Journal | | 1990 |
| Early evidence of Irish immigration to Scotland : a note on a Catholic parish register | Collins, Brenda | Article in Journal | | 1984 |
| Early history of Carlow College, 1793-1943 | MacSuibhne, Peadar | Monograph or Collective Volume | Browne & Nolan | 1943 |
| Early Irish Jesuit education, II | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1941 |
| Early Irish Jesuit educators | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1940 |
| Early letters of John Farley (1861-1864) | McConville, Kieran
| Article in Journal | | 2013 |
| Early Modern English Catholicism : identity, memory and counter-Reformation | NA | Monograph or Collective Volume | Brill | 2017 |
| Early modern Ireland as a multiconfessional state | Gillespie, Raymond | Article in Book | | 2011 |
| Earthing the Eucharist | Newell, Ken | Article in Book | | 2012 |
| Eastwood House and the Moneybeg Demesne | Kavanagh, Myles | Article in Journal | | 2016 |
| Ecclesiastical law and the Reformation in Ireland | Osborough, W. N. (William Nial) | Article in Book | | 1992 |
| Ecclesiastical metropolitanism and the evolution of the catholic archdiocese of Toronto | Nicolson, Murray W. | Article in Journal | | 1982 |
| Economic growth, capital investment, and the Roman Catholic Church in nineteenth-century Ireland | Larkin, Emmet | Article in Journal | | 1967 |
| Ecumenism and Inter-Faith Relations | Power, Maria | Article in Book | Oxford University Press | 2023 |
| Edel Quinn, 1907-1944 | Forristal, Desmond | Monograph or Collective Volume | Dominican | 1994 |
| Edmond Byrne (1656-1723) archbishop of Dublin | Meagher, John | Article in Journal | | 1964 |
| Edmund Burke : Prophet against the tyranny of the politics of theory | O'Brien, Conor Cruise, 1917-2008 | Article in Book | | 2004 |
| Edmund Burke and Rome | Mahoney, T. H. D. | Article in Journal | | 1958 |
| Edmund Burke's Reflections on the coming revolution in Ireland | Conniff, James | Article in Journal | | 1986 |
| Edmund Campion | Waugh, Evelyn | Monograph or Collective Volume | Longmans | 1961 |
| Edmund Ignatius Rice and Theobald Mathew, O.F.M. Cap. | Augustine,OFM | Monograph or Collective Volume | Browne and Nolan | 1944 |
| Edmund Ignatius Rice, founder of the Irish Christian Brothers | Dargan, Pat | Article in Journal | | 1944 |
| Edmund Ignatius Rice, founder of the Irish Christian Brothers, 1762-1844 | Boylan, M. Eugene | Article in Journal | | 1944 |
| Edmund Murphy, Oliver Plunkett and the Popish Plot | Gibney, John, 1976- | Article in Journal | | 2004 |
| Edmund O'Reilly, archbishop of Armagh, 1657-1669 | Ó Fiaich, Tomás | Article in Book | | 1957 |
| Edmund Rice (1762-1844) | Mealy, Colm | Article in Book | | 2007 |
| Edmund Rice (1762-1844) : apostle of modernisation | Keogh, Dáire | Article in Journal | | 1996 |
| Edmund Rice - a timely restorer of faith and hope in Ireland | Kelleher, Daniel V. | Article in Book | | 1994 |
| Edmund Rice : the man and his time | Rushe, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1995 |
| Edmund Rice and Saint Teresa of Avila | Ó Cearbhaill, Seán | Article in Book | | 1994 |
| Edmund Rice and the Presentation Brothers | Feheney, J. M. | Article in Book | | 1996 |
| Edmund Rice, 1762-1844 | Keogh, Dáire | Monograph or Collective Volume | Four Courts | 1996 |
| Edmund Rice, his life and work | Anonymous | Article in Journal | | 1996 |
| Education and conflict in Northern Ireland : a guide to the literature | Dunn, Seamus | Monograph or Collective Volume | University of Ulster, Centre for the study of conflict | 1986 |
| Education and religion in Northern Ireland | Gallagher, A. M. | Monograph or Collective Volume | [s.n.] | 1989 |
| Education and schooling | Whitehead, Maurice ; Raftery, Deirdre ; McDermid, Jane | Article in Book | Oxford University Press | 2023 |
| Education and the Catholic church in the Irish Free State | Duggan, John E. | Article in Journal | | 2001 |
| Education together for a change : integrated education and community relations in Northern Ireland | Moffat, Chris | Monograph or Collective Volume | [s.n.] | 1993 |
| Education, identity and women religious, 1800-1950 : convents, classrooms and colleges | | Monograph or Collective Volume | Routledge | 2016 |
| Edward Boyd Barrett and the great O'Neill | Ó Conluain, Proinsias | Article in Journal | | 1991 |
| Edward Cannon, 1739-1814 | Cannon, Robert | Article in Journal | | 1935 |
| Edward Caswall, Newman and the people of Catholic Ireland | Fenlon, Dermot | Article in Book | | 2006 |
| Edward Francis Collins, 1807-1872 – Hull's Catholic Victorian crusader | Gibbons, Jo | Article in Book | | 1999 |
| Edward Hay, historian of 1798 | Ó hOgartaigh, Margaret | Monograph or Collective Volume | The History Press | 2010 |
| Edward Hay, styled Mr Secretary Hay : Catholic politics, 1792-1822 | Whelan, Margaret | Thesis | | 1991 |
| Edward J. Byrne 1872-1941 : the forgotten archbishop of Dublin | Morrissey, Thomas J. | Monograph or Collective Volume | Columba Press | 2010 |
| Edward Maginn : a bishop for all seasons | Beattie, Sean | Article in Journal | | 1996 |
| Edward Martyn : an Irish Catholic eccentric | MacGreevy, Thomas | Article in Journal | | 1943 |
| Edward Martyn : the wealthy pauper | Scully, Séamus | Article in Journal | | 1992 |
| Edward Martyn and the founding of Dublin's Palestrina Choir | Nolan, J. C. M. | Article in Journal | | 2000 |
| Edward Thomas O'Dwyer | Rushe, John | Article in Journal | | 1981 |
| Église et état : 1960-1990 | Arnal-Corish, Marguerite | Article in Journal | | 1995 |
| Eighteenth century St. Patrick's and the Jesuits | Burke, Billy | Article in Journal | | 1977 |
| El colegio de los irlandeses | Arnáiz, Mariá JoséSancho, José Luis, 1962- | Monograph or Collective Volume | Fundación Colegio del Rey | 1985 |
| El Floreto; fonte storica sconosciuta di Maro da Libsona a del Wadding | Quaglia, Armando | Article in Journal | | 1957 |
| Élisabeth I d'Angleterre et les Catholiques | Antheunis, Louis | Article in Journal | | 1954 |
| Elizabethan England, Wales, and Ireland | Gibbons, Katy | Article in Book | | 2023 |
| Elizebethan recusant prose, 1559-1582 | Evennett, H. O.Southern, A. C. | Monograph or Collective Volume | Sands | 1950 |
| Elphin and Ross seek Franciscans as bishops, 1649-1651 | Millett, Benignus | Article in Journal | | 1993 |
| Embodied ideals and realities : Irish nuns and Irish womanhood, 1930s-1960s | McKenna, Yvonne | Article in Journal | | 2006 |
| Emigrant and emigré : George Thomas Plunkett, bishop of Aillfinne (1814-1827) | McGreevey, John Joseph | Monograph or Collective Volume | The author | 1992 |
| Emigrant Irish secular priests in America | Smith, William L. | Article in Journal | | 2000 |
| Employment and religion in Belfast 1901-1971 | Hepburn, Anthony C. | Monograph or Collective Volume | Fair Employment Agency for Northern Ireland | 1982 |
| Employment differentials in Northern Ireland and job discrimination : a critique | Compton, P. | Article in Book | | 1991 |
| Employment of Catholics in the public service in Ireland, 1859-1921 : a broad overview | McElvoy, Gerald | Article in Book | | 1995 |
| En jeux sociaux et relations église-état en Irlande | Brennan, Paul | Article in Journal | | 1987 |
| Encyclopaedia of Ireland | | Monograph or Collective Volume | | 1968 |
| Endowed schooling in Ireland : a history of deceit? | Walsh, Brendan | Article in Journal | | 2023 |
| Endurance and emergence : Catholics in Ireland in the eighteenth century | | Monograph or Collective Volume | Irish Academic Press | 1990 |
| Enforcing the English Reformation in Ireland : clerical resistance and political conflict in the Diocese of Dublin, 1534-1590 | Murray, James | Monograph or Collective Volume | Cambridge University Press | 2009 |
| England : the famine and the church in England | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| England and Ireland since 1800 | O'Farrell, Patrick James | Monograph or Collective Volume | Oxford University Press | 1975 |
| England and the Italian war of 1859 | Simpson, F. A. | Article in Journal | | 1962 |
| England's disgrace? J.S. Mill and the Irish question | Kinzer, Bruce L., 1948- | Monograph or Collective Volume | University of Toronto Press | 2001 |
| England, Ireland and Rome | Fitzwalter, Richard | Article in Journal | | 1913 |
| England, Ireland, and Rome, 1847-1848 | Kerr, Donal A. | Article in Book | | 1989 |
| England, Ireland, Scotland, and Wales : documents, 1541-1562 | Lukács, LászlóMcCoog, Thomas M. | Monograph or Collective Volume | Institutum Historicum Societatis Iesu | 2000 |
| England, Ireland, Scotland, Wales : the Christian Church, 1900-2000 | Robbins, Keith | Monograph or Collective Volume | Oxford University Press | 2008 |
| English and Irish books and convents in the seventeenth and eighteenth centuries : the link with the Low Countries | Blom, F. | Article in Journal | | 2002 |
| English and Irish catholics in Northumberland, c.1745-c.1860 | Doherty, Stephen | Thesis | | 1987 |
| English Catholic Attitudes to Irish Catholics | Gilley, Sheridan | Article in Journal | | 2009 |
| English Catholic attitudes to Irish Catholics | Gilley, Sheridan | Article in Journal | | 2009 |
| English Catholic attitudes to Irish Catholics | Gilley, Sheridan | Article in Book | | 2011 |
| English Catholic charity and the Irish poor in London (1700-1870) | Gilley, Sheridan | Article in Journal | | 1972 |
| English Catholic landlords in early modern Ireland - the Tasburghs and Cong Abbey Estate | Bergin, John | Article in Journal | | 2022 |
| English Catholics and the education of the poor, 1847-1902 | Tenbus, Eric G. | Monograph or Collective Volume | Pickering & Chatto | 2010 |
| English catholics and the Irish question, 1870-1893 | O'Callaghan, Edward Patrick | Thesis | | 1984 |
| English litanies of the early 18th century | Hennig, John | Article in Journal | | 1955 |
| English opinion | White, Terence De Vere | Article in Book | | 1949 |
| English recusant controversy in Spanish print culture: dissemination, popularisation, fictionalisation | Sáez-Hidalgo, Ana | Article in Book | | 2018 |
| English Roman Catholics and the Irish Free State | Greene, Thomas R. | Article in Journal | | 1984 |
| English-Irish conflict in the north-east of England | Neal, Frank | Article in Book | | 1993 |
| Ennis and Longford | Ó Dálaigh, Brian | Article in Book | | 2013 |
| Ennis Friary:peaceful; present, bloody past | Rainsford, John | Article in Journal | | 2011 |
| Eoghan Ó hAirt, 1562-1603 | Ó Claidhimh, Liam | Article in Journal | | 1961 |
| Eoin Baiste Mac Sleighne, easpag (1693-1712), agus patrún ar an léann Gaelach | Ó Conchúir, Breandán | Article in Book | | 1983 |
| Episcopal comments on the Decreta pro recto regimine ecclesiarum hiberniae, 1635-36 | | Article in Journal | | 1964 |
| Episcopal decision-making in Ireland | Keogh, Dermot | Article in Book | | 1992 |
| Episcopal edicts of the diocese of Ossory in the eighteenth century, 2 : the edicts of John Thomas Troy (1739-1823) | Ó Fearghail, Fearghus | Article in Journal | | 2008 |
| Episcopal edicts of the Diocese of Ossory in the eighteenth century, I : the edicts of Thomas Burke (1709-1776). | Ó Fearghail, Fearghus | Article in Journal | | 2006 |
| Episcopal Leaders and Leadership | Doyle, Peter | Article in Book | Oxford University Press | 2023 |
| Episcopal visitations of the dioceses of Cloyne and Ross, 1785-1828 [with index] | Derr, Eric A. | Article in Journal | | 2013 |
| Episcopal warriors in the British wars of religion | Hibbard, Caroline M., 1942- | Article in Book | | 1991 |
| Equality of opportunity in education in Northern Ireland | Livingstone, J. A. | Article in Book | | 1987 |
| Era of emancipation : British government of Ireland, 1812-1830 | Jenkins, Brian A. | Monograph or Collective Volume | McGill-Queen's University Press | 1988 |
| Essays on ethnic history | Galush, William | Article in Journal | | 1978 |
| Establishing a confessional Ireland, 1641–1691 | Armstrong, Robert | Article in Book | | 2018 |
| Establishing mission networks in the early modern catholic church: ireland, rome and the west indies, 1600-1669 | Binasco, Matteo | Thesis | | 2013 |
| Ethnic catholicism and craft unionism in Worcester, Massachusetts, 1887-1920 : a mixed story | Cohen, Bruce | Article in Journal | | 2004 |
| Ethnic masculinities in Australian boys' schools : Scots and Irish secondary schools in late nineteenth-century Australia | Brice, Ian D. | Article in Journal | | 2001 |
| Ethnic tensions, episcopal leadership and the emergence of the twentieth century American Catholic church : the Cleveland experience | Leonard, Henry B. | Article in Journal | | 1985 |
| Ethnicity and individuality : Irish migrants in London, 1980s-1990s | Kells, Mary | Thesis | | |
| Ethnicity as intercultural dialogue : 18th- and 19th-century Newfoundland | Keough, Willeen | Article in Journal | | 2005 |
| Ethnicity, politics and murder : the hanging of James P. Donnelly | Shaw, Douglas | Article in Journal | | 1991 |
| Ethos and education in Ireland | Norman, James | Monograph or Collective Volume | Lang | 2003 |
| Eucharistic Congress Dublin 1932 | Hasson, Seamus | Article in Journal | | 2012 |
| Eucharistic Congress June 1932 | Ní Aonghusa, Eilín | Article in Journal | | 2008 |
| Euntes Docete Omnes Gentes : emigrant Irish secular priests in America | Smith, William L. | Article in Journal | | 2000 |
| European Mercantile Networks | Monod, Paul | Article in Book | Oxford University Press | 2023 |
| Evangelical and Roman Catholic missions to the Irish in London, 1830-70 | Gilley, Sheridan | Thesis | | 1970 |
| Evangelicalism and national identity in Ulster, 1921-1998 | Mitchel, Patrick | Monograph or Collective Volume | Oxford University Press | 2003 |
| Evangelicalism, the Church of Ireland and the anti-Catholicism in the life and thought of Rev. Tresham Dames Gregg (1800-81) | Connell, Paul. M. | Thesis | | 2007 |
| Evangelising the faithful : Edmund Rice and the reformation of nineteenth-century Irish Catholicism | Keogh, Dáire | Article in Book | Columba | 2012 |
| Ever so holy: girls, mothers and Catholicism in Irish women's life-writings, 1850-1950 | Delay, Cara | Article in Book | | 2013 |
| Every Quarter of the World': Catholics in the British Empire | Bellenger, Dominic Aidan | Article in Book | Oxford University Press | 2023 |
| Evil literature : banning the News of the World in Ireland | Rafter, Kevin | Article in Journal | | 2013 |
| Excellentissimi Sanctorum Hibernie : Irish saints' lives in Austrian legendaries | Ó Riain, Diarmuid | Article in Book | | 2015 |
| Exile in Erin : a confederate chaplain's story | Faherty, William Barnaby | Monograph or Collective Volume | Missouri Historical Society Press | 2002 |
| Exile Movement: Male Institutions, 1568-1640 | O'Connor, Thomas | Article in Book | | 2023 |
| Expecting no recompense on this side of the grave : the Irishmen of the papal army in Italy in 1860 | O'Driscoll, Florry | Article in Book | | 2015 |
| Explaining parochial and diocesan boundaries | Cullen, Seamus | Article in Book | | 1999 |
| Exploring the post-release experience of former Irish Industrial School “inmates” | Pembroke, Sinead | Article in Journal | | 2017 |
| Exploring the post-release experience of former Irish Industrial School “inmates” | Pembroke, Sinead | Article in Journal | | 2017 |
| Expressions of faith : Ulster's church heritage | Oram, Richard D. | Monograph or Collective Volume | Colourpoint | 2001 |
| Extracts from Father Clare's annotations to the conformity rolls | Chamney, Anne R. | Article in Journal | | 2001 |
| Extracts from Meath priests' wills 1658-1782 | Rice, Gerard | Article in Journal | | 1967 |
| Extracts from Roman Catholic clergy lists, 1704 to 1800 | Flatman, Richard | Article in Journal | | 2009 |
| Extracts from some issues of 'Archivium Hibernicum' and 'Collectanea Hibernica' concerning Killala diocesan affairs up to 1800 | MacHale, Edward | Article in Journal | | 1989 |
| Factory and workshop legislation and convent laundries, 1895-1907: campaigning for a Catholic exception | Harrison, Bridget | Article in Journal | | 2021 |
| Facts and figures of the Belfast pogrom, 1920-1922 | Kenna, G. B. | Monograph or Collective Volume | O'Connell Pub. Co. | 1922 |
| Faith and fatherland : the 'Irish News', the Catholic hierarchy and the management of dissidents | Buckley, Pat | Monograph or Collective Volume | Belfast Historical and Educational Society | 1991 |
| Faith and fatherland : the conflict between Catholic action and Irish nationalism before the first world war | Dunleavy, John | Article in Journal | | 1989 |
| Faith and fatherland? The Ancient Order of Hibernians, northern nationalism and the partition of Ireland | O'Donoghue, Martin | Article in Journal | | 2022 |
| Faith and fervour : religion and nationality in Ulster | Morrow, Duncan | Article in Book | | 1994 |
| Faith and patronage : the political career of Flaithrí Ó Maolchonaire, c.1560-1629 | Hazard, Benjamin | Monograph or Collective Volume | Irish Academic Press | 2009 |
| Faith and politics in the Northern conflict | Anonymous | Article in Journal | | 1984 |
| Faith and the nation education and religious identity in the Republic of Ireland | Williams, Kevin | Article in Journal | | 1999 |
| Faith and the nation : education and religious identity in the Republic of Ireland | Williams, Kevin | Article in Journal | | 1999 |
| Faith in Ireland, 1600-2000 | Elliott, Marianne | Article in Book | | 2014 |
| Faith of our fathers - evergreen memories | Gorman, Liam | Article in Journal | | 1999 |
| Faith of our fathers : the Gaelic aristocracy in Co. Offaly and the counter-reformation | Lyttleton, James | Article in Book | | 2009 |
| Faith or fatherland; the conflict between Catholic action and Irish nationalism before the First World War | Dunleavy, John | Article in Journal | | 1989 |
| Faith, culture and sovereignty : Irish nationality and its development, 1558-1625 | Caball, Marc | Article in Book | | 1998 |
| Faith, Famine and Fenianism : Paul Cullen and the Irish emigrant world | Moran, Gerard | Article in Book | | 2011 |
| Faith, nature, and science in the works of Canon Sheehan | O'Leary, Don | Article in Journal | | 2013 |
| Fall from grace | Broderick, Joe | Monograph or Collective Volume | Brandon | 1992 |
| Family history research in Co. Kildare | Reid, Noel | Article in Journal | | 1990 |
| Family letters of Robert Haly, S.J., 1838-68 | Laheen, Kevin A. | Article in Journal | | 2001 |
| Family's four nuns and a priest | Murphy, Hilary | Article in Journal | | 2008 |
| Famine - bliain an áir | Coughlan, A. J. | Article in Journal | | 2013 |
| Famine Irish and the American Racial State | O’Neill, Peter D. | Monograph or Collective Volume | Routledge | 2017 |
| Fantastic Mass Rocks and where to find them | McCormick, Cerys | Article in Journal | | 2019 |
| Farney, Carrickmacross and the Patrician Brothers | Nolan, Cuthbert | Monograph or Collective Volume | Patrician Brothers | 1996 |
| Fat god, thin god | Kennedy, James | Monograph or Collective Volume | Mercier Press | 2002 |
| Father Bernard's register and the Irish militia in Essex | Quinlivan, Patrick | Article in Journal | | 1973 |
| Father Boyce, Laly Morgan and Sir Walter Scott : a study in intertextuality and Catholic polemics | Maume, Patrick | Article in Book | | 2005 |
| Father Browne : a life in pictures | O'Donnell, E. E. | Monograph or Collective Volume | Wolfhound Press | 1994 |
| Father Charles of Mount Argus | Christopher, Fr. | Monograph or Collective Volume | Gill | 1955 |
| Father Christopher Cusack and the Irish College of Douai, 1594-1624 | Brady, John, d.1963 | Article in Book | | 1944 |
| Father Christopher Hollywood, S.J. 1559-1626 | Corboy, James | Article in Journal | | 1944 |
| Father David Fitzgerald | French, Johnny | Article in Journal | | 2010 |
| Father David Galwey, SJ (1579-1634) | Corboy, James | Article in Journal | | 1944 |
| Father Dominic and Newman | Edmund, Fr. | Article in Journal | | 1945 |
| Father Edmond Deane (1647-1717) | McGovern, Patrick | Article in Journal | | 1959 |
| Father Edward Francis Pigot, S. J. | O'Connell, D. J. K. | Article in Journal | | 1952 |
| Father Francis Nugent, founder of the Irish Capuchins | Bieler, Ludwig | Article in Journal | | 1948 |
| Father Francis Patrick Duffy : 'A very Irish, very Catholic, very American person' | Shelley, Thomas J. | Article in Journal | | 2004 |
| Father Gentili : priest and missionary | MacHugh, James | Monograph or Collective Volume | Clonmore & Reynolds | 1958 |
| Father Gentili, 1801-48 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1948 |
| Father Gioacchino Ventura and Daniel O'Connell's funeral oration | Belletti, Alberto | Article in Book | | 2014 |
| Father Hand (1807-46) | Purcell, W. E. | Article in Journal | | 1942 |
| Father Henry Fitzsimon, S. J., 1566-1643 | Corboy, James | Article in Journal | | 1943 |
| Father Hugh O'Donnell, first parish priest of Belfast, 1772-1812 | Rogers, Patrick | Article in Book | | 1949 |
| Father James Archer, S. J., 1550-1625(?) | Corboy, James | Article in Journal | | 1944 |
| Father James Coigley | Ó Muirí, Réamonn | Article in Book | | 1997 |
| Father James Coombes [Obituary] | Walsh, Pat | Article in Journal | | 2000 |
| Father James Dixon and the 1798 Wexford rising | Waldersee, James | Article in Journal | | 1970 |
| Father James Keelan | Brady, John, d.1963 | Article in Journal | | 1958 |
| Father James Quigley : priest of Armagh and United Irishman | McEvoy, Brendan | Article in Journal | | 1970 |
| Father Jeremiah J. Callaghan : Butte's first Irish priest | Prodgers, Jeanette | Article in Journal | | 1984 |
| Father Jeremiah O'Callaghan, a man of principle, opponent of the Gombeen Men | Hyland, C. P. (Cal) | Article in Journal | | 1999 |
| Father Jeremiah O'Callaghan, a man of principle, opponent of the Gombeen men | Hyland, C. P. (Cal) | Article in Journal | | 1999 |
| Father John Austin, S. J. (1717-1784) | Rahilly, Alfred | Article in Journal | | 1939 |
| Father John Blowick - from memories to a memorial | Spicer, Willie | Article in Journal | | 2009 |
| Father John Christopher Drumgoole | Ó Finn, Michael | Article in Journal | | 1971 |
| Father John Colgan and the Louvain school | Mooney, Canice | Article in Journal | | 1958 |
| Father John Colgan, O.F.M., 1592-1658 : essays in commemoration of the third century of his death | | Monograph or Collective Volume | | 1959 |
| Father John Creagh in the Kimberleys | Boland, S. J. | Article in Journal | | 1988 |
| Father John Fitzsimmons (1806-1869) | S, P. | Article in Journal | | 2006 |
| Father John Hayes, founder of Muintir na Tire, 'People of the Land' | Rynne, Stephen | Monograph or Collective Volume | Clonmore & Reynolds|Burns & Oates | 1960 |
| Father John Hennessy, P.P. : 'Protestant priest' | Hyland, Cecil | Article in Journal | | 1988 |
| Father John McElroy SJ. : 'First' Catholic chaplain of the United States Army | Connolly, John | Article in Journal | | 2011 |
| Father John Murphy : famine priest | Reilly, A. J. | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| Father John Spratt : beloved of Dublin's poor | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1972 |
| Father John Sullivan S.J. | Casey, Gerard | Article in Journal | | 2018 |
| Father John Sullivan, S. J. | MacGrath, Fergal | Monograph or Collective Volume | Longmans | 1952 |
| Father John Thayer of New England | Purcell, Richard J. | Article in Journal | | 1942 |
| Father Joseph Darlington, S. J., 1850-1939 | Howley, John | Article in Journal | | 1939 |
| Father Kennedy : patriot priest of Boolavogue | Kennedy, Patrick | Monograph or Collective Volume | Veritas | 1988 |
| Father Larry Murray | Mac An tSagairt, Liam | Monograph or Collective Volume | Eigse Oirialla | 1983 |
| Father Luke Wadding : commemorative volume | | Monograph or Collective Volume | | 1957 |
| Father Luke Wadding and St Isidore's College, Rome : biographical and historical note and documents | Cleary, Gregory | Monograph or Collective Volume | | 1925 |
| Father Luke Wadding and the Irish nation | Corish, Patrick J. | Article in Journal | | 1957 |
| Father Luke Wadding's work for the education of the Irish clergy | Cleary, Gregory | Article in Book | | 1937 |
| Father Mathew : a biography | Maguire, J. F.Rogers, Patrick | Article in Journal | | 1939 |
| Father Mathew : apostle of modernisation | Kearney, H. F. | Article in Book | | 1979 |
| Father Mathew : apostle of temperance in south west Clare | Murphy, Ignatius | Article in Journal | | 1985 |
| Father Mathew : temperance and Irish identity | Townend, Paul A. | Monograph or Collective Volume | Irish Academic Press | 2002 |
| Father Mathew in Ardmore | Kerrigan, Colm | Article in Journal | | 1992 |
| Father Mathew in Limerick | Kerrigan, Colm | Article in Journal | | 1985 |
| Father Mathew's disciples : American Catholic support for temperance, 1840-1920 | Quinn, John F. | Article in Journal | | 1996 |
| Father McDonnell's visit to Derrynane in 1833 | Ó Súilleabháin, Pádraig | Article in Journal | | 1973 |
| Father McDyer of Glencolmcille : an autobiography | McDyer, James | Monograph or Collective Volume | Brandon | 1982 |
| Father Michael Comyn : parish priest of Kilkee and Doonbeg, 1798-1854 | Murphy, Ignatius | Article in Journal | | 1986 |
| Father Michael Conway in Kilfian parish 1826-1839 | MacHale, E. | Article in Journal | | 1993 |
| Father Michael Maher | Ellis, William | Article in Journal | | 1988 |
| Father Nicholas Kearns and state prisoners | Meagher, John | Article in Journal | | 1955 |
| Father Nicholas Sheehy (c.1728-1766) | Power, Thomas P. | Article in Book | | 1998 |
| Father Nugent of Liverpool | Bennet, John | Monograph or Collective Volume | [s.n.] | 1949 |
| Father O Finachty's miracles | Faulkner, Anselm | Article in Journal | | 1965 |
| Father Pat Walsh: At the threshold of a new beginning | Keohane, DeeKeohane, Mike | Article in Journal | | 2009 |
| Father Patrick Lavelle : the rise and fall of an Irish nationalist, 1825-1886, a radical priest in Mayo | Moran, Gerard | Monograph or Collective Volume | Four Courts | 1994 |
| Father Patrick Peyton CSC and family prayer | Gribble, Richard | Article in Book | | 2013 |
| Father Patrick Short, SS, CC | Ó Muirí, Réamonn | Article in Journal | | 1998 |
| Father Paul O'Sullivan OP, EDM (1871-1958) | Casey, Thomas | Article in Book | | 2015 |
| Father Paul Sherlock, S. J. (1595-1646) | Kelly, K. | Article in Journal | | 1976 |
| Father Paul Walsh (19th June 1885 - 18th June, 1941) | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1943 |
| Father Paul Walsh : the scholar | Shaw, Francis | Article in Journal | | 1941 |
| Father Paul Walsh, D.Litt | Brady, John, d.1963 | Article in Journal | | 1941 |
| Father Peter B. Bradley and Irish Franciscan chaplains in World Wars I and II | Fennessy, Ignatius | Article in Journal | | 2003 |
| Father Peter C. Yorke : Irish-American leader | Foley, Timothy P. (Tadhg)Walsh, James P. | Article in Journal | | 1974 |
| Father Peter Daly (c. 1788-1868) | Mitchell, James | Article in Journal | | 1983 |
| Father Peter Wadding, S.J. : chancellor of the University of Prague, 1629-41 | O'Dea, Paul | Article in Journal | | 1941 |
| Father T. Corcoran, S. J. born 1872. Professor of education in University College, Dublin, 1909-42 | Gleeson, Dermot F. | Article in Journal | | 1943 |
| Father Theobald Mathew | Lucey, Cornelius | Article in Journal | | 1956 |
| Father Theobald Mathew (1790-1856) | Fintan, Fr. | Article in Journal | | 1940 |
| Father Theobald Mathew : apostle of temperance | Rogers, Patrick | Monograph or Collective Volume | Browne and Nolan | 1943 |
| Father Theobald Mathew, apostle of temperance | Lysaght, Moira | Article in Journal | | 1983 |
| Father Theobald Mathew, O. M. Cap. : a centenary memoir | Rogers, Patrick | Article in Journal | | 1937 |
| Father Theobald Mathew, O.M. Cap., as seen by his contemporaries | | Article in Journal | | 1940 |
| Father Thomas A. Finlay, S. J., 1848-1940 | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Thomas Hore and Wexford, Iowa | Schmitz, Kenneth P. | Article in Journal | | 1975 |
| Father Thomas Philip Donnelly (13 March 1920 - 11 March 2013) | Lynch, Gerard | Article in Journal | | 2013 |
| Father Thomas Stanislaus Power CM, CF : a Vincentian with the ANZAC in World War I | Hagerty, James | Article in Book | | 2015 |
| Father Tim | McAuliffe, Harold J. | Monograph or Collective Volume | Bruce Publishing Co. | 1944 |
| Father Tom - the Land League priest | De Vál, Seamus S. | Article in Journal | | 1978 |
| Father Tom : an authorised portrait of Cardinal Tomás Ó Fiaich | Fitzgerald, B. | Monograph or Collective Volume | Fount | 1990 |
| Father Tom Burke, O.P., 1830-1883 | Taheny, Luke J. | Article in Book | | 1991 |
| Father Tom Finlay | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Tom Maguire : polemicist, popular preacher and patriot, 1792-1847 | McGovern, Raymond | Article in Journal | | 1971 |
| Father Tom Maguire and the Clare election | Brady, Patrick | Article in Journal | | 1958 |
| Father Vincent McNabb, O. P. | Delany, Bernard | Article in Journal | | 1943 |
| Father William Barry : priest and novelist | Gilley, Sheridan | Article in Journal | | 1998 |
| Father William Mason Walsh and Governor D'Arcy 1871-6 | Walsh, Edward | Article in Journal | | 2006 |
| Father William Phelan : an Irish trouble-maker in Arichat | Wagg, Phyllis C. | Article in Journal | | 1986 |
| Father Yorke on Father O'Growney | Yorke, Peter | Article in Journal | | 1964 |
| Favourers, intercessors and patrons : why the Irish saints mattered so much to the Irish Franciscans | McCafferty, John | Article in Book | | 2015 |
| Fear an leabhair : Pádraig Ó Fiannachta | Ó Héalaí, Pádraig | Article in Book | Roinn na Sean-Gaeilge, Coláiste Phádraig, Maigh Nuad | 1994 |
| Federalist, social radical and anti-sectarian : Thaddeus O'Malley (1798-1877) | D'Arcy, Fergus A., 1943- | Article in Book | | 1998 |
| Feeble References: Catholic Material Culture | Richardson, Carol M. | Article in Book | Oxford University Press | 2023 |
| Fenianism as a global phenomenon : Thomas O'Malley Baines, papal soldier and Fenian convict | Maume, Patrick | Article in Book | | 2006 |
| Fenians and Ribbonmen : the development of Republican politics in east Tyrone | McCluskey, Fergal | Monograph or Collective Volume | Manchester University Press | 2011 |
| Ferns | Furlong, Nicholas | Article in Book | | 1999 |
| Ferns Diocesan Youth Service | Percival, Hazel | Article in Book | | 1999 |
| Ferris's in Coleraine | Langdale, Eileen | Article in Journal | | 2013 |
| Few, uncooperative, and endangered: the activity of the Irish Catholic priests in the West Indies of the seventeenth century, 1638-1668 | Binasco, Matteo | Article in Book | | 2010 |
| Fifty voices : a report from Bellinter | O'Kelly, Kevin | Article in Book | | 1986 |
| Fifty years of MSC mission, 1952-2002 | Mac Carthaigh, Donncha | Monograph or Collective Volume | MSC | 2002 |
| Filí agus cléir san ochtú haois déag | Heussaff, Anna | Monograph or Collective Volume | An Clóchomhar | 1992 |
| Financial mismanagement at the Irish College, 1772–98 | Korten, Christopher | Article in Book | | 2018 |
| Fire in Wicklow Presbytery, 1928 | Fagan, Ben | Article in Journal | | 2015 |
| First rector of the Catholic University of America | Canning, B. J. (Bernard J.) | Article in Journal | | 1984 |
| First rural parish to get an organ | Power, John | Article in Journal | | 2010 |
| Fitzpatrick's Boston, 1846-1866 : John Bernard Fitzpatrick, third bishop of Boston | O'Connor, Thomas H. | Monograph or Collective Volume | Northeastern UP | 1984 |
| Flaithrí Ó Maolchonaire and the Red Hand of Ulster | Hazard, Benjamin | Article in Journal | | 2010 |
| Flaithrí, Firbisigh and Maoilechlainn : three Uí Mhaoil Chonaire brothers in the late sixteenth and early seventeenth centuries | Hazard, Benjamin | Article in Book | | 2015 |
| Florence Conry, archbishop of Tuam | Jennings, Brendan | Article in Journal | | 1949 |
| Florence Conry, Archbishop of Tuam, 1608–1629 | Neary, J. | Article in Journal | | 1911 |
| Florence Conry, Hugh de Burgo, Luke Wadding and Jansenism | Ceyssens, Lucien | Article in Book | | 1957 |
| Florence Conry, the Flight of the Earls, and native-Catholic militancy | Casway, Jerrold | Article in Journal | | 2011 |
| Football and sectarianism in Glasgow during the 1920s and 1930s | Davies, Andrew, 1962 Feb. 8- | Article in Journal | | 2006 |
| Footprints of Fr. Theobald Mathew, apostle of temperance | Augustine,OFM | Monograph or Collective Volume | Gill | 1947 |
| For faith and fortune : the education of Catholic immigrants in Detroit, 1805-1925 | Vinyard, Jo Ellen | Monograph or Collective Volume | University of Illinois Press | 1998 |
| For God and Ireland : the fight for moral superiority in Ireland, 1922-1932 | McCabe, Michael P., 1977- | Monograph or Collective Volume | Irish Academic Press | 2012 |
| For parliament Malachy : Malachy Duggan, parish priest of Moyarta and Kilballyowen, c.1780-1849 | Murphy, Ignatius | Article in Journal | | 1986 |
| For the Pope and Rome: Irish Catholic soldiers of the Papal Battalion of St. Patrick in Italy in 1860 | O’Driscoll, Florry | Article in Book | | 2019 |
| Forgotten by history : the life and times of John Lanigan, D.D., D.C.L., D.S.S., priest, professor and historian | Feehan, James A. | Article in Journal | | 2005 |
| Forkhill protestants and Forkhill catholics, 1787-1858 | Madden, Kyla, 1974- | Monograph or Collective Volume | Liverpool University Press | 2005 |
| Form and function in nineteenth-century literature : the second reformation movement and the dialogue poems of Dáibhí de Barra (1757/8–1851) | Ní Shiadhail, Niamh | Article in Journal | | 2016 |
| Forming Catholic Communities: Irish, Scots and English College networks in Europe, 1568–1918 | | Monograph or Collective Volume | BRILL | 2018 |
| Forum on sectarianism | Foster, John Wilson | Article in Journal | | 1989 |
| Found : a great speech by Daniel O'Connell | Griffith, Francis | Article in Journal | | 1968 |
| Four Claddagh churches, 1488, 1669, 1800-1815, 1891 | Anonymous | Article in Book | | 1991 |
| Four old Queen's County parishes | Hyland, Jackie | Article in Journal | | 1992 |
| Four Victorian weddings and a funeral | Comerford, Patrick | Article in Book | | 2019 |
| Fr Arthur O'Leary : a Capuchin of Blackamoor Lane | Walsh, T. J. | Article in Journal | | 1948 |
| Fr Benjamin Joseph Braughall : the saintly pilgrim priest who was curate at Raheen for ten years | O'Leary, Edward, Rev., 1844-1924 | Article in Journal | | 2016 |
| Fr Bernard Murphy of Termonmagurk, 1832-97 | Bradley, John, Rev. | Article in Journal | | 1988 |
| Fr Browne, SJ, photographer | Myers, Kevin | Article in Journal | | 1994 |
| Fr Daniel Hickey, Kilmacud curate and World War One chaplain | Sobolewski, Peter | Article in Journal | | 2020 |
| Fr David Humphreys and new Tipperary | Marnane, Denis G. | Article in Book | | 1985 |
| Fr Edward Campion 'The Practical Patriot' | Cocoman, Noel | Article in Journal | | 2024 |
| Fr Harry Bohan pays tribute to his friend Fr. Tony King on his 40th anniversary as a priest | Bohan, Harry | Article in Journal | | 2003 |
| Fr James Cullen, Founder of the Pioneer Total Abstinence Association | McDarby, John | Article in Journal | | 2016 |
| Fr John Conmee : a portrait of the rector | Murray, Patrick | Article in Journal | | 1985 |
| Fr John Early : American Jesuit educator | Varga, Nicholas | Article in Journal | | 1986 |
| Fr John F. Greene (1904-1973 PP Clonbroney | MacNerney, James P. | Article in Journal | | 2007 |
| Fr John Fahey (1883-1959): Celebrated Tipperary-Born Great War Australian Army Chaplain | Cusack, Danny | Article in Journal | | 2024 |
| Fr John Farrelly, doctor of the Sorbonne (1657-1736) | Swords, Liam | Article in Journal | | 1998 |
| Fr John Hassan : a forgotten poet | Hasson, Seamus | Article in Journal | | 1988 |
| Fr John Joseph Kennedy DSO Republican and Imperial War Hero | Ó Cinnéide, Lorcán | Article in Journal | | 2023 |
| Fr John Murphy (Boolavogue) monument | Keogh, John | Article in Journal | | 1986 |
| Fr John Power - fact and folklore | Daly, Eugene | Article in Journal | | 2003 |
| Fr John Waldron, Chicago, U.S.A. | | Article in Journal | | 1996 |
| Fr Joseph Fenelon OFM Cap., born Ballinakill, Garryhill, Bagenalstown, Co. Carlow | Kavanagh, Myles | Article in Journal | | 2019 |
| Fr Martin Doyle - the man and his times | Joyce, John | Article in Journal | | 2013 |
| Fr Mathew : apostle of moderation | Kearney, Hugh | Article in Book | | 1979 |
| Fr Patrick McCabe | O'Reilly, Peggy | Article in Journal | | 2000 |
| Fr Patrick Smyth, peacemaker at Eureka | McDonnell, Thomas | Article in Journal | | 1985 |
| Fr Paul Henry O'Sullivan, O.P. | Gaughan, J. Anthony, 1932- | Article in Journal | | 2005 |
| Fr Robert O'Keeffe, parish priest, and the Callan controversy 1869-81 | Hogan, Patrick | Article in Book | | 1990 |
| Fr Stephen Daly, Ireland’s first Capuchin | Egan, Michael | Article in Journal | | 1996 |
| Fr Thomas Gogarty 1877-1949 local historian and noted antiquarian | Murphy, Donald | Article in Journal | | 1992 |
| Fr Thomas Shinnick P.P. Bandon 1778-1814 - pastor of his flock | O'Flynn, Paddy | Article in Journal | | 2012 |
| Fr Tom McGrath PP VF | O'Sullivan, Mary | Article in Journal | | 2006 |
| Fr William Ferris's History of BallymacElligott: the book, the bishop and the ban | McCarthy, Brendan | Article in Journal | | 2019 |
| Fr Willie (Bill) Devine | Mullan, Desmond | Article in Journal | | 1988 |
| Fr Willie (Bill) Devine | Mullan, Desmond | Article in Journal | | 1987 |
| Fr. Anthony Fahy OP | Fahy, Michael | Article in Book | | 2003 |
| Fr. Benignus Millett, OFM, 1922-2006 | Corish, Patrick J. | Article in Journal | | 2006 |
| Fr. Daniel McSwiney, 1797-1845 : a Famine victim | Walsh, Christy | Article in Journal | | 1998 |
| Fr. Gowan and the Congregation of the Holy Faith | Bugler, M. Theodore | Article in Book | | 1997 |
| Fr. Griffin, 1892-1920 | Ó Laoi, Pádraic | Monograph or Collective Volume | The author | 1994 |
| Fr. John Casey, antiquarian | MacMahon, Bryan | Article in Book | | 2012 |
| Fr. John Flatley (1846-1929) - Turbulent priest | McGinley, Michael | Article in Journal | | 2012 |
| Fr. John Gowan and St. Brigid's work | Prunty, Jacinta | Article in Book | | 1997 |
| Fr. John Gowan and the Vincentians | McCormack, Jim | Article in Book | | 1997 |
| Fr. Kennedy and the Meelin cavalry | Brosnan, John Joe | Article in Journal | | 1984 |
| Fr. Manus Sweeney - a story of 1798 | McNamara, Irene Patten | Article in Journal | | 1998 |
| Fr. Michael O'Flanagan, 1876-1942 : a priest for the people | Carroll, Denis | Article in Journal | | 1992 |
| Fr. Mogue Kearns (a rebel priest in 1798) | Kavanagh, Myles | Article in Journal | | 1997 |
| Fr. Mullen - Carlow's worthy clergyman | Anonymous | Article in Journal | | 2000 |
| Fr. Owen (Eugene) McCarthy, 1822-1857 | MacMahon, Bryan | Article in Book | | 2012 |
| Fr. Patrick Walsh - the republican priest | Williams, Tom | Article in Journal | | 2001 |
| Fr. Theobald Mathew, O.F.M. Cap. : the apostle of temperance | Lysaght, Moira | Monograph or Collective Volume | Four Courts | 1983 |
| Fr. Thomas Shinnick PP Bandon 1778-1814 - Parish Population Survey 1807|Bibliography | O'Flynn, Paddy | Article in Journal | | 2014 |
| Fr. William O'Donnell - 'the Waterloo priest' | Anonymous | Article in Journal | | 1993 |
| Fr. Wolfe's description of Limerick city, 1574 | Bradshaw, Brendan | Article in Journal | | 1977 |
| Fragmenta Rapotensiana : contributions towards a diocesan dictionary | Ó Canann, Tomás G. | Article in Journal | | 1996 |
| Fragmenta Rapotensiana : contributions towards a diocesan dictionary | Ó Canann, Tomás | Article in Journal | | 1996 |
| Fragments of a life | Rafferty, Kevin, 1936- | Monograph or Collective Volume | Columba | 2009 |
| Frances Power Cobbe and the patriarchs | O'Connor, Maureen P. | Article in Book | | 2005 |
| Francis Ledwidge, an Irish and Catholic poet | Anonymous | Article in Journal | | 1940 |
| Francis MacDonnell, OFM, son of the first earl of Antrim (d. 1636) | Giblin, Cathaldus | Article in Journal | | 1975 |
| Francis Moylan, bishop of Cork, 1735-1815 | Walsh, T. J. | Article in Journal | | 1950 |
| Francis Tregian: Benefactor of Irish refugees | Tivnan, Frank | Article in Journal | | 2018 |
| Franciscan Donegal | O'Donnell, Terence | Article in Journal | | 1957 |
| Franciscan Donegal : a souvenir of the dedication of the Franciscan church, Ros Nuala, to the Immaculate Heart of Mary, on Sunday, 29th June, 1952 | NA | Monograph or Collective Volume | Franciscan Friary, Ros Nuala | 1952 |
| Franciscan Ireland : the story of seven hundred and fifty years of the friars minor in Ireland with notes on all the major sites associated with the friars and a brief description of the other members of the Franciscan family in Ireland | Conlan, Patrick, 1940- | Monograph or Collective Volume | | 1978 |
| Franciscan servants, Tertiaries and Lay Brothers in nineteenth-century Ireland | O'Kane, Stephen | Article in Journal | | 2019 |
| Franciscans in Ireland in 1654 | Millett, Benignus | Article in Journal | | 1993 |
| Franciscans leave Drogheda after 755 years | Garry, James | Article in Journal | | 2000 |
| Franciscans of Inishowen and Derry | Faulkner, Anselm | Article in Journal | | 1982 |
| Francisco de Borja and the Irish mission of the Society of Jesus | Lennon, Colm | Article in Book | | 2011 |
| Franco-Irish ecclesiastical networks and the career of François Anglade in the Royal Catholic College oif St Patrick at Maynooth, 1757-1834 | Ferté, Patrick
| Article in Journal | | 2023 |
| François Porter, franciscain irlandais à Rome (1632-1702) | Ceyssens, Lucien | Article in Book | | 1964 |
| Francophobia in later eighteenth-century Irish history | O'Brien, Gerard | Article in Book | | 1990 |
| Frank Duff | O'Brien, Leon | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| Frank Duff | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | Gill & Macmillan | 1982 |
| Frank Duff : a biography | Ó Broin, León, 1902-1990 | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Frank Duff : a life story | Kennedy, Finola | Monograph or Collective Volume | Burns & Oates | 2011 |
| Frank Duff : Proinsias Ó Duibh : bunaitheoir Léigiún Mhuire | De Vál, Séamas S. | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2009 |
| Frank O'Connor and the literary development of Radio Éireann | Morgan-Zayachek, Eileen | Article in Journal | | 2009 |
| Frank O'Reilly: and the 31st International Eucharistic Congress of 1932 | Smith, Audrey | Article in Journal | | 2016 |
| Frederick Augustus Hervey, 1730-1803, 4th earl of Bristol, bishop of Derry : 'le bienfaiteur des Catholiques' | Walsh, J. R. | Monograph or Collective Volume | St Patrick's College, Dept of Modern History | 1972 |
| Frederick Lucas : a biography | Riethmüller, James | Monograph or Collective Volume | | 1862 |
| Frederick Lucas, The Tablet and Ireland : a Victorian forerunner of Liberation Theology | Gilley, Sheridan | Article in Book | | 1993 |
| Freedom and the fifth commandment. Catholic priests and political violence in Ireland, 1919-21 | Heffernan, Brian | Monograph or Collective Volume | Manchester University Press | 2014 |
| French bishops' mission to Ireland, October 1916 | O'Hanlon, Oliver | Article in Journal | | 2016 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| Friar's Island Oratory, Killaloe, and its fascination for James Gandon and others | Harbison, Peter | Article in Journal | | 2005 |
| Friarstown 'house of refuge' | Moran, William | Article in Journal | | 1961 |
| Friends of Ireland: early O'Connellism in Lower Canada | Lynn, Shane | Article in Journal | | 2016 |
| From "victims" of the Melk reform to apostles of the Counter-Reformation : the Irish regular clergy in the Habsburg dominions | Walsh, Katherine | Article in Book | | 1989 |
| From Alexander VII to Alexander VIII | Hanly, John | Article in Book | | 1972 |
| From Carrickbeg to Rome - the story of Fr Michael Hickey | Briody, Mícheál | Article in Journal | | 2001 |
| From Catholic Workers' College to National College of Ireland, 1951-1998 | Morrissey, Thomas J. | Article in Journal | | 1998 |
| From Connie Dodger to John Charles and beyond | Dolan, T. P. (Terence Patrick) | Article in Book | | 2013 |
| From Douai to Dublin : four hundred years of educational endeavour | McClelland, Vincent Alan | Article in Journal | | 1970 |
| From Dublin to New Orleans : Nora and Alice's journey to America 1889 | Hoy, SuellenMac Curtain, Margaret | Monograph or Collective Volume | Attic Press | 1994 |
| From ecumenism to community relations : inter-church relationships in Northern Ireland, 1980-2005 | Power, Maria | Monograph or Collective Volume | Irish Academic Press | 2007 |
| From ecumenism to community relations : interchurch relationships in Northern Ireland, 1980-1999 | Power, Maria | Thesis | | |
| From generation to generation : Clondalkin village and neighbourhood | Byrne, Roy H.Graham, Anne | Monograph or Collective Volume | [s.n.] | 1989 |
| From Hathrantone to Star of the Sea - Catholic places of worship in Portstewart | Wilson,Frances A.
| Article in Journal | | 2016 |
| From hunting field to cloister | Gwynn, M. M. Xavier | Monograph or Collective Volume | Clonmore & Reynolds | 1946 |
| From Kilcolgan Court to Ballindown. Tracing the lineage of Terence MacCoghlan of Kilcolgan Court through the Jacobite Oxburghs and Reys | Ryan, Brendan | Article in Journal | | 2011 |
| From Killymuck to Scranton : Felix McGuckin, emigrant, soldier and priest | McGuckin, J. H. | Article in Journal | | 1982 |
| From Kilmuckridges to the White River Valley : Irish Catholic settlement in Daviess County, Indiana, 1821-1850 | Gahan, Daniel | Article in Book | | 2007 |
| From militancy to social mission : the Salvation Army and street disturbances in Liverpool, 1879-1887 | Murdoch, N. H. | Article in Book | | 1992 |
| From rejection to integration : a centenary of service of Daughters of Charity to persons with a mental handicap | Robins, Joseph | Monograph or Collective Volume | Gill & Macmillan | 1992 |
| From Seagoe to Jerusalem with a singular Franciscan | Fennessy, Ignatius | Article in Journal | | 1999 |
| From the archives : 'His Grace is not pleased' | McQuaid, John Charles, bishop, 1895-1973 | Article in Journal | | 1998 |
| From the Boyne to Waterloo: military identity in Meath during the Long Eighteenth Century | McDonnell, Ciarán | Article in Journal | | 2019 |
| From the cradle to the grave : popular Catholicism among the Irish in Wales | O'Leary, Paul | Article in Book | | 1996 |
| From the origin to humani generis : Ireland as a case study | O'Leary, Don | Article in Book | | 2009 |
| From the plains of Meath to the sands of Egypt: Geoffrey de Geneville and Jean de Joinville, crusader brothers | McDonnell, Ciarán | Article in Journal | | 2018 |
| From Townland to Township : The complex evolution of a dissipative Famine Irish community in County Durham | McManus, Michael | Article in Journal | | 2004 |
| From Tuam to Ballyspellan | Ó Fearghail, Feargus | Article in Journal | | 1987 |
| From Victorian "Little Ireland" to heritage trail : catholicism, community and change in Liverpool's docklands | Boyce, Frank | Article in Book | | 1999 |
| From Westmeath to Peru Full Circle : Memoirs of a Westmeath missionary in Sicuani, Cuzco | Kelleher, Desmond | Article in Journal | | 2006 |
| Frontiers in the Irish church - regional and cultural | Simms, Katharine | Article in Book | | 1995 |
| Further letters of Robert Haly, S.J., in the Irish Jesuit Archives | Laheen, Kevin A. | Article in Journal | | 2003 |
| Gaelic and Catholic in the early middle ages | Maier, Bernhard | Article in Book | | 2013 |
| Gaelic Catholicism and the Ulster plantation | Gillespie, Raymond | Article in Book | | 2013 |
| Gaelic Ireland, popular politics and Daniel O'Connell | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Journal | | 1975 |
| Gaelic, Catholic and European : Irish priests and Irish colleges | Smith, Peter | Article in Book | [UK]:Institute for Theological Partnerships Publishing | 2015 |
| Gaelscrinte san Eoraip | Ó Fiaich, Tomás | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1986 |
| Galileo and Peter Lombard | McMullin, Ernan | Article in Journal | | 2007 |
| Galileo Galilei, Robert Bellarmine and Peter Lombard | McMullin, Ernan | Article in Book | | 2010 |
| Gall mór mo linne (2) - An tÁrd-Deochan Mac Giolla Chearra | Ó Dochartaigh, Gearalt | Article in Journal | | 1995 |
| Gall Mór mo linne - an tAthair Peadar Mac Loinsigh | Ó Dochartaigh, Gearalt | Article in Journal | | 1994 |
| Gallic gifts: the Irish College in Paris and strategies of charity, 1870-1945 | Smith, Sean Alexander | Article in Journal | | 2016 |
| Gallicanism and the veto controversy : church, state and Catholic community in early nineteenth-century Ireland | Leighton, C. D. A. | Article in Book | | 1990 |
| Gallicanism at Maynooth : Archbishop Cullen and the royal visitation of 1853 | Corish, Patrick J. | Article in Book | | 1979 |
| Galway Catholic Parish Churches, 1846 | Mac Lochlainn, Alf, 1926- | Article in Journal | | 2003 |
| Galway diocesan archives | Power, J. | Article in Journal | | 1993 |
| Galway Dominican nuns : a chronology, 1644-1988 | Anonymous | Article in Book | | 1991 |
| Galway Dominicans : a chronology, 1241-1991 | Anonymous | Article in Book | | 1991 |
| Garibaldi or the Pope : Newcastle's Irish Riot of 1861 | Jackson, Daniel M. | Article in Journal | | 2001 |
| Garvaghy : a community under siege | Garvaghy Residents | Monograph or Collective Volume | Beyond the Pale | 1999 |
| Genealogy : 'Annie's son' : Ann Carragher mother of Thomas James Fee : Tomás Ó Fiaich, archbishop of Armagh, created cardinal 30 June 1979 | Caraher Family History Society | Monograph or Collective Volume | Caraher Family History Society | 1991 |
| Gentlemen of the Presentation: Brief Biographies of Twenty-Five Presentation Brothers (1762-1999) Volume 1 | Feheney, J. Matthew | Monograph or Collective Volume | Veritas | 1999 |
| Gentlemen-bishops and faction fighters : additional letters pertaining to Newfoundland catholicism, from the Franciscan library at Killiney, Ireland | Rollmann, Hans | Article in Journal | | 1988 |
| Gentlemen-bishops and faction fighters : the letters of bishops O Donel, Lambert, Scallan and other Irish missionaries | Byrne, Cyril J.Ó Donel, James Louis | Monograph or Collective Volume | Jesperson Press | 1984 |
| Geoffrey Keating : apologist of Irish Ireland | Bradshaw, Brendan | Article in Book | | 1993 |
| Geoffrey Keating's Eochair Sgiath an Aifrinn and the Catholic Reformation in Ireland | Cunningham, Bernadette | Article in Book | | 1989 |
| Geographical propinquity among pre-famine Catholic Irish settlers in upper Canada | Brunger, Alan G. | Article in Journal | | 1982 |
| Geographies of science and religion: Catholics, the British Association and Repeal Agitation in Cork (1843) | Toal, Ciaran | Article in Journal | | 2014 |
| George Faulkner and the Irish Catholics | O'Connor, Charles | Article in Journal | | 1939 |
| George G. Higgins and the quest for worker justice : the evolution of Catholic social thought in America | O'Brien, John J. | Monograph or Collective Volume | Rowman & Littlefield | 2005 |
| George Joseph Plunkett Browne | Coen, Martin | Article in Journal | | 1978 |
| George Thomas Plunkett, bishop of Elphin, 1814-1827 | McGreevy, John | Article in Book | | 2006 |
| George Tyrell, Jacques Maritain and the challenge of modernity | Fanning, Bryan | Article in Journal | | 2012 |
| Gerald O'Donovan : priest, novelist and nation-builder | Ryan, John | Article in Book | | 2003 |
| Gerald O'Donovan, priest, novelist, intellectual: a forgotten leader of the Irish revival | Ryan, John Francis | Thesis | | 1984 |
| Gerald O’Donovan : priest, novelist, and Irish revivalist | Ryan, John F. | Article in Journal | | 1996 |
| Gerard Manley Hopkins : doomed to succeed by failure | Thomas, A. | Article in Journal | | 1966 |
| Gerard Manley Hopkins and his friends in Dublin | McGinley, Michael | Article in Journal | | 2017 |
| German church, Irish church : late nineteenth-century inter-ethnic rivalry in St. Louis's catholic community | Tillinger, Elaine C. | Article in Journal | | 1990 |
| Getting to know Grad Dad: Michael Davitt (1846-1906 | Davitt, Tom, CM | Article in Journal | | 2002 |
| Getting to know the 'Other' : inter-church groups and peace-building in Northern Ireland | Power, Maria | Article in Book | | 2007 |
| Giolla Phádraig Ó Luchráin c.1577-1612 | Hamill, TomÓ Doibhlin, Ciarán, | Article in Journal | | 1992 |
| Giovan Pietro Bellori (1613-1696) Sindaco Apostolico del Collegio S. Isidoro, Roma | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2014 |
| Gladstone, church and state | Megahey, Alan | Article in Book | | 2010 |
| Glasgow : the uneasy peace : religious tension in modern Scotland | Gallagher, Tom | Monograph or Collective Volume | Manchester University Press | 1987 |
| Gleanings on the personnel of the Catholic Convention, 1792-93 [with index] | Woods, C. J. (Christopher John) | Article in Journal | | 2014 |
| Glengariff : Sacred Heart Church 1902-2002 : a centenary celebration | Anonymous | Monograph or Collective Volume | Committee members, etc. | 2002 |
| Glenstal Abbey, Music and The Liturgical Movement | Love, Cyprian | Article in Journal | | 2006 |
| Gli esuli irlandesi nella Roma del seicento (Irish exiles in seventeenth-century Rome) | Binasco, Matteo | Article in Journal | | 2014 |
| Glimpses of 18th-century Dublin priests | Meagher, John | Article in Journal | | 1958 |
| Glimpses of eighteenth-century priests | Meagher, John | Article in Journal | | 1958 |
| Gnasanna na Marbh | Ó Duinn, Sean | Article in Journal | | 1994 |
| Go teach all nations : a history of the Irish Province of the Congregation of the Holy Spirit | | Monograph or Collective Volume | Paraclete | 2000 |
| Goaded to madness : the battle of Slabtown | Hutchinson, PaulPower, Michael | Monograph or Collective Volume | Slabtown Press | 1999 |
| God and the gun : the church and Irish terrorism | Dillon, Martin | Monograph or Collective Volume | Orion | 1997 |
| God's entrepreneurs : how Irish missionaries tried to change the world | Humphreys, Joe | Monograph or Collective Volume | New Island | 2010 |
| God's executioner : Oliver Cromwell and the conquest of Ireland | Ó Siochrú, Micheál | Monograph or Collective Volume | Faber | 2008 |
| God's scourge on a sinful nation:The Great Famine from an Achill Mission perspective | Byrne, Patricia | Article in Journal | | 2021 |
| God-provoking democrat : the remarkable life of Archibald Hamilton Rowan | Whelan, Fergus | Monograph or Collective Volume | New Island | 2015 |
| Godless colleges and mixed education in Ireland : extracts from speeches and writings of Thomas Wyse, Daniel O'Connell, Thomas Davis, Charles Gavan Duffy, Frank Hugh O'Donnell and others | Clifford, Angela | Monograph or Collective Volume | Athol | 1992 |
| Godly burden : the Catholic sisterhoods in twentieth century Ireland | Mac Curtain, Margaret | Article in Book | | 1997 |
| Going my way and Irish-American catholicism : myth and reality | McCaffrey, Lawrence J., 1925- | Article in Journal | | 2000 |
| Going to Holy Cross | De Varebeke, Hubert J. | Article in Journal | | 1955 |
| Going to the ladies' fair : Irish Catholics in New York city 1870-1900 | McDonnell, Colleen | Article in Book | | 1996 |
| Golden jubilee, 1931-81 : dedicated to most Rev. Donal J. Herlihy, bishop of Ferns, on the occasion of the golden jubilee of his priesthood, 4th April 1981 | Anonymous | Monograph or Collective Volume | Hugh O'Byrne | 1981 |
| Goliath and the boy David : Henry Fitzsimon, James Usher and the birth of Irish religious debate | Ford, Alan, 1956- | Article in Book | | 2016 |
| Good hearts : Catholic sisters in Chicago's past | Hoy, Suellen | Monograph or Collective Volume | University of Illinois Press | 2006 |
| Goodbye to Catholic Ireland | Kenny, Mary | Monograph or Collective Volume | New Island Books | 2000 |
| Goodbye to Catholic Ireland : a social, personal and cultural history from the fall of Parnell to the realm of Mary Robinson | Kenny, Mary | Monograph or Collective Volume | Sinclair-Stevenson | 1997 |
| Gorestown Catholic Church | Dillon, Charles | Article in Journal | | 2001 |
| Gothic revival architecture in Ireland. 2 vols. | Richardson, D. S. | Monograph or Collective Volume | | 1983 |
| Government and Roman Catholics in Ireland, 1850-1940 | Kerr, Donal A. | Article in Book | | 1992 |
| Government attitudes to religious nonconformity in Ireland 1660-1719 | McGuire, James | Article in Book | | 1987 |
| Grace's card : Irish Catholic landlords 1690-1800 | Chenevix Trench, Charles | Monograph or Collective Volume | Mercier Press | 1997 |
| Grangemockler : church and people, 1897-1997 | | Monograph or Collective Volume | Grangemockler Centenary Committee | 1997 |
| Gravestone Inscriptions of Co. Cork XIX: Tracton Burial Ground | Henchion, Richard | Article in Journal | | 2015 |
| Great Britain : England and Wales | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Monograph or Collective Volume | Gill | 1968 |
| Great Britain : Scotland | Handley, J. E. | Monograph or Collective Volume | Gill | 1968 |
| Great Britain and the Holy See : 1746-1870 [review article] | Buschkuhl, Matthias | Article in Journal | | 1985 |
| Great changes, increased demands: education, teacher training and the Irish Presentation Sisters | O'Reilly, Louise | Article in Book | | 2016 |
| Great expectations : the myth of Antichrist in Northern Ireland | Higgins, Gareth I. | Thesis | | |
| Great men we have given to history : Ted O'Riordan looks at the life of Dr Mannix, archbishop of Melbourne | O'Riordan, Ted | Article in Journal | | 1987 |
| Greater Ireland and the Australian immigrant : the religious dimension | Richards, Eric | Article in Book | | 2015 |
| Gregory VII and the Irish church | Gwynn, Aubrey | Article in Journal | | 1948 |
| Growth and decline of churchly religion | Fahey, Tony | Article in Book | | 2012 |
| Guardians at Multyfarnham Friary | Fennessy, Ignatius | Article in Journal | | 2013 |
| Guide to Catholic literature, 1888-1940 | Anonymous | Monograph or Collective Volume | Romig | 1942 |
| Guide to documents of Irish and British interest in Fondo Borghese, ser. 1 | | Article in Journal | | 1961 |
| Guido Bentivoglio e la politica Europea del suo tempo, 1607-1621 | Belvederi, Raffaele | Monograph or Collective Volume | Liviana | 1962 |
| Habits of compassion : Irish Catholic nuns and the origins of New York's welfare system, 1830-1920 | Fitzgerald, Maureen | Monograph or Collective Volume | University of Illinois Press | 2006 |
| Half empty or half full? Images and interpretations in the historical analysis of the Catholic Irish in nineteenth-century Canada | Darroch, Gordon | Article in Journal | | 1993 |
| Handmaids of autonomous women : the charitable activities, institution building and communal relationships of Catholic sisters in nineteenth-century Wisconsin | Deacon, F. | Monograph or Collective Volume | University of Wisconsin Press | 1989 |
| Have the snakes come back? : The family and the defence of Catholic educational structures in Ireland (1957–1975) | Walsh, John, 1971- | Article in Journal | | 2008 |
| Healing and hope : memories of an Irish ecumenist | Hurley, Michael | Monograph or Collective Volume | Columba | 2003 |
| Heber Mac Mahon, soldier bishop of the Confederation of Kilkenny | Moore, S. P. | Article in Journal | | 1952 |
| Heber Macmahon, Bishop of Clogher (d. 1650) | Millett, Benignus | Article in Journal | | 1997 |
| Hedge schools of Kerry | Lyons, Tony | Article in Journal | | 2004 |
| Heil Mary : Magdalen asylums and moral regulation in Ireland | Titley, Brian | Article in Journal | | 2006 |
| Hell or Connaught! : the Cromwellian settlement of Ireland, 1652-1660 | Ellis, Peter Berresford, 1943- | Monograph or Collective Volume | Blackstaff Press | 1988 |
| Hell or Connaught! the Cromwellian colonisation of Ireland, 1652-1660 | Ellis, Peter Berresford, 1943- | Monograph or Collective Volume | Hamish Hamilton | 1975 |
| Henry Fitzsimon, the Irish Jesuits and Catholic identity in the early modern period | Jackson, Brian | Article in Book | | 2013 |
| Henry Gillespie - from Mallow to Iowa | Moynihan, Anne | Article in Journal | | 2018 |
| Henry Ó Dochartaigh : vicar-general of the diocese of Meath | Bonner, Brian | Article in Journal | | 1980 |
| Henry Shea: Cork's first mercantile tycoon? | O'Shea, James | Article in Journal | | 2011 |
| Heraldry in St Peter's R.C. Church, West Street, Drogheda | Bellew, Séamus | Article in Journal | | 2014 |
| Heraldry in the Cathedral of the Assumption, Tuam | Bellew, Séamus | Article in Journal | | 2009 |
| Heresy in the diocese of Brooklyn : an unholy trinity | Casey, Daniel J. | Article in Journal | | 1978 |
| Heretic London, holy poverty and the Irish poor, 1830-1870. | Gilley, Sheridan | Article in Journal | | 1971 |
| Heretic London, holy poverty and the Irish poor, 1830-70 | Gilley, Sheridan | Article in Journal | | 1971 |
| Herrschaftlich-staatliche Gewalt, Gesellschaft, und Katholizismus in Irland vom 16-18 Jahrhundert .. | Hammermayer, Ludwig | Monograph or Collective Volume | | 1970 |
| Herrschaftlichstaatliche Gewalt, Gesellschaft und Katholizismus in Irland vom 16.-18. Jahrhundert | Hammermayer, Ludwig | Article in Book | | 1969 |
| Heurs et malheurs de deux saints nationaux: Patrick et Brigitte dans la tourmente politique (1850-2014) | Maignant, Catherine | Article in Journal | | 2015 |
| Hibernia Dominicana; sive, historia provinciae Hiberniae Ordinis Praedicatorum | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Monograph or Collective Volume | Gregg | 1970 |
| Hidden by 1688 and after : Irish Catholic migration to France, 1590-1685 | Ó Ciosáin, Éamon | Article in Book | | 2010 |
| Hidden treasure : sources for Catholic history in the Derby collection, Liverpool Record Office | Davies, John | Article in Journal | | 2007 |
| Hide and seek : the Irish priest in the Vatican who defied the Nazi command. A dramatic true story of rivalry and survival during WWII | Walker, Stephen | Monograph or Collective Volume | Collins | 2011 |
| Hierarchia catholica medii et recentioris aevi. Vol. 7 : 1800-1846 | Pirminus, P.Ritzler, P. Remigius | Monograph or Collective Volume | Il Messaggero di S. Antonio | 1968 |
| Higher education for Catholics | McQuaid, John Charles, bishop, 1895-1973 | Monograph or Collective Volume | [s.n.] | 1961 |
| Highly respectable and accomplished ladies : Catholic women religious in America, 1790-1850 | Misner, Barbara | Monograph or Collective Volume | # | 1988 |
| Histoire de L'église depuis les origines jusqu'à nos jours | Fliche, AugustinJarry, E.Martin, V.Preclin, E. | Monograph or Collective Volume | Bloud & Gay | 1955 |
| Historic sites and traditions, 3 : Father James Maria McGuckin, O.M.I., Irish pioneer priest in British Columbia | Ó Muirí, Réamonn | Article in Journal | | 1999 |
| Historic Ulster Churches | Walker, Simon, 1970- | Monograph or Collective Volume | Institute of Irish Studies, Queen's University Belfast | 2000 |
| Historical Marian devotional practices among the Daughters of Charity | Neylon, Anne | Article in Book | | 2014 |
| Historical sketch of the late Catholic Association of Ireland. | Wyse, Thomas, Sir, 1791-1862 | Monograph or Collective Volume | Henry Colburn | 1829 |
| History and antiquities of the diocese of Ossory | Carrigan, William, 1860-1924 | Monograph or Collective Volume | [s.n.] | 1980 |
| History and destiny in the making of the Irish Catholic spiritual empire | Whelan, Irene | Article in Book | | 2017 |
| History and pluralism : Gladstone and the Maynooth grant controversy | McCarthy, John-Paul | Article in Book | | 2010 |
| History and politics : Macaulay and Ireland | Millgate, Jane | Article in Journal | | 1973 |
| History and the shaping of Irish Protestantism | Bowen, Desmond | Monograph or Collective Volume | Peter Lang | 1996 |
| History as authority in Alexander Campbell's 1837 debate with Bishop Purcell | Weedman, Mark | Article in Journal | | 1996 |
| History of Clonmany Village, Inishowen | Harkin, Marius | Article in Journal | | 2019 |
| History of Clonmel | Burke, William P. | Monograph or Collective Volume | | 1907 |
| History of Drogheda up to date | Hughes, Anne | Monograph or Collective Volume | Old Drogheda Society | 2003 |
| History of St Colman's College, Violet Hill, Newry, Dromore Diocesan Seminary | Campbell, E.Mooney, Bernard J. | Monograph or Collective Volume | Bennett | 1944 |
| History of St Mary's parish church | Fennell, Harry | Article in Journal | | 1986 |
| History of the Anglo-Irish province of the Missionary Oblates of Mary Immaculate : part 1 : 1841-1921 | Denny, Vincent | Monograph or Collective Volume | Oblate Fathers | 1991 |
| History of the archdiocese of Boston in the various stages of its development 1604 to 1943. Vol. 1-3 | Harrington, Edward T.Lord, R. H.Sexton, John E. | Monograph or Collective Volume | Sheed & Ward | 1944 |
| History of the catholic archbishops of Dublin since the reformation. Vol. 1 | Moran, Patrick Francis, cardinal, 1830-1911 | Monograph or Collective Volume | | 1864 |
| History of the Catholic schools of Kilkenny from the year 1782 to the present time. | Murphy, N. | Article in Journal | | 1883 |
| History of the Diocese of Meath 1860-1993 | | Monograph or Collective Volume | The Most Rev. Michael Smith, Bishop of Meath | 1995 |
| History of the Irish College, Paris, 1578-1800 : calendar of the papers of the Irish College, Paris | | Article in Journal | | 1980 |
| History of the Irish Hospitalité of Our Lady of Lourdes, 1930-1990 | Kelly, Patrick | Monograph or Collective Volume | Brendan Byrne & Associates | 1992 |
| History of the Popes from the close of the middle ages. Vol. 26 (Leo XI and Paul V, 1605-21) | Pastor, Ludwig | Monograph or Collective Volume | Kegan Paul | 1937 |
| History of the town and county of Wexford. 6 vols. | | Monograph or Collective Volume | | 1900 |
| History of the Wexford Catholic Young Men's Society, 1855-2008, Vol. 2. | O'Rourke, Michael A. | Monograph or Collective Volume | Breffni | 2009 |
| History of the Wexford Catholic Young Men's Society, 1855-2008. Vol. 1. | O'Rourke, Michael A. | Monograph or Collective Volume | Breffni | 2008 |
| Hold firm : John Charles McQuaid and the second Vatican Council | Carty, Francis Xavier | Monograph or Collective Volume | Columba | 2007 |
| Holy Cross 1902-2002 : centenary souvenir | | Monograph or Collective Volume | Horizon Publications | 2002 |
| Holy Cross : a personal experience | Troy, Aidan | Monograph or Collective Volume | Currach Press | 2005 |
| Holy Cross : the untold story | Cadwallader, Anne | Monograph or Collective Volume | Brehon Press | 2004 |
| Holy Cross : Tipperary's famed religious site | Hayes, William J. | Article in Book | | 1993 |
| Holy Cross church, Kenmare, 150 (1864-2014) : a social and local history | Holycross 150 History Group, Kenmare | Monograph or Collective Volume | Holy Cross 150 History Group | 2014 |
| Holy Cross College, Clonliffe, 1859-1959 | Sherry, Richard | Article in Journal | | 1960 |
| Holy Cross College, Clonliffe, Dublin 1859-1959 | Anonymous | Monograph or Collective Volume | Holy Cross College | 1963 |
| Holy Cross College, Clonliffe, Dublin, 1859-1959 | Anonymous | Monograph or Collective Volume | Irish Printers Ltd | 1962 |
| Holy Family parish : centenary celebration 1893-1993 | | Monograph or Collective Volume | Holy Family Parish | 1993 |
| Holy Office documents concerning Terence MacSwiney's hunger strike (1920) | Belletti, Alberto | Article in Journal | | 2018 |
| Holy Redeemer Church, 1792-1991 : a Bray parish | Ó Cathaoir, Brendan | Monograph or Collective Volume | Church of the Most Holy Redeemer | 1991 |
| Holy secularity in a rural parish | Ward, Leo | Article in Journal | | 1971 |
| Holy smoke? | Herschan, Otto | Monograph or Collective Volume | TAF Publishing | 2011 |
| Holy Trinity Church, Killiney, 1858-1996 : a parish history | Parish of Holy Trinity, Killiney | Monograph or Collective Volume | Parish of the Holy Trinity, Killiney | 1996 |
| Holy war at Aasleagh, 1851-1884 | McGinley, Michael | Article in Journal | | 2008 |
| Holy war in Belfast | Boyd, Andrew, 1921- | Monograph or Collective Volume | Pretani Press | 1987 |
| Holy war in Belfast | Boyd, Andrew, 1921- | Monograph or Collective Volume | Anvil | 1969 |
| Holy water and a twig : Catholic households and women’s religious authority in modern Ireland | Delay, Cara | Article in Journal | | 2018 |
| Holy wells | Daly, Eugene | Article in Journal | | 2011 |
| Holy Year 1950 Drogheda pilgrimage to Rome | McQuillan, Finian | Article in Journal | | 2007 |
| Home rule as Rome rule : the unspoken unionist and loyalist case | Kelleher, Derry | Monograph or Collective Volume | Justice Books | 1997 |
| Hope against history : the course of the Ulster conflict | Holland, Jack | Monograph or Collective Volume | Hodder and Stoughton | 1999 |
| Hopkin's closest friend in Ireland : Robert Curtis, S.J. | Feeney, Joseph | Article in Book | | 1988 |
| Hopkin's political ideas | Marucci, Franco | Article in Book | | 1988 |
| Hopkins in 1884 | Bergonzi, Bernard | Article in Book | | 1988 |
| How Cashel and Emly were united | Ó Laoí, Cristóir | Article in Journal | | 1990 |
| How much discrimination was there under the Unionist regime, 1921-68? | Whyte, John | Article in Book | | 1983 |
| How not to start a mission? : Andrew Boylan (1842-1910) and the Philippines | McConvery, Brendan | Article in Book | | 2015 |
| How shall we sing in a foreign land? : music of Irish-Catholic immigrants in the antebellum United States | Grimes, R. R. | Monograph or Collective Volume | University of Notre Dame Press | 1996 |
| How the Birr Stone was brought to Cullaun | Murphy, Ignatius | Article in Journal | | 1996 |
| How the Irish became Protestant in America | Carroll, Michael P. | Article in Journal | | 2006 |
| How the Irish became white | Ignatiev, Noel | Monograph or Collective Volume | Routledge | 1995 |
| How were the 1641 depositions manipulated in England to persuade the English masses of Catholic persecution? | Cooper, Sophie | Article in Journal | | 2011 |
| Hugh Charles Horan of Galway and Mother Mary MacKillop | Fennessy, Ignatius | Article in Journal | | 1999 |
| Hugh MacMahon, Bishop of Clogher 1707-15 and Archbishop of Armagh 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Hugh McCaghwell, O.F.M., archbishop of Armagh (+ 1626) : aspects of his life | Giblin, Cathaldus | Article in Book | | 1995 |
| Hugh McMahon, bishop of Clogher, 1707-15, and archbishop of Armagh, 1715-37 | Flynn, L. J. | Article in Journal | | 1973 |
| Hugh O'Neill and the nine years' war in Tudor Ireland | Morgan, Hiram | Article in Journal | | 1993 |
| Hughes: lion of American Catholicism | McCann, Richard Daniel | Monograph or Collective Volume | E-Book Time | 2017 |
| Hymns and Irish Catholicism - a new perspective | Phelan, Helen | Article in Journal | | 2002 |
| I quaccheri contro il Papa. Alcuni pamphlet inglesi del ’600 tra menzogne e verità | Villani, Stefano, 1968- | Article in Journal | | 1998 |
| I remember Maynooth | Kevin, Neil | Monograph or Collective Volume | St Patrick's College | 1995 |
| I volti di Luca Wadding | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2013 |
| Ian Paisley: a critical comment | Southern, Neil | Article in Journal | | 2010 |
| Identities in conflict : New York Irish Catholics' response to the Spanish Civil War, 1936-1939 | Wood, Julie K. | Article in Journal | | 1992 |
| Identity and ideology in Northern Ireland | Gallagher, A. M. | Article in Journal | | 1988 |
| Identity and political fragmentation in independent Ireland, 1923-83 | Fuller, Louise | Article in Book | | 2013 |
| Identity in Northern Ireland : communities politics and change | McCall, Cathal | Monograph or Collective Volume | Macmillan | 1999 |
| Identity, place, and the political mobilization of urban minorities : comparative perspectives on Irish Catholics in Buffalo and Toronto 1880 - 1910 | Jenkins, William | Article in Journal | | 2007 |
| Ignazio Persico's 'Relazione sulla condizione religiosa e civile d'Irlanda' (1887) | Belletti, Alberto | Article in Journal | | 2019 |
| Illegitimacy and Pre-Nuptial Pregnancy in Ireland before 1864 : The evidence of some Catholic Parish Registers | Connolly, Sean J. | Article in Journal | | 1979 |
| Illuminated addresses | Law, Edward J. | Article in Journal | | 2010 |
| Illustrations of the Holy Trinity in Galway city | Walsh, Paul | Article in Journal | | 1991 |
| Images of God : Northern Ireland and theology | O'Hanlon, Gerard | Article in Journal | | 1984 |
| Images of Hartford's Irish-Catholic community : 1827-1867 | Duffy, Joseph | Article in Journal | | 1990 |
| Imagining angels in early modern Ireland | Gillespie, Raymond | Article in Book | | 2006 |
| Imagining Catholic Ireland : the nationalist press and the creation of national identity, 1843-1870 | O'Brien, William George | Thesis | | 2007 |
| Imirce na hIarlaí : aistriúchán agus nótaí ar léacht leis an Chairdinéal Tomás Ó Fiaich - 'from Donegal to Rome by boat, coach and horseback' : turas na nUaisle Gael as Éirinn 1607-8, coiste éigse Sheáin Bháin | Ó Murchú, Marcas | Monograph or Collective Volume | Coiscéim | 2007 |
| Immigrant nuns : their participation in the process of Americanization : Massachusetts and Rhode Island, 1880-1920 | Donovan, Grace | Article in Journal | | 1991 |
| Immigrants and temperance : ethnocultural conflict in Cincinnati, 1845-1860 | Dannenbaum, Jed | Article in Journal | | 1978 |
| Immigrants and their church | Liptak, D. A. | Monograph or Collective Volume | Macmillan | 1989 |
| Immigrants in the city : New York's Irish and German Catholics | Dolan, Jay P., 1936- | Article in Journal | | 1972 |
| Immortal Dan : Daniel O'Connell in Irish folk tradition | Uí Ógáin, Ríonach | Monograph or Collective Volume | Geography Publications | 1995 |
| Improvements to the parish in 1898 | Power, John | Article in Journal | | 2009 |
| Improving the housing conditions for the Irish migratory potato workers in Scotland : the work of the Bishops' (Gresham) Committee, 1920-1923 | Holmes, Heather | Article in Journal | | 1998 |
| Impure thoughts : sexuality, Catholicism and literature in twentieth-century Ireland | Cronin, Michael G. | Monograph or Collective Volume | Manchester UP | 2012 |
| In a corner of seventeenth-century Rome | Woods, Penelope | Article in Book | | 2015 |
| In ainm na saoire: Piaras Mac Canna, Caitliceach, Óglach, Gaeilgeoir | Mac Peaircín, Liam, 1938-2019 | Article in Journal | | 2012 |
| In communion with the 'king of Sunday' | Kelly, David | Article in Book | | 2012 |
| In defence of Irish catholicism : Charles de Montalembert's aborted 'History of Ireland' and 'Journal Intime' | Rivière, Marc Serge | Article in Book | | 2004 |
| In Fr John Murphy's footsteps | Furlong, Nicholas | Article in Journal | | 1987 |
| In general, they do not answer well? : Irish priests in the western lowlands of Scotland, 1838-50 | Mitchell, Martin J. | Article in Book | | 2003 |
| In memoriam : Rt Rev. Monsignor Laurence Marron | Anonymous | Article in Journal | | 1996 |
| In memoriam : Very Rev. Pádraig Ó Gallachair | Anonymous | Article in Journal | | 1996 |
| In memory of Caheraderry chapel | Bellow, Susan | Article in Journal | | 1989 |
| In memory of Rev. James V. Hayes, S.M.A., 1918-1999 | Darcy, Brendan | Article in Journal | | 2000 |
| In novi orbis amplitudine: Irish Franciscan views of the Americas in the seventeenth century, 1610-1683 | Hazard, Benjamin | Article in Book | | 2010 |
| In pursuit of a positive construction: the Irish Catholics and the Williamite articles of surrender, 1690-1701 | Kinsella, Eoin | Article in Journal | | 2009 |
| In quest of an heir : the life and times of John Butler, Catholic bishop of Cork, Protestant baron of Dunboyne | Costello, Con | Monograph or Collective Volume | | 1978 |
| In Search of a State : Catholics in Northern Ireland | O'Connor, Fionnuala | Monograph or Collective Volume | The Blackstaff Press | 1993 |
| In search of ethnicity in Ireland | Poole, Michael A. | Article in Book | | 1997 |
| In search of honour and a Catholic monarch : the assimiliation and integration of an Irish minority in early modern Castile, 1601-1638 | O'Scea, Ciaran | Thesis | | 2007 |
| In search of James : celebrating the 250th anniversary of the birth of James Hoban, architect and builder of the White House|In search of James: a sequel | Bergin, Denis | Article in Journal | | 2021 |
| In the footsteps of long ago saints : Irish Capuchins in the Rhineland | McCafferty, John | Article in Book | | 2015 |
| In the footsteps of O'Donovan and O'Flyn. Settlement and religious practice in the parish of Kiltullagh from 1828 to 1858 | McGuire, Kevin | Article in Journal | | 2019 |
| In the lands of Brien | Brien, Christopher | Monograph or Collective Volume | Christopher Brien | 1984 |
| In the line of duty : priests who ministered to the famine victims | O'Shea, Kieran | Article in Book | | 1997 |
| In the name of God and Ireland : the conflict between the Catholic bishops and militant republicans in Ireland, 1922-5 | McCabe, Michael P., 1977- | Thesis | | |
| In the palm of God's hand? the Irish catholic experience in mid-nineteenth century Guelph | Nash-Chambers, Debra L. | Article in Journal | | 1984 |
| In the shadow of the spire - a personal recollection | Shaw, Eric | Article in Journal | | 2005 |
| In the shadow of the spire : a profile of St John's parish | Fitzmaurice, W.Hannan, Kevin | Monograph or Collective Volume | [s.n.] | 1991 |
| In the steps of King William : Scottish Orangeism's military foundation | Bryce, David, 1926- | Monograph or Collective Volume | [D. Bryce] | 2006 |
| In times gone by... | O' Connor, Tom, Fr. | Article in Book | | 2012 |
| Incorporating and denationalizing the Irish in England : the role of the Catholic church | Hickman, Mary J. | Article in Book | | 1996 |
| Independent Orangeism and class conflict in Edwardian Belfast : a reinterpretation | Patterson, Henry | Article in Journal | | 1980 |
| Infamous attacks on women: Sectarian violence in Bangor in July 1920 | Patterson, Henry | Article in Book | | 2022 |
| Influencing the influential : Irish Jesuit periodicals | O'Keeffe, Declan | Article in Book | | 2021 |
| Innocent XII and early Irish penal legislation | Creighton, Seamus | Article in Journal | | 1962 |
| Insel der Martyrer oder ein Volk von Rebellen? Deutschlands Katholiken und die irische Nationalbewegung in der Ara Daniel O'Connells (ca. 1820-1847) | Schneider, Bernhard | Article in Journal | | 2008 |
| Insights into fifty years of episcopal elections (1774-1824) | Bolster, M. A. | Article in Journal | | 1972 |
| Inspired educator and ecumenist of roots | O'Carroll, Michael | Article in Journal | | 1998 |
| Institutional solution to a social problem: industrial schools in Ireland and the Sisters of Mercy, 1869 to 1950 | Lunney, Sheila | Thesis | | 1996 |
| Insular Christianity : alternative models of the church in Britain and Ireland, c. 1570 – c. 1700 | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Insurgent Wicklow 1798 : the story as written by Rev. Bro. Luke Cullen, O.D.C., 1793-1859. | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | | 1948 |
| Inter-church relations in the 19th and 20th centuries | Warren, Stanley E. | Article in Book | | 2005 |
| Interdenominational relations in Connacht in the eighteenth-century | Solon, John | Article in Journal | | 1993 |
| Interdenominational relations in pre-famine Tipperary | McGrath, Thomas | Article in Book | | 1985 |
| Internal ethnic friction : orange and green in nineteenth-century New York, 1868–1872 | McGlmpsey, Christopher D. | Article in Journal | | 1982 |
| Internal tamponage, hockey parturition and mixed athletics | Ó hÓgartaigh, Margaret | Article in Journal | | 2007 |
| International and modern ideals in Irish female medical missionary activity, 1937-1962 | Veale, Ailish | Article in Journal | | 2016 |
| International competition and the treatment of minorities : seventeenth century cases and general propositions | Clark, Samuel | Article in Journal | | 1998 |
| Internment and detention without trial in Northern Ireland 1971-1975 : ministerial policy and practice | Sprjut, R. J. | Article in Journal | | 1986 |
| Intolerance in Ireland, facts not fiction | Anonymous | Monograph or Collective Volume | Simpkin, Marshall | 1914 |
| Introduction | Kerr, Donal A. | Article in Book | | 1998 |
| Introduction | Gilley, SheridanSwift, Roger | Article in Book | | 1989 |
| Introduction | Rafferty, Oliver P. | Article in Book | | 2013 |
| Introduction | Murphy, James H. | Article in Book | | 2005 |
| Introduction | Begadon, Cormac ; Kelly, James E. | Article in Book | | 2022 |
| Introduction - college communities abroad: education, migration and Catholicism in early modern Europe | Chambers, Liam | Article in Book | | 2017 |
| Introduction : Father Luke Wadding - a multifaced Irishman in a global world | Binasco, Matteo | Article in Book | | 2020 |
| Introduction : Ireland church, state and society 1900–1975 | Breathnach, Ciara | Article in Journal | | 2008 |
| Introduction : the historiography of the diocese of Dublin | Kelly, James, 1959- | Article in Book | | 2000 |
| Introduction : The Protestant Succession | Beddard, Robert | Article in Book | | 1991 |
| Introduction to volume 5 : religion and identity | O'Sullivan, Patrick | Article in Book | | 1996 |
| Introduction: Rome and Irish Catholicism in the Atlantic world. A Roman perspective | Binasco, Matteo | Article in Book | | 2019 |
| Inventario dei Registri Vaticani | Giusti, Martino | Monograph or Collective Volume | | 1981 |
| Ireland | Keogh, DermotO'Driscoll, Finín | Article in Book | | 1996 |
| Ireland & the European reformation | Bottigheimer, Karl S.Lotz-Heumann, Ute | Article in Journal | | 1998 |
| Ireland : a new phase in the conflict between nationalism and unionism | Patterson, Henry | Article in Journal | | 1989 |
| Ireland : the politics of enmity, 1789-2006 | Bew, Paul | Monograph or Collective Volume | Oxford University Press | 2007 |
| Ireland and Anglo-papal relations, 1880-5 | Woods, C. J. (Christopher John) | Article in Journal | | 1972 |
| Ireland and England | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Book | | 1971 |
| Ireland and Europe in 1825 : situating the Banims | Kilfeather, Siobhán | Article in Book | | 2006 |
| Ireland and Propaganda Fide, 1672-6 | | Article in Journal | | 1956 |
| Ireland and rape crises | McKay, Susan | Article in Journal | | 2007 |
| Ireland and the Catholic revival | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1950 |
| Ireland and the council of Trent | Carey, F. P. | Article in Journal | | 1945 |
| Ireland and the Ecclesiastical Titles Bill | Brady, J. | Article in Journal | | 1950 |
| Ireland and the English Reformation : state reform and clerical resistance in the diocese of Dublin, 1534-1590 | Murray, James | Monograph or Collective Volume | Cambridge University Press | 2009 |
| Ireland and the Great War : a social and political history | Gallagher, Niamh | Monograph or Collective Volume | Bloomsbury Academic | 2019 |
| Ireland and the Holy Land | Hoade, Eugene | Article in Journal | | 1952 |
| Ireland and the Holy See | Sheehy, Maurice P. | Article in Journal | | 1962 |
| Ireland and the Irish : a short history | Bottigheimer, Karl S. | Monograph or Collective Volume | Columbia University Press | 1982 |
| Ireland and the Popish Plot | Gibney, John, 1976- | Monograph or Collective Volume | Palgrave Macmillan | 2009 |
| Ireland and the popish plot | Gibney, John | Thesis | | 2006 |
| Ireland and the theology of Human rights | Murray, Raymond, Msgr | Chapter in Book | | 2015 |
| Ireland and the Vatican : the politics and diplomacy of church-state relations, 1922-1960 | Keogh, Dermot | Monograph or Collective Volume | Cork University Press | 1995 |
| Ireland as a Catholic nation | Cahill, Edward | Monograph or Collective Volume | Irish Messenger Publications | 1939 |
| Ireland Before and After the Second Vatican Council | Daly, Mary E. | Article in Book | Oxford University Press | 2023 |
| Ireland Britain and mass literacy in nineteenth-century Europe | Lyons, Paddy | Article in Book | | 2006 |
| Ireland divided : the roots of the modern Irish problem | Hughes, Michael, 1942-1993 | Monograph or Collective Volume | St. Martin's Press | 1995 |
| Ireland in official print culture, 1800-1850 : a new reading of the Poor Inquiry | Ó Ciosáin, Niall | Monograph or Collective Volume | Oxford University Press | 2014 |
| Ireland in perspective | Barkley, John M. | Monograph or Collective Volume | British Council of Churches | 1989 |
| Ireland in the seventeenth century, or the Irish massacres of 1641-2, their causes and results. 2 vols. | Hickson, Mary | Monograph or Collective Volume | | 1884 |
| Ireland since 1800 : conflict and conformity | Hoppen, K. Theodore, 1941- | Monograph or Collective Volume | Longman | 1999 |
| Ireland under the Tudors : with a succinct account of the earlier history. 3 vols. | Bagwell, Richard | Monograph or Collective Volume | Longmans, Green | 1885 (v. I & II)
1890 (v. III) |
| Ireland's Catholics in the British state, 1850-1922 | O'Day, Alan | Article in Book | | 1992 |
| Ireland's clumsy transformation from confessional state to nation state | Miller, David W. | Article in Book | | 2016 |
| Ireland's debt to Newman | Hegarty, W. J. | Article in Journal | | 1945 |
| Ireland's empire : the Roman Catholic church in the English-speaking world, 1829-1914 | Barr, Colin | Monograph or Collective Volume | Cambridge University Press | 2020 |
| Ireland's first papal nuncio | Corish, Patrick J. | Article in Journal | | 1954 |
| Ireland's holy wars : the struggle for a nation's soul, 1500 - 2000 | Taaffe, Frank | Monograph or Collective Volume | Yale University Press | 2001 |
| Ireland's loyalty to the mass | Augustine,OFM | Monograph or Collective Volume | [s.n.] | 1938 |
| Ireland's Magdalen laundries : confronting a history not yet in the past | O'Rourke, MaeveSmith, James M. | Article in Book | | 2016 |
| Ireland's Magdalen laundries and the nation's architecture of containment | Smith, James M., 1966- | Monograph or Collective Volume | University of Notre Dame Press | 2007 |
| Ireland's man in the Holy Land : Father Jerome Murphy-O'Connor OP (1935-2013) | McConvery, Brendan | Article in Book | | 2015 |
| Ireland's Missions and Missionaries in the Twentieth Century | Bateman, Fiona | Article in Book | Oxford University Press | 2023 |
| Ireland's place in the history of the martyrology | Hennig, John | Article in Journal | | 1979 |
| Ireland's Role in the Foreign Policy of William III | Troost, Wouter | Article in Book | | 2007 |
| Ireland's spiritual empire : church dedications in Australia | Hennig, John | Article in Journal | | 1944 |
| Ireland, 1815-70 : emancipation, famine and religion | | Monograph or Collective Volume | Four Courts | 2011 |
| Ireland, Elizabeth I and the Counter-Reformation | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1961 |
| Ireland, England and the restoration of the Society of Jesus | Morrissey, Thomas J. | Article in Book | | 2003 |
| Ireland, Sheila and Newfoundland | Halpert, Herbert | Article in Book | | 1977 |
| Ireland, the pope and vocationalism : the impact of the encyclical Quadragesimo Anno | Mullarkey, Kieren | Article in Book | | 1999 |
| Ireland, the popish plot and 'British' history, 1678-81 | Gibney, John, 1976- | Article in Book | | 2004 |
| Ireland, the renaissance and the counter-reformation | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1967 |
| Ireland, the Vatican and the Cold War : the case of Italy, 1948 | Keogh, Dermot | Article in Journal | | 1991 |
| Ireland, the Vatican and the Cold War : the case of Italy, 1948 | Keogh, Dermot | Article in Journal | | 1991 |
| Ireton's siege of Waterford, July-August 1650 | McCarthy, Patrick | Article in Journal | | 2020 |
| Irish 'boursiers' at the Collège de Reims, Paris, 1650-1706 | Chambers, Liam | Article in Journal | | 2017 |
| Irish America | Byron, Reginald | Monograph or Collective Volume | Clarendon Press | 1999 |
| Irish Americans in American politics and the Catholic Church, 1870-1945 | Meagher, Thomas J. | Article in Book | | 2024 |
| Irish and Catholic : myth or realtiy? : another sort of Irish and the renewal of the clerical profession among Catholics in England | Connolly, Gerard | Article in Book | | 1985 |
| Irish and Catholic identity : ritual discourse and the formation of consciousness 1922-1967 | Fuller, Louise | Article in Book | | 2005 |
| Irish and Spanish cultural and political relations in the work of O'Sullivan Beare | Carroll, Clare | Article in Book | | 1999 |
| Irish archaeology and the poetry of Edmund Spenser : content and context | Herron, Thomas, 1968- | Article in Book | | 2009 |
| Irish bishop in a Moorish prison | Mooney, Canice | Article in Journal | | 1940 |
| Irish bishops and clergy in exile in mid-seventeenth century France | D'Ambrienes, René,Ó Ciosáin, Éamon | Article in Journal | | 2008 |
| Irish born secular priests in the diocese of Salford | Bracken, Robert | Monograph or Collective Volume | N. Richardson | 1984 |
| Irish cardinals | Ní Chearbhaill, Maire | Monograph or Collective Volume | Elton Press | 1983 |
| Irish Catholic chaplains in the British armed forces during the First World War | O'Neill, Hugh | Article in Journal | | 2011 |
| Irish Catholic Chaplains in WWI | Casey, Gerard | Article in Journal | | 2015 |
| Irish Catholic Culture Before and After Vatican II | Fuller, Louise | Article in Book | Oxford University Press | 2024 |
| Irish Catholic culture in the nineteenth century : a study in perjury | Edwards, Owen Dudley | Article in Book | | 2013 |
| Irish Catholic directories | Altholz, Josef Lewis, 1933- | Article in Journal | | 1992 |
| Irish catholic education in Victorian Toronto : an ethnic response to urban conformity | Nicolson, Murray W. | Article in Journal | | 1984 |
| Irish Catholic education, 1669-85 | Howard, Leonard | Article in Journal | | 1969 |
| Irish Catholic fiction of the early twentieth century : the power of imagery | Wilson, Ann | Article in Journal | | 2014 |
| Irish Catholic genesis of Lowell | O'Dwyer, George F. | Monograph or Collective Volume | Lowell Museum Corporation | 1981 |
| Irish Catholic genesis of Lowell | O'Dwyer, George F. | Monograph or Collective Volume | Sullivan Bros. | 1920 |
| Irish Catholic identities | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Irish Catholic identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic Identity in 1870s Otago, New Zealand | Breathnach, Ciara | Article in Journal | | 2013 |
| Irish Catholic loyalty and identity in the British Empire : the Ancient Order of Hibernians in Canada, 1878–1925 | Tait, Jackson | Article in Journal | | 2020 |
| Irish Catholic marriages in the London Lying-In Hospital records | Anonymous | Article in Journal | | 1998 |
| Irish Catholic marriages in the London Lying-In Hospital records | Anonymous | Article in Journal | | 1998 |
| Irish Catholic politics in Ontario | Cottrell, Michael | Article in Book | | 1988 |
| Irish Catholicism | Jordan, John | Article in Journal | | 1983 |
| Irish Catholicism and English Toryism | Cahill, G. A. | Article in Journal | | 1957 |
| Irish Catholicism and science: from 'Godless colleges' to the 'Celtic Tiger' | O'Leary, Don | Monograph or Collective Volume | Cork University Press | 2012 |
| Irish Catholicism and the Great Famine | Miller, David William, 1940- | Article in Journal | | 1975 |
| Irish Catholicism and the historian [review article] | Miller, David William, 1940- | Article in Journal | | 1986 |
| Irish Catholicism in Britain | Gilley, Sheridan | Article in Book | | 1992 |
| Irish Catholicism in Liverpool : the 1920s and 1930s | Boyce, Frank | Article in Book | | 1993 |
| Irish Catholicism in Sunderland in the nineteenth century | Fetherston, Vivienne | Article in Journal | | 2002 |
| Irish Catholicism in the diaspora : the case of the United States | Doyle, David Noel | Article in Book | | 2002 |
| Irish Catholicism since 1950 : the undoing of a culture | Fuller, Louise | Monograph or Collective Volume | Gill & Macmillan | 2002 |
| Irish Catholics : traditions and transition | Ó Ríordáin, J. | Monograph or Collective Volume | Veritas | 1980 |
| Irish Catholics and freedom since 1916 | Fennell, Desmond | Monograph or Collective Volume | Dominican Publications | 1984 |
| Irish Catholics and French Creoles : ethnic struggles within the Catholic church in New Orleans, 1835-1920 | Doorley, Michael | Article in Journal | | 2001 |
| Irish Catholics and the bible in the nineteenth century | Rafferty, Oliver P. | Article in Book | | 2013 |
| Irish Catholics and the British labour movement : a study with particular reference to London, 1918-70. | McDermott, Michael | Thesis | | 1970 |
| Irish Catholics and the French revolution | O'Flaherty, Eamon | Article in Book | | 1990 |
| Irish Catholics and the legislative union, 1800 | Burke, T. | Article in Journal | | 1944 |
| Irish Catholics and the Manitoba school crisis, 1885-1921 | Davis, Richard P. | Article in Journal | | 1973 |
| Irish Catholics and the parliamentary franchise, 1692-1728 | Simms, J. G. (John Gerald) | Article in Journal | | 1960 |
| Irish Catholics and the political culture of Upper Canada. The case of the 'Toronto Mirror', 1837-1865 | Fahey, Curtis | Article in Book | | 1988 |
| Irish Catholics before the famine : patterns and questions | Corish, Patrick J. | Article in Journal | | 1986 |
| Irish Catholics in a yankee town : a report about Brattleboro, 1847-1898 | Anonymous | Article in Journal | | 1976 |
| Irish Catholics in Belfast and Glasgow in the early twentieth century : connections and comparisons | Hepburn, Anthony C. | Article in Book | | 1995 |
| Irish Catholics in south east Lancashire : a conflict of loyalties? | Flinn, A. | Article in Journal | | 2000 |
| Irish Catholics in the building of the Ocmulgee and Flint railroad | Chalker, Fussell | Article in Journal | | 1971 |
| Irish Catholics in the West of Scotland in the Nineteenth Century : despised by Scottish workers and controlled by the Church? | Mitchell, Martin J. | Article in Book | | 2008 |
| Irish Catholics promoting their mission to convert the pagan world, 1900-1960 | Finnegan, Michael | Thesis | | 2001 |
| Irish Catholics, French Cartesians : Irish relations to Cartesianism in France, 1671-1726 | Chambers, Liam | Article in Book | | 2004 |
| Irish Christians and the struggle for a just society | Lane, Dermot A. | Article in Book | | 2003 |
| Irish church : architecture in the era of Vatican II | Hurley, Richard | Monograph or Collective Volume | Dominican Publications | 2001 |
| Irish Church Records | Sharkey, Joan | Article in Journal | | 2012 |
| Irish church records : their history, availability and use in family and local history research | | Monograph or Collective Volume | Flyleaf Press | 2001 |
| Irish church records : their history, availability and use in family and local history research | | Monograph or Collective Volume | Flyleaf Press | 1992 |
| Irish church-building : popery, Pugin and the Protestant ascendancy | Sheehy, Jean | Article in Book | | 1995 |
| Irish civil society : from church to media domination | Inglis, Tom | Article in Book | | 2000 |
| Irish civil society and the Great War, 1914-1918 | Gallagher, Niamh Aislinn | Thesis | | |
| Irish clerics and French politics of grace | O'Connor, Priscilla | Article in Book | | 2003 |
| Irish clerics in France in the seventeenth and eighteenth centuries : a statistical study | Brockliss, Laurence W. B.Ferté, Patrick | Article in Journal | | 1987 |
| Irish college at Salamanca - last days | Browne, Michael | Article in Journal | | 1971 |
| Irish College, Rome : Kirby papers | Corish, Patrick J. | Article in Journal | | 1974 |
| Irish College, Rome : Kirby papers | Corish, Patrick J. | Article in Journal | | 1975 |
| Irish colleges abroad | Wall, Thomas | Article in Journal | | 1947 |
| Irish Collegians in Spanish Service (1560–1803) | O’Connor, Thomas | Article in Book | | 2018 |
| Irish cultural contributions in early New York | Purcell, Richard J. | Article in Journal | | 1937 |
| Irish De la Salle brothers in Christian education | Towey, J. | Monograph or Collective Volume | De La Salle Congregation | 1980 |
| Irish Diaspora | Barr, Colin | Article in Book | Oxford University Press | 2003 |
| Irish diaspora Catholicism in North America | Doyle, David | Article in Book | | 2013 |
| Irish diocesan priests in southern Nigeria, 1920-42 | Cooke, Colm M., Rev. | Thesis | | 1971 |
| Irish Dominicans at Lisbon before 1700 : a biographical register | | Article in Journal | | 2000 |
| Irish Dominicans at Louvain before 1700 : a biographical register | | Article in Journal | | 2001 |
| Irish ecclesiastical history and the papal archives : 2, the archives of the Sacred Congregation de Propaganda Fide | Millett, Benignus | Article in Journal | | 1956 |
| Irish ecclesiastical history and the papal archives : 3, the archives of the Nunziatura di Fiendra | Giblin, Cathaldus | Article in Journal | | 1956 |
| Irish ecclesiastical history and the papal archives, introduction | Corish, Patrick J. | Article in Journal | | 1956 |
| Irish ecclesiastical history since 1500 | Corish, Patrick J. | Article in Book | | 1981 |
| Irish education : a history of educational institutions | Atkinson, Norman | Monograph or Collective Volume | Figgis | 1969 |
| Irish education and the legacy of O’Connell | Fleming, BrianHarford, Judith | Article in Journal | | 2016 |
| Irish education transformed | Andrews, P. | Article in Journal | | 1997 |
| Irish emigrant and missionary education : a history | Murphy, Daniel | Monograph or Collective Volume | Four Courts | 2000 |
| Irish emigration to Castille in the opening years of the seventeenth century | O'Scea, Ciaran | Article in Book | | 2004 |
| Irish entrants to the Congregation of the Mission, 1625-60: prosopography and sources | Forrestal, Alison | Article in Journal | | 2009 |
| Irish entries in the baptism and death registers of the parochial archive of San Justo y Pastor, Madrid (1609-1659) | Hernanz Elvira, Óscar | Article in Journal | | 2017 |
| Irish episcopal meetings, 1788-1882 : a juridico-historical study | Cannon, Sean | Monograph or Collective Volume | Pontifical University | 1979 |
| Irish exiles in Catholic Europe | Giblin, Cathaldus | Article in Book | | 1968 |
| Irish fondations and boursiers in early modern Paris, 1682-1793 | Chambers, Liam | Article in Journal | | 2008 |
| Irish form of preparation for Sunday mass in the eighteenth century | Hawkes, William | Article in Journal | | 1955 |
| Irish Franciscan archbishop of Dublin : Thomas Fleming, 1623-1655 | Barrett, Fergus | Article in Journal | | 1941 |
| Irish Franciscan bishops | Mooney, Canice | Article in Journal | | 1949 |
| Irish Franciscan mission to Scotland, 1619-46 : documents from Roman archives | | Monograph or Collective Volume | Assisi Press | 1964 |
| Irish Franciscan networks at home and aborad, 1607-1640 | O'Connor, Thomas | Article in Book | | 2010 |
| Irish Franciscan provincials | Mooney, Canice | Article in Journal | | 1963 |
| Irish Franciscan Seraphic Colleges - particularly Multyfarnham and Gormanstown | Conlan, Pat, OFM | Article in Journal | | 2015 |
| Irish Franciscans and the Santiago Province of Spain | Hazard, Benjamin | Article in Book | NA | 2020 |
| Irish Government lists of Catholic personnel, c.1613 [with index] | Mac Cuarta, Brian | Article in Journal | | 2015 |
| Irish history and papal archives | Corish, Patrick J. | Article in Journal | | 1954 |
| Irish identity and the future of Catholicism | Coll, Niall | Article in Book | | 2013 |
| Irish immigrants and radical movements in the West of Scotland in the early nineteenth century | McCaffrey, J. F. | Article in Journal | | 1988 |
| Irish immigrants and Scottish radicalism 1880-1906 | Wood, Ian S. | Article in Book | | 1978 |
| Irish immigrants in Scotland : their priests, politics and parochial life | Walker, W. M. | Article in Journal | | 1972 |
| Irish immigration and settlement in a Catholic city : Quebec, 1842-61 | Grace, Robert J. | Article in Journal | | 2003 |
| Irish immigration and the Canadian church before the middle of the 19th century | Cooper, John Irwin | Article in Journal | | 1955 |
| Irish immigration and the Catholic 'Welsh District' 1840-1850 | O'Leary, Paul | Article in Book | NA | 1988 |
| Irish immigration into mid-nineteenth-century Hull | Gibbons, Jo | Article in Book | | 1999 |
| Irish influences in early Melbourne | Strauss, Valda | Article in Journal | | 1996 |
| Irish intellectuals and independent Czechoslovakia in the Interwar period : reflections in Catholic journals | Zách, Lili | Article in Book | Peter Lang | 2014 |
| Irish Irenics | Boyd, Andrew, 1921- | Article in Journal | | 1992 |
| Irish Jansenists, 1600-70 : religion and politics in Flanders, France, Ireland and Rome | O'Connor, Thomas | Monograph or Collective Volume | Four Courts | 2008 |
| Irish Jesuit Annual Letters, 1604-1674 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2019 |
| Irish Jesuit archives | O'Donoghue, Fergus | Article in Journal | | 1986 |
| Irish Jesuits among the wild Batonga | McSweeney, Joseph | Monograph or Collective Volume | Irish Messenger Publications | 1954 |
| Irish Jesuits and the evolution of religious controversy: an episode from the 1630s | Jackson, Brian | Article in Book | | 2022 |
| Irish Labour in a Time of Revolution | Newsinger, John | Article in Journal | | 2002 |
| Irish links to Charleville in the 17th century | Ó hAnnracháin, Eoghan | Article in Journal | | 2016 |
| Irish links with Bishop Challoner | Brady, John, d.1963 | Article in Journal | | 1946 |
| Irish links with Compostella | Hayes, Richard Francis | Article in Journal | | 1948 |
| Irish links with Santa Maria dell'Anima in Rome | Ó Fearghail, Fearghus | Article in Journal | | 2009 |
| Irish material in Fondo Santa Sede, Madrid | Mac Curtain, Benvenuta | Article in Journal | | 1963 |
| Irish migrants and the recruitment of Catholic sisters in Glasgow, 1847-1878 | Lehoe, S. Karly | Article in Book | | 2009 |
| Irish migration and settlement in Victorian England : a small-town perspective | Herson, John | Article in Book | | 1989 |
| Irish missionaries in Bengal, 1834-59 | Finegan, Francis | Article in Journal | | 1963 |
| Irish missionaries in Liberia | Concannon, Helena | Article in Journal | | 1947 |
| Irish missions to Africa | Needham, Ciaran | Article in Journal | | 1961 |
| Irish names in the Malines ordination registers, 1602-1794 | Jennings, Brendan | Article in Journal | | 1952 |
| Irish names in the Ordination registers of the diocese of Ghent, 1559-1802 | Nilis, Jeroen | Article in Journal | | 2006 |
| Irish nationalism : a history of its roots and ideology | Cronin, Seán | Monograph or Collective Volume | Irish Academic Press | 1980 |
| Irish nationalism and Irish Catholicism: a study in cultural identity | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1973 |
| Irish nationalism and the British state : from repeal to revolutionary nationalism | Jenkins, Brian A. | Monograph or Collective Volume | McGill-Queen's University Press | 2006 |
| Irish nationalism and the demise of the Papal States, 1848-71 | Ramón, Marta | Article in Book | | 2014 |
| Irish newspapers and the Spanish Civil War | McGarry, Fearghal | Article in Journal | | 2002 |
| Irish oblate and naval chaplain : Father Stewart Phelan and the Battle of Jutland | Hagerty, James | Article in Book | | 2015 |
| Irish Orphans and the Politics of Domestic Authority | Clark, Anna | Article in Book | | 2009 |
| Irish parliamentary elections and the influence of the Catholic vote, 1801-20 | Jupp, Peter, 1940-2006 | Article in Journal | | 1967 |
| Irish peasant society | Connell, Kenneth Hugh | Monograph or Collective Volume | Clarendon Press | 1968 |
| Irish peasant society : four historical essays | Connell, Kenneth Hugh | Monograph or Collective Volume | Irish Academic Press | 1996 |
| Irish pensioners of the French clergy, 1686-1778 | Finegan, Francis | Article in Journal | | 1966 |
| Irish pilgrimage : holy wells and popular Catholic devotion | Carroll, Michael P. | Monograph or Collective Volume | Johns Hopkins University Press | 1999 |
| Irish pilgrimage : the different tradition | Nolan, Mary Lee | Article in Journal | | 1983 |
| Irish poetry and the clergy | Ó Fiaich, Tomás | Article in Book | | 1975 |
| Irish politics in Manchester, 1890-1914 | Fielding, Steven | Article in Journal | | 1988 |
| Irish politics on parade : the clergy, national societies, and St. Patrick's Day processions in nineteenth-century Montreal and Toronto | Trigger, Rosalyn | Article in Journal | | 2004 |
| Irish preachers and confessors in the archdiocese of Malines, 1607-1794 | | Article in Journal | | 1960 |
| Irish priests and students in revolutionary France | Swords, Liam | Article in Book | | 1997 |
| Irish priests in Spanish Natchez | Holmes, Jack D. L. | Article in Journal | | 1967 |
| Irish priests in the diocese of Quebec in the nineteenth century | O'Gallagher, Marianna | Article in Journal | | 1983 |
| Irish priests in the Highlands : judicial evidence from Argyll | Macdonald, Fiona A. | Article in Journal | | 1995 |
| Irish priests in the north-east in the eighteenth century | Nicholson, W. J. | Article in Journal | | 1984 |
| Irish priests in the north-east in the nineteenth century | Nicholson, W. J. | Article in Journal | | 1985 |
| Irish priests in the United States : a vanishing subculture | Smith, William L. | Monograph or Collective Volume | University Press of America | 2004 |
| Irish priests transported under the Commonwealth | | Article in Journal | | 1949 |
| Irish printing in the early seventeenth century | Gillespie, Raymond | Article in Journal | | 1988 |
| Irish Protestants in the Theatre of the World: The Apostolic Hospice for the Converting, Rome, 1677–1745 | Carroll, Clare Lois | Article in Book | | 2019 |
| Irish public opinion and the Risorgimento, 1859-60 | O'Brien, Jennifer | Article in Book | | 2014 |
| Irish Question or Irish Connection? Irish Catholics in North America through the “Roman” lens | Sanfilippo, Matteo | Article in Book | | 2019 |
| Irish radicalism and the Roman Catholic church in Quebec and Ireland, 1833-1834 : O'Callaghan and O'Connell compared | Slattery, Maureen | Article in Journal | | 1997 |
| Irish religious opinion on the American Civil War | Hernon, Joseph M. | Article in Journal | | 1964 |
| Irish saints for boys and girls | Curtayne, Alice | Monograph or Collective Volume | Talbot Press | 1955 |
| Irish saints in a Regensburg litany | Ó Riain, PádraigÓ Riain-Raedel, Dagmar | Article in Book | | 2015 |
| Irish schools for Canada : Arthur Buller to the bishop of Quebec, 1838 | Curtis, Bruce | Article in Journal | | 2001 |
| Irish Scotists at St Isidore's College, Rome in the seventeenth century | Millett, Benignus | Article in Book | | 1968 |
| Irish seminaries in the eighteenth century | Dowling, Edward | Article in Journal | | 1941 |
| Irish Sisters of Mercy in the Crimean war | Bolster, Ellen | Thesis | | 1959 |
| Irish soldiers and the Irish College in Paris, 1706-1791 | Walsh, Micheline | Article in Book | | 1978 |
| Irish students in the Netherlands 1650-1750 | Mijers, Esther | Article in Journal | | 2005 |
| Irish students of medicine at Leiden | Froggatt, Peter | Article in Book | | 1992 |
| Irish students ordained in Rome (1625-1710) | Egan, Bartholomew, OFMGiblin, CathaldusMcGrath, Cuthbert | Article in Journal | | 1943 |
| Irish studies, cultural pluralism and the peace process | Finlay, Andrew | Article in Journal | | 2007 |
| Irish swordsmen in Flanders, 1586-1610. 1, Stanley's regiment, 1586-1587; 2, Independent Irish companies and the regiment of Henry O'Neill. | Jennings, Brendan | Article in Journal | | 1948 |
| Irish textures in American Catholicism | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1992 |
| Irish travellers at Knock : contesting sacred space | Brownlee, Attracta M. | Article in Journal | | 2011 |
| Irish tridentine catholicism in Victorian Toronto : vessel for ethno-religious persistence | Nicolson, Murray W. | Article in Journal | | 1983 |
| Irish Victorian churches : denominational distinctions | Rowan, Alistair | Article in Book | | 1994 |
| Irish votes and Yankee cotton : the constitution of 1853 | O'Connor, Thomas H. | Article in Journal | | 1983 |
| Irish women and the creation of modern Irish Catholicism | Delay, Cara | Monograph or Collective Volume | Manchester University Press | 2019 |
| Irish women in religious orders, 1530-1700 : suppression, migration and integration | McShane, Bronagh Ann | Monograph or Collective Volume | Boydell Press | 2022 |
| Irish women religious and their convent high schools in nineteenth-century Australia | MacGinley, Rosa | Article in Journal | | 2010 |
| Irish women's athletics and the Olympic games | Naughton, Lindie | Article in Journal | | 2012 |
| Irish women’s involvement in Birmingham’s union of Catholic mothers, 1948–1978 | O'Brien, Sarah | Article in Journal | | 2013 |
| Irish workers on Tyneside in the 19th century | MacDermott, T. P. | Article in Book | | 1977 |
| Irish, Catholic and scouse : the history of the Liverpool-Irish, 1800-1939 | Belchem, John | Monograph or Collective Volume | Liverpool University Press | 2007 |
| Irish, Scottish and Welsh responses to centralisation, c.1530-c.1640 : a comparative perspective | Canny, Nicholas P. | Article in Book | | 1995 |
| Irish-American attitudes and the americanization of the English-language parochial school | Weisz, Howard | Article in Journal | | 1972 |
| Irish-American Catholic conservatives and Northern Ireland | McCarthy, John | Article in Journal | | 1987 |
| Irish-American Catholics and the quest for respectability in the coming of the Great War, 1900-1917 | Rowland, Thomas J. | Article in Journal | | 1996 |
| Irish-American geography of Catholics surnamed O'Sullivan | O'Sullivan, Patrick | Article in Journal | | 1988 |
| Irish-American teachers and the struggle over American urban public education, 1890-1920 : a preliminary look | Nolan, Janet | Article in Journal | | 1992 |
| Irish-Americans : identity and assimilation | Fallows, Marjorie R. | Monograph or Collective Volume | Prentice-Hall | 1979 |
| Irish-Americans and the 1916 election : an episode in immigrant adjustment | Cuddy, Edward | Article in Journal | | 1969 |
| Irish-Americans and the fight for treaty ratification | Maxwell, Kenneth R. | Article in Journal | | 1967 |
| Irish-Americans, native rights and national empires | Doyle, David Noel | Monograph or Collective Volume | Arno P. | 1979 |
| Irish-born champion of the Mexican-Americans | Weber, Francis J. | Article in Journal | | 1970 |
| Irish-born priests who studied in the American College of Louvain between 1860 and 1971 | Canning, Joe | Article in Journal | | 2019 |
| Irish-born secular priests in Scotland, 1829-1979 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | The author | 1979 |
| Irish-language sources for Irish Catholic identity since the early modern period : a brief survey | Ó Ciardha, Éamonn | Article in Book | | 2013 |
| Irishman or English soldier? : the case of a Waterford man enlisting in the 16th (Irish) Division in 1915 | Dooley, Thomas P. | Thesis | | |
| Irishmen or English soldiers? The times and world of a southern Catholic man (1876-1916) enlisting in the British army during the First World War | Dooley, Thomas P. | Monograph or Collective Volume | Liverpool University Press | 1995 |
| Irishmen ordained at Lisbon, 1660-1739 | Fenning, Hugh | Article in Journal | | 1993 |
| Irishmen ordained at Lisbon, 1740-1850 | | Article in Journal | | 1994 |
| Irishmen ordained at Prague 1628-1700 : additions and corrections to Matthäus Hösler's list | Millett, Benignus | Article in Journal | | 1998 |
| Irishmen ordained at Prague, 1629-1786 | Hösler, Matthäus | Article in Journal | | 1991 |
| Irishmen ordained at Rome, 1572-1697 | | Article in Journal | | 2005 |
| Irishmen ordained at Rome, 1698-1759 | | Article in Journal | | 1996 |
| Irishmen ordained at Rome, 1760-1800 | | Article in Journal | | 1997 |
| Irishmen, elites and reformers : behavioral continuities in nineteenth-century anti-Catholicism | Kolesar, RobertManfra, Jo Ann, | Article in Journal | | 1994 |
| Irlanda del Norte : historia del conflicto | Sierra, Luis Antonio | Monograph or Collective Volume | Silex | 1999 |
| Irlanda en Alcalá : la comunidad Irlandesa en la universidad de Alcalá y su proyección Europea, 1579-1785 | Recio Morales, Óscar | Monograph or Collective Volume | Fundación Colegio del Rey | 2004 |
| Irlanda y la monarquía hispánica : Kinsale 1601-2001 - guerra, política, exilio y religión | | Monograph or Collective Volume | Universidad de Alcalá. Consejo Superior de Investigaciones Científicas | 2002 |
| Irlandskaya politika Yakova II i predposylki 'Slavnoi revolutsii v Anglii | Telegina, E. F. | Monograph or Collective Volume | Izd. Gor 'Kovskogo universiteta | 1980 |
| Is iad is abhar glóirithe dom | Ó Láimhín, Peadar | Article in Book | | 2000 |
| Isabella Croke : a nurse for the Catholic cause during the Crimean War | Doona, Mary Ellen | Article in Book | | 1997 |
| Island of slow division : the religious situation | Gallagher, Michael Paul, SJ | Article in Journal | | 1986 |
| It was in human nature to love one’s native land and make sacrifices for it’ | Wooding, M. Jonathan | Article in Journal | | 2007 |
| Italy and the Holy See | Keogh, AoifeKeogh, Dermot | Article in Book | | 2013 |
| J. G. McGarry - a reminiscence | Meehan, Molaise | Article in Journal | | 1981 |
| J. K. L.'s letter on the union of churches | McNamee, Brian | Article in Journal | | 1969 |
| J. L. P. O’Hanly, Irish Catholic nationalism, and Canadian state colonialism in the nineteenth century | | Article in Journal | | 2014 |
| J.C.R. Lardner MP, a forgotton Middle-Irelander | McRoe, Malachy | Article in Journal | | 2014 |
| J.J. O'Kelly ('Sceilg') and the Catholic Bulletin: cultural considerations, Gaelic, religious and national, c.1898-1926 | Murphy, Brian | Thesis | | 1987 |
| Jacobite births, marriages and deaths in the parochial registers of Bar-le-Duc (1713-1715) | Richard-Maupillier, Frédéric | Article in Journal | | 2017 |
| Jacobitism and Catholic Loyalists | Ó Ciardha, Éamonn | Article in Book | Oxford University Press | 2023 |
| Jacobitism and the third and fourth earls of Antrim | McDonnell, Hector | Article in Journal | | 1985 |
| Jacobitism in eighteenth-century Ireland : a Munster perspective | Dickson, David | Article in Journal | | 2004 |
| Jacobitism, Catholicism and the Irish Protestant elite, 1700-1710 | Doyle, Thomas | Article in Journal | | 1997 |
| Jacobitism, Loyalty, and the State, 1746-1766 | Brown, Carys | Article in Book | Oxford University Press | 2023 |
| James Alypius Goold, O.S.A., first archbishop of Melbourne | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1988 |
| James Anderson and the Drogheda pilgrimage to Knock 1880 | O'Donovan, Iggy | Article in Journal | | 1998 |
| James Archer and the Jesuit mission to Ireland, 1597-1602 | Morrissey, Thomas | Thesis | | 1970 |
| James Archer of Kilkenny : an Elizabethan Jesuit : first rector of the Irish College at Salamanca and ally of the great Hugh O'Neill | Morrissey, Thomas J. | Monograph or Collective Volume | Studies, Special Publication | 1979 |
| James Augustine Anderson, O.S.A., 1837-1903 | Dwyer, Catherine Mary | Article in Journal | | 1974 |
| James Browne, Bishop of Kilmore, 1829-65 | Kerr, Donal A. | Article in Journal | | 1983 |
| James Caulfield Bishop of Ferns 1786-1814 | Corish, Patrick J. | Article in Journal | | 1996 |
| James Charles McGuigan : first cardinal from English Canada | McGuigan, Peter | Article in Book | | 1988 |
| James Dalton : mayor of Orange and papal knight | Anonymous | Article in Journal | | 1988 |
| James Dixon and Jeremiah O'Flynn, two prefects apostolic in Australia | Giblin, Cathaldus | Article in Journal | | 1983 |
| James Doyle (J.K.L.), bishop of Kildare and Leighlin, and the Roman Catholic relief movement, 1822-5 | Power, Conleth J. | Thesis | | 1968 |
| James Duffy and Catholic nationalism | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2011 |
| James Duhig | Boland, T. P. | Monograph or Collective Volume | University of Queensland Press | 1986 |
| James Gallagher's Irish sermons (1736) | Mac Murchaidh, Ciarán | Article in Book | | 2013 |
| James II : a study in kingship. | Miller, John | Monograph or Collective Volume | | 1989 |
| James Joyce and the soul of Irish Jesuitry | Dening, Greg | Article in Journal | | 2008 |
| James Martineau and the Catholic spirit amid the tensions of Dublin, 1828-1832 | Waller, Ralph | Article in Book | | 1989 |
| James Martineau and the Catholic spirit amid the tensions of Dublin, 1828-32 | Walker, Ralph S. | Article in Book | | 1989 |
| James Murphy, bishop of Clogher, 1801-24 | Ó Dufaigh, Seosamh | Article in Journal | | 1968 |
| James Naughton, Bishop of Killala, 1911-1950 : the man, his life, in particular his laws | Rogan, Eddie | Article in Journal | | 1992 |
| James Ussher and his Irish manuscripts | Cunningham, BernadetteGillespie, Raymond | Article in Journal | | 2005 |
| James Ussher, archbishop of Armagh | Knox, Robert Buick | Monograph or Collective Volume | | 1967 |
| James Ussher, Francis Barnaby and Blessed Conor O'Devany, January-February 1612 | Millett, Benignus | Article in Journal | | 1996 |
| James Vincent Cleary (1828-1898) | O'Neill, Assumpta | Article in Journal | | 2000 |
| Jeers, Jingo and Jesuits. Britishness, Edmund Burke, and Crises of Empire in eighteenth-century Britain | Pettinato, Jonathan | Article in Journal | | 2015 |
| Jenkinstown oratory | Brennan, John | Article in Journal | | 1993 |
| Jeremiah Donovan's translation of the Roman catechism | Ó Súilleabháin, Pádraig | Article in Journal | | 1970 |
| Jeremiah John Purcell O'Reily, O.F.M. Cap. : apostle in Wellington, New Zealand | Duggan, Eileen | Article in Journal | | 1959 |
| Jesuit conversions in Wentworth’s Ireland: the Slingsby family, County Cork, in the 1630s | Mac Cuarta, Brian | Article in Book | | 2022 |
| Jesuit Finances in Restoration Ireland: a relational network analysis | Foerster, Martin
| Article in Journal | | 2021 |
| Jesuit parish mission memoirs 1863-76, part III | Laheen, Kevin A. | Article in Journal | | 2000 |
| Jesuitische Finanzen im Irland der Restaurationsepoche | Foerster, Martin | Article in Journal | | 2016 |
| Jesuits in Hong Kong, South China, and beyond, 1926-2006 | Morrissey, William J. | Monograph or Collective Volume | Xavier Publishing Association | 2008 |
| Jewish and Catholic Irish Relations : The Glasgow Waterfront c.1880-1914 | Kenefick, William | Article in Journal | | 2006 |
| John and James Toohey : brewers | Anonymous | Article in Journal | | 1988 |
| John Bagwell: politician and landlord (1811-1883) | O'Donnell, Seán | Article in Journal | | 2017 |
| John Bale's non-dramatic works of religious controversy | Pineas, Rainer | Article in Journal | | 1962 |
| John Boylan, influential nineteenth-century Kilmore priest | Sullivan, Tom | Article in Journal | | 2012 |
| John Burke (De Burgh), archbishop of Tuam, 1647-1667 | Claffey, Tony | Article in Journal | | 2014 |
| John Butler, baron of Dunboyne and bishop of Cork 1763-1787 | O'Mahony, Eoin | Article in Journal | | 1969 |
| John Callaghan and the controversies among the Irish in Paris, 1648-54 | Corish, Patrick J. | Article in Journal | | 1954 |
| John Cardinal McCloskey | Mullan, Desmond | Article in Journal | | 1979 |
| John Carroll and Louisiana | Melville, Annabelle M. | Article in Journal | | 1978 |
| John Charles McQuaid : archbishop of Dublin, 1940-72 | McMahon, Deirdre | Article in Book | | 2000 |
| John Charles McQuaid : ruler of Catholic Ireland | Cooney, John | Monograph or Collective Volume | O'Brien Press | 1999 |
| John Charles McQuaid and the failure of youth sodalities, 1956-60 | Holohan, Carole | Article in Book | Columba | 2012 |
| John Colgan (1592-1992) | Byrne, Connall | Monograph or Collective Volume | The author | 1992 |
| John Colgan as editor | Bieler, Ludwig | Article in Journal | | 1948 |
| John Copinger and the counter-reformation : the writings of a forgotten exile from Ireland | Highley, Christopher | Article in Journal | | 2001 |
| John Elmsley and the rise of Irish catholic social action in Victorian Toronto | Nicolson, Murray W. | Article in Journal | | 1984 |
| John England of Charleston - Carlow's greatest Corkman | Lynch, Martin | Article in Journal | | 1999 |
| John Garzia, a noted priest-catcher and his activities, 1717-23 | MacGrath, Kevin. | Article in Journal | | 1949 |
| John Gorman (1820-1846) | Mitchell, Kilian J. | Article in Journal | | 2001 |
| John Henry Newman : centenary essays | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Burns & Oates | 1945 |
| John Henry Newman and Frank Duff | Kennedy, F. | Monograph or Collective Volume | Praedicanda Publications | 1982 |
| John Henry Newman and the Roman oratory | Foley, Brian C. | Article in Journal | | 2000 |
| John Henry Newman et l'Universite catholique d'Irlande. Parts 1-2 | Abalain, Hervé | Article in Journal | | 1981 |
| John Henry Newman's Breviary | Ó Muirí, Réamonn | Article in Journal | | 2013 |
| John Hogan and radical Irish nationalism, 1916-1930 : a study in political Catholicism | Keogh, Dermot | Article in Book | | 2008 |
| John Hogan and the Catholic religious revival | Turpin, John | Article in Journal | | 1979 |
| John Hughes and a catholic response to slavery in antebellum America | Sharron, W. B. | Article in Journal | | 1972 |
| John Hume and the SDLP : impact and survival in Northern Ireland | Murphy, Gerard | Monograph or Collective Volume | Irish Academic Press | 1998 |
| John Ireland and the American Catholic church | O'Connell, Marvin R. | Monograph or Collective Volume | Minnesota University Press | 1988 |
| John Johnston, 1846-1913: Dundalk Poor Law Guardian, 1877; Justice of the Peacer, 1893; and Louth County Councillor, 1899 | Johnston, Don | Article in Journal | | 2014 |
| John Joseph Hughes (1797-1864), first archbishop of New York | Canning, B. J. (Bernard J.) | Article in Journal | | 1964 |
| John Kavanagh as hedge school wonder boy | Noël, Jean C. | Article in Journal | | 1982 |
| John Kent's report on the state of the Irish mission, 1742 | | Article in Journal | | 1966 |
| John Lynch and renaissance humanism in Stuart Ireland: Catholic intellectuals, Protestant noblemen and the Irish 'Respublica' | Campbell, Ian W. S. | Article in Journal | | 2010 |
| John MacEvilly, 1816-1902 | Bane, Liam | Thesis | | 1979 |
| John MacHale and John MacEvilly : conflict in the 19th century Catholic hierarchy | Bane, Liam | Article in Journal | | 1984 |
| John MacHale, archbishop of Tuam | Costello, Nuala | Monograph or Collective Volume | Talbot Press | 1939 |
| John MacHale, Henry Cooke and the curious demise of the confessional state in Ireland | Miller, David W. | Article in Book | | 2010 |
| John McColgan (1592-1992) | Byrne, Connall | Article in Journal | | 1992 |
| John McEnery - Limerick priest - palaeontologist, 1796-1841 | Newman, Jeremiah | Article in Book | | 1967 |
| John McHale and John MacEvilly : conflict in the nineteenth- century Catholic hierarchy | Bane, Liam | Article in Journal | | 1984 |
| John McHale, 1791-1881 | McHale, Edward | Article in Book | | 1983 |
| John McHale, Archbishop of Tuam | Lyons, John | Article in Journal | | 1984 |
| John Miley and the crisis at the Irish College, Paris, in the 1850s | Moran, Gerard | Article in Journal | | 1996 |
| John Milner, history and Ultramontanism | Leighton, Cadoc | Article in Journal | | 2010 |
| John Murphy and educational publishing in the early nineteenth century | Cronin, Neil | Article in Journal | | 2021 |
| John O'Kane (Senior), farmer. Maine townland, Drumsurn, Co. Derry, 1781-1865 | Bryson, P.Higgins, M. A. | Article in Journal | | 2007 |
| John Ponce's response to Kenelm Digby's 'A discourse concerning infallibility in religion' (Paris, 1652) | | Article in Journal | | 2012 |
| John Punch, Scotist holy war, and the Irish Catholic revolutionary tradition in the seventeenth century | Campbell, Ian W. S. | Article in Journal | | 2016 |
| John Redmond and Irish Catholic loyalism | McConnel, James | Article in Journal | | 2010 |
| John Reilly and the San Patricios | Lavelle, Rory | Article in Journal | | 1995 |
| John Shanley : North Dakota's first catholic bishop | Duchschere, Kevin A. | Article in Journal | | 1979 |
| John Steiner: Margaret Aylward's 'venerable worker for the cause of poor children' | Regan, Ethna | Article in Book | | 2012 |
| John Sweetman - a 1798 connection with Churchtown and Taney, County Dublin | Magee, Sean | Article in Journal | | 2013 |
| John T. McNicholas in the age of practical thomism | Avella, S. M. | Article in Journal | | 1986 |
| John Thomas Troy, Archbishop of Dublin, 1786-1823 : a man of his times | O'Donoghue, Patrick | Article in Book | | 1990 |
| John Thomas Troy, archbishop of Dublin, and the establishment of St. Patrick's College, Maynooth, 1791-5 | McNally, Vincent J. | Article in Journal | | 1981 |
| John Verdon, Clonmore, Co. Louth, parish priest of Drogheda, bishop of Ferns (1709-28) | | Article in Journal | | 1980 |
| John Wheatley, Catholic socialism and Irish labour in the West of Scotland, 1906-1924 | Gunnin, G. C. | Monograph or Collective Volume | Garland | 1987 |
| John Wheatley, the Irish and the Labour Movement in Scotland | Wood, Ian S. | Article in Journal | | 1980 |
| John's Lane | Butler, Thomas | Monograph or Collective Volume | St John's Priory | 1983 |
| Jolly beggars : Irish priests fundraising abroad | Roddy, Sarah | Article in Book | | 2015 |
| Joseph Devlin and the Catholic Representation Association of Belfast, 1895-1905 | Whitford, F. J. | Article in Journal | | 1957 |
| Joseph Dixon and the archdiocese of Armagh, 1852-1866 | McKinney, Amy | Thesis | | 2008 |
| Joseph O'Halloran, S.J. | Hannan, Kevin | Article in Journal | | 1989 |
| Jottings from Maynooth records | Scrutator | Article in Journal | | 1940 |
| Journal | O'Farrell, James | Article in Journal | | 1974 |
| Journal of Monsignor O'Farrell, parish priest of Ardagh 1859-1919 | Anonymous | Article in Journal | | 1973 |
| Journal of the Very Rev. Rowland Davies, LL.D., dean of Ross, and afterwards dean of Cork, from March 8, 1688/9, to September 29, 1690. | Caulfield, RichardDavies, Rowland, 1649-1721 | Monograph or Collective Volume | | 1857 |
| Joyce and the Jesuits | Devlin-Glass, Frances | Article in Journal | | 2008 |
| Joyful mother of children : Mother Francis Mary Teresa Ball | Loreto, A. | Monograph or Collective Volume | Gill | 1961 |
| Judge William Nicholas Keogh | Naughton, Mary | Article in Journal | | 1981 |
| Judge, Jury, Magistrate and Soldier: rethinking law and authority in late eighteenth-century Ireland | Murphy, Kathleen S. | Article in Journal | | 2000 |
| Judith Wogan-Browne (1756-1848). The life, the family and the legacy of a remarkable woman | McQuinn, Christopher P. | Article in Journal | | 2017 |
| Juring and non-juring priests | Brady, John, d.1963 | Article in Journal | | 1943 |
| Justified by faith : an Irish missionary experience in Malawi | Hanley, Angela | Monograph or Collective Volume | St Patrick's Missionary Society | 2002 |
| Kate O'Brien and the Erotics of Liberal Catholic Dissent | Cronin, Michael | Article in Journal | | 2010 |
| Katherine Butler R.S.C. (obituary) | Behan, A. P. | Article in Journal | | 2000 |
| Katherine Hughes: A Life and a Journey | Ó Siadhail, Pádraig | Monograph or Collective Volume | Penumbra Press | 2014 |
| Keash and Culfadda : a local history | | Monograph or Collective Volume | Keash-Culfadda Local History Committee | 2001 |
| Keeping the faith : the Catholic Church and education in Northern Ireland and the U.S.A. | Fraser, Grace | Article in Book | | 2001 |
| Keeping the faith at Gormanston, 1569-1629 | Brady, John, d.1963 | Article in Book | | 1957 |
| Kerry diocese in 1890 : Bishop Coffey's survey | De Brún, Pádraig | Article in Journal | | 1989 |
| Kerry's ancient see and shrine, Ardfert-Brendan | Nunan, Francis | Monograph or Collective Volume | Kerryman | 1950 |
| Kevin : a portrait of Archbishop Kevin McNamara | Power, Louis | Monograph or Collective Volume | [s.n.] | 1993 |
| Kicking with the left foot : being Catholic in Scotland | Reilly, Patrick | Article in Book | | 2000 |
| Kilbrogan Church & Graveyard | Desmond, John | Article in Journal | | 2013 |
| Kilcock Christian Brothers | Rochfort, Jim | Article in Book | | 1999 |
| Kilcormac parish : celebrating 150 years of the Church of the Nativity of the B.V.M. | Kilcormac Parish Committee | Monograph or Collective Volume | Kilcormac Parish Committee | 2018 |
| Kildare and Leighlin Roman Catholic Chaplains in World War I 'If the men can't go to the church then the church must go to the men' | Power, Anne | Article in Journal | | 2016 |
| Kildare Hall, the countess of Kildare's patronage of the Jesuits, and the liturgical setting of Catholic worship in early seventeenth-century Dublin | Loeber, RolfStouthamer-Loeber, Magda | Article in Book | | 2006 |
| Kilkenny's short-lived university (Feb-July 1690) | Leonard, John | Article in Journal | | 1988 |
| Killala diocese : 1835-1839 | MacHale, E. | Article in Journal | | 1985 |
| Killala diocese in 1830-1831 | MacHale, E. | Article in Journal | | 1982 |
| Killala diocese in 1832 to 1834 | MacHale, E. | Article in Journal | | 1983 |
| Killasser: heritage of a Mayo parish | O'Hara, Bernard | Monograph or Collective Volume | Killasser Callow Heritage Society | 2011 |
| Killeenbrenan Friary: Flag-ship house of the Franciscan Third Order in Ireland? | McDermott, Yvonne | Article in Journal | | 2012 |
| Kilmore clergy list of 1723 | Traynor, Owen | Article in Journal | | 1969 |
| Kilmore missionary clergy in nineteenth-century America | Sullivan, Tom | Article in Journal | | 2007 |
| Kilmore priests | McKiernan, Francis | Article in Journal | | 1986 |
| Kilmore priests who have served in other parishes | Kehoe, Tom | Article in Journal | | 2012 |
| Kiltennel Chapel and Graveyard | Ivers, Bobby | Article in Journal | | 2024 |
| Kinsale temperance hall and Canon John O'Mahony | Hickey, N. M. | Article in Journal | | 1986 |
| Knights of St John of Jerusalem | Marmion, William F. K. | Article in Journal | | 1999 |
| Knock | Good, Eileen | Monograph or Collective Volume | Veritas | 2002 |
| Knock 1879-1979 | Rynne, Catherine | Monograph or Collective Volume | Veritas | 1979 |
| Knock : the Virgin's apparition in nineteenth-century Ireland | Hynes, Eugene | Monograph or Collective Volume | Cork University Press | 2008 |
| Knock and its shrine : the story of a famed Irish shrine | Carey, F. P. | Monograph or Collective Volume | Irish Messenger Publications | 1939 |
| Knock marriage introductions | Farragher, Stephen | Article in Book | | 2019 |
| Knock shrine and the Marian year of 1954 | Donnelly, James S., Jr | Article in Book | | 2015 |
| Knock Shrine: the worst of times - the 1940s | Donnelly, James S., Jr. | Article in Journal | | 2013 |
| Konfessionskrieg in Nordirland? : Materialen und Uterrichtvorschläge zum Irischen konflikt | Vogt, Hermann | Monograph or Collective Volume | Calwer | 1973 |
| L'Archivio Segreto Vaticano | Giusti, Martino | Monograph or Collective Volume | | 1978 |
| L'Église catholique irlandaise pendant la Première Guerre mondiale, 1914-1918 | De Wiel, Jérôme aan | Article in Journal | | 2005 |
| L'église d'Irlande, tradition et modernité | Considere-Charon, Marie-Claire | Article in Journal | | 1998 |
| L'Église et la modernisation de l'enseignement du second degré en Irlande au début des années soixante | Elliott, Imelda | Article in Journal | | 2015 |
| L'Emeute Gavazzi : violence et liberte d'expression au milieu du XIX siecle | Breton, Vincent | Article in Journal | | 2006 |
| L'émigration irlandaise et les prêtres irlandais en France | Eliot, François | Article in Book | | 1978 |
| 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 |
| L'Irlande, nation Catholique : problèmes de civilisation | Dillard, V. | Article in Journal | | 1938 |
| La bibliothèque du Collège des Irlandais et son fonds de livres ancien | Caillet, Maurice | Article in Journal | | 1991 |
| La culture des défilés politico-religieux en Écosse : une forme de « culture populaire sectaire »? | Duclos, Nathalie | Article in Journal | | 2007 |
| La experiencia Americana : una perspectiva catolica Irlandesa | Durkin, M. | Article in Journal | | 1977 |
| La fin de al première période du Jansénisme. Sources des années 1654-1660 | Ceyssens, Lucien | Monograph or Collective Volume | Institut Historique Belge de Rome | 1963 |
| La mission Capucine Irlandaise à Sedan, 1639-1654 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1969 |
| La missione di Sir Kenelm Digby all corte di Innocenze X, 1645-1648 | Gabrieli, V. | Article in Book | | 1954 |
| La notion de neutralité de l'État (séperation Église/État) dans le discours politique irlandais en matière d'éducation : entre confusion sémantique et stratégie d'évitement, années 1970-2000 | Fischer, Karin | Article in Journal | | 2015 |
| La première bulle contre Jansénius : sources relatives à son histoire (1644-1653) | Ceyssens, Lucien | Monograph or Collective Volume | Institut Historique Belge de Rome | 1962 |
| La propagation en Irlande des idées de la révolution française | Calkin, H. L. | Article in Journal | | 1955 |
| La romanità di Daniele O'Connell | Oddone, A. | Article in Journal | | 1948 |
| Labour and the liberal agenda | Bacik, Ivana | Article in Book | | 2012 |
| Labour, church and nationalism in Limerick, 1893-1902 | Collins, Patrick John | Thesis | | 1984 |
| Ladies' Association of Charity of St Vincent de Paul : laying the groundwork for the Daughters of Charity | Keenan, Breege | Article in Book | | 2014 |
| Lady Londonderry and the Irish catholics of Seaham Harbour : "No Popery" out of context | Cooter, R. J. | Article in Journal | | 1976 |
| Lady's day | O'Connell, Margaret | Article in Journal | | 1995 |
| Ladychapel, 1863-2013 | Edwards, Rita | Monograph or Collective Volume | Maynooth Local History Group | 2013 |
| Lageniensis | Scully, Tony | Article in Journal | | 2006 |
| Laity and clergy in the Catholic renewal of Dublin, c.1750-1830 | Begadon, Cormac | Thesis | | 2009 |
| Lake Wadding's Waterford | Byrne, Nial J. | Article in Journal | | 2007 |
| Land and people in Wicklow, 1660-1840 | Gurrin, Brian | Thesis | | 2006 |
| Land owned by Catholics in Ireland in 1688 | Simms, J. G. (John Gerald) | Article in Journal | | 1951 |
| Land questions in modern Ireland | | Monograph or Collective Volume | Manchester University Press | 2013 |
| Landscape and politics | Whelan, Yvonne | Article in Book | | 2014 |
| Landscape and religious practice : a study of Mass attendance in pre-Famine Ireland | Miller, David William, 1940- | Article in Journal | | 2005 |
| Landscapes of south Ulster : a parish atlas of the diocese of Clogher | Duffy, Patrick J. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1993 |
| Language, ethnicity, and region: Rome and the struggle for dominance of the Canadian Catholic Church, 1785–1930 | Murphy, Terrence | Article in Book | | 2019 |
| Language, nationality and cultural identity in the Irish Free State, 1922-7 | O'Callaghan, Margaret | Article in Journal | | 1984 |
| Language, print and the Catholic Church in Ireland, 1700-1900 | Ó Ciosáin, Niall | Article in Book | | 2007 |
| Languages of radicalism, race and religion in Irish nationalism: the French affinity., 1848-1871 | Kelly, Matthew | Article in Journal | | 2010 |
| Larry Doyle and Nova Scotia | Punch, Terence M. | Article in Book | | 1986 |
| Las hermanas de al misericordia (Irlandesas) : apuntes históricos sobre sus cien años en la Argentina, 1856-1956 | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1955 |
| Late in the field : Catholic sisters in twentieth-century Ireland and the new religious history | Mac Curtain, Margaret | Article in Journal | | 1995 |
| Late medieval nunneries of the Irish Pale | Mac Curtain, Margaret | Article in Book | | 2004 |
| Later relations between the Primate Peter Lombard and Hugh O'Neill | Silke, John J. | Article in Journal | | 1955 |
| Launching the counterattack : part II of the Roman Catholic hierarchy and the destruction of Parnellism | Larkin, Emmet | Article in Journal | | 1966 |
| Laurence Nihell (1726-95), bishop of Kilfenora and Kilmacduagh | Mitchell, James | Article in Journal | | 1975 |
| Laurence Richardson, O.P., bishop of Kilmore, 1747-53 | Fenning, Hugh | Article in Journal | | 1968 |
| Law and religion : church-state relations in Ireland from independence to the present day | Hogan, G. W. | Article in Journal | | 1987 |
| Lawrence O'Connor (d.1795) | Chambers, Liam | Article in Book | | 1998 |
| Lay Catholic leadership in the United States | Carey, Patrick | Article in Journal | | 1990 |
| Lay Catholicism and religious policy in Cromwellian Ireland | Cunningham, John, 1984- | Article in Journal | | 2013 |
| Laying the nineteenth-century foundations : contributions from a Catholic and a Protestant scholar in the 1820s | Hill, Jacqueline R. | Article in Book | | 2017 |
| Le Concile Vatican II: étape essentielle dans le processus d'ouverture de l'Eglise catholique d'Irlande | Beaugé de La Roque, Pauline | Article in Journal | | 2013 |
| Le deux vies de la fête patronale | Ó Giolláin, Diarmuid | Article in Book | | 1994 |
| Le guerre di religione in Irlanda : colonizzazioni protestanti e martiri della Chiesa cattolica | Lennon, Colm | Article in Book | | 2001 |
| Le jardin irlandais des supplices : la grande rebellion de 1641 vue à travers les pamphlets anglais | Loupès, Philippe | Article in Book | | 1991 |
| Le lettere inedite di Luca Wadding ad Antonio Caracciolo e la riforma liturgica di Urbano VIII | | Article in Journal | | 1973 |
| Leabhar cuntais Teampaill Mhuire cois Chladaigh, 1727-1738 | Ó hÉideáin, Eustás | Article in Journal | | 1958 |
| Leading from behind? St. Patrick's College, Maynooth and the development of church music in Ireland, 1800 - 1914 | McCarthy, Darina | Article in Book | | 2018 |
| Lecky and the Irish university question | McCartney, Donal | Article in Journal | | 1967 |
| Léiriú Anaman agus altóra: teagasc an Athar de Bhál 2 | Ó Macháin, Pádraig | Article in Journal | | 2008 |
| Leitrim priests in penal times | Logan, Dr. | Article in Journal | | 1946 |
| Leon an Iarthair : aisti ar Sheán Mac Héill, Ardeaspag Thuama 1834-1881 | | Monograph or Collective Volume | Clóchomhar | 1983 |
| Leon Tréada Iúda : an tArdeaspag Seán Mac hÉil, 1791-1881 | Mac Aoidh, Tomás | Article in Book | | 1983 |
| Les catholiques anglais 1850-1950 | Becquet, T. | Article in Journal | | 1951 |
| Les eglises de Belfast pendant la second guerre mondiale | Goldring, Maurice | Article in Journal | | 1991 |
| Les Irlandais en Bretagne 1603-1780 : "invasion", accueil, intégration | Ó Ciosáin, Éamon | Article in Book | | 1994 |
| Les representations de l'Europe chez les elites catholiques de 1957-1985 = representations of Europe by Irish Catholic Elites (1957-1985) | Roque, Pauline Beaugé de la | Thesis | | 2011 |
| Les saints Irlandais hors l'Irlande : étudiés dans le culte et dans la dévotion traditionnelle | Gougaud, Louis | Monograph or Collective Volume | Blackwell Publishers | 1937 |
| Les séminaires Irlandais du continent, la révolution francaise et les origines du collége de Maynooth | Corish, Patrick J. | Article in Journal | | 1998 |
| Let the lantern shine : Presentation, Clonmel, 1813-2013 | | Monograph or Collective Volume | Presentation Sisters | 2014 |
| Let us live for those who love us : faith, family, and the contours of manhood among the Knights of Columbanus in late nineteenth-century Connecticut | Koehlinger, A. L. | Article in Journal | | 2004 |
| Letter from a Novice at St Isidore's College, Rome, in the Early Nineteenth Century and its annotations | Cunningham, John M.
| Article in Journal | | 2021 |
| Letters and papers of Archbishop Ignazio Persico, Papal Commissary to Ireland 1887-8 : Part 3 | O'Callaghan, Edward P. | Article in Journal | | 1996 |
| Letters and papers of Archbishop Ignazio Persico, papal commissary to Ireland 1887-8. Pt. 2 | O'Callaghan, Edward P. | Article in Journal | | 1994 |
| Letters and papers of archbishop Ignazio Persico, papal commissary to Ireland, 1887-1888 | O'Callaghan, Edward P. | Article in Journal | | 1993 |
| Letters from Galway 1772-1805 | | Article in Journal | | 1994 |
| Letters from Maynooth : calendar of letters of Rev. Eugene Conwell, 1798-1805 | | Monograph or Collective Volume | Dundalgan Press | 1942 |
| Letters from the Irish College in Salamanca during the Peninsular Wars (1808-14) | | Article in Journal | | 2011 |
| Letters of a penal priest | | Article in Journal | | 1942 |
| Letters of Charles Bonaventure Maguire O. F. M. (1768-1833) | Faulkner, Anselm | Article in Journal | | 1981 |
| Letters of the Catholic poor: poverty in Independent Ireland, 1920-1940 | Earner-Byrne, Lindsey | Monograph or Collective Volume | Cambridge UP | 2017 |
| Letters on Armagh parish two centuries ago | Ó Fiaich, Tomás | Article in Journal | | 1987 |
| Letters on Armagh parish two centuries ago | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Letters to Pope Innocent IV relating to Ireland | | Article in Journal | | 1959 |
| Letting sleeping dogs lie | Keating, TonyReynolds, Mark | Article in Journal | | 2018 |
| Liam Inglis 1708-78 | Ó Donnabháin, Barra | Article in Journal | | 1998 |
| Liber Lovaniensis : a collection of Irish Franciscan documents, 1629-1717 | | Monograph or Collective Volume | Clonmore & Reynolds | 1956 |
| Liber ruber venerabilis collegii Anglorum de urbe : 1, Annales collegii, pars prima - nomina alumnorum A.D. 1631-1783 | | Monograph or Collective Volume | Catholic Record Society | 1943 |
| Liberal Catholic ideology: an exposition of the political catechism by Thomas Wyse | Heggs, Elizabeth | Article in Journal | | 2007 |
| Liberator : the life and death of Daniel O'Connell 1830-47 | Geoghegan, Patrick M. | Monograph or Collective Volume | Gill and Macmillan | 2010 |
| Liberty and Catholic politics, 1790-1990 | O'Ferrall, Fergus | Monograph or Collective Volume | Freehold Press | 1990 |
| Life and work of Canon Sheehan | McElligott, T.J. | Thesis | | 1942-1943 |
| Life in the Bar Convent : 1686-1900 | Kirkus, Gregory (Sister) | Article in Journal | | 2007 |
| Life in Tudor Limerick: William Good's 'Annual Letter' of 1566 | Houliston, VictorMcCoog, Thomas M. | Article in Journal | | 2016 |
| Life of Blessed Oliver Plunkett, archbishop of Armagh (1625-1681) | Stokes, John F. B. | Monograph or Collective Volume | Catholic Truth Society | 1954 |
| Life of Dean O'Brien, founder of the C.Y.M.S. | Egan, Mary Joan | Monograph or Collective Volume | C.Y.M.S. | 1948 |
| Limerick and Gerald Griffin | Moloney, M. | Article in Journal | | 1940 |
| Limerick and the Eucharistic Congress 1932 | Murphy, Charlotte | Article in Journal | | 2012 |
| Limerick Holy Year exhibition : souvenir catalogue | O'Neill, Patrick | Monograph or Collective Volume | Limerick Leader | 1950 |
| Limerick Jesuits in France | Finegan, Francis | Article in Journal | | 1989 |
| Lion of the west : a biography of John MacHale | Andrews, Hilary | Monograph or Collective Volume | Veritas | 2001 |
| Líontán d’iasgairíbh daoine: aistriúchán leis an Athair Domhnall Ó Súilleabháin (1790-1858). | Ó Súilleabháin, Eoghan | Article in Book | | 2013 |
| List of mass-rocks and altar sites in county Cork | McCarthy, Donogh | Article in Journal | | 1989 |
| Little Irelands | Davis, Graham | Article in Book | | 1989 |
| Liturgy and Music | McElroy, Christopher | Article in Book | Oxford University Press | 2023 |
| Living stones : the history and structure of catholic spiritual life in the United States | Chinnici, J. P. | Monograph or Collective Volume | Macmillan | 1989 |
| Living together, living apart : sectarianism in early modern Ireland | Ford, Alan, 1956- | Article in Book | | 2005 |
| Local disturbances in Ireland | Lewis, George | Monograph or Collective Volume | Tower Books | 1977 |
| Local priest stops panic - disaster averted | Kerrigan ,John | Article in Journal | | 1994 |
| Local relief during the Great Irish Famine, 1845-1850 : the case of Castlebar, County Mayo, 1846-1847 | O'Malley, Michael | Article in Journal | | 1997 |
| Londonderry revisited : a loyalist analysis of the civil rights controversy | Kingsley, Paul | Monograph or Collective Volume | Belfast Publications | 1989 |
| Long conflict and how it ends : Protestants and Catholics in Europe and Ireland | Ruane, Joseph | Article in Journal | | 2021 |
| Longford men in the American Civil War (1861-'65) part I : the chaplains | O'Hara, Aidan | Article in Journal | | 2011 |
| Looking backward : Commodore Barry County Club in Twin Lakes, Wisconsin | Greeley, Andrew M. | Article in Journal | | 1979 |
| Looking down our noses | Ward, Leo | Article in Journal | | 1967 |
| Looking for "Powerful Friends" : Irish and English Political Activity in the Spanish Monarchy (1640-1660) | Pérez Tostado, Igor | Article in Journal | | 2005 |
| Lord Brookeborough and the Andrews' premiership | Barton, Brian, 1944- | Article in Journal | | 1998 |
| Lord Castletown's biographical sketch of Canon Sheehan | Fitzpatrick, Bernard Edward Barnaby, Sir, 2nd Baron Castletown, 1848-1937 | Article in Journal | | 2016 |
| Lord Dunboyne | Kingston, John | Article in Journal | | 1961 |
| Lord Fingall of Killeen Castle and Edward Hay of Wexford : Catholic politics in the late eighteenth and early nineteenth century | Ó hÓgartaigh, Margaret | Article in Journal | | 2007 |
| Lord Galway and the penal laws | Kelly, Patrick | Article in Book | | 1987 |
| Lord John Russell and the Irish Catholics 1829-1852 | Parry, Jonathan Philip | Article in Journal | | 2001 |
| Lordan's Classical Academy, Bandon | Canniffe, Pat | Article in Journal | | 2018 |
| Loreto education in Australia : the pioneering influence of Mother Gonzaga Barry | Kelly, Jane | Article in Book | | 2016 |
| Los capellanes Irlandeses en la colectividad hiberno-argentina durante el siglo xix | Ussher, Santiago M. | Monograph or Collective Volume | [s.n.] | 1954 |
| Los irlandeses y la Inquisición portuguesa (siglos XVI-XVIII) | Mendes Drumond Braga, Isabel M.R. | Article in Journal | | 2001 |
| Lost in Rinuccini's shadow : the Irish clergy, 1645-9 | Ó hAnnracháin, Tadhg | Article in Book | | 2001 |
| Lough Derg : the making of the modern pilgrimage | Donnelly, James S., Jr | Article in Book | | 1995 |
| Lough Derg and its unusual 'guardian' Rev. Alexander Calhoun, grandfather of John Caldwell Calhoun, vice-president of the U.S.A. | Cunningham, John B. 1944-,Whalley, M. A. | Article in Journal | | 1981 |
| Lough Derg, the continent of Europe and the recesses of the mind | Haren, Michael | Article in Journal | | 1994 |
| Loughrea : a parish history | Kelly, Declan | Monograph or Collective Volume | History Press | 2014 |
| Louvain - some Longford connections | Morris, Martin | Article in Journal | | 2007 |
| Louvain papers, 1606-1827 | | Monograph or Collective Volume | Stationery Office for the Irish Manuscripts Commission | 1968 |
| Louvain, St Omer and Douai | Wall, Thomas | Article in Book | | 1949 |
| Lovers of a new place : the founding of Tarrawarra Abbey, Victoria | Casey, Michael | Article in Book | | 2015 |
| Love’s betrayal : the decline of Catholicism and the rise of new religions in Ireland | Mulholland, Peter | Monograph or Collective Volume | Peter Lang | 2019 |
| Loyalism in Australasia, 1788 - 1868 | Davis, Richard P. | Article in Book | | 2014 |
| Lucca Wadding, O.F.M., L'annalista dei Francescani | Casolini, Fausta | Monograph or Collective Volume | Vita e Pensiero | 1937 |
| Lucerna fidelium, leis an Ath. Proinsias Ó Maolmhuaidh | | Monograph or Collective Volume | Institute for Advanced Studies | 1962 |
| Luke Joseph Hooke 1714-96 : an Irish theologian in enlightenment France, 1714-96 | O'Connor, Thomas | Monograph or Collective Volume | Four Courts | 1995 |
| Luke Wadding (1588-1657) : the only Irishman to receive votes on a papal conclave | Bhreathnach, Edel | Article in Journal | | 2007 |
| Luke Wadding - Franciscan student and scholar | Galligan, Lucian | Article in Journal | | 1957 |
| Luke Wadding and the breviary of Urban VIII: a study of the book trade between Rome, the Low Countries and the Spanish empire | Hazard, Benjamin | Article in Journal | | 2013 |
| Luke Wadding, the Irish Franciscans, and global Catholicism | NA | Monograph or Collective Volume | Routledge | 2020 |
| Lurgan Free School 1786-1793 | Gracey, Florence | Article in Journal | | 2010 |
| Luxury and austerity, patronage and charity : landlords and a Galway convent in the nineteenth century | Gilmartin, John Maiben | Article in Book | | 1999 |
| Macaulay's O'Connell | Edwards, Owen Dudley | Article in Book | | 1980 |
| Madame da Cunha prefers her own 'dunghill' to a palace: city lodging and country visiting in early eighteenth-century London | Musielak, Ruth | Article in Journal | | 2011 |
| Magdalen Asylums in Ireland, 1880-1930 : welfare, reform, incarceration? | Luddy, Maria | Article in Book | | 2008 |
| Magdalen asylums, 1765-1992 | | Article in Book | | 2002 |
| Magistrates' questions to Catholics, 1709 | | Article in Journal | | 1961 |
| Máistir scoile as Cuinche 1754-1818 | Ó Siocháin, Tomás | Article in Journal | | 2010 |
| Major accessions to repositories in 2001 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2002 |
| Major accessions to repositories in 2002 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2003 |
| Major accessions to repositories in 2003 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2004 |
| Major accessions to repositories in 2004 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2005 |
| Major accessions to repositories in 2005 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2006 |
| Major accessions to repositories in 2006 relating to Roman Catholicism; and bibliography | Anonymous | Article in Journal | | 2007 |
| Make them love you | Cullen, Kevin | Monograph or Collective Volume | Veritas | 2001 |
| Making history : Holinshed's Irish Chronicles, 1577 and 1587 | McCabe, Richard A. | Article in Book | | 2002 |
| Making Waterford Catholic : Paul Lombard before the Portuguese Inquisition, 1582-86 | O'Connor, Thomas | Article in Book | | 2026 |
| Malachy O'Quealy's ancestral clan, and place of origin | Gaynor, Patrick | Article in Journal | | 1943 |
| Mallow emigrant lives | Kavanagh, Myra D. | Article in Journal | | 2015 |
| Mallow schools, 1824 | Forde, Robert | Article in Journal | | 1989 |
| Mallow Work House Altar | Crowley, Seamus | Article in Journal | | 2015 |
| Managing motherhood : negotiating a maternity service for Catholic mothers in Dublin, 1930-1954 | Earner-Byrne, Lindsey | Article in Journal | | 2006 |
| Managing Motherhood : Negotiating a Maternity Service for Catholic Mothers in Dublin, 1930-1954 | Earner-Byrne, Lindsey | Article in Journal | | 2006 |
| Manning : Anglican and Catholic | | Monograph or Collective Volume | | 1951 |
| Manning the ramparts : Ireland and the agenda of the Roman Catholic church | Smyth, Jim | Article in Journal | | 1995 |
| Mannix in America : Archbishop Daniel Mannix's address at Madison Square Garden, New York, 18 July 1920 | Campbell, Malcolm | Article in Journal | | 2005 |
| Mannix, de Valera and Irish nationalism | Keogh, Dermot | Article in Book | | 1991 |
| Manorhamilton parish church 1783-1983 : glimpses of our history | Anonymous | Monograph or Collective Volume | [s.n.] | 1983 |
| Maori and Mission Sisters in New Zealand Since 1865 : Changing Approaches | Smith, Susan | Article in Journal | | 2007 |
| Map images and hard-headed pragmatism: the Roman Catholic Church and the two Irish states | Ó Corráin, Daithí | Article in Book | | 2023 |
| Mapping Death
Burial in Late Iron Age and Early Medieval Ireland | O'Brien, Elizabeth | Monograph or Collective Volume | Four Courts | 2020 |
| Mar daortaí Gaedhil | Ó Domhnalláin, Pádraic | Article in Journal | | 1946 |
| Margaret Cusack and Catholic-Nationalist history | Maume, Patrick | Article in Book | | 2011 |
| Margaret MacCurtain (1929-2020): an appreciation | O'Dowd, Mary | Article in Journal | | 2022 |
| Marginal but not alienated : confessions of a loudmouthed Irish priest | Greeley, Andrew M. | Article in Journal | | 1974 |
| Marian Counter-Reformation | Edwards, John | Article in Book | | 2023 |
| Marist brothers, 1817-2010 | Canning, B. J. (Bernard J.) | Article in Journal | | 2010 |
| Marriage and the pamphlet covers of the Catholic Truth Society | Mac Cárthaigh, Lir | Article in Book | | 2019 |
| Marriage, the Family, and Sexual Ethics | Geiringer, David : Kelly, Laura | Article in Book | Oxford University Press | 2023 |
| Marsh's library and the Irish Catholic tradition | O'Connor, Thomas | Article in Book | | 2004 |
| Martyrdom | Tait, Clodagh | Article in Book | | 2023 |
| Mary : a history of devotion in Ireland | O'Dwyer, Peter | Monograph or Collective Volume | | 1988 |
| Mary Aikenhead (1787-1858), servant of the poor : founder of the Religious Sisters of Charity | Blake, Donal | Monograph or Collective Volume | Caritas | 2001 |
| Maryborough new chaple 1792 | Hyland, Jackie | Article in Journal | | 2003 |
| Marymount 1974-1994 | | Monograph or Collective Volume | Marymount College | 1994 |
| Mass attendance in Ireland in 1834 | Miller, David William, 1940- | Article in Book | | 2000 |
| Mass in a Connemara Cabin : Religion and the politics of painting | O'Sullivan, Niamh | Article in Journal | | 2005 |
| Mass rocks and altar sites in Duhallow | McCarthy, Donogh | Article in Journal | | 1991 |
| Mass Rocks and related sites | Downey, LiamO'Sullivan, Muiris | Article in Journal | | 2014 |
| Mass sites of 'Uíbh Laoghaire' | Bishop, Hilary Joyce | Article in Journal | | 2016 |
| Mass stations in Raphoe | McLaughlin, P. J. | Article in Journal | | 1957 |
| Massacre at Sixmilebridge 1852 | Haugh, Dominic | Article in Journal | | 2011 |
| Massacres d'Irlande : 1649, 1798 | Crouzet, François | Article in Book | | 1994 |
| Masshouses and meetinghouses : the archaeology of the penal laws in early modern Ireland | Donnelly, Colm J. | Article in Journal | | 2004 |
| Mater Admirabilis Day Secondary School | Logue, Rose Mary | Article in Journal | | 2017 |
| Material Culture | Walsham, Alexandra | Article in Book | | 2023 |
| Material Culture | Johanesen, Sarah : Marsland, Claire | Article in Book | Oxford University Press | 2023 |
| Material in the Irish language in The Robinson Library, Armagh | Dillon, Charles | Article in Journal | | 2017 |
| Material relating to Ireland in the Albani collection of MSS in the Vatican archives | Giblin, Cathaldus | Article in Journal | | 1964 |
| Materials for a bibliography of the Very Rev. Peter Canon O'Leary, 1893-1900 | Lankford, SeamusÓ Cuiv, S. | Article in Journal | | 1954 |
| Mathew Carey Catholic identity and the Penal Laws | Higgins, Padhraig | Article in Journal | | 2014 |
| Mathew Carey's Irish apprenticeship: editing the "Volunteers Journal", 1783-84 | Kelly, James, 1959- | Article in Journal | | 2014 |
| Matt Talbot | Glynn, Joseph | Monograph or Collective Volume | Veritas | 1977 |
| Matt Talbot and his times | Purcell, Mary | Monograph or Collective Volume | Goodliffe Neale | 1976 |
| Matt Talbot and his times : a new authentic life of the servant of God | Purcell, Mary | Monograph or Collective Volume | Gill | 1954 |
| Matthew Duane: a prudent Irish Catholic Chamber Counsel in England | Kenny, Colum | Article in Journal | | 2018 |
| Matthew Gibney (1837-1925), bishop of Perth, Western Australia | Mitchell, Kilian J. | Article in Journal | | 2001 |
| Matthew Teige (d. 1652), the Irish Pastoral College of Louvain and the 'Lectio Catechistica' (1644) | Dunne, Michael | Article in Journal | | 2014 |
| Maurice Charles Phelan, O. F. M. Cap., an apostle in New York | Stanislaus, Fr. | Article in Journal | | 1959 |
| Maurice MacBrien, bishop of Emly, and the confiscation of his baggage, March 1578 | Millett, Benignus | Article in Journal | | 1993 |
| Maynooth : a Catholic seminary in a Protestant state | Keogh, Dáire | Article in Journal | | 1995 |
| Maynooth : students and ordinations 1895-1984 | Hamell, P. J. | Monograph or Collective Volume | | 1984 |
| Maynooth a hundred years ago | Anonymous | Article in Journal | | 1940 |
| Maynooth and Georgian Ireland | Newman, Jeremiah | Monograph or Collective Volume | Kenny | 1979 |
| Maynooth and the missions | Meehan, Denis | Article in Journal | | 1945 |
| Maynooth and Victorian Ireland | Newman, Jeremiah | Monograph or Collective Volume | Kenny's Bookshops & Art Galleries | 1983 |
| Maynooth college archives | Corish, Patrick J. | Article in Journal | | 1993 |
| Maynooth college buildings : some historical difficulties | Meehan, Denis | Article in Journal | | 1947 |
| Maynooth College, 1795-1995 | Corish, Patrick J. | Monograph or Collective Volume | Gill & Macmillan | 1995 |
| Maynooth Deans in the nineteenth century | Bradley, John, Rev. | Article in Journal | | 2015 |
| Maynooth Mission to Africa : The Story of St Patrick's, Kiltegan | Kiggins, Thomas | Monograph or Collective Volume | NA | 1991 |
| Maynooth Monsignor : [an interview with Monsignor Patrick J. Corish] | Keogh, Dáire | Article in Journal | | 1996 |
| Maynooth students and ordinations 1795-1895 : index | Hamill, Patrick J. | Article in Journal | | 1967 |
| Maynooth students and ordinations, 1795-1893 : index | | Article in Journal | | 1968 |
| Maynooth students, 1795-1895 : index | Hamell, Patrick J. | Article in Journal | | 1968 |
| Maynooth, 1895-1945 | O'Doherty, J. F. | Article in Journal | | 1945 |
| Maynooth, the 'Godless colleges' and liberal imperial thought in the 1840s | Biel, Justin | Article in Journal | | 2018 |
| McCarthyism, Catholicism and Ireland | Madden, Gerard | Article in Journal | | 2017 |
| Meascra de Thaighdithe | Ó Murthuile, Seosamh | Article in Journal | | 1946 |
| Measgra i gcuimhne Mhichíl Uí Chléirigh. Miscellany of historical and linguistic studies in honour of Brother Michael Ó Cléirigh, chief of the Four Masters, 1643-1943 | | Monograph or Collective Volume | Assisi Press | 1944 |
| Meath-born priest victim of Australian wartime censorship: the story of Fr James Timmons | Cusack, Danny | Article in Journal | | 2021 |
| Meathman Down Under: Patrick McGarry of Kildalkey | Cusack, Danny | Article in Journal | | 2019 |
| Medieval Irish cathedral chapters | Nicholls, K. W. (Kenneth W.) | Article in Journal | | 1973 |
| Medieval Kilmeaden parish clergy: rectors or vicars? | O'Brien, Niall C.E.J. | Article in Journal | | 2019 |
| Medieval manuscripts found at Bonamargy friary and other hidden manuscripts | Sharpe, Richard | Article in Journal | | 2015 |
| Meditations by Katherine Manners, Duchess of Buckingham, 1646 | Manners, Katherine, duchess of Buckingham and marchioness of Antrim, 1603?-1649 | Article in Journal | | 2009 |
| Memoir of the Most Rev. Oliver Plunket, archbishop of Armagh, and Primate of all Ireland, who suffered death for the Catholic faith in the year 1681 | | Monograph or Collective Volume | | 1861 |
| Memoir of the Most Rev. Oliver Plunkett, archbishop of Armagh | Plunkett, Oliver, bishop and saint, 1625-1681
| Monograph or Collective Volume | [s.n.] | 1895 |
| Memoir of the Rev. James McLeer, P.P., Burt and Inch 1847-1864 | Campbell, WilliamMcGinn, Brendan | Article in Journal | | 1978 |
| Memoir of the Very Rev. Matthew Kelly, professor Maynooth College and canon of Ossory | Murphy, N., P.P. | Article in Journal | | 1883 |
| Memoirs of chaplain life : three years with the Irish Brigade in the army of the Potomac | Corby, WilliamKohl, Lawrence Frederick | Monograph or Collective Volume | Fordham University Press | 1992 |
| Memoirs of Richard Whately, Archbishop of Dublin | | Monograph or Collective Volume | Richard Bentley | 1864 |
| Memoirs of the marquess of Rockingham and his contemporaries. 2 vols. | | Monograph or Collective Volume | | 1852 |
| Memoirs through the years, 6 : a Catholic experience in the fifties | Jennings, Mary Lou | Article in Book | | 2004 |
| Memorial inscriptions at St. Columba's Church, Draperstown and St. Anne's Church, Sixtowns | Fawcett, Frederick W.Mawhinney, GrahamMawhinney, JenniferMorrow, David | Monograph or Collective Volume | Ballinascreen Historical Society | 2004 |
| Memorial plaques and windows in Blarney and District churches : 5. St Patrick's Catholic Church, Whitechurch | Gabriel, Brian | Article in Journal | | 2015 |
| Memorial to Fr Mayler | Murphy, Hilary | Article in Journal | | 2011 |
| Memorials addressed to the Secretary of State for the House Department by Roman Catholic prelates in Ireland on the subject of university and national education in Ireland ... | Anonymous | Monograph or Collective Volume | | 1866 |
| Memories of Mr Holden | Devlin, Madeline | Article in Journal | | 2010 |
| Memories of St Brendan's seminary, Killarney | Ó Lúing, Pádraig | Monograph or Collective Volume | Pádraig Ó Lúing | 1994 |
| Memories of Tomdarragh | McQuillan, Lucy (née Byrne) | Article in Journal | | 2003 |
| Mentalities in Restoration Britain and Ireland, 1660-1678: Anglo-Irish relations from the Restoration to the Popish Plot | Forbes, Arthur Alfred | Thesis | | 1995 |
| Mercy unto thousands | Degnan, M. Bertrand | Monograph or Collective Volume | Browne and Nolan | 1958 |
| Merriman in a world of schoolmasters | Cullen, L. M. (Louis Michael) | Article in Journal | | 2011 |
| Methodism and anti-Catholic politics, 1800-1846 | Hempton, David | Thesis | | |
| Methodism in Irish society, 1770-1830 | Hempton, David | Article in Journal | | 1986 |
| Metropolitan ambitions and politics : Kells-Mellifont and Man & the Isles | Beuermann, Ian | Article in Journal | | 2002 |
| Metropolitan anxieties : on the meaning of the Irish Catholic adventure in Scotland | Boyle, Mark | Monograph or Collective Volume | Ashgate | 2011 |
| Mgr O'Riordan, Bishop O'Dwyer and the shaping of new relations between nationalist Ireland and the Vatican during World War One | De Wiel, Jérôme aan | Article in Journal | | 1999 |
| Michael Anthony Fleming and ultramontanism in Irish-Newfoundland roman catholicism, 1829-1850 | Fitzgerald, John Edward | Article in Journal | | 1998 |
| Michael Cardinal Logue 1840-1924, part 1 | Walsh, Aisling | Article in Journal | | 1997 |
| Michael Cardinal Logue 1840-1924, part 2 | Walsh, Aisling | Article in Journal | | 1999 |
| Michael Cardinal Logue 1840-1924, Part IV - 'A Catholic ethos for a Catholic society' | Walsh, Aisling | Article in Journal | | 2005 |
| Michael Cardinal Logue, 1840-1924, striving for a Catholic education system, Part 3 | Walsh, Aisling | Article in Journal | | 2003 |
| Michael Charles Purtill (1846-1914); an Irish step dancer in Sydney | Mollenhauer, Jeanette | Article in Journal | | 2018 |
| Michael John Brenan | O'Reilly, Thomas | Article in Journal | | 1941 |
| Michael Kieran, 1803-1869, parish priest of Dundalk, 1848-1869, Archbishop of Armagh, 1866-1869 | Bellew, Tom | Article in Journal | | 1994 |
| Michael Logue and the Catholic Church in Ireland, 1879-1925 | Privilege, John | Monograph or Collective Volume | Manchester University Press | 2009 |
| Michael Logue, the Catholic Church and public affairs in Ireland, 1879-1924 | Privilege, John | Thesis | | 2005 |
| Michael MacDonogh, O.P., bishop of Kilmore, 1728-46 | Fenning, Hugh | Article in Journal | | 1966 |
| Michael McCarthy and James Joyce's Dublin | Ledden, Patrick J. | Article in Journal | | 2000 |
| Michael McCarthy's campaigns against clerical authority | Maume, Patrick | Article in Book | | 2020 |
| Michael Peter MacMahon : bishop of Killaloe, June 5, 1765 - Februray 20, 1807 | Clancy, J. J. | Article in Journal | | 1940 |
| Michael Wadding, mystic and missionary, 1586-1644 | Burris, E. J. | Article in Journal | | 1954 |
| Michael, Cardinal Logue, 1840-1924 | Walsh, Aisling | Thesis | | 1996 |
| Micro-credit, misappropriation and morality : British responses to Irish distress, 1822-1831 | Bailey, Craig | Article in Journal | | 2006 |
| Mid-twentieth-century architectonics of Catholic Dublin | Rowley, Ellen | Article in Book | | 2020 |
| Migration, Migrant Chaplaincy, and Multi-ethnic Britain | Mangion, Carmen M. | Article in Book | Oxford University Press | 2023 |
| Migration, mission and identity : Presbyterian fundraising and the evangelization of the Irish Roman Catholic diaspora, c. 1840-70 | Holmes, Andrew R. | Article in Book | | 2016 |
| Militants of the 1860's : the Philadelphia Fenians | Clark, Dennis | Article in Journal | | 1971 |
| Mimesis, memory, and the magic lantern : what did the Knock witnesses see? | Carpenter, Paul | Article in Journal | | 2011 |
| Ministers, bishops and the changing balance of power in Irish education 1950-70 | Walsh, John | Article in Journal | | 2012 |
| Ministry in Rosscarbery | Walsh, Fr. Pat | Article in Journal | | 2004 |
| Minority verdict : experiences of a Catholic public servant | Hayes, Maurice | Monograph or Collective Volume | Blackstaff Press | 1995 |
| Minority versus minority : constitutional nationalism and republicanism in Northern Ireland 1981-1988 | Ó Beacháin, Donnacha | Article in Journal | | 1991 |
| Miscellanea 3 : Stations in the parish of Durrow, Ossory, in 1826 and 1840 | O'Doherty, Sean | Article in Journal | | 2008 |
| Miscellanea 3. General Sherman and Father Shearman | Ó Macháin, Pádraig | Article in Journal | | 2006 |
| Miscellanea : Shanagolden celebrates O'Connell's victory | Coleman, Patrick | Article in Journal | | 2001 |
| Miscellanea. 1. Rinuccini letters in the Archivio di Stato, Roma: a preliminary report | Ó Fearghail, Fearghus | Article in Journal | | 2010 |
| Miscellaneous documents : 2, 1625-40 | | Article in Journal | | 1949 |
| Miscellaneous documents, 1602-1715 | Jennings, Brendan | Article in Journal | | 1950 |
| Miscellaneous papers | | Article in Journal | | 1951 |
| Miscellany. The beginnings of Irish Catholic journalism in America | Folk, Paul J. | Article in Journal | | 1920 |
| Misean Mhaigh Nuad chun na Síne, 1916-1963 | Ó Murchú, Pádraig | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2003 |
| Mission or Church, 1570-1640? | McCoog, Thomas M. | Article in Book | | 2023 |
| Missionaries from All Hallows (Dublin) to the United States, 1842-65 | Purcell, Richard J. | Article in Journal | | 1942 |
| Missionaries of the Sacred Heart | Mac Carthaigh, Donncha | Monograph or Collective Volume | MSC | 2004 |
| Missionary and military chaplain : Father John Mullan and the Siege of Kut-al-Amara | Hagerty, James | Article in Book | | 2015 |
| Missionary priests of All Hallows College, Dublin, from the diocese of Armagh 1842-75 | Murray, Patrick | Article in Journal | | 1955 |
| Missionary record of the Oblates of Mary Immaculate, St. Mary Magdalene, Blaenau Ffestiniog | O'Donovan, Richard | Monograph or Collective Volume | Missionary Oblates of Mary Immaculate | 2003 |
| Missionary sisters of St Columban | Fairbairn, Margaret | Article in Journal | | 1947 |
| Missions to Gaels : reformation and counter-reformation in Ulster and the Highlands and islands of Scotland | Macdonald, Fiona A. | Monograph or Collective Volume | John Donald | 2005 |
| Mister, are you a priest? : jottings by Bishop Edward Daly | Daly, Edward | Monograph or Collective Volume | Four Courts | 2000 |
| Mixed marriage, "a grave injury to our church" : An account of the 1957 Fethard-on-Sea Boycott | O'Connor, Catherine | Article in Journal | | 2008 |
| Mixed marriages and Irish politics : the effect of 'Ne temere' | De Bhaldraithe, Eoin | Article in Journal | | 1988 |
| Mixed marriages in pre-independence Ireland | Rafferty, Oliver P. | Article in Book | | 2019 |
| Modernism, tradition and debates on religious art in Ireland, 1920-1950 | Turpin, John | Article in Journal | | 2002 |
| Modernity and Anti-Modernism | Pierce, Andrew | Article in Book | Oxford University Press | 2003 |
| Modernizing mobility studies | Fox, Richard Wightman | Article in Journal | | 1977 |
| Monaghan cathedral | Duffy, Joseph | Monograph or Collective Volume | Eason | 1992 |
| Monaghan, county of intrigue | Ó Cuinneagáin, Mícheál | Monograph or Collective Volume | The author | 1980 |
| Money and Irish Catholicism : an intimate history, 1850-1921 | Roddy, Sarah | Monograph or Collective Volume | Cambridge University Press | 2025 |
| Monica Lea-Wilson : warrior widow of the Church Militant | Hanna, Michael V. | Article in Journal | | 2024 |
| Monsignor Denis Faule | Murray, Raymond | Monograph or Collective Volume | Cumann Seanchais Árd Mhaca | 2006 |
| Monsignor James Horan : memoirs, 1911-1986 | Horan, James | Monograph or Collective Volume | Brandon | 1992 |
| Monsignor James O'Laverty : parish priest of Holywood and historian of the diocese of Down and Connor | Macaulay, Ambrose | Article in Journal | | 1980 |
| Monsignor John Hagan 'Watchman of the Gael' | Ó Duinn, Séamus | Article in Journal | | 1992 |
| Monsignor O'Riordan, Bishop O'Dwyer and the shaping of new relations between nationalist Ireland and the Vatican during World War I | De Wiel, Jérôme aan | Article in Journal | | 1999 |
| Monsignor Pádraig de Brún (1889-1960) : cathaoirleach Chomhairle na hInstitúide (1940-1960) | Ó Flaithimhín, Séamus | Article in Journal | | 1994 |
| Monsignor Patrick J. Hamell, a profile | Doran, Liam | Article in Journal | | 1996 |
| Monsignor Patrick Joseph Boylan, V.G. | Weafer, John | Article in Journal | | 2013 |
| Monsignor Patrick O'Reilly, 1843-1914 | Kavanagh, Myra | Article in Journal | | 2014 |
| Monsignor Thomas Aquinas Quirke | Crowley, SeamusO'Connor, Jim | Article in Journal | | 1998 |
| Montalembert Letter on Catholicism in Ireland | | Article in Journal | | 2011 |
| Montgomery and the Black Man : religion and politics in nineteenth-century Ulster | Boyd, Andrew, 1921- | Monograph or Collective Volume | Columba | 2006 |
| Monumental inscriptions from Stradbally R. C. church and Faha chapel-of-ease, Co. Waterford, up to 1880 | Mulholland, J. | Article in Journal | | 1981 |
| Moral monopoly : the Catholic church in modern Irish society | Inglis, Tom | Monograph or Collective Volume | Gill & Macmillan | 1987 |
| Moral monopoly : the rise and fall of the Catholic church in modern Ireland | Inglis, Tom | Monograph or Collective Volume | University College Dublin Press | 1998 |
| Moral order and the liberal agenda in the Republic of Ireland | Hug, Chrystel | Article in Journal | | 2001 |
| Moral prescription : the Irish medical profession, the Roman Catholic church and the prohibition of birth control in twentieth-century Ireland | Earner-Byrne, Lindsey | Article in Book | | 2010 |
| More Kilmore clergy lists | Traynor, Owen | Article in Journal | | 1971 |
| More than one working class : Protestant and Catholic riots in Edwardian Liverpool | Bohstedt, John | Article in Book | | 1992 |
| Morrisown Lattin, County Kildare, 1630–1800 the estate and its tenants | Lyons, Emma | Monograph or Collective Volume | Four Courts Press | 2020 |
| Most Rev Dr Andrew Boylan, C.S.S.P., bishop of Kilmore (1907-1910) | Mulvey, Anthony | Article in Journal | | 1991 |
| Most Rev. James Ryan, D. D., coadjutor bishop of Killaloe, 1872 to 1889 | Fogarty, Michael | Article in Journal | | 1942 |
| Most Rev. Patrick Murray, CSSR, 1865-1959 | Canning, B. J. (Bernard J.) | Article in Journal | | 1999 |
| Most Rev. Thomas McDonnell bishop of Killala, Dec. '70 - Jan. '87 : a personal tribute by Rt. Rev. P. Gallagher P.P., V.G. Crossmolina | Gallagher, Patrick | Article in Journal | | 1988 |
| Most Rev. William Gross : missionary bishop of the South | Skeabeck, Andrew, Rev. | Article in Journal | | 1954 |
| Mother and child : maternity and child welfare in Dublin, 1922 - 60 | Earner-Byrne, Lindsey | Monograph or Collective Volume | Manchester University | 2007 |
| Mother Berchmans Hughes, F.C.J. | Moorhead, Patricia | Article in Journal | | 1996 |
| Mother Jones : Ireland to North America to Ireland | Gorn, Elliott J. | Article in Journal | | 2014 |
| Mother Mary Aikenhead | Doolan, Aegidius | Article in Journal | | 1958 |
| Mother Mary Aikenhead | MacDonagh, Hilary | Article in Journal | | 1958 |
| Mother Mary Benedict Hickey of Perthwille and Tooreenbawn | Ua Cadhla, Diarmuid | Article in Journal | | 1997 |
| Mother Patrick Cosgrave, OP (1863-1900) - A Wexford Missionary in Rhodesia | Cosgrave, BillCosgrave, Nick | Article in Journal | | 2005 |
| Mother Vincent Whitty : woman and educator in a masculine society | O'Donoghue, Mary | Monograph or Collective Volume | Melbourne University Press | 1972 |
| Mount Lourdes : a history | Tannian, Bridie | Monograph or Collective Volume | Menapia | 1999 |
| Moving beyond sectarianism : religion, conflict and reconciliation in Northern Ireland | Clegg, CeceliaLiechty, Joseph | Monograph or Collective Volume | Columba | 2001 |
| Moving beyond sectarianism : religion, conflict, and reconciliation in contemporary Northern Ireland | Clegg, CeceliaLiechty, Joseph | Article in Book | | 2003 |
| Moving the immovable : the civil rights movement in Northern Ireland | Smyth, Jim | Article in Book | | 2006 |
| Mrs John O'Brien, her life, her work, her friends | Bayley Butler, BeatriceButler, Katherine | Article in Journal | | 1980 |
| MS material for diocesan and parochial history : report on the collections of sources : 2 | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| Mugwump cartoonists, the papacy, and Tammany Hall in America'a gilded age | Thomas, Samuel J. | Article in Journal | | 2004 |
| Múineadh na Gaeilge agus na Bráithre Críostaí | Ó Meachair, Tadhg | Article in Book | | 1996 |
| Muircheartach Ó Domhnalláin, easbog Chluain Fearta, 1695-1706 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1953 |
| Muircheartach Ó Domhnalláin, easbog Chluain Fearta, 1695-1706 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1952 |
| Muirthéacht na séú aoise déag | Ó Laidhin, Tomás | Article in Journal | | 1952 |
| Multyfarnham Friary through the years | Kealy, John | Article in Journal | | 2017 |
| Municipal reform and the repeal movement in Cork, 1833-1844 | Cronin, Maura (née Murphy) | Article in Journal | | 1976 |
| Murder at Aughnacloy 1818 | Dillon, Charles | Article in Journal | | 1990 |
| Murder at the Black Castle, Wicklow - 1645 (the life and times of Edmund O'Reilly, primate archbishop of Ireland) | O'Reilly, Edward | Article in Journal | | 1997 |
| Murder most foul? | Finlay, John | Article in Journal | | 1999 |
| Murtagh Dunne : Brother Christopher Luke F.S.C. (1890-1959) | Kavanagh, P. J. | Article in Journal | | 1999 |
| Muscular Catholicism : nationalism, masculinity and Gaelic team sports, 1884-1916 | McDevitt, Patrick F. | Article in Journal | | 1997 |
| Muscular Catholicism : nationalism, masculinity, and Gaelic team sports, 1884-1916 | McDevitt, Patrick F. | Article in Book | | 2005 |
| Music and religion in Ireland | O'Donoghue, Patrick | Article in Book | | 1995 |
| Music and the institutions | Ryan, Joseph J. | Article in Book | | 1998 |
| My feelings about Britain, British governments, Roman Catholicism and Irish nationalists | McGimpsey, Christopher D. | Article in Book | | 1986 |
| My mother taught me how to pray : the nine Murphys of Newmarket-on-Fergus | Clear, Caitríona | Article in Journal | | 1995 |
| My own story | O'Sullivan, SheilaÓ Laoghaire, Pádraig | Monograph or Collective Volume | Gill & Macmillan | 1973 |
| Myles Gerald Keon | Butler, James | Article in Journal | | 1951 |
| Myles Walter Keogh (1840-1876) | Kehoe, Imelda | Article in Journal | | 1992 |
| Myths and marches : history, class and the siege of Derry 1689 | McGovern, Mark | Article in Journal | | 1997 |
| Myths, revisionism and the writing of Irish history | Larkin, Emmet | Article in Journal | | 1998 |
| Na coláistí Éireannacha i bPáras, 1578-1978 | Ó Doibhlin, Breandán | Article in Book | | 1988 |
| Na Colmbánaigh, 1963-2005 | Ó Murchú, Pádraig | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2005 |
| Na cosantóiri i gcomhtheacs na hÉireann - 1785-98 | Ní Bhroiméil, Úna | Article in Journal | | 1987 |
| Na Manaigh Liatha sa 17ú céad : trí cáipéisí | Mac Niocaill, Gearóid | Article in Journal | | 1956 |
| Nano Nagle (1718-1784): Educator | Clear, Caitriona | Article in Journal | | 2009 |
| Nano Nagle - an unconventional woman | Castle, JessieO'Brien, Gillian | Article in Journal | | 2018 |
| Nano Nagle: her life and times | Nowlan-Roebuck, Catherine | Article in Journal | | 2018 |
| Nation / Nazione : Irish nationalism and the Italian Risorgimento | | Monograph or Collective Volume | University College Dublin Press | 2014 |
| Nation und Konfession : Varianten des politischen Katholizismus im Europa des 19 Jahrhunderts | Birke, Adolf M., 1939- | Article in Journal | | 1996 |
| National University of Ireland, Maynooth | Smyth, Séamus | Article in Book | | 2008 |
| Nationalism and illuminated addresses : an Irish Catholic community in Victorian Lancashire | Dunleavy, John | Article in Journal | | 2009 |
| Nationalism and the Catholic Church in the 1840s | Hill, Jacqueline R. | Article in Journal | | 1975 |
| Nationalism as blasphemy : negotiating belief and institutionality in the genre of Fenian recollections | Martin, Amy E. | Article in Book | | 2005 |
| Nationalism from the pulpit: Revd Michael O'Hickey, Irish education and the Gaelic ideal | McManus, Cathal | Article in Book | | 2012 |
| Nationalism in the textbooks of the Christian Brothers | Walsh, Lorcan | Article in Journal | | 1986 |
| Nationalism, race, religion and the Irish Question in inter-war Scotland | Finlay, Richard J. | Article in Journal | | 1991 |
| Nationalism, religion and the education question | Moran, Dermot | Article in Journal | | 1983 |
| Nationalist Belfast and the Great War...Belfast's forgotton soldiers | Mercer, Eric | Article in Journal | | 2000 |
| Nativism, liquor, and riots : Manchester politics, 1858-1859 | Haebler, Peter | Article in Journal | | 1991 |
| Nativist riots in Manchester : an episode of know-nothingism in New Hampshire | Haebler, Peter | Article in Journal | | 1984 |
| Natural history and historical nature : the project for a natural history of Ireland | Coughlan, Patricia | Article in Book | | 1994 |
| Navan, Co. Meath, in 1766 | Gurrin, Brian | Article in Journal | | 2004 |
| Nazionalismo e integralismo religioso come attrazioni esotiche : Edith e Victor Turner al purgatorio di S. Parizio | Taviani, Paolo | Article in Journal | | 1995 |
| Near famine : the Roman Catholic Church and the subsistence crisis of 1879-82 | Moran, Gerard | Article in Journal | | 2003 |
| Negotiating the middle ground: Thomas Moore on religion and Irish nationalism | Roney, John B. | Article in Book | | 2017 |
| Neither feminist nor flapper : the ecclesiastical construction of the ideal Irish woman | Valiulis, Maryann Gialanella, 1947- | Article in Book | | 1995 |
| Neither pagan nor Protestant? : Irish Catholicism since the Reformation | Drumm, Michael | Article in Book | | 1999 |
| Nenagh. The story of Nenagh convent, Sisters of Mercy | Anonymous | Article in Journal | | 1953 |
| Networking respectability : class, gender and ethnicity among the Irish in South Wales, 1845–1914 | O'Leary, Paul | Article in Journal | | 2005 |
| New church of St Malachy's | Ó Muirí, Réamonn | Article in Book | | 2013 |
| New horizons: the Sisters of St. Louis in a changing world | O'Donoghue, Jo | Monograph or Collective Volume | Londubh | 2012 |
| New Ireland, New Church | Martin, Diarmuid, Archbishop of Dublin 1945- | Article in Journal | | 2011 |
| New light on the background to the Irish participation in the papal army of 1860 | Cryan Pancani, M. J. | Article in Journal | | 1986 |
| New perspectives on the 'devotional revolution': evidence from the archives of the Irish College, Paris | Begadon, Cormac | Article in Journal | | 2018 |
| New Zealand | Duggan, Eileen | Monograph or Collective Volume | Gill | 1971 |
| New Zealand Catholicism and the Irish issue, 1914-1922 | Sweetman, Rory M. | Article in Book | | 1989 |
| Newcastle Catenians and the Great War | Hagerty, James M.Kenmair, Kevin | Article in Journal | | 2007 |
| Newman | McHugh, Roger Joseph | Article in Journal | | 1944 |
| Newman : light in winter | Trevor, Meriol | Monograph or Collective Volume | [s.n.] | 1962 |
| Newman : the man and his legacy | Kennedy, Finola | Article in Journal | | 1990 |
| Newman and Father Dominic Barberi | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1945 |
| Newman and literary studies in the university | Kleineberger, Hans R. | Article in Journal | | 1990 |
| Newman and Maynooth | Corish, Patrick J. | Article in Book | | 1978 |
| Newman and the Irish Bishops | O'Connell, Marvin R. | Article in Journal | | 2004 |
| Newman at Beaumont | Brown, Stephen J. | Article in Journal | | 1945 |
| Newman commemoration, 1852-1952 : catalogue of an exhibition of books, documents and manuscripts relating to Cardinal Newman | Anonymous | Monograph or Collective Volume | Browne and Nolan | 1952 |
| Newman in Dublin : fresh light from the archives of propaganda | Whyte, J. H. | Article in Journal | | 1960 |
| Newman in Ireland | Field, W. N. | Article in Journal | | 1945 |
| Newman's 'idea' and the Irish reality | O'Donoghue, Noel Dermot | Article in Journal | | 1991 |
| Newman's difficult Dublin years | Kelley, Nora M. | Article in Journal | | 1977 |
| Newman's idea of a university, "the Circle of the Sciences", and the constitution of the church | Peterburs, Wulstan | Article in Book | | 2005 |
| Newman's ideas of an open university, and its consequences today | Coulson, John | Article in Journal | | 1976 |
| Newman's Irish adventure | Williams, William J. | Article in Journal | | 1951 |
| Newman's Irish university | Barr, Colin | Article in Book | | 2020 |
| Newman's Irish years | McHugh, Roger Joseph | Article in Journal | | 1945 |
| Newman's work for university education in Ireland | McGrath, Fergal | Thesis | | |
| Newman, Faber and the oratorian separation : a reappraisal | Quinn, John F. | Article in Journal | | 1990 |
| Newman, Ireland, and Universality | Docherty, Thomas | Article in Journal | | 2004 |
| Newman, [1] : the pillar of the cloud; [2] : light in winter | Trevor, Meriol | Monograph or Collective Volume | | 1962 |
| Newpark House and the Mahon family | Barron, Declan | Article in Journal | | 2019 |
| Newport Co. Tipperary between the religious censuses 1766-1835 | Sweeney, Hugh | Article in Journal | | 2012 |
| Newry - its growth - its Catholicity | Campbell, E. | Article in Journal | | 1946 |
| News from a new Republic : Ireland in the 1950s | Garvin, Tom | Monograph or Collective Volume | Gill & Macmillan | 2010 |
| News not worth relating: the hanging of Walter Evers, 10 June 1642 | Byrne, Joseph
| Article in Journal | | 2022 |
| Nicholas Callan - a scrupulous life of faith and science | Hopkins, BrianMcClintock, Peter | Article in Journal | | 2022 |
| Nicholas Callan - his work and times | Murphy, Patrick | Article in Journal | | 1964 |
| Nicholas Callan : priest scientist | McLaughlin, P. J. | Monograph or Collective Volume | Clonmore & Reynolds | 1965 |
| Nicholas Callan, 1799-1864 | McKeith, Niall E. | Article in Book | | 2003 |
| Nicholas Conaty, bishop of Kilmore, (1865-1886) | Kelly, Gabriel | Article in Journal | | 1987 |
| Nicholas French, bishop of Ferns, and the peace with Ormonde, 1649 | Corish, Patrick J. | Article in Journal | | 1947 |
| Nicholas Tuite in the West Indies (1705-1772) | Tuite, Peter | Article in Journal | | 2018 |
| Nicholas Wiseman, ecclesiastical politics and Anglo-Irish relations in the mid nineteenth century | Rafferty, Oliver P. | Article in Journal | | 1993 |
| Nicholas Wiseman, ecclesiastical politics and Anglo-Irish relations in the mid-nineteenth century | Rafferty, Oliver P. | Article in Journal | | 1993 |
| Nineteen fifty-four: the Marian Year in Drogheda | Mullen, Maura | Article in Journal | | 2013 |
| Nineteenth-century European co-operation : Ireland, France and Germany - the role played by French liberal Catholics as a channel for the dissemination of O'Connell's ideas in Catholic Germany | Grogan, Geraldine F. | Article in Book | | 2004 |
| Nineteenth-century Irish Catholicism : farmer's ideology and national religion : explorations in cultural explanation | Hynes, Eugene | Article in Book | | 1989 |
| Ninety candidates proposed for Irish dioceses, c. 1665 | Millett, Benignus | Article in Journal | | 1955 |
| No cheap grace : reforming the Irish Church | Murphy, Séamus, SJ | Article in Book | | 2012 |
| No crusader | Walsh, Willie | Monograph or Collective Volume | Columba Press | 2016 |
| No Irish need apply | Gitelman, H. M. | Article in Journal | | 1973 |
| No lions in the hierarchy : an anthology of sorts | Dunn, Joseph | Monograph or Collective Volume | Columba | 1994 |
| No sex, please, we're Catholic: the influence of the Catholic church on the declining marriage rates in Ireland between the Famine and the First World War | Foley, Aideen | Thesis | | 2000 |
| No temporising with the foe. Literary materials relating to the siege of Derry | Burnside, Sam | Article in Journal | | 1988 |
| No tigers in Africa : recollections and reflections of 25 years of 'Radharc' | Dunn, Joseph | Monograph or Collective Volume | Columbia University Press | 1986 |
| No words can tell our sorrow. A tribute to the late Cardinal Ó Fiaich | Kearns, Patrick | Article in Journal | | 1990 |
| Non-juring priests in 1714 | Walsh, Paul, Revd, 1885-1941 | Article in Journal | | 1937 |
| North William Street, Dublin : founding parish mission, education and pastoral work | Neylon, Anne | Article in Book | | 2014 |
| North-Eastern Boundary Bureau, 1922-1923 : handbook of the Ulster question | Anonymous | Monograph or Collective Volume | The Stationery Office | 1923 |
| Northern Catholics and the early years of the Troubles | Rafferty, Oliver P. | Article in Book | | 2013 |
| Northern Ireland : faith and faction | Irvine, Maurice | Monograph or Collective Volume | Routledge | 1991 |
| Northern Ireland : from birth pangs to disintegration, 1920-72 | Phoenix, Eamon | Article in Book | | 1989 |
| Northern Ireland and the Catholic Church in Britain | Dowden, R. | Monograph or Collective Volume | Commission for International Justice | 1976 |
| Northern Ireland, 1920-25 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern Ireland, 1925-39 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern Ireland, 1939-45 | Barton, Brian, 1944- | Article in Book | | 2003 |
| Northern nationalism : nationalistic politics, partition and the Catholic minority in Northern Ireland 1890-1940 | Phoenix, Eamon | Monograph or Collective Volume | Ulster Historical Foundation | 1994 |
| Nos Autem : Castleknock College and its contribution | | Monograph or Collective Volume | Gill & Macmillan | 1996 |
| Not in front of the Aatar
mixed marriages and sectarian tensions between Catholics and Protestants in pre-multicultural Australia | McHugh, Siobhan | Article in Journal | | 2009 |
| Nóta fán triúr príomháid de mhuintir Mhic Mhathghamhna | Ó Maolagáin, Pádraig | Article in Journal | | 1947 |
| Nótaí beathaisnéise ar an Dr Séamas Ó Gallchobhair | Mac Murchaidh, Ciarán | Article in Journal | | 1998 |
| Note: All Saints, Drimoleague: clarifications and new discoveries | Butler, Richard J. | Article in Journal | | 2016 |
| Notebook 36 of Fr Laurence Browne, O.F.M. | Ó Huallacháin, Maelísa | Article in Journal | | 2003 |
| Notes and Documents. An Ulster-born Archbishop and a Children's Hospital | Ó hÓgartaigh, Margaret | Article in Journal | | 2014 |
| Notes and Documents. Launch of 'A People's Church' by Liam Swords, St Nathy's College, Ballaghaderreen, 28 February 2014 | Ó Muraile, Nollaig | Article in Journal | | 2014 |
| Notes and Documents. The disputed painting: the Garvey family, the Catholic Church and a feud over an Eakins | McConville, Kieran | Article in Journal | | 2014 |
| Notes from a diary : selected prose and poetry | Corbett, Anselm | Monograph or Collective Volume | Carmelite Order | 2003 |
| Notes of Bishop William Delany and John Lawlor, sculptor | Hamilton, Pádraig | Article in Journal | | 2020 |
| Notes of Mallow Parish in penal times | Kavanagh, Myra D. | Article in Journal | | 2018 |
| Notes on the parishes of Upper Ossory, situate in the Queen's county | Healy, W., C.C. | Article in Journal | | 1883 |
| Notes. An Irish chaplain on the Western Front | Harvey, A.D. | Article in Journal | | 2013 |
| Notes. Church attendance and the burial of Roman Catholic soldiers, 1839 | Kinsella, Anthony | Article in Journal | | 2003 |
| Notices sur les établissements religieux anglais, écossais et irlandais fondés à Paris avant la Révolution | Daumet, Georges | Article in Journal | | 1912 |
| Nuns and their networks in early modern Galway | Cunningham, Bernadette | Article in Book | | 2016 |
| Nuns in Ireland, 1850-1900: female religious in the economy and society | Clear, Caitriona Mary | Thesis | | 1984 |
| Nuns in the Catholic church in Ireland in the nineteenth century | Fahey, Tony | Article in Book | | 1987 |
| Nunziatura in Irlanda | Aiazzi, Giuseppe | Monograph or Collective Volume | | 1844 |
| Nurses, nuns and ladies : a study of class, ethnicity and religion in the Crimean war | Egan, Moira E. | Article in Book | | 2004 |
| Ó gheamhar go cruithneacht : beatha Mhaighréad Aighleart | Ní Chumhaill, Áine | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1990 |
| Ó Lios na nDaróg go Lobháin. A Fermanagh poet in Tridentine Europe | Ó Doibhlin, Breandán | Article in Journal | | 2017 |
| O my dark Rosaleen and Everton House | Nevin, Martin | Article in Journal | | 2013 |
| O'Brien, John Alysius (1878-1956) | Ronald, Heather | Article in Journal | | 1998 |
| O'Casey's 'The drums of Father Ned' in context | Murray, Christopher | Article in Book | | 2000 |
| O'Connell - the man | Horgan, John Joseph, 1881-1967 | Article in Book | | 1949 |
| O'Connell and German Catholicism during the Kulturkampf | Grogan, Geraldine F. | Article in Journal | | 2002 |
| O'Connell and German politics | Alter, Peter | Article in Book | | 1991 |
| O'Connell and Rome | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1980 |
| O'Connell and the English radicals | D'Arcy, Fergus A., 1943- | Article in Book | | 1980 |
| O'Connell and the Spanish civil war 1834-39 | O'Connell, Maurice | Article in Book | | 1992 |
| O'Connell reconsidered | O'Connell, Maurice | Article in Journal | | 1975 |
| O'Connell's first speech on Catholic affairs | Griffith, Francis | Article in Journal | | 1966 |
| O'Connell's Ireland | Marshall, D. | Article in Journal | | 1943 |
| O'Connell's last visit to Meath, Tara and Navan, 22 May 1845 | Condon, Sean | Article in Journal | | 2011 |
| O'Connell, Cardinal Cullen and expatriate nationalism | Steele, D. | Article in Book | | 1980 |
| O'Connell, Davis and the Colleges Bill | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| O'Connell, Davis and the Colleges Bill | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Monograph or Collective Volume | Basil Blackwell | 1948 |
| O'Connell, Genova e il Collegio Irlandese | Hanley, Jean | Article in Book | | 1990 |
| O'Connell, Montalembert and the birth of Christian democracy in France | Joannon, Pierre | Article in Book | | 1991 |
| O'Growney - one hundred years on | Ó Muirí, Damien | Article in Journal | | 1994 |
| O'Hanlon of 'The Irish Saints' | Carey, F. P. | Article in Journal | | 1955 |
| O'Sullivan Beare's rout of English at Ballyhea | Meagher, Jim | Article in Journal | | 1987 |
| Obispos irlandeses y la Monarquía Hispánica en el siglo XVI | García Hernán, Enrique | Article in Book | | 2003 |
| Obituary : Monsignor P. J. Brophy (1919-1998) | McK., D. W. | Article in Journal | | 1998 |
| Obituary : Rev. Timothy Corcoran, S. J. | Anonymous | Article in Journal | | 1946 |
| Obituary : V. Rev. Canon Meehan, P.P., Kilronan | Anonymous | Article in Journal | | 1945 |
| Obituary and Bibliography of Hugh Fenning OP | Cunningham, John M. | Article in Journal | | 2020 |
| Obituary of Brother Edmund Ignatius Rice | Smith, David | Article in Journal | | 2002 |
| Obituary. Fr. Paddy Gallagher | King, C. A. | Article in Journal | | 1996 |
| Obituary. Patrick J. Corish 1921-2013 | O'Connor, Thomas | Article in Journal | | 2014 |
| Obituary. Patrick J. Corish, 1921-2013 | Editor, The | Article in Journal | | 2013 |
| Occasions of faith : an anthropology of Irish Catholics | Taylor, Lawrence J. | Monograph or Collective Volume | Lilliput Press | 1997 |
| Occupation and ethnicity : the Irish in New Brunswick | Toner, Peter M. | Article in Journal | | 1988 |
| Of faith and fatherland : churches and states in Ireland from the Act of Union to the Belfast Agreement, 1800-1998 | Ó Corráin, Daithí | Article in Book | | 2023 |
| Ógra Éireann : spiorad iontach Gaelach á chothú | Ó Catháin, M. F. | Article in Book | | 1996 |
| Oideadh an Athar Uí Shíthigh | De Bhail, Tomás | Monograph or Collective Volume | | 1954 |
| Oidheadh an Athar Ui Shíthigh | de Bhial, Tomás, 1884-1954 | Monograph or Collective Volume | The Stationery Office | 1954 |
| Oilibhéar Pluincéid | Ó Fiaich, Tomás | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 1976 |
| Old Blarney (special issue on the Sisters of Charity in Blarney 1892-1990) | Mulcahy, J. | Article in Journal | | 1991 |
| Old English Catholicism in Chester documents, 1609-19 | Mac Cuarta, Brian | Article in Journal | | 2003 |
| Old English views of Gaelic Irish history and the emergence of an Irish Catholic nation | Finnegan, David | Article in Book | | 2011 |
| Old Fintona : a history of the Catholic parish of Donaghcavey in county Tyrone | Ó Gallachair, Pádraig | Monograph or Collective Volume | Cumann Seanchais Chlochair | 1974 |
| Old St Malachy's | Paterson, T. G. F. | Article in Book | | 2013 |
| Old St Malachy's, 1752-1938 | Paterson, T. G. F.,Ó hÁdhmaill, Pádraig | Article in Book | | 2013 |
| Old St Mary's, 1784-1984 | Macaulay, AmbroseRogers, Patrick, | Monograph or Collective Volume | Howard Publications | 1984 |
| Old St. Malachy's | Paterson, T. G. F. | Article in Journal | | 1955 |
| Oldtown : a chapel-village of north County Dublin | Jenkins, William | Article in Journal | | 1992 |
| Oliver : the story of the martyred archbishop of Armagh written for boys and girls | Gaffney, H. M. | Monograph or Collective Volume | Gill | 1946 |
| Oliver Cromwell's Policy toward the English Catholics : The Appraisal by Diplomats, 1654-1658 | Loomie, Albert Joseph | Article in Journal | | 2004 |
| Oliver Cromwell, priestcraft, and the 'deluded and seduced' people of Ireland | Morrill, John | Article in Book | | 2019 |
| Oliver Kelly, Archbishop of Tuam, 1815-1834 | Claffey, Anthony J. | Article in Book | | 2006 |
| Oliver Plunkett, 1 : Ireland's new saint | Ó Fiaich, Tomás | Monograph or Collective Volume | Veritas | 1975 |
| Oliver Plunkett, 2 : In his own words | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1975 |
| Oliver Plunkett, Francis Mac Donnell, O.F.M., and the mission to the Hebrides | Giblin, Cathaldus | Article in Journal | | 1975 |
| Oliver Plunkett, part I : Ireland's new saint; part II : in his own words | Forristal, DesmondÓ Fiaich, Tomás | Monograph or Collective Volume | Our Sunday Visitor by arrangement with Veritas Publications (Dublin) | 1975 |
| Olivia Mary Taaffe, 1832-1918 : foundress of St Joseph's Young Priests Society | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1995 |
| Olivia Taaffe, 7 Eblana Terrace, Kingstown | Clarke, Brian | Article in Journal | | 1996 |
| On Church Grounds : Political Funerals and the Contest to Lead Catholic Ireland | Brophy, Thomas J. | Article in Journal | | 2009 |
| On Father Francis MacMahon | | Article in Journal | | 1956 |
| On His Majesty's Secret Service: Irish Catholic Clerics and the House of Stuart | Ó Ciardha, Éamonn | Article in Book | | 2015 |
| On history repeating itself, or the Orangeman and the Pope, by and Ulster imperialist | Wilson, Alec G. | Article in Journal | | 1912 |
| On Hugh O'Donnell of Larkfield | Ó Tuathail, Éamonn | Article in Journal | | 1941 |
| On mission to Mexico : Michael Wadding, SJ, of Waterford (1587-1644) | Hazard, Benjamin | Article in Book | | 2015 |
| On show to the world : the Eucharistic Congress, 1932 | O'Dwyer, Rory | Article in Journal | | 2007 |
| On the birth of the modern Irish state : the Larkin thesis | Lee, J.J. (John Joseph), 1942- | Article in Book | | 2000 |
| On the Irish waterfront : the crusader, the movie, and the soul of the port of New York | Fisher, James Terence | Monograph or Collective Volume | Cornell University Press | 2009 |
| On the other side of the ocean : John Stritch, SJ (1616-81) and Irish Catholic missionaries in the West Indies | Binasco, Matteo | Article in Book | | 2015 |
| On the structure of wealth-holding in pre-Famine Ireland | Cummins, Neil J. ; Ó Gráda, Cormac | Article in Journal | | 2021 |
| On the trail of Mr. O'B. | Tweed, Tommy | Article in Journal | | 1975 |
| Once a brother : an Irish Christian Brother's story | Power, Patrick C. | Monograph or Collective Volume | Appletree | 2008 |
| Once a soldier : Brother Aloysius J. Howlin, papal zouave and patrician brother | Walker, Linus H. | Monograph or Collective Volume | Patrician Brothers | 1977 |
| Once upon a hill : love in troubled times | Patterson, Glenn, 1961- | Monograph or Collective Volume | Bloomsbury | 2008 |
| One hundred years ago. Excerpts from the Cork Examiner 1918 | Caplice, John | Article in Journal | | 2018 |
| One hundred years with the Clonard redemptorists | Grant, James | Monograph or Collective Volume | Columba | 2003 |
| One island, two nations? : a political geographical analysis of the national conflict in Ireland | Pringle, Denis G. | Monograph or Collective Volume | Research studies | 1985 |
| Open-air Mass in the Donegal mountains, 1867 | O'Hara, Aidan | Article in Journal | | 2018 |
| Operation Demetrius and its aftermath : a new history of the use of internment without trial in Northern Ireland, 1971-75 | McCleery, Martin J. | Monograph or Collective Volume | Manchester UP | 2015 |
| Opportunity and the minority middle class : a comparison of blacks in the United States and Catholics in Northern Ireland | Hout, Michael | Article in Journal | | 1986 |
| Opposing the "Modern World" : the cult of the Virgin Mary in Ireland, 1965-85 | Donnelly, James S., Jr | Article in Journal | | 2005 |
| Opposite religions still? : interpreting Northern Ireland after the conflict | Lambkin, Brian | Monograph or Collective Volume | Avebury | 1996 |
| Opposition to pilgrimage in tenth-century Ireland | Boyle, Elizabeth | Article in Book | | 2015 |
| Option for the poor : Irish Columbans in Lima, Peru | Collins, Neil | Article in Book | | 2015 |
| Oracles of God : the Roman Catholic church and Irish politics 1922-37 | Murray, Patrick | Monograph or Collective Volume | University College Dublin Press | 2000 |
| Orange and green : Belfast, 1832-1912 | Baker, Sybil E. | Article in Book | | 1973 |
| Orange and green, 1912-62 | Jeffery, Keith | Article in Book | | 1985 |
| Ordinary lives : the private lives of three generations of Ireland's professional classes | Farmar, Tony | Monograph or Collective Volume | Gill & Macmillan|A. & A. Farmar | 1995 |
| Orestes A. Brownson on Irish immigrants and American nativism | McDaniel, Isaac | Article in Journal | | 1981 |
| Origins of the modern Irish missionary movement : the 'Missions Africaines de Lyons' in Cork 1876-1883 | Hogan, Edmund M. | Article in Journal | | 1981 |
| Origins of the present troubles in Northern Ireland | Pipe, Caroline Kennedy | Monograph or Collective Volume | Longman | 1997 |
| Os Irlandeses perante a inquisição Portuguesa: réus e reduzidos (séculos XVI-XVIII) | Mendes Drumond Braga, Isabel M. R., | Article in Book | | 2010 |
| Other martyrs | Anonymous | Article in Journal | | 1991 |
| Oughteragh in 1826 : a case study of rural sectarianism | Logan, John | Article in Journal | | 1976 |
| Our greatest treasure : the true faith | Kearney, John | Monograph or Collective Volume | Burns & Oates | 1942 |
| Our Lady of Coogee : Marian visions in Irish Australia | O'Connell, Mary | Article in Journal | | 2009 |
| Our Lady of Dublin | MacLeod, Catriona | Article in Journal | | 1942 |
| Our Lady's Well | MacMahon, Bryan | Article in Book | | 2012 |
| Our man in the Vatican | O'Brien, Martin | Article in Journal | | 2011 |
| Our Tipperary-born martyrs | Ahern, Michael | Article in Book | | 1993 |
| Out of due time : Wilfred Ward and the Dublin Review | Scotti, Paschal, 1961- | Monograph or Collective Volume | Catholic University of America Press | 2006 |
| Out of the shadows : emerging secondary schools in the Archdiocese of Tuam, 1940-69 | Waldron, Kieran | Monograph or Collective Volume | Nordlaw Books | 2002 |
| Outside the glow : Protestants and Irishness in independent Ireland | Crawford, Heather K. | Monograph or Collective Volume | University College Dublin Press | 2010 |
| Over 'Bloody Sunday' en 'Good Friday' : religieus geweld in Ulster | Bosscher, Doeko | Article in Journal | | 2005 |
| Overseas Missions | Carey, Hilary M. | Article in Book | Oxford University Press | 2003 |
| Owen Maginn : a missionary's story | O'Shea, Michael, 1944- | Monograph or Collective Volume | Society of African Missions | 2009 |
| Owen Roe O'Neill and the struggle for catholic Ireland | Casway, J. I. | Monograph or Collective Volume | | 1984 |
| Paddy bogside | Doherty, PatrickHegarty, Peter | Monograph or Collective Volume | Mercier Press | 2001 |
| Padraig de Brún : a poet of enormous unacknowledged achievement | Ó Coigligh, Ciarán | Article in Journal | | 2014 |
| Pádraigín an Doiminiceach as Caiseal Mumhan [c. 1604-54] | Valkenburg, Augustine | Article in Book | | 1986 |
| Pádraigín Haicéad, O.P., 1604?-1654 | Valkenburg, Augustine | Article in Journal | | 1985 |
| Padre Fahy : biografía de Antonio Domingo Fahy, O.P., misionero Irlandés en la Argentina 1805-1871 | Ussher, Santiago M. | Monograph or Collective Volume | # | 1952 |
| Padre Pio : the Irish connection | | Monograph or Collective Volume | Mainstream | 2007 |
| Paenitentiarium S. Maol Ruain | Mooney, Canice | Article in Journal | | 1954 |
| Pages from a Jesuit missioner's diary | Finegan, Francis | Article in Journal | | 1974 |
| Papal awards in the Drogheda area | Durnin, Peter | Article in Journal | | 1992 |
| Papal briefs to Fr. Mansoni, papal nuncio to Ireland | Jones, Frederick | Article in Journal | | 1953 |
| Papal infallibility and the possible Leighlin nexus. Cardinal Moran remembered on the 100th anniversary of his death | Nevin, Martin | Article in Journal | | 2011 |
| Papal primacy then and now | O'Connell, Patrick | Article in Book | | 1970 |
| Papal privileges for Ulster churches, 1608 | Mac Cuarta, Brian | Article in Journal | | 2008 |
| Papal progress | Robbins, Keith | Article in Journal | | 1982 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-23, In Franciscan Library, Killiney : part 3, April 1816 | Giblin, Cathaldus | Article in Journal | | 1982 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-24, in Franciscan Library Killiney, Part 5, Jan - May 1817 | Giblin, Cathaldus | Article in Journal | | 1984 |
| Papers of Richard Joachim Hayes, O. F. M., 1810-24, in Franciscan Library, Killiney : part 4, May - Dec 1816 | Giblin, Cathaldus | Article in Journal | | 1983 |
| Papers of Richard Joachim Hayes, O.F.M., in Franciscan Library, Killiney, 9 : 1817-1820 | Giblin, Cathaldus | Article in Journal | | 1991 |
| Papers of Richard Joachim Hayes, OFM, 1810-1824, in the Franciscan Library, Killiney : part 8, August-December 1817 | Giblin, Cathaldus | Article in Journal | | 1988 |
| Papist and Protestant in the Wild Goose time | O'Sullivan, P. S. | Article in Journal | | 1980 |
| Papists, Protestants and the Irish in London, 1835-70 | Gilley, Sheridan | Article in Journal | | 1972 |
| Papists, protestants and the Irish in London, 1835-70 | Gilley, Sheridan | Article in Book | | 1972 |
| Paris of the Irish | Lennon, M. J. | Article in Journal | | 1955 |
| Parish by parish: constructing Chicago as Catholic space | Skerrett, Ellen | Article in Book | | 2012 |
| Parish Church on fire. From "The People" 13 February 1892 | | Article in Journal | | 2011 |
| Parish clergy since the 1700s | MacMahon, Bryan | Article in Book | | 2012 |
| Parish missions and preaching the word of God | McConvery, Brendan | Article in Book | | 2013 |
| Parish of Termonfechin : a faith celebration : the chalice of salvation | Quinn, Sean | Monograph or Collective Volume | Parish of Termonfechin | 1990 |
| Parish Priest of Dun Laoghaire honoured by The Equestrian Order of the Holy Sepulchre of Jerusalem | Anonymous | Article in Journal | | 2005 |
| Parish priests and church of St. Mary's, 1320-1984 | Pike, Dan | Monograph or Collective Volume | The author | 1984 |
| Parish priests and curates of the parishes of Buttevant and Churchtown 1704-1953 | McCarthy, Jim | Article in Journal | | 1990 |
| Parish priests and curates who served in New Ross, 1669-2001 | Anonymous | Article in Book | | 2001 |
| Parish priests for 400 years | Murphy, Hilary | Article in Journal | | 1987 |
| Parish priests of Armagh since the Reformation | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Parish priests of Armagh, 1752-1834 | Paterson, T. G. F. | Article in Book | | 2013 |
| Parish priests of Cloughjordan | Whyte, Edward | Article in Journal | | 1985 |
| Parish priests of Cloughjordan. Part iv | Whyte, Edward | Article in Journal | | 1996 |
| Parish priests of Cloyne | Kelleher, Thomas | Article in Book | | 1994 |
| Parish priests of Drangan & Cloneen, 1826-1993 | Hall, Michael | Article in Book | | 1993 |
| Parish priests of Kilmore | McKiernan, Francis | Article in Journal | | 1972 |
| Parish priests of Mullaghbawn | Ó Fiaich, Tomás | Article in Journal | | 1974 |
| Parish Registers | Walsh, Pat | Article in Journal | | 2001 |
| Parnassus in Waterford. (Apropos of Latin Proses) | Wall, Thomas | Article in Journal | | 1947 |
| Parnell and the Catholic church | Woods, C. J. (Christopher John) | Article in Book | | 1991 |
| Parsons, priests and the people : the rise of Irish anticlericalism, 1785-9 | Burns, R. E. | Article in Journal | | 1962 |
| Parties, patriots and undertakers : parliamentary politics in early Hanoverian Ireland | McNally, Patrick | Monograph or Collective Volume | Four Courts | 1997 |
| Partition, the Catholic church and the diocese of Clogher, c.1912-1928 | Phoenix, Eamon | Article in Book | | 2005 |
| Passlands graveyard | Monasterevin Historical Society | Article in Journal | | 2008 |
| Pastoral dimensions of the Northern Ireland conflict. The Presbyterian Church; the Catholic Church; the Church of Ireland | Clifford, GerardDunlop, JohnElliott, Eric | Article in Journal | | 1982 |
| Patriarch of Cloyne : the career of Dean O Regan, 1808-1898 | O'Sullivan, Patrick | Article in Journal | | 1989 |
| Patrick Bonaventure Kennedy O.F.M. : 1855-1924 | Egan, Bartholomew, OFM | Article in Journal | | 1989 |
| Patrick Cardinal O'Donnell | Silke, John J. | Article in Journal | | 1988 |
| Patrick Corish’s Maynooth [review article] | Fanning, Ronan | Article in Journal | | 1995 |
| Patrick Dorrian, bishop of Down and Connor, 1865-85 | Macaulay, Ambrose | Article in Journal | | 1989 |
| Patrick F. Scanlan, The Brooklyn Tablet and the New Deal | McNamara, Patrick J. | Article in Journal | | 1993 |
| Patrick Fallon : last bishop of Kilmacduagh and Kilfenora | Coen, Martin | Article in Journal | | 1984 |
| Patrick Fitzsimon and Springfield College | Ó Murchadha, Ciarán | Article in Journal | | 2019 |
| Patrick James O'Byrne, Dean of Armagh (1810-19) and the contemporary scene | Tohall, Patrick | Article in Book | | 2013 |
| Patrick Kavanagh : early religious work and devotional influences on his work | Agnew, Úna | Article in Journal | | 1994 |
| Patrick Kavanagh: poet and prophet | Ó Siadhail, Micheál | Article in Journal | | 2013 |
| Patrick Kelly bishop of Richmond | Keane, Frank | Article in Journal | | 2004 |
| Patrick Lavallin and the Popish Plot | Mulcahy, J. | Article in Journal | | 1994 |
| Patrick MacGill, 1890-1963 : an alternative vision | Aspinwall, Bernard | Article in Book | | 1992 |
| Patrick MacMahon, bishop of Killaloe, 1829-1836 | Clancy, John | Article in Journal | | 1941 |
| Patrick Morris and Newfoundland Irish immigration | Mannion, John | Article in Book | | 1986 |
| Patrick Murray : the man and his writings | McNamara, Kevin | Article in Journal | | 1982 |
| Patrick Murray as theologian | Corbett, Thomas | Article in Journal | | 1982 |
| Patrick O'Donnelly, 1649-1719, Bishop of Dromore. Material in the notarial files in Paris and the propaganda archives in Rome | Swords, Liam | Article in Journal | | 1993 |
| Patrick O'Donovan | Coughlan, Charlie | Article in Journal | | 2012 |
| Patrick O'Farrell reassessed - a view from Ireland | Maume, Patrick | Article in Journal | | 2013 |
| Patriotic opinions of some Munster priests, 1847-1882 | Collins, John T. | Article in Journal | | 1959 |
| Patrolmen and Peelers : immigration, urban culture, and 'the Irish police' in Canada and the United States | Jenkins, William | Article in Journal | | 2002 |
| Patron of partition : Bishop Thomas Quinlan, 1896-1970 | McHale, Conor | Monograph or Collective Volume | Rednal | 1995 |
| Patrons and architects and the creation of Roman Catholic church architecture in nineteenth-century Dublin | Grimes, Brendan | Article in Journal | | 2015 |
| Patterns of episcopal leadership | Fogarty, Gerald | Monograph or Collective Volume | Macmillan | 1989 |
| Patterns of language and ritual in Sean O'Casey's language | Ayling, Ronald | Article in Book | | 1977 |
| Patterns of settlement in the Catholic parishes of Ballymore and Mullaghbrack in the 17th and 18th centuries | McGleenon, C. F. | Article in Journal | | 1993 |
| Paul Cardinal Cullen : portrait of a practical nationalist | O'Carroll, Ciaran | Monograph or Collective Volume | Veritas | 2008 |
| Paul cardinal Cullen and the shaping of modern Irish nationalism | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Paul Cullen and his contemporaries : with their letters from 1820 to 1902, 5 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1977 |
| Paul Cullen and his contemporaries, Vol. 4 : with their letters from 1820 - 1902 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1974 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 2 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1963 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol. 3 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1965 |
| Paul Cullen and his contemporaries, with their letters from 1820-1902, Vol.1 | Mac Suibhne, Peadar | Monograph or Collective Volume | Leinster Leader | 1961 |
| Paul Cullen and the declaration of papal infallibility | Tanner, Norman | Article in Book | | 2011 |
| Paul Cullen and the Irish College, Paris | Chambers, Liam | Article in Book | | 2011 |
| Paul Cullen and the remaking of Catholicism in the Antipodes | Sweetman, Rory | Article in Book | | 2011 |
| Paul Cullen and the visual arts | Kane, Eileen | Article in Book | | 2011 |
| Paul Cullen in the Irish Conservative imagination | Shields, Andrew | Article in Book | | 2011 |
| Paul Cullen, Italy and the Irish Catholic imagination, 1826-70 | Barr, Colin | Article in Book | | 2014 |
| Paul Cullen, John Henry Newman and the movement to create a Catholic University in Ireland, 1854-60 | Barr, Colin | Thesis | | |
| Paul Cullen, John Henry Newman, and the Catholic University of Ireland, 1845-1865 | Barr, Colin | Monograph or Collective Volume | University of Notre Dame Press | 2003 |
| Paul Cullen: cardinal and politician | Senior, Hereward | Article in Book | | 1978 |
| Paul Higgins, a man of legend in Killea | Hayes, William J. | Article in Journal | | 1995 |
| Peace pays a price : a study of Margaret Anna Cusack the nun of Kenmare | Vidulich, Dorothy A. | Monograph or Collective Volume | Sisters of St Joseph of Peace | 1990 |
| Pearse's sacrifice : Christ and Cuchulain crucified and risen in the Easter Rising, 1916 | Gilley, Sheridan | Article in Book | | 1987 |
| Pedagogy and reform : the influence of Peter White on Irish scholarship in the Renaissance | Lennon, Colm | Article in Book | | 2007 |
| Pedro Sinnot : la obra intelectual de un clérigo Irlandés en España | Velasco Moreno, Eva | Article in Book | | 2000 |
| Peggie O'Neill McCarthy remembers the day of the Stations in bygone times | McCarthy, Peggie O'Neill | Article in Journal | | 2003 |
| Peig Sayers and the vernacular of the storyteller | MacMahon, Bryan, 1909-1998 | Article in Book | | 1977 |
| Penal days | Ó Doibhlin, Diarmaid | Article in Book | | 2000 |
| Penal mass sites in the Glens | McKavanagh, Patrick | Article in Journal | | 1973 |
| Penal mass sites in the Kerry diocese | Regan, Pádraig | Article in Book | | 1999 |
| Perceptions of the British Isles and Ireland among the Catholic exiles : the case of Robert Corbington, SJ | Davidson, Peter | Article in Book | | 2010 |
| Perennial Problems of Scottish Catholics : Morale, Personnel and Money | Aspinwall, Bernard | Article in Book | | 2002 |
| Persecuting zeal : a portrait of Ian Paisley | Cooke, Dennis | Monograph or Collective Volume | Brandon | 1996 |
| Persecution of Catholics in Drogheda, in 1606, 1607 and 1611. (From a contemporary MS. preserved in the Irish College, Salamanca. Carton 40) | | Article in Journal | | 1917 |
| Perspectives in American Catholicism | Ellis, John Tracy | Monograph or Collective Volume | Helicon | 1963 |
| Peter Connolly (1927-1987) | Egan, Desmond | Article in Journal | | 1987 |
| Peter E. Magennis, priest and patriot, 1868-1937 | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1975 |
| Peter Grace, an Irish settler in early Auckland, New Zealand | O'Reilly, Geraldene | Article in Journal | | 2014 |
| Peter Kenney SJ, 1779-1841 : the restoration of the Jesuits in Ireland, England, Sicily and North America | Morrissey, Thomas J. | Monograph or Collective Volume | Catholic University of America Press | 2014 |
| Peter Lombard (1554-1625), prelate, politician, pragmatist | Smith, David | Article in Journal | | 2000 |
| Peter McLaughlin Raphoe and Derry 1760-1840 | Donnelly, Philip | Article in Journal | | 2006 |
| Peter McVerry, Brendan Ryan agus Catherine Dunphy ag caint le Peadar Kirby | Todhchaí na hEaglaise Caitlicí in Éirinn | Article in Journal | | 1991 |
| Peter Walsh and the Confederation of Kilkenny | Brennan, James | Article in Journal | | 1990 |
| Peter Walsh and the remonstrance | Mulrean, B. | Article in Journal | | 1946 |
| Peter Walsh, O.F.M., and the Remonstrance, 1660-65 | Cosgrave, Patrick | Thesis | | 1965 |
| Peter Yorke and progressionism in California, 1908 | Walsh, James P. | Article in Journal | | 1975 |
| Peter's pence : official Catholic discourse and Irish nationalism in the nineteenth century | Taylor, Lawrence J. | Article in Journal | | 1993 |
| Peters pence collection, Ballymore Eustace; the parish of Enniskerry, 1880 | Freeman's Journal | Article in Journal | | 1999 |
| Phases of Irish history : Wadding and the nuncio | Doyle, W. | Article in Journal | | 1940 |
| Philip II of Spain | Petrie, Charles, Sir | Monograph or Collective Volume | Eyre & Spottiswoode | 1963 |
| Philip MacDevitt, bishop of Derry, 1766-97 | Donnelly, Philip | Article in Journal | | 2007 |
| Phoenix Park, Blessed John Paul and the word of the cross | Leahy, Brendan | Article in Book | | 2013 |
| Photographer extraordinary : the life and work of Father Browne | O'Donnell, E. E. | Article in Journal | | 1990 |
| Pieces of Irish history, illustrative of the condition of the Catholics of Ireland, of the origin and progress of the political system of the United Irishmen; and of their transactions with the Anglo-Irish government | MacNeven, W. J. | Monograph or Collective Volume | | 1807 |
| Pietas Austriaca and ‘Dispensers of Royal Authority’: The early Irish Colleges and Habsburg cultural strategies | Downey, Declan M. | Article in Book | | 2018 |
| Piety and nationalism : lay voluntary associations and the creation of an Irish-Catholic community in Toronto, 1850-1895 | Clarke, Brian P. | Monograph or Collective Volume | McGill-Queen's University Press | 1993 |
| Pii antistitis icon, or the Life of Francis Kirwan, bishop of Killala, 1669 | Lynch, John, d. in or after 1677 | Monograph or Collective Volume | The Stationery Office | 1951 |
| Pilgrimage of an Irish priest to the holy land in 1822 | Faulkner, Anselm | Article in Journal | | 1952 |
| Pilgrimages | Barber, Richard | Monograph or Collective Volume | | 1991 |
| Pilgrims in 1893 | O'Reilly, George H. | Article in Journal | | 1999 |
| Pioneer Catholicism in Eastern and Southern Nevada, 1864-1931 | Olson, J. S. | Article in Journal | | 1983 |
| Pioneer Jesuits in northern Mexico | Dunne, Peter Masten | Monograph or Collective Volume | Greenwood Press | 1979 |
| Pious occupations : female activism and the Catholic revival in eighteenth-century Ireland | Raughter, Rosemary | Article in Book | | 2005 |
| Pitch my tent in the Lord : memories of Fr Michael Morahan, S.J. | Faherty, Padhraic | Monograph or Collective Volume | P. Faherty | 1993 |
| Playing Catholic against Protestant : British intervention in Catholic relief in Ireland, 1778 | Lyons, Claire | Article in Journal | | 2013 |
| Pobal ar scáth a chéile trí shúile an bhéaloidis | Power, Nuala | Article in Journal | | 2014 |
| Poet and priest : Gerard Manley Hopkins, myth and reality | White, Norman | Article in Journal | | 1990 |
| Pogroms : 1857-1935 | Campbell, T. J. | Article in Journal | | 1943 |
| Pól Ó hUiginn | Ó Fiaich, Tomás | Article in Journal | | 1976 |
| Policing the press: censorship, family planning, and the press in Ireland, 1929–67 | O'Brien, Mark | Article in Journal | | 2021 |
| Policing under fire : ethnic conflict and police-community relations in Northern Ireland | Weitzer, Ronald John | Monograph or Collective Volume | State Univ. of New York Press | 1995 |
| Policy on the run : Henry II and Irish Sea diplomacy | Hays, L.Jones, E. D. | Article in Journal | | 1990 |
| Political participation in early Stuart Ireland | Darcy, Eamon | Article in Journal | | 2017 |
| Political parties and social change in Ulster : the case of the SDLP | McAllister, Ian | Article in Journal | | 1976 |
| Political priests: the Parnell split in Meath | Lawlor, David | Article in Journal | | 2010 |
| Political problems 1860-78 | Corish, Patrick J. | Monograph or Collective Volume | Gill | 1967 |
| Political problems, 1850-60 | Whyte, J. H. | Monograph or Collective Volume | Gill | 1967 |
| Political strategy in the service of religious and cultural modernisation : the public career of Florence Conry, c.1560-1629 | Hazard, Benjamin | Thesis | | 2008 |
| Political Theology | Gillett, Christopher P. | Article in Book | Oxford University Press | 2023 |
| Politics and administration, 1815-70 | Kinealy, Christine | Article in Book | | 2011 |
| Politics and the churches in Northern Ireland | Elliott, Eric | Article in Book | | 1986 |
| Politics and war in the three Stuart kingdoms, 1637-49 | Scott, David A. | Monograph or Collective Volume | Palgrave Macmillan | 2004 |
| Politics in the streets : the origins of the civil rights movement in Northern Ireland | Purdie, Bob | Monograph or Collective Volume | | 1990 |
| Politics in Ulster in the age of Emancipation and Reform, 1825-35 | Kingon, Suzanne | Thesis | | 2006 |
| Politics, education and religion in the age of revolution : Bishop Patrick Foley of Kildare and Leighlin, 1896-1926 | McGrath, Thomas | Article in Book | | 2008 |
| Politics, interdenominational relations and education in the public ministry of Bishop James Doyle of Kildare and Leighlin, 1786-1834 | McGrath, Thomas | Monograph or Collective Volume | Four Courts | 1999 |
| Politics, religion and economy : Cork in the 17th century | Irwin, Liam | Article in Journal | | 1981 |
| Politics, religion and the press : Irish journalism in mid-Victorian England | McNicholas, Anthony | Monograph or Collective Volume | Lang | 2007 |
| Politics, sectarianism and the 'failure' of trade unionism in Northern Ireland : the case of garment unions in Derry, 1945-1968 | Finlay, Andrew | Article in Journal | | 1992 |
| Pontifica Hibernica : medieval papal documents concerning Ireland 640-1261, vol. 2 | | Monograph or Collective Volume | Gill | 1965 |
| Pope Clement XI and the British Isles : the inventory of Fondo Albani 163-168 | Burns, C. S. (Charles S.) | Article in Book | | 1991 |
| Popery and Anti-Popery in Britain and Ireland | Ford, AlanLake, PeterQuestier, Michael | Article in Book | | 2023 |
| Popery and progress : anti-Catholicism in mid-nineteenth century Nova Scotia | Johnston, Andrew John Bayly | Article in Journal | | 1984 |
| Popery and Protestantism, Civil and Religious Liberty : The Disputed Lessons of Irish History, 1690-1812 | Hill, Jacqueline R. | Article in Journal | | 1988 |
| Popery in Scotland : Image and Reality, 1820-1920 | Aspinwall, Bernard | Article in Journal | | 1986 |
| Popish clergy in the diocese of Derry in 1704 | Ó Doibhlin, Diarmaid | Article in Journal | | 1980 |
| Popular and unpopular religion : a view from early modern Ireland | Gillespie, Raymond | Article in Book | | 1998 |
| Popular anti-Catholicism in mid-Victorian England | Paz, D. G. | Monograph or Collective Volume | Stanford University Press | 1992 |
| Popular Catholicism in Irish New York, c.1900 | McLeod, Hugh | Article in Book | | 1989 |
| Popular Catholicism in twentieth-century Ireland : locality, identity and culture | de Cléir, Síle | Monograph or Collective Volume | | 2017 |
| Popular politicization, Defenderism and the Catholic question | Smyth, Jim | Article in Book | | 1990 |
| Popular politics and the Irish Catholic Church : the rise and fall of the independent Irish party, 1850-1859 | Knowlton, Steven R. | Monograph or Collective Volume | Garland | 1991 |
| Popular preaching and the Jesuit mission in seventeenth-century Ireland | Cunningham, Bernadette | Article in Book | | 2022 |
| Population, providence and empire: the churches and emigration from nineteenth-century Ireland | Roddy, Sarah | Monograph or Collective Volume | Manchester University Press | 2014 |
| Portraits of Irish migrants during the Great Famine (1845-1852) | Vaughan, Géraldine | Article in Journal | | 2014 |
| Positio super introductione causae | Anonymous | Monograph or Collective Volume | | 1914 |
| Post-war social change and the Catholic community in Northern Ireland | Morgan, Michael | Article in Journal | | 1988 |
| Postmodern Europe and the resources of communal identities in Northern Ireland | McCall, Cathal | Article in Journal | | 1998 |
| Pouvoir et perception : une communaute Irlandaise au Quebec au dix-neuvieme siecle | McQuillan, Aidan | Article in Journal | | 1999 |
| Power, wealth and Catholic identity in Ireland, 1850-1900 | O'Neill, Ciaran | Article in Book | | 2013 |
| Prayers before Mass : a devotional classic | De Blacam, Aodh | Article in Journal | | 1940 |
| Pre-famine protestant post-famine catholic : do emigrants' letters reflect the steereotypes? | Parkhill, Trevor | Article in Book | | 2005 |
| Precarious childhood in post-independence Ireland | Maguire, Moira J. | Monograph or Collective Volume | Manchester University Press | 2009 |
| Precious memories of the Old Kilmacud Church | Cahill, Matt | Article in Journal | | 2022 |
| Prelude to confiscation : a survey of Catholic estates in Leinster in 1690 | Cronin, John J. (John Jeremiah), 1971-Loeber, RolfMurtagh, Harman | Article in Journal | | 2001 |
| Prequels: the Irish European diaspora | O'Connor, Thomas | Article in Book | | 2019 |
| Presbyterian missionary activity among Irish Roman Catholics in the nineteenth century | Rodgers, Robert J. | Thesis | | 1970 |
| Presbyterian-Roman Catholic relations in Ireland (1780-1975) | Barkley, John M. | Article in Journal | | 1981 |
| Presentation Convent burial ground, Maynooth | Riordan, Peter J. | Article in Journal | | 1998 |
| Presentation convents in county Tipperary 1806-1900 | Luddy, Maria | Article in Journal | | 1992 |
| Presentments of recusants in Dublin, 1617-1618 | Meagher, John | Article in Journal | | 1960 |
| Pride and tradition among the city's biggest problems | Rynne, Paul | Article in Journal | | 1968 |
| Priest of Ennis : Doctor Andrew Burke, 1650-1727 | Ó Dálaigh, Brian | Article in Journal | | 2007 |
| Priestly fictions : popular Irish novelists of the early 20th century. Patrick A. Sheehan, Joseph Guinam, Gerald O'Donovan | Candy, Catherine | Monograph or Collective Volume | Wolfhound Press | 1995 |
| Priests and Parishes | Champ, Judith | Article in Book | Oxford University Press | 2023 |
| Priests and people in pre-famine Ireland | Connolly, Sean J. | Monograph or Collective Volume | | 1981 |
| Priests and political activity in county Clare, 1800-1829 | Murphy, Ignatius | Article in Journal | | 1984 |
| Priests and proselytism in 19th-century Dublin | Johnson, Máirín | Article in Book | | 1992 |
| Priests and religious of Killaloe parish, Co. Clare | Kierse, Sean | Monograph or Collective Volume | Boru Books | 2000 |
| Priests in the independence movement of '98 | Hayes, Richard J., 1902- | Article in Journal | | 1945 |
| Priests in the independence movement, 1796-8 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1946 |
| Priests of 'ninety-eight' | de Vál, Seamus S. | Article in Journal | | 1997 |
| Priests of Armagh, 1834-2013 | Ó Fiaich, Tomás | Article in Book | | 2013 |
| Priests of Artrea | Ó Doibhlin, Diarmaid | Article in Journal | | 1980 |
| Priests of Derry 1820-1905 | Daly, Edward | Article in Journal | | 1980 |
| Priests of the diocese of Kilmore : Father Felix McCabe (c.1750-1816) | O'Connell, Philip | Article in Journal | | 1961 |
| Priests who died in the great famine | Grace, Daniel | Article in Journal | | 1997 |
| Priests, pikes and patriots : the Irish Catholic church and political violence from the Whiteboys to the Fenians | Kerr, Donal A. | Article in Book | | 2000 |
| Priests, publicans and the Irish poor : ethnic enterprise and migrant networks in mid-nineteenth-century Liverpool | Belchem, John | Article in Journal | | 2005 |
| Primary education | Murphy, Ignatius | Article in Book | | 1968 |
| Primate George Dowdall and the Marian restoration | Jefferies, Henry A. | Article in Journal | | 1998 |
| Primate Lombard and James I | Silke, John J. | Article in Journal | | 1955 |
| Prince Hohenlohe, Signor Pastorini and miraculous healing in early nineteenth-century Ireland | Geary, Laurence M. | Article in Book | | 1999 |
| Prince of the church : Patrick Francis Moran, 1830-1911 | Ayres, Philip | Monograph or Collective Volume | Miegunyah Press | 2007 |
| Printed Translations and Catholic Reformation | Goodrich, Jaime | Article in Book | | 2023 |
| Prison letters of Canon O'Kennedy | O'Kennedy, William, Canon | Article in Journal | | 2013 |
| Pro fide et patria?: the Catholic church and republicanism in Ireland, 1912-23 | O'Reilly, Noel | Thesis | | 1994 |
| Problems common to both protestant and catholic churches in eighteenth-century Ireland | Johnston, E. M. | Article in Book | | 1983 |
| Proclamation against Patrick MacCowan, priest, 16 July 1583 | | Article in Journal | | 1983 |
| Professor F. X. Martin O.S.A. (1922-2000) | W., P. F. | Article in Journal | | 2000 |
| Profile of an immigrant bishop : the early career of John Hughes | Lannie, Vincent Peter | Article in Journal | | 1965 |
| Progress in Reducing Catholic Disadvantage in Northern Ireland | Li, YaojunO'Leary, Richard | Article in Journal | | 2007 |
| Proposals to register Irish priests, 1756-7 | Brady, John, d.1963 | Article in Journal | | 1962 |
| Propugnaculum Catholicae veritatis | Bruodino, Antonio | Monograph or Collective Volume | [s.n.] | 1669 |
| Proselytism and perversion in West Clare | Power, Joe | Article in Journal | | 2006 |
| Prosopography of Irish students admitted to the Irish College, Rome, 1628-1798 [with index] | Binasco, MatteoOrschel, Vera | Article in Journal | | 2013 |
| Prosopography of staff of the Irish College, Paris c.1800-1939 | Begadon, Cormac | Article in Journal | | 2017 |
| Protecting the honour of the daughters of Eire : welfare policy for Irish female migrants to England, 1940–70 | Ewart, enrietta | Article in Journal | | 2013 |
| Protestant 'ideology', reconsidered : the case of discrimination | Nelson, S. | Article in Journal | | 1975 |
| Protestant - Catholic - Jew : an essay in American religious sociology | Herberg, Will | Monograph or Collective Volume | Doubleday | 1955 |
| Protestant Action and the Edinburgh | Rosie, Michael | Article in Book | | 2008 |
| Protestant and Catholic attitudes towards poverty : the Irish community and the development of the Saint Vincent de Paul Society in nineteenth-century Toronto | Parthun, Mary Lassance | Article in Book | | 1988 |
| Protestant form and Catholic fiction? | Vance, Norman | Article in Book | | 2005 |
| Protestant London, no Popery and the Irish poor, 1830-60 | Gilley, Sheridan | Article in Journal | | 1971 |
| Protestant London, no popery and the Irish poor, 1830-60 : 1, 1830-50; 2, 1850-60 | Gilley, Sheridan | Article in Journal | | 1971 |
| Protestant millenialism, political violence and the Ulster cobnflict | Gribben, Crawford | Article in Journal | | 2007 |
| Protestant reformations, 1550–1641 | Lennon, Colm | Article in Book | | 2018 |
| Protestant war : the 'British' of Ireland and the wars of the three kingdoms | Armstrong, Robert (Robert Matthew) | Monograph or Collective Volume | Manchester University Press | 2005 |
| Protestant, Catholic and Dissenter : the clergy and 1798 | | Monograph or Collective Volume | Columba | 1997 |
| Protestants and the 1826 Waterford county election | Broderick, Eugene | Article in Journal | | 1997 |
| Protestants in a Catholic state : a silent minority in Ireland | Mennell, Stephen | Article in Book | | 2000 |
| Protestants in a Catholic state : Ireland's privileged minority | Bowen, Kurt | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| Protestants, Catholics and Loyalty : an aspect of the conscription controversies, 1916-17 | Gilbert, Alan D. | Article in Journal | | 1971 |
| Protestants, Catholics, and university education: Trinity College Dublin in the age of revolution | Power, Thomas P | Monograph or Collective Volume | Wipf and Stock | 2023 |
| Proudly Irish : Susan Carthy of Bawnboy | Mannion, Patricia Jean | Article in Journal | | 1991 |
| Providence and exile in early seventeenth-century Ireland | Caball, Marc | Article in Journal | | 1994 |
| Providence my guide : the heroic force in the Knock shrine story | Coyne, JudyKennedy, Ethna | Monograph or Collective Volume | Mercier Press | 2004 |
| Providence, revolution and the conditional defence of the union : Paul Cullen and the Fenians | Kelly, Matthew | Article in Book | | 2011 |
| Provincial rivalries in eighteenth-century Ireland : an Irish Augustinian document | | Article in Journal | | 1972 |
| Psalms and slaughter : a study in bigotry | Grey, Tony | Monograph or Collective Volume | Heinemann | 1972 |
| Pseudo-Dionysius, Gilbert of Limerick and Innocent III : order, power and constitutional construction | Williamson, Shannon M. O. | Article in Book | | 2006 |
| Public Catholicism | O'Brien, David | Monograph or Collective Volume | Macmillan | 1989 |
| Public opinion and the foundation of the Catholic University of Ireland | Vale, Mary | Thesis | | 1952 |
| Public presence, public silence : nuns, bishops, and the gendered space of early Chicago | Brosnan, K. A. | Article in Journal | | 2004 |
| Public rituals and community power : St Patrick's Day parades in Lowell, Massachusetts, 1814-1874 | Marston, S. A. | Article in Journal | | 1989 |
| Public support of Catholic education in New York, 1825-42, some new aspects | Browne, Henry J. | Article in Journal | | 1953 |
| Publications of Irish catholic interest, 1700-1800 : an experimental check-list | Fenning, Hugh | Monograph or Collective Volume | | 1973 |
| Publishing for Catholic Ireland | McCarthy, Andrew | Article in Book | | 2011 |
| Pugin and Maynooth College | Gallagher, Caroline | Article in Book | | 2012 |
| Pugin at Maynooth : the neo-Gothic contribution of A. W. N. Pugin to Maynooth College | | Monograph or Collective Volume | St Patrick's College, Maynooth|NUI Maynooth | 2012 |
| Pulp facts and core fictions : translating a cathedral from Aghaboe to Kilkenny | Bradley, John, 1954-2014 | Article in Book | | 2015 |
| Pulpits and politics : anti-Catholicism in Boston in the 1880s and 1890s | Kennedy, Laurence | Article in Journal | | 2000 |
| Purity of blood and purity of faith in early modern Ireland | Downey, Declan M. | Article in Book | | 2005 |
| Putting hand to the plough : a memoir | O'Callaghan, Denis | Monograph or Collective Volume | Veritas | 2007 |
| Quis Separabit : The Order of St. Patrick and Anglo-Irish Relations, 1922-34 | Goldstein, Erik D. | Article in Journal | | 1989 |
| Rabharta agus mallmhuir i mBéal Feirste | Mac Maoláin, Breandán | Monograph or Collective Volume | Coiscéim | 2016 |
| Race et religion : les Acadians et la hiérarchie Catholique Irlandaise du Nouveau-Brunswidk | Spigelman, Martin S. | Article in Journal | | 1975 |
| Racism, religion and social prejudice : Irish Catholic clubs, soccer and Scottish society. 1 : the historical root of prejudice; 2 : social identities and conspiracy theories | Finn, G. P. T. | Article in Journal | | 1991 |
| Radharc ar gcúl : A backward glance. Foras Feasa ar Éirinn and the historical origins of Irish Catholic identity | Cunningham, Bernadette | Article in Journal | | 2001 |
| Raising Dublin, raising Ireland : a friar's campaigns : Father John Spratt, O.Carm. (1796-1871) | D'Arcy, Fergus A. | Monograph or Collective Volume | Irish Province of Carmelites | 2018 |
| Raising the Irish Militia | Fitzsimons, Fiona | Article in Journal | | 2022 |
| Raphoe Diocesan Archives | Hughes, Moira | Article in Journal | | 2017 |
| Rath Church of the Sacred Heart. Foundation stone of the Church of the Sacred Heart, Rath, laid in 1877 | Walsh, Jack | Article in Journal | | 2010 |
| Rathcoole : 1799 parish priest transported to Australia | Moloney, Maeve Mulryan | Article in Journal | | 1999 |
| Rathnew Corpus Christi procession diary 1945-54|Rathnew Corpus Christi procession diary 1956-64 | O'Reilly, Stan J. | Article in Journal | | 2006 |
| Re-organisation of the dioceses of Kilfenora, Kilmacduagh, Galway and Killaloe, 1852-1883 | Murphy, Ignatius | Article in Journal | | 1984 |
| Réamann Ó Gallachair, bishop of Derry | Bonner, Brian | Article in Journal | | 1974 |
| Réamonn Ó Gallachair, bishop of Derry | Bonner, Brian | Article in Journal | | 1974 |
| Reapers of the harvest : the Redemptorists in Great Britain and Ireland 1843-1898 | Sharp, John | Monograph or Collective Volume | Veritas | 1989 |
| Reassessing Paul Cullen : an afterword | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2011 |
| Rebel, priest and prophet : a biography of Dr. Edward McGlynn | Bell, Stephen | Monograph or Collective Volume | Hyperion | 1975 |
| Rebellious Devotion
Catholicism and the Limits of Modernism | Cronin, Michael G. | Article in Book | | 2019 |
| Rebels and confederates : the stance of the Irish clergy in the 1640s | Ó hAnnracháin, Tadhg | Article in Book | | 1997 |
| Recalling the past | Power, William | Article in Journal | | 2001 |
| Recent developments in Catholicism : A survey of Catholicism in modern Ireland | Singleton, Steven | Article in Journal | | 2003 |
| Reclaiming the Irish Church | Dooley, Mark | Article in Journal | | 2015 |
| Recollections of a writer by accident | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 2002 |
| Recollections of an Irish Poor Clare in the seventeenth century : Mother Mary Bonaventure, third abbess of Galway, 1647-1650 | Browne, Mary BonaventureO'Brien, Celsus | Monograph or Collective Volume | Poor Clares | 1993 |
| Recollections of the Famine | O'Brien, Pat | Article in Journal | | 2005 |
| Reconstructing Catholic family history | O'Toole, James M. | Article in Journal | | 1990 |
| Reconstruction de l'Église catholique en République d'Irlande | Vandewoude, Déborah | Article in Journal | | 2014 |
| Records of the Irish College, Rome, under Jesuit administration | | Article in Journal | | 1964 |
| Rectors of the Irish College of Salamanca, 1705-67 | Finegan, Francis | Article in Journal | | 1968 |
| Recusancy and counter-reformation | Lennon, Colm | Article in Book | | 2006 |
| Recusancy and the Dublin Stanyhursts | Lennon, Colm | Article in Journal | | 1975 |
| Rededication of St Mary’s Church, Mullaghbawn 4th April, 1982 | Ó Fiaich, Tomás | Article in Journal | | 1990 |
| Reflections of a Newry-born priest who was secretary to three pontiffs | Magee, John | Article in Journal | | 1989 |
| Reflections on a quiet rebel | McCrystal, Cal | Monograph or Collective Volume | Michael Joseph | 1997 |
| Reform and reaction in sixteenth-century Ulster | Morgan, Hiram | Article in Book | | 1994 |
| Reform, instruction, and practice: the impact of the Catholic Revival on the laity in the Dublin diocese, 1793-1853 | O'Driscoll, Katherine | Thesis | | 2016 |
| Reform, renewal and vindication : Irish immigrants and the Catholic total abstinance movement in antebellum Philadelphia | Jeffrey, Edith | Article in Journal | | 1988 |
| Reform, Revolution and Reaction: Archbishop John Thomas Troy and the Catholic Church in Ireland 1787-1817 | McNally, Vincent J. | Monograph or Collective Volume | University Press of America | 1995 |
| Reform, revolution, and reaction : Archbishop John Thomas Troy and the Catholic Church in Ireland, 1787-1817 | McNally, Vincent J. | Monograph or Collective Volume | University Press of America | 1995 |
| Reforma Católica en Irlanda | Aldea Vaquero, Quintín | Article in Book | | 2002 |
| Reformation in Britain and Ireland | Heal, Felicity | Monograph or Collective Volume | Oxford University Press | 2003 |
| Reformation in Elizabethan Waterford | Byrne, Niall | Article in Journal | | 2001 |
| Reforming education in post-partition Northern Ireland : state control and churches’ interference | Biaggi, Cecilia | Article in Journal | | 2020 |
| Reforming Irish manners : the religious societies in Dublin during the 1690s | Barnard, T. C. (Toby Christopher) | Article in Journal | | 1992 |
| Regionalism and localism : religious change and social protest, c.1700-c.1900 | Proudfoot, Lindsay J. | Article in Book | | 1993 |
| Regions and religions in Ireland | Anderson, J. | Article in Journal | | 1980 |
| Registers of a Midland parish, 1791-1810: Ballinahown, County Offaly and County Westmeath [with index] | | Article in Journal | | 2012 |
| Registration of Popish clergy, 1703 : incident in Howth, 1710 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1950 |
| Relación de los puntos principales de la grave persecución que los Catholicos de Reyno de Irlanda padecen de los Hereges forasteros | Anonymous | Monograph or Collective Volume | [s.n.] | #|- |
| Relations between the French, Irish and Scottish clergy in the maritime provinces, 1774-1836 | Wade, Mason | Article in Journal | | 1972 |
| Relics and the past : the material culture of Catholic martyrdom in Ireland | Tait, Clodagh | Article in Book | | 2009 |
| Religion and history | Devine, Thomas Martin | Article in Journal | | 1983 |
| Religion and identity - the Irish dillema | O'Connor, Thomas | Article in Journal | | 1999 |
| Religion and identity : the church and Irish independence | O'Callaghan, Margaret | Article in Journal | | 1983 |
| Religion and land tenure in eighteenth-century Ireland : tenancy in the south-east | Gahan, Daniel | Article in Book | | 1990 |
| Religion and money : Irish regular colleges in the Roman Republic of 1798-99 | Harvey, Karen J. | Article in Journal | | 1993 |
| Religion and politics at the turn of the millennium | FitzGerald, Garret | Article in Book | | 2003 |
| Religion and politics in a provincial town : Belfast, 1660-1720 | Gillespie, Raymond | Article in Book | | 2016 |
| Religion and secular thought 1850-75 | Brooke, Peter | Article in Book | | 1983 |
| Religion and sexual culture in Ireland | Fahey, Tony | Article in Book | | 1999 |
| Religion and social inequality in Ireland | Cohen, Marilyn | Article in Journal | | 1994 |
| Religion and society in nineteenth-century Ireland | Connolly, Sean J. | Monograph or Collective Volume | Dundalgan Press | 1985 |
| Religion and society, 1600-1914 | Connolly, Sean J. | Article in Book | | 2013 |
| Religion and state in seventeenth-century Ireland | Ryan, C. | Article in Journal | | 1975 |
| Religion and the Constitution of the Irish Free State | Mohr, Thomas | Article in Book | | 2021 |
| Religion and the Irish cinema | Brereton, Pat | Article in Journal | | 2008 |
| Religion and the Irish migrant | Kells, Mary | Article in Journal | | 1994 |
| Religion and the nationalist cause in the thought of Patrick Pearse | Marsden, John | Article in Journal | | 1995 |
| Religion and the Northern Ireland problem | Hickey, John | Monograph or Collective Volume | Gill & Macmillan | 1984 |
| Religion and the rise of mass immigration : the Irish community in New York City, 1815 to 1840 | Kenny, Kevin, 1960- | Article in Journal | | 1990 |
| Religion community relations and constructive unionism : the Arklow disturbances of 1890-92 | Doherty, Martin | Article in Book | | 2005 |
| Religion in America | Sperry, Willard Learoyd | Monograph or Collective Volume | University P. | 1945 |
| Religion in Ireland | Connolly, Sean J. | Article in Book | | 2002 |
| Religion in Ireland : the empirical situation | Steven, David | Article in Book | | 2004 |
| Religion in modern Ireland | Gilley, Sheridan | Article in Journal | | 1992 |
| Religion in Victorian Britain, 1 : traditions; 2 : controversies; 3 : sources; 4 : interpretations. 4 vols. | | Monograph or Collective Volume | | 1988 |
| Religion, class and identity : the state, the Catholic Church and the education of the Irish in Britain | Hickman, Mary J. | Monograph or Collective Volume | Avebury | 1995 |
| Religion, culture and values : a cross-cultural analysis of motivational factors in Native Irish and American Irish Catholicism | Biever, Bruce Francis | Monograph or Collective Volume | Arno Press | 1976 |
| Religion, ethnicity and colonialism as explanations of the Northern Ireland conflict | Clayton, Pamela | Article in Book | | 1998 |
| Religion, ethnicity and “conversion” in the 1641 Irish rebellion | Redmond, Joan | Article in Journal | | 2020 |
| Religion, identity, state and society | Inglis, Tom | Article in Book | | 2005 |
| Religion, Ireland : in mutation | O'Leary, Joseph S. | Article in Book | | 1988 |
| Religion, Politics and Socio-Cultural Change in Twentieth-Century Ireland | Fuller, Louise | Article in Journal | | 2005 |
| Religion, politics and the Irish rising of 1641 | Canny, Nicholas P. | Article in Book | | 1997 |
| Religion, Protestants and national identity : a response to the March 2009 issue | Dingley, James | Article in Journal | | 2013 |
| Religion, radicalism and rebellion in nineteenth-century Ireland : the case of Thaddeus O'Malley | D'Arcy, Fergus A., 1943- | Article in Book | | 1997 |
| Religion, truth, national identity and social meaning : the example of Northern Ireland | Dingley, James | Article in Journal | | 2009 |
| Religious affiliation and the immigrant experience : Catholic Irish and Protestant highlanders in Glasgow, 1830-1850 | Sloan, William | Article in Book | | 1991 |
| Religious affinity and class difference in two-famine poems from Young Ireland | Parr, Katherine | Article in Book | | 2005 |
| Religious ambivalence in May Laffan's Hogan, M.P. | Hampton, Jill Brady | Article in Book | | 2005 |
| Religious cleavage and aspects of Catholic identity in modern Scotland | Bradley, Joseph M. | Article in Journal | | 1995 |
| Religious conflict in Ulster, c. 1780-1886 | Holmes, Andrew R., 1977- | Article in Book | | 2013 |
| Religious discrimination in Scotland : A rebuttal of Bruce et al.'s claim that sectarianism is a myth | Walls, PatriciaWilliams, Rory | Article in Journal | | 2005 |
| Religious discrimination in Scotland : Fact or myth? | Bruce, SteveGlendinning, TonyPaterson, Iain R.Rosie, Michael | Article in Journal | | 2005 |
| Religious Formation of the Laity at the Catholic University of Ireland | Rupert, Jane | Article in Journal | | 2006 |
| Religious history | Miller, David William, 1940- | Article in Book | | 2005 |
| Religious Houses: Devotional Lives | Sterritt, Laurence Lux | Article in Book | Oxford University Press | 2023 |
| Religious Houses: Spirituality | Walker, Claire | Article in Book | Oxford University Press | 2023 |
| Religious intolerance under home rule : some opinions of leading Irish Protestants | MacSwiney, Terence | Monograph or Collective Volume | [s.n.] | 1911 |
| Religious legacies | O'Doherty, Malachi | Article in Book | | 2004 |
| Religious observation in everyday life | MacMahon, Bryan | Article in Book | | 2012 |
| Religious orders and congregations in Great Britain and Ireland | Anson, Peter Frederick, 1889-1975 | Monograph or Collective Volume | Abbey Press | 1950 |
| Religious persecution in the Diocese of Ferns. 1558-1625 | O Suilleabhain, D. B. | Article in Journal | | 1948 |
| Religious persecution in the seventeenth century : the Friars of Kilkeedy | Ó Dálaigh, Brian | Article in Journal | | 2007 |
| Religious polarization and sectarianism in the Ulster rebellion | Elliott, Marianne | Article in Book | | 2003 |
| Religious renewal and reform in the pastoral ministry of Bishop James Doyle of Kildare and Leighlin | McGrath, Thomas | Monograph or Collective Volume | Four Courts | 1998 |
| Religious renewal and reform in the pastoral ministry of James Doyle, O.S.A., bishop of Kildare and Leighlin, 1819-1834 | McGrath, Thomas G. | Thesis | | 1987 |
| Religious residential segregation in urban County Derry 1831-1991 : a study of variation in space and time | Poole, Michael A. | Article in Book | | 1999 |
| Religious revival and popular evangelicalism in Britain and Ireland, 1859-1905 | Holmes, Janice | Thesis | | 1995 |
| Religious rivalry and the making of Irish-American identity | Whelan, Irene | Article in Book | | 2006 |
| Religious tensions in National Schools 1830-1861 | Hoban, James | Article in Journal | | 1998 |
| Religious toleration and the relaxation of the penal laws : an imperial perspective, 1763-1780 | Hill, Jacqueline R. | Article in Journal | | 1989 |
| Religious violence against settlers in south Ulster, 1641-2 | Mac Cuarta, Brian | Article in Book | | 2007 |
| Religious wars in Ireland : plantations and martyrs of the Catholic church | Lennon, Colm | Article in Book | | 2002 |
| Relinquishing educational dominance : the Catholic church and Irish secondary schools, 1829-1989 | Stack, Annetta | Article in Journal | | 2000 |
| Relocation of Elmbank Cemetery, Toronto, Canada, 2004 | Barber, Doreen née O'Donnell | Article in Journal | | 2006 |
| Reluctant Britons : the Toronto Irish, Home Rule, and the Great War | Currie, Philip | Article in Journal | | 1995 |
| Remembering Canon McGarry | Ryan, ThomasStuart, Imogen | Article in Journal | | 1980 |
| Remembering the 1605 gunpowder plot in Ireland, 1605–1920 | McConnel, James | Article in Journal | | 2011 |
| Remonstrantia Hibernorum contra Louvanienses, 1665 | Caron, Redmond
| Monograph or Collective Volume | Gregg | 1970 |
| Removete Lapidem! ('Remove the stone!') | Ó Hannracháin, Tadhg | Article in Book | | 2013 |
| Rendering to God and Caesar : the Irish churches and the two states in Ireland | Ó Cornáin, Dáithí | Thesis | | 2004 |
| Renovation of St. Malachy's Church, Armagh, 2004-2005 | Murphy, Pádraig | Article in Book | | 2013 |
| Repeal and the Roman Catholic clergy in county Meath 1840-1845 | Connell, Paul | Article in Journal | | 1984 |
| Repeal, popular politics, and the Catholic clergy of Cork, 1840-50 | Cronin, Maura (née Murphy) | Article in Journal | | 1977 |
| Repealing the Penal Laws, 1760-95 | Kelly, James, 1959- | Article in Book | | 2021 |
| Report of Bishop McDonagh, 1741 | McDonagh, Michael | Article in Journal | | 1965 |
| Report on the archives of the Sisters of Our Lady of Charity and Refuge | Perry, Victoria | Article in Journal | | 2007 |
| Representations of madness in Irish society in the Drama of Brian Friel | Kennedy, Michelle | Article in Journal | | 2012 |
| Representations of the Irish Church Missions in mid-neneteenth century Kilkenny city: image and text | Cherry, Jonathan | Article in Journal | | 2018 |
| Republic of shame : stories from Ireland's institutions for 'fallen women' | Hogan, Caelainn | Monograph or Collective Volume | Penguin Ireland | 2019 |
| Republican dissent among Irish Jesuits during the Civil War, 1922-1923 | Frehill, Olivia | Article in Journal | | 2018 |
| Republican dissent among Irish Jesuits during the Civil War, 1922-23 | Frehill, Olive | Article in Journal | | 2018 |
| Republican religion and republican institutions : Alexander Campbell and the anti-Catholic movement | Hicks, Edward | Article in Journal | | 1990 |
| Republicanism in American Catholicism, 1785-1860 | Casey, Patrick | Article in Journal | | 1983 |
| Resistance and Respectability : Dilemmas of Irish Migrant Politics in Victorian Britain | Busteed, Mervyn A. | Article in Journal | | 2009 |
| Restoration | Williams, Mark R.F. | Article in Book | Oxford University Press | 2023 |
| Resurgence of Catholic orders in Limerick | Noonan, Emer | Article in Book | | 2000 |
| Rethinking Irish history : nationalism, identity and ideology | Campling, JoDelanty, GerardO'Mahony, Patrick | Monograph or Collective Volume | Macmillan | 1998 |
| Return of the repressed? "Haunted Castles" in seventeenth-century Munster | Tierney, Andrew | Article in Journal | | 2010 |
| Returning to core principles | McDermott, Yvonne | Article in Journal | | 2007 |
| Returning to its 'old form' : Roman Catholic church renewal and inter-church relations in South Tipperary, 1730-1840 | Butler, David J., 1976- | Article in Journal | | 2007 |
| Rev John Barry: champion of the poor | Ó Cathaoir, Brendan | Article in Journal | | 2012 |
| Rev. Daniel W. Cahil D. D., 1796-1864 | Smith, Peter | Article in Journal | | 1999 |
| Rev. Dr John Boyce ('Paul Peppergrass' 1810-1864) | McNamara, G. M. | Article in Journal | | 1965 |
| Rev. Dr. James O'Fallon, Bishop of Elphin 1756-1786 | Gacquin, William | Article in Journal | | 1996 |
| Rev. Edmund Hogan, S.J. | Hogan, William | Article in Journal | | 1965 |
| Rev. Fr. Patrick O'Kelly | Irwin, Alice | Article in Journal | | 2003 |
| Rev. James O'Coigley, United Irishman | Simms, Samuel | Article in Journal | | 1937 |
| Rev. John Smyth C.C. (1791-1858) | Kingston, John | Article in Journal | | 1971 |
| Rev. Louis O'Kane (1905-1973) and his revolutionary recordings of Irish Volunteers : Aspects of south and east Tyrone on tape | McAnallen, Dónal | Article in Journal | | 2016 |
| Rev. Professor T. A. Finlay, S. J. | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Rev. Thomas MacNamara | Kelly, Joseph P. | Article in Journal | | 1974 |
| Reverend James Parle (1811-1870) | De Vál, Seamus S. | Article in Journal | | 1995 |
| Reverend Robert Winning and the Second Reformation in the Kingscourt district: the Irish Society's Bible schools | Rogan, Marion | Article in Journal | | 2023 |
| Review article : Protestants, planters and apartheid in early modern Ireland | Canny, Nicholas P. | Article in Journal | | 1986 |
| Review article. Ireland's difficulty, the noverlist's opportunity | Ryder, Sean | Article in Journal | | 2008 |
| Review article. Religion, war and identity in Ireland | Townshend, Charles | Article in Journal | | 2003 |
| Review article: Canada's sectarian past | Fitzpatrick, David | Article in Journal | | 2018 |
| Review Essay. Letter from Glasgow. Where the streets have no shame | Maley, Willy | Article in Journal | | 2006 |
| Review of Kavanagh S. J. and White, N. B., 'Commentarius Rinuccinianus, Vol. 6, | Brady, John, d.1963 | Article in Journal | | 1951 |
| Review of Mooney (C.), 'Boethius Mac Egan of Ross' 1950 | Grosjean, Paul | Article in Journal | | 1951 |
| Review of Southern (A.C.), 'Elizabethan recusant prose' 1950 | Allison, A. F.Rogers, D. M. | Article in Journal | | 1951 |
| Review: Ethnic Souls: Early Modern Catholicism in Ireland, Britain, and Spain | McCabe, Richard A. | Article in Journal | | 2010 |
| Revisionism or reality? Daniel Mannix in ADB 10 | Griffin, James | Article in Book | | 1996 |
| Revival of re-invention : Columban traditions in nineteenth-century Derry | Lacey, Brian | Article in Journal | | 2004 |
| Revolution and Catholicism in Ireland, 1848-1922 | Newsinger, John | Article in Journal | | 1979 |
| Revolution of silence: the case of Jenico Preston, 15th Viscount Gormanston (1879-1925) | McMahon, Timothy G.
| Article in Journal | | 2014 |
| Revolutionary and Refractory?
The Irish Colleges in Paris and the French Revolution | Chambers, Liam | Article in Journal | | 2008 |
| Ribbonism in Tyholland Parish (1820-1840) | Gilmore, Brian | Article in Journal | | 2015 |
| Ribbonism or agrarian troubles in south Armagh | Murphy, Kevin | Article in Journal | | 1974 |
| Richard Arthur, bishop of Limerick | Moloney, Michael | Article in Book | | 1951 |
| Richard Baptist O'Brien, dean of Limerick (1809-1885) | Manley, Edward Joseph | Thesis | | 1991 |
| Richard Brady OFM, bishop of Kilmore, 1580-1607 | Fennessy, Ignatius | Article in Journal | | 2000 |
| Richard Canon Aylward | Walton, Julian | Article in Journal | | 1978 |
| Richard Colley Wellesley : an Anglo-Irish advocate of Catholic emancipation | Demichele, M. D. | Article in Journal | | 1970 |
| Richard Stanihurst (1547-1618) and Old English identity | Lennon, Colm | Article in Journal | | 1978 |
| Richard Stanihurst (1547-1618): Dublin's earliest historian | Lennon, Colm | Article in Journal | | 2020 |
| Richard Stanihurst the Dubliner 1547-1618 : a biography with a Stanihurst text on Ireland's past | Lennon, Colm | Monograph or Collective Volume | Irish Academic Press | 1981 |
| Richard Stanihurst's "Spanish Catholicism" : ideology and diplomacy | Lennon, Colm | Article in Book | | 2002 |
| Richard Talbot, earl of Tyrconnell (1630-91) and the Catholic counter-revolution | McGuire, James | Article in Book | | 1989 |
| Right Reverend John Barry second bishop of Savannah | Rezek, Patricia J. | Article in Journal | | 1990 |
| Rights, Revolutions, Republics, 1750-1850 : the work and works of William Sampson (1764-1836) : a chronology | Walsh, Walter J. | Article in Journal | | 2014 |
| Rinuccini and civil war in Ireland, 1644-49 | Boyd, Andrew, 1921- | Article in Journal | | 1991 |
| Rinuccini in Galway, 1647-49 | O'Riordan, Seán | Article in Journal | | 1948 |
| Rinuccini's censure of 27 May 1648 | Corish, Patrick J. | Article in Journal | | 1951 |
| Riots, rescues and 'grene bowes' : Catholics and protest in Ireland, 1570-1640 | Tait, Clodagh | Article in Book | | 2013 |
| RMS Titanic - Dungiven connection | Hasson, Seamus | Article in Journal | | 2012 |
| Robe and sword in the conquest of Ireland | Bradshaw, Brendan | Article in Book | | 1988 |
| Robert Walsh : his story | Lochemes, M. Frederick | Monograph or Collective Volume | American Irish Historical Society | 1941 |
| Roman Catholic church architecture in Great Britain and Ireland, 1829-1878 | O’Donnell, R. M. | Thesis | | |
| Roman Catholic dispensation records and genealogy in Brooklyn in the nineteenth century | Silinonte, Joseph M. | Article in Journal | | 1998 |
| Roman Catholic nuns in England and Wales, 1800-1937 : a social history | Walsh, Barbara, 1932- | Monograph or Collective Volume | Irish Academic Press | 2002 |
| Roman Catholicism and the Irish in England | Gilley, Sheridan | Article in Journal | | 1999 |
| Roman Catholicism and the Irish in England | Gilley, Sheridan | Article in Book | | 2000 |
| Roman Catholics in Scotland in the 19th and 20th centuries | McCaffrey, John F. | Article in Journal | | 1983 |
| Rome and Irish Catholicism in the Atlantic World, 1622–1908 | NA | Monograph or Collective Volume | Palgrave Macmillan | 2019 |
| Rome and the British veto, 1829-47 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1951 |
| Rome and the Irish Catholic community in the Eighteenth Century, 1691–1789 | Chambers, Liam | Article in Book | | 2019 |
| Rome as part of the Irish North Atlantic experience, 1770–1830 | Codignola, Luca | Article in Book | | 2019 |
| Rome rule : a paper read at a meeting of the Young Ireland branch, U.I.L., 1911 | Little, Patrick J. | Monograph or Collective Volume | Gill | 1913 |
| Room 254 and Fr. John Walsh of Bandon (d. 1964) | Shortall, John | Article in Journal | | 2007 |
| Roots of conflict in Ireland | Berlatsky, Joel | Article in Journal | | 1983 |
| Roots of sectarianism in Ireland : chronology and reflections | Liechty, Joseph | Monograph or Collective Volume | Dr. Joseph Liechty | 1993 |
| Rosa Mulholland, W.P. Ryan and Irish Catholic fiction at the time of the Anglo-Irish revival | Murphy, James H. | Article in Book | | 1995 |
| Roscrea : a history of the Catholic parish of Roscrea from the earliest times to the present day, with some account of the territories of Uí Ciarin and Éile Uí Cearbhaill | Gleeson, Dermot F. | Monograph or Collective Volume | Three Candles | 1947 |
| Rosscarbery and its origins: [Part one]|Rosscarbery and its origins: Part two|Rosscarbery and its origins: Part three | O'Mahony, Michael | Article in Journal | | 2010 |
| Rosscarbery woman lives mission dream | McCarthy, Mary Hayes | Article in Journal | | 2000 |
| Roundtable discussion : the history of British and Irish Catholicism : past, present and future | | Article in Journal | | 2022 |
| Royalists at war in Scotland and Ireland, 1638-1650 | Robertson, Barry | Monograph or Collective Volume | Ashgate | 2014 |
| Rule Etonia : educating the Irish Catholic elite 1850-1900 | O'Neill, Ciaran | Thesis | | |
| Rules and regulations for the Catholic school in Monaghan | Mulligan, Patrick | Article in Journal | | 1978 |
| Rum, romanism, and evangelism : Protestants and Catholics in late-nineteenth-century Boston | Bendroth, M. | Article in Journal | | 1999 |
| Running a stained glass studio in Youghal from 1894 to 1901: the early years of James Watson and company | Ryan, Vera | Article in Journal | | 2021 |
| Rural Catholic mobilisation in Ireland, 1850-1922 | O'Day, Alan | Article in Book | | 1993 |
| Rural deanery of Creggan, 1798 | Ó Muiri, Réamonn | Article in Journal | | 1989 |
| Sacred Heart Church, Borrisoleigh, 1893-1993 | Anonymous | Monograph or Collective Volume | # | 1993 |
| Sacred places and pilgrimage in the Archdiocese of Dublin | Liston, Bríd | Monograph or Collective Volume | Veritas | 2000 |
| Safeguarding Irish girls : welfare work, female emigrants and the Catholic Church | Redmond, Jennifer | Article in Book | | 2015 |
| Sagart gan iomrá; an tAthair Séamus Ó hEargáin | Ua Cnáimhsí, Pádraig | Article in Journal | | 1996 |
| Sailing from The Lowlands low | Tonra, Henry | Article in Journal | | 1994 |
| Saint de la Salle and the education of Irish youth | Battersby, W. J. | Article in Journal | | 1950 |
| Saint Eunan's Cathedral, Letterkenny, Co. Donegal | Harrison, Graham | Monograph or Collective Volume | Eason | 1988 |
| Saint Fachtna | Maguire, George | Article in Journal | | 2011 |
| Saint in overalls : the lesson of Matt Talbot | Duff, Edward | Article in Journal | | 1940 |
| Saint James and Father Tom : a saint and his priest | | Monograph or Collective Volume | Fr. Tom Lawlor Memorial Committee | 2004 |
| Saint Joseph's Mullaghard, Tynan (1813-2018) : a millennium church history | Brady, Patrick J. | Monograph or Collective Volume | Middletown & Tynan Historical Society | 2018 |
| Saint Mary's Church | Copps, J. | Article in Journal | | 1988 |
| Saint Mary's Church Aughnacloy | Cullinane, Joseph B. | Article in Journal | | 1994 |
| Saint Mary's Pro-Cathedral, Dublin | McCarthy, Dermot | Monograph or Collective Volume | Eason | 1988 |
| Saint Oliver Plunkett | Meagher, John | Monograph or Collective Volume | Irish Messenger Publications | 1977 |
| Saint Oliver Plunkett : journey to sainthood | Burns, Tommy | Monograph or Collective Volume | The author | 2014 |
| Saint Oliver Plunkett and Downside | Murphy, Martin | Monograph or Collective Volume | Downside Abbey | 1975 |
| Saint Patrick's Purgatory, Lough Derg | McGuinness, Joseph | Monograph or Collective Volume | Columba | 2000 |
| Saint Patrick, Animal Gangs and Blueshirts: Anto-communism in 1930s Dublin | Fallon, Donal | Article in Journal | | 2014 |
| Saints and Devotional Cultures | Heimann, Mary : Delay, Cara | Article in Book | Oxford University Press | 2023 |
| Saints' cults and the early Irish church | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2007 |
| Saints, shamrocks and signifying practices: Aer Lingus and the materialization of Irish identity | KIng, Linda | Article in Journal | | 2011 |
| Salamanca letters : a catalogue of the Irish college of Salamanca correspondence between 1619-1870, in the library of Maynooth college, Ireland | Anonymous | Monograph or Collective Volume | St Patrick's College | 1994 |
| Salutatio-Omós. A tribute for Very Rev. Canon Edward J. Whyte, retired P.P. Cloughjordan, on the occasion of his golden jubilee | Murphy, Donal A. | Article in Journal | | 1996 |
| San Patricio y los irlandeses : el descubrimiento de una escultura | Hernández García, José Javier | Article in Journal | | 2007 |
| Sancti Isidori Visitatio Apostolica (1663). I Frati Minori irlandesi a Roma dopo Luke Wadding | Bellardini, DonatellaCostacurta, Claudia | Article in Journal | | 2015 |
| Sanguinea eremus martyrum Hiberniae ord. eremit. S.P. Augustini (1655). | O'Mahony, James, d.1666 | Article in Journal | | 1950 |
| Sarsfield : the man and the myth | Irwin, Liam | Article in Book | | 1995 |
| Sarsfield's defence of the Shannon 1690-91 | Mangan, Henry | Article in Journal | | 1949 |
| Saving the Pope: Tipperary's contribution to the "Irish Brugade" in 1860. Part One, Part Two | Marnane, Denis G. | Article in Journal | | 2010 |
| Schools and conflict | Murray, Dominic | Article in Book | | 1983 |
| Schools in Co. Kildare | de Bháldraithe, Eóin | Article in Journal | | 2015 |
| Scoileanna na mBráithre Críostaí : tradisiún mar aon le hathruithe | Ó Muirí, Micheál | Article in Book | | 1996 |
| Scotland : the famine and the development of the church in Scotland | Handley, J. E. | Article in Journal | | 1947 |
| Scotland in the antiquarian collection of the library of the Irish college in Paris | Caillet, Maurice | Article in Journal | | 1992 |
| Scotland, Ireland, and the antithesis of Enlightenment | O'Brien, Gerard | Article in Book | | 1995 |
| Scots and Irish clergy ministering to immigrants 1830-1878 | Aspinwall, Bernard | Article in Journal | | 1996 |
| Scots Catholics in Ulster, 1603-41 | Mac Cuarta, Brian | Article in Book | | 2016 |
| Scottish Catholic ancestors | Adolph, Anthony | Article in Journal | | 2009 |
| Scottish Catholicism 1560-2005 | Halloran, Brian M. | Article in Book | | 2005 |
| Scoundrels all -- priests and prelates in '98 | Keogh, Dáire | Article in Book | | 1998 |
| Scríbhinní Gaeilge na mBráthar Mionúr | Ó Cuív, Brian | Article in Book | | 1995 |
| Scripture politics : Ulster Presbyterians and Irish radicalism in the late eighteenth century | McBride, Ian | Monograph or Collective Volume | Clarendon Press | 1998 |
| Scripture reading among Irish Catholics in the nineteenth century | Moffitt, Miriam | Article in Book | | 2013 |
| Séamas Óg Mac Coitir agus an dlí Gallda | Ó Muirí, Damien | Article in Book | | 2012 |
| Séamas Óg Mac Coitir agus an dlí Gallda | Ó Muirí, Damien | Article in Book | | 2012 |
| Séamus Mhac Cúarta do chum an duan so don Easbog Ó Siadha[i] l | | Article in Journal | | 1939 |
| Séamus Ó Gallchobhair, easpag Ráth Bhoth, 1725-1737 | Ó hÉigeartaigh, Séamus P. | Article in Journal | | 1961 |
| Seán agus Tadhg Ó Neachtain: cleamhnas agus gaol | Ó Háinle, Cathal | Article in Journal | | 2005 |
| Seán Mac hÉil agus bochtaineacht an Iarthair | Ó Néill, Tadhg P. | Article in Book | | 1983 |
| Seán Mac hÉil, ardeaspag agus conspóidí : athbhreithniú | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1983 |
| Seán Mac Mathúna: Diarist and dedicated recorder of Clare tradition | Ó Héalaí, Pádraig | Article in Journal | | 2016 |
| Seán Ó Riada's Requiem do shaighdiúir | O'Keefe, John | Article in Book | | 2018 |
| Seanchas : Part two, an eminent Victorian : Alexander McCarthy 1803-1868 | MacCarthy, C. J. F. | Article in Journal | | 1990 |
| Seanmoireacht Ghaeilge san ochtu agus na naou haois deag | Ó Fiannachta, Pádraig | Article in Journal | | 1983 |
| Secondary education | Ó Súillebháin, S. V. | Article in Book | | 1971 |
| Secondary education | Ó Súilleabháin, Séamus | Article in Book | | 1968 |
| Secondary education in Ireland : 1870-1921 | McElligott, T. J. | Monograph or Collective Volume | Irish Academic Press | 1981 |
| Secret service of a past age : a captured Gaelic document | Lennon, Michael J. | Article in Journal | | 1948 |
| Sectarian conflict 1972-77 | Aughey, Arthur | Article in Book | | 1985 |
| Sectarian conflict in Monaghan | Micheau, Edward | Article in Book | | 1990 |
| Sectarian readings of sectarianism : interpreting the Northern Ireland census | Anderson, JamesShuttleworth, Ian | Article in Journal | | 1994 |
| Sectarian tensions in Scotland : social and cultural dynamics and the politics of perception | Walker, Graham | Article in Book | | 2000 |
| Sectarian violence : the Liverpool experience, 1819-1914 : an aspect of Anglo-Irish history | Neal, Frank | Monograph or Collective Volume | Manchester University Press | 1988 |
| Sectarianism : an optimistic prognosis | Heskin, Ken | Article in Journal | | 1989 |
| Sectarianism : division and dissent in Irish Catholicism | Jackson, Brian | Article in Book | | 2005 |
| Sectarianism and politics in modern Ireland | English, Richard, 1963- | Article in Book | | 2004 |
| Sectarianism and racism, and their parallels and differences | Brewer, John D. | Article in Journal | | 1992 |
| Sectarianism and the churches : the legacy and the challenge | Liechty, Joseph | Article in Book | | 1999 |
| Sectarianism at work : Accounts of employment discrimination against Irish Catholics in Scotland | Walls, PatriciaWilliams, Rory | Article in Journal | | 2003 |
| Sectarianism in 1798 and in Catholic nationalist memory | Donnelly, James S., Jr | Article in Book | | 2001 |
| Sectarianism in Marsh's Ireland : some literary evidence | Carpenter, Andrew | Article in Book | | 2004 |
| Sectarianism in the rebellion of 1798 : the eighteenth-century context | Keogh, Dáire | Article in Book | | 1996 |
| Sectarianism in the workplace : the case of the Derry shirt industry 1868-1968 | Finlay, Andrew | Article in Journal | | 1993 |
| Sectarianism spills over? The St Johnston riot of 1972 | Hanley, Brian | Article in Journal | | 2016 |
| Sectarianism, respectability and cultural identity: the St Patrick's Total Abstinence Society and Irish Catholic temperence in mid nineteenth century Sydney. | Allen, Matthew | Article in Journal | | 2011 |
| Sectarianism, segregation and politics on Clydeside in the later nineteenth century | Foster, JohnHouston, MuirMadigan, Chris | Article in Book | | 2008 |
| Secular Franciscans down the ages | Conlon, Patrick | Monograph or Collective Volume | Secular Franciscans | 1979 |
| Secular players : Catholic imagination, modern Irish writing and the case of John McGahern | Shovlin, Frank | Article in Book | | 2013 |
| Securing the Protestant interest : the origins and purpose of the penal laws of 1695 | McGrath, Charles Ivar | Article in Journal | | 1996 |
| Securing the Protestant interest: policy , politics and Ireland in the aftermath of the Glorious Revolution, 1690-1695 | McGrath, Charles Ivar | Thesis | | 1992 |
| Segregated schools : the research evidence | Darby, JohnDunn, Seamus | Article in Book | | 1987 |
| Segregation or integration? The residential experience of the Irish in mid-Victorian Britain | Pooley, Colin G. | Article in Book | | 1989 |
| Select bibliography relating to Armagh diocesan history | Anonymous | Article in Journal | | 1989 |
| Select bibliography relating to Armagh diocesan history | Anonymous | Article in Journal | | 1989 |
| Select bibliography relating to Armagh diocesan history | Canning, Joseph | Article in Journal | | 1988 |
| Select document: Catholic ownership of tithes: a County Wexford widow's dispensation, 1595 | Mac Cuarta, Brian | Article in Journal | | 2018 |
| Select documents XXII. Gladstone, Queen Victoria, and the disestablishment of the Irish Church, 1868-9 | NA | Article in Journal | | 1962 |
| Select documents XXXVIII. Defenders and Defenderism in 1795 | | Article in Journal | | 1985 |
| Select documents. Ormond's civic entry to Kilkenny, 29/31 August 1646 | | Article in Journal | | 2007 |
| Sellerna : a Connemara mission | Gageby, Patrick | Article in Journal | | 1993 |
| Selling royal favours, 1624-32 | Clarke, Aidan | Article in Book | | 1976 |
| Seraphic sparks : The Irish Franciscan and Capuchin Colleges on the Continent | Mac Craith, Mícheál | Article in Book | | 2018 |
| Sermon at Sean's Requiem Mass | Smith, Sean | Article in Journal | | 2002 |
| Services for 1950s Irish emigrants - Battleground for church, state and communism | Harvey, Brian | Article in Journal | | 2022 |
| Serving king and country : Armagh barracks, 1901 | McVeigh, Mary | Article in Journal | | 2004 |
| Serving the spiritual needs of the Irish diaspora in nineteenth-century America | Sullivan, Tom | Article in Journal | | 2008 |
| Setting the agenda for the press: The 1929 case against the Waterford Standard | Keating, Anthony | Article in Journal | | 2012 |
| Settlement conflict and community: Irish Protestant migrants on New Zealand's Pakeha Frontier 1870-1900 | Horn, Gerard | Article in Journal | | 2010 |
| Seventeen martyrs | Forristal, Desmond | Monograph or Collective Volume | Columba | 1990 |
| Seventeenth-century interpretations of the past : the case of Geoffrey Keating | Cunningham, Bernadette | Article in Journal | | 1986 |
| Seventeenth-century Irish catechisms : European or not | O'Reilly, Mary | Article in Journal | | 1996 |
| Sewn by candlelight : the Act of Union and Borough Schools of Swords | Marks, Bernadette | Monograph or Collective Volume | Swords Historical Society | 1998 |
| Sex and socialism: the class politics of immorality in pre-First-World-War Ireland | Ó Drisceoill, Donal | Article in Journal | | 2015 |
| Sex and the single girl in 1920s and 1930s Ireland | Luddy, Maria | Article in Journal | | 2007 |
| Sexism, the church, Irish women | Kenneally, James J. | Article in Journal | | 1986 |
| Sexton's Graveyard Book | Power, John | Article in Journal | | 2017 |
| Sexual citizenship in Belfast, Northern Ireland | Kitchin, RobLysaght, Karen | Article in Journal | | 2004 |
| Shamrock and sword : the Saint Patrick Batallion in the U.S - Mexican War | Miller, Robert, fl. 1755 | Monograph or Collective Volume | University of Oklahoma Press | 1989 |
| Shaped by silence : stories from the inmates of the Good Shepherd laundries and reformatories | Croll, Rie | Monograph or Collective Volume | ISER Books | 2019 |
| Sharing the word : a history of the Bible Society in Ireland | Cooney, Dudley A. Levistone | Monograph or Collective Volume | Columba | 2006 |
| Sharman Crawford, O'Connell and the tithe question 1834-8 | Kennedy, Brian A. | Article in Journal | | 1941 |
| Shay Colm's footsteps trod | Canning, B. J. (Bernard J.) | Article in Journal | | 1993 |
| Short histories of Dublin parishes, 3 - 5 | Donnelly, Nicholas | Monograph or Collective Volume | Carraig Books | 1977 |
| Shrine at Arklow rock. Impressive ceremony at historic site | Anonymous | Article in Journal | | 1994 |
| Sidelights on souperism | O'Neill, Thomas Patrick | Article in Journal | | 1949 |
| Sidelights on the Irish church, 1811-38 | Ó Súilleabháin, Pádraig | Article in Journal | | 1966 |
| Sienna convent Drogheda : the Portuguese connection | Kirwan, James | Article in Journal | | 1992 |
| Silbheaster Ó Coinne | Ó Muireadhaigh, Lorcán, an tAth. | Article in Book | | 2013 |
| Silver jubilee of the official opening & solemn dedication of St Joseph's church, Ballyjamesduff, Co. Cavan | Anonymous | Monograph or Collective Volume | St Joseph's Church | 1991 |
| Silver jubilee of the official opening and solemn dedication : St Mary's Church Swanlinbar | Hannon, Donald | Monograph or Collective Volume | St. Mary's Church Area Pastoral Council | 2003 |
| Sint-Truiden : Irish Franciscan documents | | Article in Journal | | 1963 |
| Sir Charles Percy [1572-1628] | Nicholls, Mark | Article in Journal | | 1987 |
| Sir Cyril Wyche and the popish plot 1678-80 | Fenning, Hugh | Article in Journal | | 2003 |
| Sir Humphrey Gilbert and American colonization | Simmons, Richard C. | Article in Journal | | 1969 |
| Sir Nicholas O'Conor - a world figure | Evans, J.A. | Article in Journal | | 1994 |
| Sir Patrick Branigan 1906-2000. A Drogheda man in the dying days of Empire | Reilly, Liam | Article in Journal | | 2014 |
| Sister Genevieve | Rae, John | Monograph or Collective Volume | Little Brown | 2001 |
| Sister Ina O'Donovan | O'Donovan, Donal | Article in Journal | | 2011 |
| Sisters and the creation of American Catholic identities | Thompson, Margaret Susan | Article in Book | | 2016 |
| Sisters of secession : the unclaimed legacies of two Southern American Irish women | Giemza, Bryan | Article in Journal | | 2010 |
| Sisters of secession : the unclaimed legacies of two Southern American Irish women | Giemza, Bryan | Article in Journal | | 2010 |
| Sisters of St John of God in Australia, 1895-1965 | Brennan, Mary M. | Thesis | | 2003 |
| Sisters of the brotherhood : female Orangeism on Tyneside in the late nineteenth and early twentieth centuries | MacPherson, D. A. J.MacRaild, Donald M. | Article in Journal | | 2006 |
| Sketches of the Pope's Irish Brigade - from the portfolio of a sub-officer | O'Shea, John Augustus | Article in Journal | | 2009 |
| Skryne lady for canonization | Anonymous | Article in Journal | | 1991 |
| SMA missionaries of Northern Nigeria, 1907-1934 | O'Connor, Edward | Monograph or Collective Volume | SMA Fathers | 2007 |
| Small differences : Irish Catholics and Irish Protestants 1815-1922 : an international perspective | Akenson, Donald Harman | Monograph or Collective Volume | McGill-Queen's University Press | 1988 |
| Social activist | Kavanagh, James | Article in Journal | | 1998 |
| Social structures of the Irish church : a new source in papal penitentiary dispensations for illegitimacy | Haren, Michael J. | Article in Book | | 1994 |
| Socialism and Catholicism in Ireland | Larkin, Emmet | Article in Journal | | 1985 |
| Socialism and Catholicism in Ireland | Larkin, Emmet | Article in Journal | | 1964 |
| Society and economy, 1815-70 | Connolly, Seán J. | Article in Book | | 2011 |
| Society of St. Vincent de Paul : conference of St. Columba 1903-2003 | Gilmartin, BrianO'Brien, B. | Monograph or Collective Volume | Society of St. Vincent de Paul | 2003 |
| Sociology, religion and 'the troubles' in Northern Ireland | Fulton, John | Article in Journal | | 1988 |
| Some 19th century roots of the Ulster problem, 1829-48 | Cahill, G. A. | Article in Journal | | 1971 |
| Some afterthoughts on the Newman centenary celebrations | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1954 |
| Some aspects of Roman Catholic service in the land forces of the British Crown : c.1750 to c.1820 | Fontana, V. J. L. | Thesis | | |
| Some aspects of the Irish church in the eighteenth century | Brady, John, d.1963 | Article in Journal | | 1948 |
| Some aspects of the life of Doctor John Thomas Troy, O. P., 1739-1823 | Peel, H. E. | Article in Journal | | 1957 |
| Some aspects of the Reformation in Armagh province | Silke, John J. | Article in Journal | | 1984 |
| Some aspects of the response by the Roman Catholic church to the educational needs of the Irish poor in South London, 1840-70. | Winch, Francine | Thesis | | 1985 |
| Some aspects of the Siege of Derry | Faulkner, Anselm | Article in Journal | | 1988 |
| Some broadsides, chiefly from Cork, 1709-1821 | Fenning, Hugh | Article in Journal | | 1996 |
| Some Carpenter certificates in Madrid | McBride, Patrick P. | Article in Journal | | 1955 |
| Some Clogher clergy of the eighteenth century | Brady, John, d.1963 | Article in Journal | | 1957 |
| Some Connacht links with the 'Popish plot' | Brady, John, d.1963 | Article in Journal | | 1959 |
| Some county Cavan priests in Connecticut | O'Connell, Philip | Article in Journal | | 1965 |
| Some factors in the negotiations between Charles I and the confederation of Kilkenny | Lowe, John | Article in Journal | | 1961 |
| Some Ferns missionaries of bygone days | Gahan, John | Article in Book | | 1999 |
| Some Irish links with Sedan | Ó hAnnracháin, Eoghan | Article in Journal | | 2014 |
| Some Irish nuns in 18th century France | Barnwell, S. B. | Article in Journal | | 1991 |
| Some Irish prelates who lived or died in Belgium in the seventeenth century | Antheunis, Louis | Article in Journal | | 1955 |
| Some Irishmen in Belgium in past centuries | Antheunis, Louis | Article in Journal | | 1954 |
| Some Kilmore clergy of the 17th and 18th centuries | Brady, John, d.1963 | Article in Journal | | 1960 |
| Some letters from St John Henry Newman arising from his denunciation of Giacinto Achilli | Cunningham, John M. | Article in Journal | | 2020 |
| Some letters of Patrick Manogue, gold miner and bishop of Nevada and California | | Article in Journal | | 1960 |
| Some lists of Irish Franciscans in Prague 1656-1791 | Millett, Benignus | Article in Journal | | 1994 |
| Some lists of Kerry priests, 1750-1835 | De Brún, Pádraig | Article in Journal | | 1985 |
| Some medieval writings of the Irish Franciscans | Mooney, Canice | Article in Journal | | 1942 |
| Some members of the Confederation of Kilkenny | Cregan, Donal F. | Article in Book | | 1944 |
| Some MSS of Fr Thomas Lindlay Murray, P.P., Inniscara 1868-1891 | Whelton, Michael John | Article in Journal | | 2000 |
| Some nineteenth century roots of the Ulster problem, 1829-1848 | Cahill, G. A. | Article in Journal | | 1971 |
| Some noted priests of yesterday | Cassidy, James F. (James Francis), b. 1890 | Monograph or Collective Volume | Talbot Press | 1940 |
| Some notes and comments on 'The Irish Franciscan mission to Scotland' by the Rev. Cathaldus Giblin, O.F.M. | Campbell, J. L. | Article in Journal | | 1953 |
| Some observations on contemporary allegations as to bishop Dominick Bellew's (1745-1813) sympathies during the 1798 rebellion in Connaught | Hogan, Patrick | Article in Journal | | 1982 |
| Some priests and parsons of the Clones area, 1620-1840 | Ó Mórdha, Pilip | Article in Journal | | 1977 |
| Some priests' graves in Kilmurry old churchyard | MacHale, E. | Article in Journal | | 1990 |
| Some problems in the history of the Reformation | Corish, Patrick J. | Article in Journal | | 1955 |
| Some problems of the Irish mission, 1733-1774 : documents from Roman archives | | Article in Journal | | 1965 |
| Some recent contributions to Cork diocesan history | Collins, John T. | Article in Journal | | 1951 |
| Some records of the Irish College at Bordeaux | Walsh, T. J. (Timothy J.) | Article in Journal | | 1950 |
| Some sources concerning an Irish cleric in Argentina: Samiel O'Reilly (1840-1917) | | Article in Journal | | 2011 |
| Some unpublished letters of Cardinal Newman | | Article in Journal | | 1954 |
| Some unpublished letters of Mateo de Oviedo, archbishop of Dublin | | Article in Journal | | 1955 |
| Some Watson windows (1894-1931) in North Cork Churches | Ryan, Vera | Article in Journal | | 2018 |
| Something new on Blessed Patrick O'Hely, O.F.M. | Millett, Benignus | Article in Journal | | 2000 |
| Sound and fury : civil war dissent in the Cincinnati area | Klement, Frank L. | Article in Journal | | 1977 |
| Souper school in Tulla | McInerney, Raymond | Article in Journal | | 1993 |
| Sources for a history of Catholic life in Ireland, 1780-1850 | O'Neill, Thomas Patrick | Article in Journal | | 1960 |
| Sources for the history of the clergy of a diocese : seventeenth century Clogher | Gallagher, Patrick | Article in Journal | | 1957 |
| Sources for the history of the Irish College, Rome | Hanley, John | Article in Journal | | 1964 |
| Sources for the history of the Irish College, Rome | Hanly, John | Article in Journal | | 1964 |
| Sources of British and Irish history in the 'Instrumenta miscellanea' of the Vatican archives | Burns, C. S. (Charles S.) | Article in Journal | | 1971 |
| Sources of British and Irish history in the Instrumenta Miscellanea | Anonymous | Article in Journal | | 1971 |
| Sources relatives au débuts de Jansénisme et de l'Antijansénisme, 1640-1643 | Ceyssens, Lucien | Monograph or Collective Volume | Bibliothèque de l'Université | 1963 |
| South Africa | Doyle, F. B. | Monograph or Collective Volume | Gill | 1971 |
| South America | Canning, A. M. | Monograph or Collective Volume | Gill | 1971 |
| South Tipperary, 1570-1841 : religion, land and rivalry | Butler, David J., 1976- | Monograph or Collective Volume | Four Courts | 2006 |
| Special privileges for the Irish in the kingdom of Castile (1601-1680) : modern myth or contemporary reality? | O'Scea, Ciaran | Article in Book | | 2010 |
| Speech made by the Most Rev. Dr. O'Dwyer on the occasion of the conferring on him of the freedom of the city of Limerick, September 1916 | O'Dwyer, Edward | Article in Journal | | 1942 |
| Spenser's Nationalistic Images of Beauty : the Ideal and the Other in Relation to Protestant England and Catholic Ireland in The Faerie Queene Book 1 | Fitzpatrick, Joan | Article in Journal | | 1998 |
| Spirit of courage : life of Edmund Rice, founder of the Christian Brothers of Ireland | Humphreys, W. E. | Monograph or Collective Volume | C.T.S.I. | 1965 |
| Spiritual imperialism and the mission of the Irish race: the Catholic Church and emigration from nineteenth-century Ireland | Roddy, Sarah | Article in Journal | | 2013 |
| Sport, sectarianism and society in a divided Ireland | Bairner, AlanSugden, John Peter | Monograph or Collective Volume | Leicester University Press | 1993 |
| Sporting symbols, sporting identities : soccer and intergroup conflict in Scotland and Northern Ireland | Finn, Gerry B. | Article in Book | | 1994 |
| Sr Katherine Mulquin | Anonymous | Article in Journal | | 1988 |
| St Anthony's College of the Irish Franciscans, Louvain : 1927-1977, 1607-1977 | Conlan, Patrick, 1940- | Monograph or Collective Volume | | 1977 |
| St Anthony's College, Louvain | Mooney, Canice | Article in Journal | | 1969 |
| St Audeon's Roman Catholic Church, High Street, Dublin | Semple, Una | Article in Journal | | 2005 |
| St Bartholomew's : a history of the Dublin parish | Milne, Kenneth | Monograph or Collective Volume | Figgis | 1963 |
| St Brigid's Church : the first decade of an Irish parish in Memphis, 1870-1879 | Getz, John B. | Article in Journal | | 1991 |
| St Catherine Oughterlin 1792-1992 | McCreadie, John F. | Article in Journal | | 1992 |
| St Columban's Society : the modern disciples of the saint | O'Connor, Patrick | Article in Book | | 1951 |
| St Columcille's Catholic church | Byrne, MichaelWalsh, Gerald | Article in Book | | 1994 |
| St Finian's College 1802-1994 | Connell, Paul | Article in Journal | | 1994 |
| St Flannan's cathedral Killaloe : a short history | Owen, Edwin | Monograph or Collective Volume | Ballinakella | 1992 |
| St Isidore's: Rome and Donegal | Canning, B. J. (Bernard J.) | Article in Journal | | 2012 |
| St James's Church, Dublin. Centenary record | Anonymous | Monograph or Collective Volume | Metropolitan Publishing Co. | 1944 |
| St John the Evangelist Church, Moyraverty | McCorry, F.X. (Francis Xavier) | Article in Journal | | 2008 |
| St John's cathedral, Limerick | Fleming, John | Monograph or Collective Volume | Four Courts | 1987 |
| St John's Cathedral, Limerick | Devane, A. D. | Article in Book | | 1951 |
| St John's Church, Coolclogh, Co. Cork | O'Reilly, Barry | Article in Journal | | 2011 |
| St John's Lane : a 'poem in stone' from stones and stained glass | Kelly, David | Article in Book | | 2013 |
| St Joseph's Carmelite monastery, Kilmacud | Zherelin, Svyatoslav | Article in Journal | | 2013 |
| St Joseph's Church, Pontzpass : parish of Ballymore and Mullabrack, Armagh Archdiocese : its parish priests and curates, 1788-1996 | Anderson, Michael | Monograph or Collective Volume | The author | 1996 |
| St Joseph's Convent of Mercy, Kinsale : a celebration of 150 years, 1844-1994 | Hurley, Frank | Monograph or Collective Volume | Frank Hurley | 1994 |
| St Joseph's R.C. Church, Glasthule. 150 years old | O'Donnell, Mona | Article in Journal | | 2019 |
| St Kevin's way: A one-day camino to Glendalough | Doran, Kevin | Article in Book | | 2012 |
| St Kieran's College, Kilkenny | Birch, Peter | Monograph or Collective Volume | Gill | 1951 |
| St Kieran's College, Kilkenny : early history | Birch, Peter | Article in Journal | | 1959 |
| St Laurence's Parish Centre, Kilmacud | Chambers, Philip | Article in Journal | | 2019 |
| St Louis Convent and High School: a hundred years in Rathmines | Ní Thiarnaigh, Éilís | Article in Journal | | 2014 |
| St Mary's Cathedral, Kilkenny : notes on the foundation, construction, furnishings | Phelan, Margaret M. | Monograph or Collective Volume | The author | 1972 |
| St Mary's Catholic Church | Rooney, John | Article in Journal | | 1998 |
| St Mary's Christian Brothers, Portlaoise, 1847-1947 | Anonymous | Monograph or Collective Volume | McEvoy Press | 1948 |
| St Mary's Church, Bennekerry, Carlow. Solemnly dedicated Sunday 9 November 1862 | Browne, John | Article in Journal | | 2019 |
| St Mary's Church, Buttevant, Co. Cork 1828-1886 : notes on its building history | O'Brien, James | Article in Book | | 2013 |
| St Mary's Church, Haddington Road and its environs | Doran, LindaDoran, WilliamSpencer, Kevin | Monograph or Collective Volume | St Mary's Church, Haddington Rd. | 1989 |
| St Mary's College, Crosby : commemoration record | Anonymous | Monograph or Collective Volume | Philip | 1944 |
| St Mary's National School, Sandyford | Van Turnhout, Michael | Article in Journal | | 2019 |
| St Mary's R.C. church, Stewartstown | Fée, David | Article in Journal | | 1994 |
| St Mary's Sandyford: a local hidden treasure | Dixon, Michael | Article in Journal | | 2011 |
| St Mel's cathedral, Longford, 1840. visitor's guide | Clarkson, Sr. AngelaDuffy, Francis, bishopHughes, KittyMcGuinness, SiveMurray, Tom, Rev.O'Reilly, Colm, bishopSalmon, GerryWhite, Alex | Monograph or Collective Volume | [St Mel's Cathedral] | 2016 |
| St Michael's Church Gorey, 1839-1989 | | Monograph or Collective Volume | [s.n.] | 1989 |
| St Michael's Church, Dun Laoghaire | Scudds, Anna | Article in Journal | | 2004 |
| St Michael's, Cootehill : a brief history of the church, its buildings, its people | O'Brien, Hugh B. | Monograph or Collective Volume | [s.n.] | 1993 |
| St Michan's church and parish : our church. A labour of love through the centuries | Pender, Paddy | Monograph or Collective Volume | | 2011 |
| St Patrick : the legend and the bishop | O'Loughlin, Thomas | Article in Journal | | 2006 |
| St Patrick's Catholic Church | Hanna, Conac | Article in Journal | | 1994 |
| St Patrick's Church extension | Hasson, Seamus | Article in Journal | | 1999 |
| St Patrick's church Portaferry | Crangle, Josie | Article in Journal | | 1977 |
| St Patrick's Church Rakauhauka, Southard, New Zealand : - the faith of the Galway/Irish settlers | Beerkens, Denise | Article in Journal | | 1998 |
| St Patrick's church, Donaghmore, Co. Tyrone : a history | Bogue, Patricia | Monograph or Collective Volume | Blackstaff Press | 2018 |
| St Patrick's Church, Dungiven, 1884-1984 : centenary memorial | | Article in Journal | | 1984 |
| St Patrick's Church, Knockcroghery | Coyne, Ferdy | Article in Journal | | 2000 |
| St Patrick's College and the earlier Kilmore Academy : a centenary history | Cunningham, Terence | Monograph or Collective Volume | St Patrick's College | 1974 |
| St Patrick's College, Maynooth, the Irish language revival effort and the Meath-men who made their mark | Ní Mhaonaigh, Tracey
| Article in Journal | | 2022 |
| St Patrick's Collegiate Chapel, Maynooth, Co. Kildare | McGuane, Eilíse | Article in Journal | | 2011 |
| St Patrick's Day in Australia | O'Farrell, Patrick James | Article in Journal | | 1995 |
| St Patrick's Dundalk : an anniversary account | Murtagh, Michael | Monograph or Collective Volume | Bellew Print (printer) | 1997 |
| St Patrick's Missionary Society (The Kiltegan Fathers) | O'Cuilinn, Peadar C. | Article in Journal | | 2009 |
| St Patrick's Purgatory | J. E. | Article in Journal | | 1984 |
| St Patrick's Purgatory in the seventeenth century: a place to fight | Dolan, Phelim | Article in Journal | | 2022 |
| St Patrick's Purgatory, Lough Derg, county Donegal | Flynn, L. J. | Monograph or Collective Volume | Eason | 1986 |
| St Peter Canisius and Ireland | Hennig, J. | Article in Journal | | 1946 |
| St Peter's Church, Carrigfadda | O'Callaghan, Con | Article in Journal | | 2005 |
| St Peter's Church, Drogheda : a quasi-history | Carr, Patrick | Monograph or Collective Volume | Old Drogheda Society | 2000 |
| St Saviour's Church, Dublin : centenary, 1861-1961 | Anonymous | Monograph or Collective Volume | Dominican Publications | 1963 |
| St Teresa's Church, Clarendon Street, Dublin | Monaghan, Phelim | Monograph or Collective Volume | Carmelite Publications | 1992 |
| St Vincent de Paul and Ireland 1640-1660 | Purcell, Mary | Article in Journal | | 1964 |
| St. Anthony's College of the Irish Franciscans at Louvain, 1607-1977 | Conlon, Patrick | Monograph or Collective Volume | Assisi Press | 1977 |
| St. Charles Borromeo parish South Philadelphia 1868-1993 | Burke, Bobbye J. | Article in Journal | | 1993 |
| St. John's Church Kilnamanagh, and a short paper on the Oxford Movement. Church of Ireland. Diocese of Ferns | Hall, William John | Monograph or Collective Volume | E. J. Rickard (Printer) | 1956 |
| St. Joseph's Church, Poyntzpass & its Parish Priests and Curates 1788 - 2002 | Anderson, Michael | Article in Journal | | 2009 |
| St. Macarten's contribution to the Maynooth mission to China | Smyth, Bernard T. | Article in Book | | 1940 |
| St. Macarten's seminary, centenary souvenir, 1940 | Anonymous | Monograph or Collective Volume | [s.n.] | 1940 |
| St. Mary' Church, Lancaster, PA. : 1785-1877 | Musser, Edgar A. | Article in Journal | | 1969 |
| St. Mary's Catholic Church and Ballyheigue Parish | MacMahon, Bryan | Article in Book | | 2012 |
| St. Patrick's Church in Rouen | McGinnity, Gerard | Article in Journal | | 1979 |
| St. Patrick's Church, Donabate : centenary celebration | Bates, Peadar | Monograph or Collective Volume | St. Patrick's Church Centenary Committee | 2003 |
| St. Patrick's day 1628 in Witham, Essex | Aylmer, Gerald Edward, 1926-2000 | Article in Journal | | 1973 |
| St. Patrick's day in Dundee, c.1850-1900 : a contested Irish institution in a Scottish context | McCready, Richard B. | Article in Book | | 2009 |
| Staffordshire and the Irish revolt of 1641 | Atherton, IanCooksley, Michael | Article in Journal | | 2001 |
| Stair Chumann na Sagart | Ó Fiaich, Tomás | Article in Journal | | 1988 |
| State formation in seventeenth-century Ireland : the restoration financial settlement, 1660–62 | Johnston, Neil | Article in Journal | | 2016 |
| State intervention in disputes between secular and regular clergy in early seventeenth-century Ireland | Empey, Mark | Article in Journal | | 2018 |
| State of Raphoe diocese in early 1880s from the documents of 'De Propaganda Fide' | Anonymous | Article in Journal | | 1987 |
| State of the diocese of Kildare and Leighlin - 1800 A.D. | Crowe, Austin | Article in Journal | | 1977 |
| State policy in Irish education, A.D. 1536 to 1816, exemplified in documents collected for lectures to post-graduate classes. With an introduction | | Monograph or Collective Volume | | 1916 |
| Statement issued by the cardinal primate and the archbishops and bishops of Ireland on the condition of their country | Anonymous | Article in Journal | | 1942 |
| Statement of the Irish hierarchy on the condition of the country | Anonymous | Article in Journal | | 1942 |
| Staten Island Irish | Ridge, John T. | Article in Journal | | 1998 |
| Stations past | Somers, Nancy | Article in Journal | | 1996 |
| Statistical Appendices | Kinnear, Timothy | Article in Book | Oxford University Press | 2023 |
| Status symmetry effect : the association of exposure and PTS in Israel-Palestine and Northern Ireland | Hirsch-Hoefler, Sivan ; Vashdi, Dana R. ; Lowe, Robert D. ; Muldoon, Orla ; Hobfoll, Stevan E. ; Canetti, Daphna | Article in Journal | | 2021 |
| Steadfast saints or malleable models? seventeenth-century Irish hagiography revisited | Ryan, Salvador | Article in Journal | | 2005 |
| Steering clear : broadcasting and the Church, 1926-1951 | Lynch, Brian | Article in Journal | | 2000 |
| Steps on my pilgrim journey : memories and reflections | Daly, Cathal B. | Monograph or Collective Volume | Veritas | 1998 |
| Stories from a sacred landscape : Crogan Hill to Clonmacnoise | O'Brien, Caimin | Monograph or Collective Volume | Offaly County Council|Mercier Press | 2006 |
| Strained neutrality : Irish-American Catholics, Woodrow Wilson, and the Lusitania | Rowland, Thomas J. | Article in Journal | | 1995 |
| Strange sermons, 1840-41 : a turbulent priest in Barndarrig and Kilbride | Hannigan, Ken | Article in Journal | | 2015 |
| Strange voices in the 'Land of Song' : Belgian and German organist appointments to Catholic cathedrals and churches in Ireland, 1859-1916 | Collins, Paul | Article in Book | | 2007 |
| Structure and agency : comparative perspectives on the Catholic Irish experience in New Zealand and the U.S. | Fraser, Lyndon | Article in Journal | | 1995 |
| Students of All Hallows College, Dublin, from the diocese of Kilmore, 1842-1895 | Mitchell, Kilian J. | Article in Journal | | 1965 |
| Students of Kilmore Academy | Cunningham, Terence | Article in Journal | | 1985 |
| Students of the Irish College at Salamanca, 1592-1638 | Fenning, Hugh | Article in Journal | | 2009 |
| Students of the Irish College, Salamanca | O'Doherty, D. J. | Article in Journal | | 1914 |
| Studies in Irish Cistercian history | Donovan, FinbarrÓ Conbhuidhe, Colmcille | Monograph or Collective Volume | Four Courts | 1998 |
| Studies in Irish Cistercian history : 2, the Irish Cistercians under the Stuarts | Ó Conbhuidhe, C. | Article in Journal | | 1965 |
| Subverting the flapper : the unlikely alliance of Irish popular and ecclesiastical press in the 1920s | Valiulis, Maryann Gialanella, 1947- | Article in Book | | 2004 |
| Succession lists of parish priests in the archdiocese of Dublin, 1771-1963 | O'Riordan, W. M. | Article in Journal | | 1971 |
| Sufficiently radical catholicism, progressivism, and the bishop's program of 1919 | McShane, Joseph | Monograph or Collective Volume | Catholic University of America Press | 1986 |
| Supernational catholicity : Dublin and the 1932 Eucharistic Congress | Boyd, Gary A. | Article in Journal | | 2007 |
| Survey of recent publications : III, Ecclesiastical history | Ó Fiaich, Tomás | Article in Journal | | 1954 |
| Survival and reorganisation, 1650-95 | Millett, Benignus | Monograph or Collective Volume | Gill | 1968 |
| Surviving the Civil Constitution of the Clergy : Luke Joseph Hooke's revolutionary experiences | O'Connor, Thomas | Article in Journal | | 1996 |
| Sustaining a confessional state : the Irish parliament and Catholicism | Kelly, James, 1959- | Article in Book | | 2010 |
| Sweet good mothers and young women out in the world : the roles of Irish American women in late nineteenth and early twentieth century Worcester, Massachusetts | Meagher, Timothy J. | Article in Journal | | 1986 |
| Sweetman breweries in eighteenth-century Dublin | Magee, Sean | Article in Journal | | 2015 |
| Swift and Catholic Ireland | Mahony, Robert | Article in Book | | 1995 |
| Sylvester Lloyd, O.F.M., bishop of Killaloe, 1728-1739 | Murphy, Ignatius | Article in Journal | | 1987 |
| Sylvester O'Halloran, 1728-1807 | Lyons, J. B. (John Benignus) | Article in Journal | | 1989 |
| Symbol of predjudice - football and the Catholic community in Scotland | Bradley, Joseph M. | Article in Journal | | 1996 |
| Synod of Bishops 1990 : formation of priests | Lovatt-Dolan, Elizabeth | Article in Journal | | 1990 |
| Tabula memorum | Connolly, Al | Article in Journal | | 1993 |
| Tabula memorum | Connolly, Al | Article in Journal | | 1994 |
| Tabula memorum (conclusion) | Connolly, Al | Article in Journal | | 1996 |
| Tabular memorum (conclusion) | Connolly, Al | Article in Journal | | 1996 |
| Tadhg Mac Eochaidh, easbog Chluain Fearta, 1678-1687 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1944 |
| Tadhg Ó Cianáin : an Irish scholar in Rome | NA | Monograph or Collective Volume | Mater Dei Institute of Education | 2011 |
| Tadhg Ó Conaill | O'Dwyer, Peter | Article in Journal | | 1946 |
| Taig talk | Mac Poilin, Aodán | Article in Book | | 2000 |
| Taking a stand : memoir of an Irish priest | McVeigh, Joe | Monograph or Collective Volume | Mercier Press | 2008 |
| Taking care of their own : Irish Catholics, health care and Saint Vincents Hospital | McCauley, Bernadette | Article in Journal | | 1993 |
| Taking sides : conformity in early modern Kilkenny | Brennan, Monica | Article in Book | | 2003 |
| Taking sides : the emergence of Irish Catholic ideology | Lennon, Colm | Article in Book | | 2003 |
| Tartaraghan precinct, north Armagh : an account of the district south of Lough Nenagh between the Rivers Bann and Blackwater | Fleming, W. E. C. | Monograph or Collective Volume | The author | 2006 |
| Teachers of Cashel and Emly, A.D. 1750-1760 | Dwan, Thomas | Article in Journal | | 1939 |
| Teachtaireacht an Athar Eoghan | Ó Doibhlin, Breandán | Article in Journal | | 1964 |
| Teagasc Críostaí Uí Eoghasa | Mag Raghnaill, Fearghal | Article in Journal | | 1961 |
| Teller of tales: an insight into the life and times of Brother Paul Carney (1844-1928), travelling 'quester' and chronicler of the life of James Lynchehaun, nineteenth-century Achill criminal | Byrne, Patricia | Article in Journal | | 2009 |
| Temperance in Tipperary : Father Mathew and Archbishop Slattery, 1839-1854 | Quinn, John F. | Article in Journal | | 1995 |
| Temple Hugh O'Connell alias Teampall Dubh revisited | MacMahon, Michael | Article in Journal | | 2003 |
| Ten documents relating to Irish diocesan affairs, 1740-84, from Franciscan Library, Killiney | Giblin, Cathaldus | Article in Journal | | 1978 |
| Ten more priests | Nash, Robert | Monograph or Collective Volume | Clonmore & Reynolds | 1965 |
| Terence Albert O'Brien's speech from the scaffold | Walsh, Edward F. | Article in Journal | | 1997 |
| Text and translation of James Gallagher's 'A sermon on the Assumption of Our Blessed Lady' (1736) | Mac Murchaidh, Ciarán | Article in Journal | | 2009 |
| That dangerous serpent: Garibaldi and Ireland, 1860-1870 | O'Connor, Anne | Article in Journal | | 2002 |
| That Old Time Religion | Logue, Rose Mary | Article in Journal | | 2010 |
| The "Antrim Plot" of 1641 - a myth? | Ohlmeyer, Jane H. | Article in Journal | | 1992 |
| The "Antrim plot" of 1641 - a myth? : a response | Perceval-Maxwell, Michael | Article in Journal | | 1994 |
| The "Antrim plot" of 1641 : a rejoinder | Ohlmeyer, Jane H. | Article in Journal | | 1994 |
| The "Battle of the Borough" and the "Saige O Timaru" : sectarian riot in colonial Canterbury | Brosnahan, Seán G. | Article in Journal | | 1994 |
| The "brick palace" at Drumcondra : Archbishop Walsh and the building of Archbishop's House | Sheehy, David C. | Article in Book | | 2000 |
| The "Christian Society" of Garret Fitzgerald and Pierre Elliott Trudeau | Dunlop, Joseph | Article in Journal | | 2009 |
| The "Hay plan" : an account of Anglo-French recruitment efforts in Ireland, August 1918 | De Wiel, Jérôme aan | Article in Journal | | 2000 |
| The "Highgate Affair" : episode in establishing the authority of the Roman Catholic diocese of Burlington | Murphy, Ronald ChasePotash, P. Jeffrey | Article in Journal | | 1984 |
| The "Udienze" series in the Roman archives of Propaganda Fide, 1750-1820 | Fenning, Hugh | Article in Journal | | 1994 |
| The "Urbs" and "Hibernia": Missionary connections
between the Irish community of Rome and Ireland in the Seventeenth Century | Sanfilippo, Matteo | Article in Book | | 2019 |
| The 'absenting of the bishop of Armagh' : eucharistic controversy and the English origins of Irish Catholic identity, 1550-51 | Murray, James | Article in Book | | 2013 |
| The 'Aggiornamento' of the Irish Catholic Church in the 1960s and 1970s | Bevant, Yann | Article in Journal | | 2014 |
| The 'Austral Light' group | Morgan, Patrick | Article in Journal | | 2001 |
| The 'greening' of Cardinal Manning | Casey, Fergal | Article in Book | | 2013 |
| The 'imperialistic bishop of Ross' and his political influence | O'Regan, Liam | Article in Journal | | 1997 |
| The 'local' Irish in the west of Scotland, 1851-1921 | Vaughan, Geraldine | Monograph or Collective Volume | Palgrave Macmillan | 2013 |
| The 'making of men' : the Idea and reality of Newman's university in Oxford and Dublin | Shrimpton, Paul | Monograph or Collective Volume | Gracewing | 2014 |
| The 'massacre' at Longford in 1641 | Mac Gleannáin, Liam | Article in Journal | | 1980 |
| The 'new' church at Shanballymore | Condon, Gerard | Article in Journal | | 2009 |
| The 'papal letters to the Irish' cited by Bede : how did he get them? | Herren, Michael | Article in Book | | 2015 |
| The 'Popish plot' in county Carlow | Duggan, Maura | Article in Journal | | 1977 |
| The 'prelections' of Nicholas Callan (1799-1864) | McLoughlin, Patrick J.I., Monsignor | Article in Journal | | 1964 |
| The 'Processus Datariae' for Denis O'Driscoll, 1640 | Giblin, Cathaldus | Article in Journal | | 1965 |
| The 'Processus Datariea' and the appointment of Irish bishops in the seventeenth century | Giblin, Cathaldus | Article in Book | | 1957 |
| The 'sacred hunger of ambitious minds' : Spenser's savage religion | Hadfield, Andrew | Article in Book | | 1996 |
| The 'social volcano' : policing Victorian Belfast | Radford, Mark | Article in Book | | 2006 |
| The 'tithe war' in Co. Longford in the 1830s | O'Ferrall, Fergus | Article in Journal | | 2013 |
| The 1622 royal visitation of the Church of Ireland in Ulster | Scott, Brendan | Article in Book | NA | 2013 |
| The 1641 rebellion and anti-popery in Ireland | Clarke, Aidan | Article in Book | | 1993 |
| The 1840s : decade of tribulation | Acheson, T. W. | Article in Book | | 1994 |
| The 1861 census from the Catholic parish of Paulstown-Goresbridge | | Article in Journal | | 2019 |
| The 1906 education bill : Catholic peers and Irish nationalists | Cashman, John | Article in Journal | | 1987 |
| The 1906 Education Bill : catholic peers and Irish nationalists | Cashman, John | Article in Journal | | 1987 |
| The 1920's - Of the Experience 'from Below' | Higgins, Michael D. | Article in Book | | 2023 |
| The 1932 Congress and the Irish diaspora | O'Dwyer, Rory | Article in Book | | 2012 |
| The 1932 Patrician Pageant | Rankin, Fred | Article in Journal | | 2001 |
| The 1990 Synod of Bishops : priestly formation | Dalton, William | Article in Journal | | 1990 |
| The 20th century : an age of change and challenge | Forde, Walter | Article in Book | | 1999 |
| The 2nd Duke of Leinster and the establishment of St Patrick's College, Maynooth | Begadon, Cormac | Article in Book | | 2014 |
| The 31st International Eucharistic Congress, 1932 | O'Hara, Aidan | Article in Journal | | 2013 |
| The 50th International Eucharistic Congress, Dublin, 2012: communion with Christ and with one another | Fuller, Louise | Article in Book | NA | 2012 |
| The Abbé Edgeworth Bi-Centenary Commemoration | Morris, Martin | Article in Journal | | 2007 |
| The Abbé MacGeoghegan dies | Le Juen, Yves | Article in Journal | | 1998 |
| The abbey : Bantry's Fransican friary | Crowley, Seamus | Article in Journal | | 1991 |
| The Academy of Christian Art (1929-1946) : an aspect of Catholic cultural life in newly independent Ireland | Bhreathnach-Lynch, Síghle | Article in Journal | | 1996 |
| The Act Book of the Diocese of Armagh, 1518-1522 : PRONI, MS DIO/4/2/11 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2020 |
| The Act of Union, nationalism and religion : 1780-1850 | Girvin, Brian | Article in Book | | 1994 |
| The activities and personnel of the general committee of the Catholics of Ireland, 1767-84 | MacGeehin, Maureen | Thesis | | 1952 |
| The Adelaide Irish and the politics of St Patrick’s day 1900-1918 | Macintyre, Clement | Article in Book | | 1995 |
| The administration of the diocese of Dublin during the eighteenth century | Kennedy, Raymond Thomas | Thesis | | 1970 |
| The age of Pio Nono : the age of Paul Cullen | Duffy, Eamon, 1947- | Article in Book | | 2011 |
| The aims and achievements of Lord Grenville | Jupp, Peter, 1940-2006 | Article in Book | | 1976 |
| The American achievement : a report from Great Ireland | Greeley, Andrew M. | Article in Book | | 1980 |
| The American Catholic experience : a history from colonial times to the present | Dolan, Jay P., 1936- | Monograph or Collective Volume | Doubleday | 1885 |
| The American Catholic press and the Easter rebellion | Rowland, Thomas J. | Article in Journal | | 1995 |
| The American Catholic press and the Easter Rising | Rowland, Thomas J. | Article in Book | | 2016 |
| The analecta of David Rothe, Bishop of Ossory | Moran, Patrick Francis, cardinal, 1830-1911Roth, David, R. C. Bishop of Ossory | Monograph or Collective Volume | M.H. Gill & Son | 1884 |
| The Ancient Order of Hibernians in Donegal 1904-1927 | Beattie, Sean | Article in Journal | | 2018 |
| The Anglican world : problems of coexistence during the pontificates of Urban VIII and Innocent X (1623-1655) | Conway, Dominic | Article in Book | | 1972 |
| The annual collection for His Holiness Pope Leo XIII in the diocese of Dublin | Anonymous | Article in Journal | | 2000 |
| The apostasy of Miler McGrath | Ó Mearáin, Lorcán | Article in Journal | | 1958 |
| The apparition at Knock : a critical analysis of facts and evidence | Walsh, Michael, [Rev.] | Monograph or Collective Volume | Veritas | 2008 |
| The apparition at Knock : a survey of facts and evidence | Walsh, Michael | Monograph or Collective Volume | The Leinster Leader Ltd. | 1955 |
| The appointment of Bishop Michael Flannery and proposed revival of Roscrea diocese, 1858 | Murphy, Ignatius | Article in Journal | | 1984 |
| The appointment of Bishop Tyrrell and its consequences | Ó Fiaich, Tomás | Article in Journal | | 1955 |
| The appointment of blessed Oliver Plunket to Armagh | Ó Fiaich, Tomás | Article in Journal | | 1958 |
| The appointment of Catholic bishops in 19th century Ireland | Whyte, J. H. | Article in Journal | | 1962 |
| The appointment of Catholic Bishops to Killaloe Diocese, 1819-50 | Murphy, Ignatius | Article in Journal | | 1983 |
| The appointments of Patrick Curtis and Thomas Kelly as archbishop and coadjutor archbishop of Armagh | Macaulay, Ambrose | Article in Journal | | 1982 |
| The archbishops of Tuam, 1700-2000 | Waldron, Kieran | Monograph or Collective Volume | Nordlaw Books | 2008 |
| The archbishops, bishops and priests who served in the Archdiocese of Dublin : 1900 to 2011 | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 2012 |
| The Architecture and Art of British and Irish Catholicism | Proctor, Robert | Article in Book | Oxford University Press | 2023 |
| The architecture of Americanism : the Revere Town Hall | Forrey, Robert | Article in Journal | | 1990 |
| The archives at Simancas as a source for Irish ecclesiastical history | Mooney, Canice | Article in Journal | | 1955 |
| The archives of St. Isidore's College, Rome | Millett, Benignus | Article in Journal | | 1985 |
| The archives of the archdiocese of Dublin | Sheehy, David C. | Article in Journal | | 1989 |
| The archives of the Catholic diocese of Ferns | De Vál, Séamas S. | Article in Journal | | 2005 |
| The archives of the diocese of Cork & Ross, Ireland | Bolster, M. A. | Article in Journal | | 1988 |
| The archives of the Missionary Sisters of the Holy Rosary | Richardson, Cora | Article in Journal | | 1991 |
| The arrest of Father Hugh Curley, Adm, Clare Island, 1921 | Waldron, Kieran | Article in Journal | | 2010 |
| The arrest of Oliver Plunkett | Brady, John, d.1963 | Article in Journal | | 1954 |
| The arrival of the Daughters of Charity of St Vincent de Paul to Drogheda, Ireland, November 1855 | Casey, CarmelPrunty, JacintaSherlock, Olivia | Article in Book | | 2014 |
| The ascendancy and the penal laws | Kelly, James, 1959- | Article in Book | | 2006 |
| The attempted anglicization of Ireland in the seventeenth century : an exemplar of "British history" | Canny, Nicholas P. | Article in Book | | 1993 |
| The attitude of contemporary Irish historical writers towards Rinuccini's excommunication of the supporters of the cessation with Inchiquin to the outbreak of the Remonsttrance controversy | Corish, P.J., Rev. | Thesis | | 1952 |
| The attitude of the Irish Catholic clergy towards emigration during the great famine | MacDonagh, Oliver | Article in Journal | | 1947 |
| The attitude of the Roman Catholic Church towards trade unionism in the North of England, 1833-42 | Treble, James H. | Article in Journal | | 1970 |
| The Augustinians and Dunmore | Birmingham, Hubert | Article in Journal | | 1994 |
| The Augustinians in Abbeyside, 1290-1990 | Fraher, William | Monograph or Collective Volume | Augustinian 700 Committee | 1990 |
| The Aussi cardinal from Leighlin : Patrick Francis Moran | Farry, Michael | Article in Journal | | 2000 |
| The ballad of Marcus Lyon : the story lives on | Williams, Melvin G. | Article in Journal | | 1988 |
| The ballot not the bullet: the Northern Ireland Social Democratic and Labour Party | McAllister, Ian | Thesis | | |
| The Ballynowlart martyrs | Milner, William Henry | Article in Journal | | 1965 |
| The Baltinglass rebellion and its Kilcock connections, 1579-1583 | Lynch, Kevin | Article in Journal | | 1995 |
| The Baltinglass rebellion, 1580 : English dissent or a Gaelic uprising? | Maginn, Christopher | Article in Journal | | 2004 |
| The Band of Hope | Finlay, John | Article in Journal | | 2022 |
| The banning and unbanning of Kate O'Brien's "The Land of Spices" | Fischerova, Jana | Article in Journal | | 2018 |
| The base of a probable candlestick from the Mass Rock at Carrickanaltar, Aghanaglack, County Fermanagh | MacDonald, Philip | Article in Journal | | 2008 |
| The battle for affection : the Catholic church and radical politics 1790-1800 | Keogh, Dáire | Article in Journal | | 1995 |
| The battle of Portarlington | Powell, J. S. (John Stocks) | Article in Journal | | 2004 |
| The beatified martyrs of Ireland (1) : Patrick O'Healy, O.F.M., Conn O'Rourke, O.F.M. | Millett, Benignus | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (10) : Terence Albert O'Brien, O.P., Bishop of Emly | Valkenburg, Augustine | Article in Journal | | 2001 |
| The beatified martyrs of Ireland (11) : John Kearney, O.F.M. (Priest) | Millett, Benignus | Article in Journal | | 2001 |
| The beatified martyrs of Ireland (2) : Matthew Lambert, Robert Meyler, Edward Cheevers, Patrick Cavanagh, and companions | Corish, Patrick J. | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (3) : Dermot O'Hurley, Archbishop of Cashel | Meagher, J. J. | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (4) : Margaret Ball (née Birmingham) | Brady, Ciarán | Article in Journal | | 1999 |
| The beatified martyrs of Ireland (5) : Maurice MacKenraghty | Coombes, James | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (6) : Dominic Collins, S.J. | Finegan, Francis | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (7) : Conor O'Devany, O.F.M., Bishop of Down & Conor; Patrick O'Loughran, Priest | Devlin, Kieran | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (8) : Francis Taylor | Lennon, Colm | Article in Journal | | 2000 |
| The beatified martyrs of Ireland (9) : Peter Higgins, O.P. | Valkenburg, Augustine | Article in Journal | | 2001 |
| The beatified martyrs of Ireland, 12 : Wiliam Tirry, O.S.A., priest | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 2001 |
| The beauties of Ireland : being original delineations, topographical, historical, and biographical of each county. 2 vols. | Brewer, James Norris | Monograph or Collective Volume | | 1823 |
| The beginning of the Irish effort to provide for the Roman Catholic foreign missions before the famine | Larkin, Emmet | Article in Book | | 2005 |
| The beginnings of Irish Catholic organisation in the eighteenth century | O'Conor, Charles | Article in Journal | | 1943 |
| The beginnings of the Catholic parishes of Dundalk, Haggardstown and Kilkerly in the county of Louth | O'Sullivan, Harold | Article in Journal | | 2003 |
| The beginnings of the devotional revolution in Ireland: the Parish Mission Movement, 1825-1846 | Larkin, Emmet
| Article in Journal | | 2014 |
| The beginnings of the Irish College, Rome | Corish, Patrick J. | Article in Book | | 2008 |
| The Belfast Troubles at one hundred | Wilson, Tim | Article in Book | | 2022 |
| The Bellews of Mount Bellew : a Catholic gentry family in eighteenth-century Ireland | Harvey, Karen J. | Monograph or Collective Volume | Four Courts | 1998 |
| The bi-centenary of Culloden, 1746-1946 | Hayes, Richard Francis | Article in Journal | | 1946 |
| The Bible war in Ireland : the "Second Reformation" and the polarization of Protestant-Catholic relations, 1800-1840 | Whelan, Irene | Monograph or Collective Volume | Lilliput | 2005 |
| The Birkenhead Garibaldi riots of 1862 | Neal, F. | Article in Journal | | 1982 |
| The birth of a mission | Dempsey, Mary | Article in Journal | | 2006 |
| The birthplace of Father Matt Keefe | Prendergast, Ella | Article in Journal | | 1987 |
| The bishop in politics : life and career of John MacEvilly, Bishop of Galway 1857-81, Archbishop of Tuam 1881-1902 | Bane, Liam | Monograph or Collective Volume | Westport Historical Society | 1993 |
| The bishop's palace | Lynch, Helen | Article in Book | | 1994 |
| The bishops and education | Wall, Patrick | Article in Journal | | 1982 |
| The bishops of Ossory from the Anglo-Norman invasion to the present day | Moran, Patrick Francis, cardinal, 1830–1911 | Article in Journal | | 1883 |
| The bishops' banishment act of 1697 (9 Will. III, c.1) | Simms, J. G. (John Gerald) | Article in Journal | | 1970 |
| The Blackwater Catholics and county Cork society and politics in the eighteenth century | Cullen, L. M. (Louis Michael) | Article in Book | | 1993 |
| The Blakes of Ballyglunin: Catholic merchants and landownders of Galway town and county in the seventeenth and eighteenth centuries | Walsh, Philip | Thesis | | 2017 |
| The Blessed Virgin Mary | O'Brien, Susan | Article in Book | Oxford University Press | 2023 |
| The books that define Ireland | Fanning, BryanGarvin, Tom | Monograph or Collective Volume | Merrion | 2014 |
| The Boston Pilot reports the Civil War | Walsh, Francis R. | Article in Journal | | 1981 |
| The boycott at Fethard-on-Sea, 1957 : a study in Catholic-Protestant relations in modern Ireland | Broderick, Eugene | Monograph or Collective Volume | Cambridge Scholars Publishing | 2011 |
| The boycott at Fethard-on-sea, county Wexford, 1957 | Broderick, Eugene | Article in Journal | | 2009 |
| The Break with Rome and the Early Reformation | Marshall, Peter | Article in Book | | 2023 |
| The Brigidine Sisters in Ireland, America, Australia and New Zealand, 1807-1922 | Power, Ann | Monograph or Collective Volume | Four Courts Press | 2018 |
| The British government and Archbishop Daniel Mannix | O'Brien, John | Article in Journal | | 1988 |
| The British Government and the appointment of Tomás Ó Fiaich as Archbishop of Armagh | Rafferty, Oliver P. | Article in Journal | | 2014 |
| The British state and the education of the Irish Catholics, 1850-1921 | Comerford, R.V. (Richard Vincent) | Article in Book | | 1991 |
| The Brow, the Brothers and the Bogside : a history of the Christian Brothers School, Derry, 1854-1990 | Ledwidge, John | Monograph or Collective Volume | Guildhall Press | 1990 |
| The building of Ballinabranna Chapel 1823-1830 | Kinsella, Shay | Article in Journal | | 2024 |
| The building of St Colman's Cathedral, Cobh | Wilson, Ann | Article in Journal | | 2004 |
| The Burnells and the penal laws | Blackall, Henry, Sir | Article in Journal | | 1969 |
| The burning of Freeduff Presbyterian Church, 1743 | Farrell, Sean | Article in Journal | | 2005 |
| The Cahil propositions, 1629 | O'Connell, W. D. | Article in Journal | | 1943 |
| The Cahir estate in the 19th and 20th centuries | McCarthy, Robert | Article in Journal | | 2011 |
| The Callahans and the Murphys (MGM, 1927) : a case study of Irish-American and catholic church censorship | Walsh, Francis R. | Article in Journal | | 1990 |
| The Callan image | McLaughlin, P. J. | Article in Journal | | 1964 |
| The campaign for Catholic emancipation in Kerry, 1810-1830 | Bric, Maurice J. | Article in Book | | 2020 |
| The campaign for Catholic emancipation, 1823-9 | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| The campaign of the Irish royalist army in Cheshire, November 1643-January 1644 | Lowe, John | Article in Journal | | 1960 |
| The capture of Conor O Devany, martyr | Devlin, Kieran | Article in Journal | | 1993 |
| The Capuchins in Ireland | Paschal, Father | Article in Journal | | 1964 |
| The cardinal Tomás Ó Fiaich memorial library and archive | Ó Doibhlin, Crónán | Article in Journal | | 2001 |
| The career and problem of David Wolfe, 1528-1579? Jesuit and Papal Commissary to Ireland | Morrissey, Thomas J. | Article in Journal | | 2007 |
| The career of the 2nd Earl of Limerick : an wxample of James's policy of religious toleration | Corp, Edward T. | Article in Book | | 2005 |
| The Carlow College priest : from Australasia to the Americas | McEvoy, John | Article in Book | | 2008 |
| The Carmelite nuns in Dublin, 1644-1829 | Kingston, John | Article in Journal | | 1964 |
| The Carmelites in Ardee | Mac Íomhair, Diarmuid | Article in Journal | | 1983 |
| The Caroline church : James Ussher and the Irish dimension | Capern, Amanda L. | Article in Journal | | 1996 |
| The Carroll Family of Maryland | Hoffman, Ronald | Article in Journal | | 2007 |
| The case for Brother Walfrid | Burke, Mark | Article in Book | | 2004 |
| The case of Sacred Heart parish | Guignard, Michael | Article in Journal | | 1982 |
| The case of Thaddeus O'Malley. Labour, nationality and religion in nineteenth-century Ireland | D'Arcy, Fergus A., 1943- | Article in Journal | | 1994 |
| The case of the convert bishop : John Clement Gordon, 1644-1726 | Quinn, James | Article in Journal | | 1958 |
| The case of the Cushendall schoolmaster | Buckley, Anthony D. | Article in Journal | | 1992 |
| The cathedral church of St Fachta | Peters, Christopher | Article in Journal | | 1999 |
| The cathedral church of St. Colman's, Cloyne : historical and descriptive | Berry, Hugh F. | Monograph or Collective Volume | Guy & Co. | 1937 |
| The Cathedral of SS Patrick and Felim, Cavan, 1919-47 | Duffy, Francis | Article in Journal | | 1992 |
| The Cathedral of the Assumption : an outline of its history | O'Toole, James | Article in Book | | 1989 |
| The Catholic and urban profile of Irish America | McCaffrey, Lawrence J., 1925- | Article in Journal | | 1993 |
| The Catholic bishops and revolutionary violence in Ireland. Some 19th and 20th century comparisons | Rafferty, Oliver P. | Article in Journal | | 1994 |
| The Catholic Bulletin and republican Ireland, with special reference to J. J. O'Kelly ('sceilg') | Murphy, Brian P. | Monograph or Collective Volume | Athol | 2005 |
| The Catholic Bulletin, 1911-39 : battle of civilizations or long revolution | Maume, Patrick | Article in Book | NA | 2021 |
| The Catholic chapel and the Catholic community : observance and tradition in nineteenth-cnetury County Down | Rafferty, Oliver P. | Article in Book | | 1997 |
| The Catholic chaplaincy | Leonard, Jane | Article in Book | | 1986 |
| The Catholic church | Kennedy, David | Article in Book | | 1957 |
| The Catholic church after the Famine : consolidation and change | Moran, Gerard | Article in Book | | 2002 |
| The Catholic Church and Catholic schools in Northern Ireland : the price of faith | McGrath, Michael | Monograph or Collective Volume | Irish Academic Press | 2000 |
| The Catholic Church and Catholics in an era of sanctions and restraints, 1690–1790 | O'Connor, Thomas | Article in Book | | 2018 |
| The Catholic church and community : an Australian history | O'Farrell, Patrick James | Monograph or Collective Volume | [s.n.] | 1992 |
| The Catholic Church and investor capitalism in late-nineteenth century Ireland | Roddy, Sarah ; Doyle, Patrick | Article in Journal | | 2023 |
| The catholic church and Ireland in the age of revolution and rebellion, 1782-1803 | O'Donoghus, Patrick, Rev. | Thesis | | 1975 |
| The Catholic church and Irish nationalism in Toronto, 1850-1900 | Stortz, Gerald J. | Article in Book | | 1988 |
| The Catholic church and Irish politics in the eighteen sixties | Norman, Edward Robert | Monograph or Collective Volume | Dundealgan Press | 1965 |
| The Catholic Church and partition 1918-22 | Rafferty, Oliver P. | Article in Journal | | 1997 |
| The Catholic church and politics in Ireland | Keogh, Dermot | Article in Book | | 1993 |
| The Catholic church and radicalism in Ireland in 1790s | Keogh, Daire | Thesis | | 1992 |
| The Catholic church and relief of the poor, 1815-45 | O'Neill, Timothy P. | Article in Journal | | 1973 |
| The Catholic Church and religious culture in nineteenth-century Mayo | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2014 |
| The Catholic church and revolution | Gilley, Sheridan | Article in Book | | 1988 |
| The Catholic church and revolution in nineteenth-century Ireland | Gilley, Sheridan | Article in Book | | 1984 |
| The Catholic Church and the 'Godless colleges', 1845--1995 | Keogh, Dermot | Article in Book | | 1997 |
| The Catholic Church and the campaign for Emancipation in Ireland and England | Macauley, Ambrose | Monograph or Collective Volume | Four Courts Press | 2018 |
| The Catholic church and the famine | Kerr, Donal A. | Monograph or Collective Volume | Columba | 1996 |
| The Catholic Church and the foundation of the Northern Ireland state, 1912-1930 | Harris, Mary N. | Monograph or Collective Volume | Cork University Press | 1993 |
| The Catholic church and the Irish Free State 1923-1932 | Keogh, Dermot | Article in Journal | | 1994 |
| The Catholic Church and the Irish State, 1916-1973 | Ó Corráin, Daithí | Article in Book | Oxford University Press | 2024 |
| The Catholic Church and the Irish temperance movement, 1838-1901 | Malcolm, Elizabeth | Article in Journal | | 1982 |
| The Catholic church and the Knights of Labor | Browne, Henry J.Monaghan, John P. | Monograph or Collective Volume | Catholic University of America Press | 1949 |
| The Catholic church and the labour movement: Dublin and Clydeside, 1906-1932 | Quigley, Dermot | Thesis | | 1991 |
| The Catholic Church and the Nationalist community in Northern Ireland since 1960 | Rafferty, Oliver P. | Article in Journal | | 2008 |
| The Catholic Church and the Northern Ireland crisis, 1968-1986 | McElroy, Gerald | Monograph or Collective Volume | | 1991 |
| The Catholic church and the promotion of a Gaelic identity in Irish secondary schools, 1893-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 2002 |
| The Catholic Church and the Protestant state : nineteenth-century Irish realities | Rafferty, Oliver P. | Monograph or Collective Volume | Four Courts | 2008 |
| The Catholic Church and the secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Monograph or Collective Volume | Peter Lang | 1999 |
| The Catholic Church and the War of Independence | Heffernan, Brian | Article in Book | | 2017 |
| The Catholic church from Parnell to Partition | Harris, Mary N. | Article in Book | | 2002 |
| The Catholic Church in contemporary Ireland | Kenney, James F. | Article in Journal | | 1932 |
| The Catholic church in county Kilkenny 1600-1800 | Ó Ferghail, Fearghus | Article in Book | | 1990 |
| The Catholic church in county Tipperary, 1700-1900 | Whelan, Kevin | Article in Book | | 1985 |
| The Catholic Church in England in the nineteenth century : the Irish dimension | Rafferty, Oliver P. | Article in Book | Institute for Theological Partnerships Publishing | 2015 |
| The Catholic Church in Ireland and Northern Ireland : nationalism, identity, and opposition | Crotty, William | Article in Book | | 2006 |
| The Catholic church in Ireland in the age of the North Atlantic revolution, 1775-1815 | Keogh, Dáire | Article in Book | | 2002 |
| The Catholic Church in Ireland Since the 1950s | Keogh, Dermot | Article in Book | | 2007 |
| The Catholic church in Ireland, 1914-1918 : war and politics | De Wiel, Jérome aan | Monograph or Collective Volume | Irish Academic Press | 2003 |
| The Catholic Church in nineteenth-century Ireland | Newsinger, John | Article in Journal | | 1995 |
| The Catholic Church in nineteenth-century Ireland : a sociological study | Keenan, D. J. | Monograph or Collective Volume | Gill & Macmillan | 1983 |
| The Catholic Church in nineteenth-century Ireland : a sociological study | Keenan, D. J. | Thesis | | |
| The Catholic church in Strabane since c.1600 | Dooher, John | Article in Book | | 2000 |
| The Catholic church in the age of O'Connell | Kerr, Donal A. | Article in Book | | 2002 |
| The Catholic Church in the Diocese of Ardagh : 1650-1870 | Kelly, James, 1959- | Article in Book | | 1991 |
| The Catholic church in the present world | Ehler, Sidney Z. | Article in Journal | | 1962 |
| The Catholic Church in Ulster under the plantation, 1609-42 | Mac Cuarta, Brian | Article in Book | | 2012 |
| The Catholic church in Wexford town, 1800-58 | Glynn, Jarlath | Article in Journal | | 1984 |
| The Catholic church since the Reformation | Kelleher, Thomas | Article in Book | | 1994 |
| The Catholic Church's Irishmen in Rome: the correspondence of Paul Cullen and Tobias Kirby | Orschel, Vera | Article in Journal | | 2008 |
| The Catholic church, and the writing of the 1937 constitution | Keogh, DermotMcCarthy, Andrew | Article in Journal | | 2005 |
| The Catholic church, clergy and religion in the novels of Canon Sheehan | Fleischmann, Ruth | Article in Journal | | 2002 |
| The Catholic Church, Ireland and the British Empire, 1800-1921 | Rafferty, Oliver P. | Article in Journal | | 2011 |
| The Catholic Church, minority rights, and the founding of the Northern Irish state | Harris, Mary N. | Article in Book | | 1993 |
| The Catholic Church, the Holy See and the 1916 Rising | Keogh, Dermot | Article in Book | | 2007 |
| The Catholic Church, the Irish mission and the Irish language in the eighteenth century | Mac Murchaidh, Ciarán | Article in Book | | 2012 |
| The catholic clergy and popular politics in the dioceses of Cashel and Emly, 1823-48 | McGrath, Thomas G. | Thesis | | 1980 |
| The Catholic clergy and the great famine | O'Neill, Thomas Patrick | Article in Journal | | 1956 |
| The Catholic clergy and the independence movement | Ó Fiaich, Tomás | Article in Journal | | 1970 |
| The Catholic clergy and the social question in Ireland, 1891-1916 | MacMahon, Joseph A. | Article in Journal | | 1981 |
| The catholic clergy in Ireland, 1820-45 | Cahill, Brid | Thesis | | 1975 |
| The Catholic community in eighteenth century county Wexford | Whelan, Kevin | Article in Book | | 1999 |
| The Catholic community in eighteenth-century county Wexford | Whelan, Kevin | Article in Book | | 1990 |
| The Catholic community in Hamilton c.1800-1914 | Mitchell, Martin J. | Article in Book | | 1995 |
| The catholic community in the nineteenth century | Corish, Patrick J. | Article in Journal | | 1983 |
| The catholic community in the seventeenth and eighteenth centuries | Corish, Patrick J. | Monograph or Collective Volume | Helicon | 1981 |
| The Catholic Community in the Seventeenth and Eighteenth Centuries | Corish, Patrick J. | Monograph or Collective Volume | Ulster Historical Foundation | 2021 |
| The Catholic community of Belfast, 1850-1940 | Hepburn, Anthony C. | Article in Book | | 1992 |
| The Catholic Confederacy, 1642-9: an Irish state at war | Lenihan, Pádraig | Thesis | | 1995 |
| The Catholic Convention and Anglo-Irish politics, 1791-3 | O'Flaherty, E. | Article in Journal | | 1985 |
| The Catholic counterculture in America, 1933-1962 | Fisher, James | Monograph or Collective Volume | University of North Carolina | 1989 |
| The Catholic Directory for 1821 | Cunningham, P. | Article in Journal | | 1960 |
| The Catholic emancipation movement in the county of Donegal | MacDonagh, J. C. T. | Article in Journal | | 1957 |
| The Catholic hierarchy and education, 1898-1908 | Wall, Patrick | Article in Journal | | 1981 |
| The Catholic hierarchy and the Irish university question, 1880-1908 | Pašeta, Senia | Article in Journal | | 2000 |
| The Catholic immigrant woman in urban America | Nolan Janet A. | Article in Journal | | 1992 |
| The Catholic interest in Irish politics in the reign of Charles II | Creighton, Margaret Anne | Thesis | | 2000 |
| The Catholic Irish and wealth in Glasgow | Aspinwall, Bernard | Article in Book | | 1991 |
| The Catholic Irish in Scotland : in search of identity | Gallagher, Tom | Article in Book | | 1991 |
| The Catholic isles of Scotland : The Catholic church in the Hebrides, 1560-1760 | Campbell, John L. | Article in Journal | | 1964 |
| The Catholic Library comes of age : 1922-1943 | Brown, Stephen | Monograph or Collective Volume | Central Catholic Library | 1943 |
| The Catholic literary revival in American, 1920-1960 | Sparr, Arnold | Monograph or Collective Volume | University of Wisconsin Press | 1985 |
| The Catholic middle classes in pre-Famine Cork | O'Brien, John B. | Monograph or Collective Volume | National University of Ireland | 1980 |
| The Catholic minority after the Americanist controversy, 1899-1917 - a survey | McAvoy, T. T. | Article in Journal | | 1959 |
| The Catholic Moment | Devlin, Eoin | Article in Book | Oxford University Press | 2023 |
| The Catholic parish churches of Cork | Cahalane, P. | Article in Journal | | 1943 |
| The Catholic parish of Bovevagh, Diocese of Derry | Donnelly, Philip | Article in Journal | | 2002 |
| The Catholic parish, the Catholic chapel and village development in Ireland | Whelan, Kevin | Article in Journal | | 1983 |
| The Catholic parishes in the Barony of Cooley | O'Sullivan, Harold | Article in Journal | | 2015 |
| The Catholic predicament in ‘Northern Ireland’: volume two. Resurgence 1969-2016 | Walsh, Pat, 1961- | Monograph or Collective Volume | Belfast Historical & Educational Society | 2016 |
| The Catholic press and nativism, 1840-60 | Heuston, R. F. V. | Monograph or Collective Volume | [s.n.] | 1976 |
| The Catholic press and nativism, 1840-60 | Hueston, Robert Francis | Monograph or Collective Volume | Arno P. | 1976 |
| The Catholic press in Munster in the eighteenth century | Fenning, Hugh | Article in Book | | 1996 |
| The Catholic priesthood of South Australia, 1844-1915 | Schumann, Ruth | Article in Journal | | 1990 |
| The Catholic question and the monarchy, 1827–1829 | Machin, George Ian Thom | Article in Journal | | 1997 |
| The Catholic question in English politics, 1820 to 1830 | Machin, George Ian Thom | Monograph or Collective Volume | | 1964 |
| The Catholic question in English politics, 1820 to 1830 | Mackin, G. I. T. | Monograph or Collective Volume | Clarendon Press | 1964 |
| The Catholic question in Ireland and England, 1798-1822 | MacDermot, Brian | Monograph or Collective Volume | [s.n.] | 1988 |
| The Catholic question in Ireland and England, 1798-1822 : the papers of Denys Scully | McDermott, BrianScully, Denys | Monograph or Collective Volume | Irish Academic Press | 1988 |
| The catholic question in Ireland, 1774-1793 | O'Flaherty, Eamon | Thesis | | 1981 |
| The Catholic question in the eighteenth century | Bartlett, Thomas | Article in Journal | | 1993 |
| The Catholic question, 1801-1812 | Connolly, Sean J. | Article in Book | | 1989 |
| The Catholic Registers of Killea and Crooke, Co. Waterford | | Article in Journal | | 2013 |
| The Catholic rent of 1829 | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1942 |
| The Catholic Studderts of Clonderlaw | Faulkner, Ivor J. | Article in Journal | | 2002 |
| The Catholic University of Ireland | Wall, Thomas | Article in Journal | | 1954 |
| The Catholic University of Ireland: financial contributions from the diocese of Waterford and Lismore | Hearne, John M. | Article in Journal | | 2016 |
| The Catholic University school of medicine | Doolin, William | Article in Book | | 1954 |
| The Catholic Workers' College Dublin : a personal history | McKenna, Liam, SJSeery, Aidan | Article in Journal | | 2014 |
| The Catholics and the Union | Geoghegan, Patrick M. | Article in Journal | | 2000 |
| The Catholics of Galway 1708-13: a commentary on a report by Don Giovanni Donato Mezzafalce | Mitchell,James | Article in Journal | | 2009 |
| The Catholics of the towns and the quarterage dispute in 18th century Ireland | MacGeehin, Maureen | Article in Journal | | 1952 |
| The Catholics of Ulster : a history | Elliott, Marianne | Monograph or Collective Volume | Allen Lane | 2000 |
| The Catholics, the Irish delinquent and the origins of reformatory schools in nineteenth century England and Scotland | Stack, John A. | Article in Journal | | 1997 |
| The Celtic cross : a collection of fifteen hundred years of devotion by Irish churchmen | Jackson, Robert Wyse | Monograph or Collective Volume | A.P.C.K. | 1954 |
| The centenary of St. Mel's cathedral 1840-1940 | Masterson, M. J. | Article in Journal | | 1940 |
| The centenary of the Pioneer Total Abstinence Association of the Sacred Heart | O'Hare, P. J. | Article in Journal | | 1999 |
| The challenge of Fr John Sullivan, S. J. | Savage, Roland | Article in Journal | | 1946 |
| The Challenge of the Irish Catholic Community in Nineteenth-Century Montreal | Olson, SherryThornton, Patricia | Article in Journal | | 2002 |
| The challenges facing the promoters of Catholic education in Dungannon during the 19th and early 20th centuries | McLoughlin, Michael | Article in Journal | | 2017 |
| The change of religion | MacCulloch, Diarmaid | Article in Book | | 2001 |
| The changing face of Catholic Ireland | Fennell, Desmond | Monograph or Collective Volume | Chapman | 1968 |
| The changing fortunes of the Butlers of Munphin, county Wexford | Butler, Barbara | Article in Journal | | 2014 |
| The chantries in the Irish Reformation; the case of St Anne's Guild, Dublin, 1550-1630 | Lennon, Colm | Article in Book | | 1990 |
| The chapel at Castletown. One of two chapels attached tp private residences in Ireland | Monahan, Amy | Article in Journal | | 2004 |
| The chapel school | Paterson, T. G. F. | Article in Book | | 2013 |
| The chaplain in the war trenches. In memoriam : Fr Willie Doyle, SJ, Dalkeyman, 1873-1917 | Quinn, T. | Article in Journal | | 1995 |
| The Chevers family of Monkstown and Killyan | Cannon, Séamus | Article in Journal | | 2018 |
| The children, the ITGWU, and the archbishop | Nevin, Donal | Article in Book | | 1998 |
| The Chinese batch : the Maynooth mission to China, origins, 1911-1920 | Smyth, Bernard T. | Monograph or Collective Volume | Four Courts | 1994 |
| The choosing of Oliver Kelly for the See of Tuam, 1809-15 | Coen, Martin | Article in Journal | | 1978 |
| The Christian Brothers and the second reformation in Ireland | Keogh, Dáire | Article in Journal | | 2005 |
| The Christian Brothers in Borris, 1865-78 | Brady, Breda | Article in Journal | | 1986 |
| The Christian Brothers in Nenagh | G., J. S. | Article in Journal | | 1939 |
| The Christian Brothers in New Ross, first century, 1849-1949 | Donovan, Patrick | Monograph or Collective Volume | The People Newspaper | 1952 |
| The Christian Brothers in Thurles | Ó Dúgáin, Seán | Article in Book | | 1989 |
| The church and change | Fisher, Desmond | Article in Book | | 1986 |
| The church and Fenianism | McCartney, Donal | Article in Journal | | 1967 |
| The Church and Fr John Murphy of Boolavogue 1753-1798 | Furlong, Nicholas | Article in Book | | 1997 |
| The church and Irish nationalism | Corish, Patrick J. | Article in Journal | | 1957 |
| The church and Northern Ireland | Hogan, Edmund | Article in Journal | | 1980 |
| The church and the artist : practice and patronage, 1922-45 | Bhreathnach-Lynch, Síghle | Article in Journal | | 1991 |
| The Church and the Easter Rising | Rafferty, Oliver P. | Article in Journal | | 2016 |
| The church and the pill : Irish and Australian debates of the 1960s | Noone, Val | Article in Book | | 1996 |
| The church in contemporary Ireland | Blanchard, Jean | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| The church in Dublin : 1940-1965 | Burke Savage, Roland | Article in Journal | | 1965 |
| The church in education - second thoughts | Comiskey, Brendan | Article in Book | | 1990 |
| The Church in England and Wales: An Historical Overview, | Bullivant, Stephen | Article in Book | Oxford University Press | 2023 |
| The church in Hawaii | Kelly, Charlotte | Article in Journal | | 1948 |
| The Church in nineteenth century Louth | Murtagh, Michael | Article in Journal | | 2020 |
| The church in the catacombs | Keogh, Dáire | Article in Book | | 2012 |
| The church militant : the Irish in Birkenhead | Boyle, C. J. | Article in Book | | 2000 |
| The church of Clonroche | McDonald, Tom | Article in Journal | | 2006 |
| The Church of Ireland : a history | Milne, Kenneth | Monograph or Collective Volume | A.P.C.K. | 1966 |
| The Church of Ireland and the native Irish population in plantation Ulster | Ó hAnnracháin, Tadhg | Monograph or Collective Volume | University College Dublin | 2010 |
| The Church of Ireland in Eire since 1922 : a study of the assimilation of an ethno-religious group | Bowen, Kurt | Thesis | | |
| The Church of Ireland in the age of Catholic Emancipation | Brynn, Edward | Monograph or Collective Volume | Garland | 1982 |
| The Church of the Immaculate Conception, Barefield. The stained glass windows. The people of Barefield and friends abroad | Kearns, Mary | Article in Journal | | 2009 |
| The Church of the Sacred Heart, Donnybrook : 150th anniversary | Pegum, Colette | Monograph or Collective Volume | Donnybrook Parish | 2016 |
| The church on the hill : the story of a parish : St Thérese, Mount Merrion, Co. Dublin | | Monograph or Collective Volume | Parish of St Thérese | 2000 |
| The Church since emancipation : Church building | Kennedy, T. P. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Church reorganization | Cunningham, T. P. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Ecclesiastical learning | Corkery, John | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Church since emancipation : Epilogue : Modern Ireland | McKevitt, Peter | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The church under the penal code | Brady, John, d.1963Corish, Patrick J. | Article in Book | | 1968 |
| The church under the penal code | Brady, John, d.1963Corish, Patrick J. | Monograph or Collective Volume | Gill | 1971 |
| The church upon the hill : 1892-1992 | O'Loughlin, Joe | Monograph or Collective Volume | [s.n.] | 1992 |
| The church, education and control of the state in Ireland | Ryan, Patricia Twomey | Article in Journal | | 1987 |
| The Church, the State and the Fenian threat, 1861-75 | Rafferty, Oliver P. | Thesis | | |
| The church, the state and the women's movement in Northern Ireland | McWilliams, Monica | Article in Book | | 1993 |
| The churches and schools of Ashford and Glenealy Parish | | Article in Journal | | 2009 |
| The churches and society | Loughlin, James | Article in Journal | | 1989 |
| The churches of the archdiocese of Tuam | Waldron, Kieran | Article in Journal | | 1998 |
| The city and the church : catholic beginnings in Newark, 1840-1870 | Ralph, Raymond M. | Article in Journal | | 1978 |
| The civil rights crisis, 1962-9 | Corbett, Robin | Article in Book | | 1985 |
| The clergy and the Connacht rebellion | Mulloy, Sheila | Article in Book | | 1997 |
| The clergy in Carlow during the 1798 insurrection | McKenna, Dermot | Article in Journal | | 1998 |
| The Clergy of Down and Connor, 1400–1900 | | Monograph or Collective Volume | Ulster Historical Foundation|The Diocese of Down and Connor | 2020 |
| The clergy of Oliver Plunkett | Mac Phóil, Donnchadha | Article in Journal | | 1984 |
| The clergy of Oliver Plunkett [part 5] | Campbell, Patrick J.Mac Phóil, Donnchadha | Article in Journal | | 1986 |
| The clergy of the diocese of Derry : an index | Daly, EdwardDevlin, Kieran | Monograph or Collective Volume | Four Courts | 1997 |
| The clergy of the Diocese of Derry : an index | Daly, Edward
Devlin, Kieran | Monograph or Collective Volume | Four Courts | 2009 |
| The clergy of the parish of Dunleer | Faulkner, Pádraig | Article in Journal | | 1994 |
| The collected letters of Canon Sheehan of Doneraile 1883-1913 | | Monograph or Collective Volume | Smenos | 2013 |
| The college and the nation | Williams, Thomas | Article in Book | | 1954 |
| The college boys : students of Kilmore Academy and St Patrick's College, Cavan, 1839-2000 | Dunne, RaymondMac Kiernan, Francis J. | Monograph or Collective Volume | Cumann Seanchais Bhreifne | 2008 |
| The colourful Father Ned Lambe | Ní Chonaill, Áine | Article in Journal | | 2013 |
| The commercial aspect of the Irish penal code | Arkins, T. | Article in Journal | | 1912 |
| The communion of saints and Catholic reformation in early seventeenth-century Ireland | McCafferty, John | Article in Book | | 2006 |
| The communities of Ireland and the British state, 1660-1707 | Smyth, Jim | Article in Book | | 1996 |
| The completion of the Tudor conquest and the advance of the Counter-Reformation, 1571-1603 | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Book | | 1976 |
| The Confederacy's fighting chaplain : Father John B. Bannon | Tucker, Phillip Thomas, 1953- | Monograph or Collective Volume | University of Alabama Press | 1992 |
| The Confederate Catholics of Ireland : the personnel of the Confederation, 1642-9 | Cregan, Donal F. | Article in Journal | | 1995 |
| The confederate Catholics of Ireland and popular politics | Darcy, Eamon | Article in Book | | 2019 |
| The Confederates and the Irish wars of the 1640's | Ó Siochrú, Micheál | Article in Book | | 2001 |
| The confederation of Kilkenny and Catholic Europe | Doyle, S. | Article in Journal | | 1957 |
| The confederation of Kilkenny reviewed | Beckett, J. C. (James Camlin) | Article in Book | | 1959 |
| The confessionalisation of Ireland? Assessment of a paradigm | Robinson-Hammerstein, Helga | Article in Journal | | 2001 |
| The Confraternity of Christian Doctrine in Ireland : AD 1775-1835. A chapter of organised Catholic action through popular education | Brenan, Martin | Monograph or Collective Volume | Browne & Nolan | 1934 |
| The Congregation of the Holy Ghost and the evolution of the modern Irish missionary movement | Hogan, Edmund M. | Article in Journal | | 1984 |
| The Connolly Association, the Catholic Church, and anti-communism in Britain and Ireland during the early Cold War | Madden, Gerard | Article in Journal | | 2018 |
| The Constitution of the Dominican Order : 1216-1360 | Galbraith, Georgina Rosalie | Monograph or Collective Volume | Manchester University Press | 1925 |
| The constitutional revolution, 1828-32 | Best, Geoffrey Francis Andrew | Article in Journal | | 1959 |
| The construction of argument : Henry Fitzsimon, John Rider and religious controversy in Dublin, 1599-1614 | Jackson, Brian | Article in Book | | 2005 |
| The construction of Insiders as Outsiders : Catholic accounts of Protestant converts in pre-Famine western Ireland | Hynes, Eugene | Article in Journal | | 2009 |
| The continuity of disaffection in eighteenth-century Ireland | Morley, Vincent | Article in Journal | | 2007 |
| The continuity of the Gaelic tradition in eighteenth-century Ireland | Bromwich, R. S. | Article in Journal | | 1947 |
| The contribution of Irish Franciscans on the Continent in the seventeenth century | Giblin, Cathaldus | Article in Book | | 1981 |
| The contribution of O'Connell | MacDonagh, Oliver | Article in Book | | 1973 |
| The contribution of the Presentation Brothers to Irish education 1960-1998 : a study of a Roman Catholic religious teaching institute in a time of change and transition | Kenneally, Michael Martin | Thesis | | |
| The convent national school in Mallow | Leahy, Melissa | Article in Journal | | 1990 |
| The conversion experience : the case of Fr James O'Farrell, OP, 1785-7 | Kelly, James, 1959- | Article in Book | | 2005 |
| The conversion of Connemara and conflict between Paul Cullen and John MacHale | Moffitt, Miriam | Article in Book | | 2011 |
| The conversion of the Barbarian peoples | Wood, Ian N. | Article in Book | | 1981 |
| The convict priests : Irish Catholicism in early colonial New South Wales | Whitaker, Anne-Maree | Article in Book | | 1996 |
| The Cootehill riot of 1833 | Curran, Daragh | Article in Journal | | 2014 |
| The Corballis/Corbally families of Co. Dublin | Parkinson, Danny | Article in Journal | | 1992 |
| The Corballis/Corbally families of Co. Dublin | Parkinson, Danny | Article in Journal | | 1992 |
| The correspondence of Abbot Smith, O.S.B. | Curran, M. J. | Article in Journal | | 1955 |
| The correspondence of Catherine McAuley, 1818-1841 | McAuley, Catherine | Monograph or Collective Volume | Four Courts | 2004 |
| The Correspondence of Edmund Burke, 1 : April 1774 to June 1768; 2 : July 1768 to June 1774; 3 : July 1774 to June 1778; 4 : July 1778 to June 1782; 5 : July 1782 to June 1789; 6 : July 1789 to Dec. 1791; 7 : Jan. 1792 to Aug. 1794; 8 : Sept. 1794 to Apr. 1796; 9 : May 1796 to July 1797; 10 : Index volume. 10 vols. | | Monograph or Collective Volume | | 1958 |
| The correspondence of William Good SJ and the Jesuit mission in Elizabethan Ireland,1564–c.1570 | DeWitt, Alexander G.McCoog, Thomas M. | Article in Book | | 2022 |
| The Council of Trent and Irish historiography | Lennon, Colm | Article in Book | Brepols | 2017 |
| The Counter-Reformation | Jones, F. M. | Monograph or Collective Volume | Gill | 1967 |
| The counter-reformation and the people of catholic Ireland, 1596-1641 | Bossy, John | Article in Book | | 1971 |
| The Crickstown Barnewalls: Judges of the Pale, 1435-1690 | Kenny, Colum
| Article in Journal | | 2019 |
| The Crimean journals of the Sisters of Mercy, 1854-56 | | Monograph or Collective Volume | Four Courts | 2004 |
| The Cromwellian persecution, and the Catholic Church in Ireland | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1937 |
| The Cromwellian settlement in Balyna parish, 1641-1688 | Hickey, N. M. | Article in Journal | | 1985 |
| The Cross of Saint Patrick : the Catholic Unionist tradition in Ireland | Biggs-Davison, JohnChowdharay-Best, George | Monograph or Collective Volume | The Kensal Press | 1984 |
| The Crown, Empire loyalism and the assimilation of non-British white subjects in the British world : an argument against "ethnic determinism" | Lowry, Donal | Article in Journal | | 2003 |
| The crozier and the Dáil : church and state in Ireland | Cooney, John | Monograph or Collective Volume | Mercier Press | 1986 |
| The crystal fountain : the story of an inner journey | Mackey, Noreen | Monograph or Collective Volume | Columba | 2007 |
| The Cullen era | Leslie, John Randolph (Shane), 1885–1971 | Article in Journal | | 1965 |
| The curious case of the Mayo librarian | Walsh, Pat | Monograph or Collective Volume | Mercier | 2009 |
| The current state of Catholic archives in Ireland : an overview | Sheehy, David C. | Article in Journal | | 1995 |
| The Dady Brothers, Irish music and the power of place in postwar America | Shannon, Christopher | Article in Journal | | 2018 |
| The dark cave and the divine light: verses on the human condition by Giolla Brighde Ó hEódhasa | Ó Corráin, Ailbhe | Monograph or Collective Volume | Novus Press | 2016 |
| The day St Michael's Church was destroyed by fire, Wednesday 28th July 1965 | Clarke, Carl | Article in Journal | | 2007 |
| The de Birminghams, barons of Athenry: a suggested outline lineage, from first to last | Mohr, Paul | Article in Journal | | 2011 |
| The dear old tongue in the heart of Babylon : the Catholic church and the Irish language in South London, 1750-1914. | Royds, John | Article in Journal | | 1992 |
| The death of an Archbishop of Armagh - Hugh McCawell OFM, Rome, 22 September 1626 | McEvoy, James | Article in Journal | | 2009 |
| The decade of the United Irishmen : contemporary accounts 1791-1801 | | Monograph or Collective Volume | Blackstaff Press | 1997 |
| The decoration of Cork cathedral | Pyle, Hilary | Article in Journal | | 1989 |
| The defeat of the church in penal Kinsale | McSwiney, P. | Article in Journal | | 1941 |
| The defence of Protestant Ireland, 1660-1760 | Connolly, Sean J. | Article in Book | | 1996 |
| The Defenders and Lawrence O'Connor | Kelly, Martin J. | Article in Journal | | 1972 |
| The defenders of Clonmel | O'Connell, Philip | Article in Book | | 1950 |
| The delayed development of parochial education among Irish Catholics in Worcester | Meagher, Timothy J. | Article in Journal | | 1984 |
| The demographic impact of Irish immigration on Birmingham Catholicism, 1800-1850 | Champ, J. F. | Article in Book | | 1989 |
| The development of the Catholic church in Derry under the leadership of Bishop Francis Kelly (1849-88) | McLaughlin, Stephen | Article in Book | | 2000 |
| The development of the Scottish catholic community, 1878-1978 | Ross, A. | Article in Journal | | 1978 |
| The devil is a jackass : being the dying works of the autobiographer, William Bernard Ullathorne 1806-1889 | | Monograph or Collective Volume | Gracewing | 1995 |
| The devil was the first protestant : gender and intolerance in Irish Catholic fiction | McDannell, Colleen | Article in Journal | | 1989 |
| The devotional landscape of medieval Irish cultural Catholicism inter hibernicos et inter anglicos, c.1200 - c.1550 | Ryan, Salvador | Article in Book | | 2013 |
| The devotional world of the Irish Catholic exile in early-modern Galicia, 1598-1666 | O'Scea, Ciaran | Article in Book | | 2001 |
| The devout priest & devoted patriot Fr Albert Bibby OFM Cap. 1877-1925 | Kavanagh, Myles | Article in Journal | | 2017 |
| The diary of a country curate : Reverend Henry Murphy in Ennis, 1844-1846 | Ó Murchadha, Ciarán | Article in Journal | | 1990 |
| The diary of Alicia Walshe (Mother Catherine), Religious Sister of Charity | McCabe, Ciarán | Article in Journal | | 2017 |
| The diary of John Mac Laverty, Maynooth student, 1896 - a commentary | O'Neill, Hugh | Article in Journal | | 2013 |
| The Digbys of Drumdaff | Ganly., Jim | Article in Journal | | 2019 |
| The diocesan clergy of Ferns : some reflections | Gahan, John | Article in Book | | 1999 |
| The diocesan school of Armagh & Connor : on the demolition of the building in Ballymena with an antecedent history in Carrickfergus | Dunlop, Eull | Article in Journal | | 1992 |
| The diocese of Clogher in 1714 | | Article in Journal | | 1955 |
| The diocese of Derry in the twentieth century | Bradley, ThomasMadden, Finbar J. | Article in Book | | 2000 |
| The diocese of Elphin 1747-1802 : documents from Roman archives | | Article in Journal | | 1994 |
| The diocese of Ferns and the penal days | Corish, Patrick J. | Article in Journal | | 1970 |
| The diocese of Killaloe in the eighteenth century | Murphy, Ignatius | Monograph or Collective Volume | | 1991 |
| The diocese of Killaloe in the past : items of interest about some parish priests | Clancy, John | Article in Journal | | 1941 |
| The diocese of Killaloe, 1800-1850 | Murphy, Ignatius | Monograph or Collective Volume | Four Courts | 1992 |
| The Diocese of Killaloe, 1800-1850 | Murphy, Ignatius | Monograph or Collective Volume | | 1992 |
| The Diocese of Kilmore 1800-1950 | Gallogly, Daniel | Monograph or Collective Volume | Cumann Seanchais Bhreifne | 1999 |
| The diocese of Kilmore, the Irish college in Paris and Alexander McCabe | Walsh, Micheline | Article in Journal | | 1979 |
| The diocese of Meath under Bishop John Cantwell, 1830-66 | Connell, Paul | Monograph or Collective Volume | Four Courts | 2004 |
| The diocese of Raphoe, 1773-1805 : documents illustrating the history of the diocese from the 'Congressi' volumes in the archives of the 'Propaganda Fide', Rome | | Monograph or Collective Volume | | 1980 |
| The dissolution of the monasteries and the parishes of the western liberty of Meath in the seventeenth century | Masterson, Rory | Article in Book | | 2016 |
| The distribution and segregation of Roman Catholics in Belfast | Jones, Emrys | Article in Journal | | 1956 |
| The domestic and international roles of Irish overseas colleges, 1590-1800 | O'Connor, Thomas | Article in Book | | 2017 |
| The Dominicans in Kerry, 1243-1987 | | Monograph or Collective Volume | Kerry County Library | 1987 |
| The Dominicans of Galway, 1488-1988 | Fenning, Hugh | Article in Book | | 1991 |
| The Doneraile mass-rock | Shine, Michael | Article in Journal | | 2000 |
| The Donnelly murders | Fazakas, Ray | Article in Journal | | 1994 |
| The dream lives forever : the story of St Patrick's Cathedral, New York | Burton, Katherine | Monograph or Collective Volume | Clonmore & Reynolds | 1963 |
| The dream of Bishop Loras : a catholic Iowa | Auge, Thomas E. | Article in Journal | | 1980 |
| The Dreyfus affair in the Irish nationalist press, 1898-1899 | Barrett, Richard | Article in Journal | | 2007 |
| The Dublin / Murphy report : a watershed for Irish Catholicism | | Monograph or Collective Volume | Columba Press | 2010 |
| The Dublin Catholic Mob (1700-1750) | Fagan, Patrick, 1922-2011 | Article in Journal | | 1989 |
| The Dublin Diocesan Archives | Sheehy, David C. | Article in Journal | | 2005 |
| The Dublin Review, (1836-75), its reviewers and a "philosophy of knowledge" | Warren, John | Article in Journal | | 1992 |
| The Dublin University Mission Society, 1890-1905 | Walsh, Oonagh | Article in Journal | | 1995 |
| The Dublin years : 1886 | Thornton, R. K. R. | Article in Book | | 1988 |
| The duel between 'Danny' and Dizzy' | Rodden, John | Article in Journal | | 2022 |
| The duke of Ormond, the Popish Plot and the Exclusion Crisis, 1677-82 | Doyle, Thomas J. | Thesis | | 2004 |
| The duke of Wellington and Catholic emancipation | Machin, George Ian Thom | Article in Journal | | 1963 |
| The duke of Wellington and the Catholic question | Noyce, Karen A. | Article in Book | | 1990 |
| The dust of Maynooth : Fenian funeral as political theater - St. Louis, 1865 | Morgan, Jack | Article in Journal | | 1998 |
| The dynamics of religious difference in contemporary Northern Ireland | Bell, John | Article in Book | | 2013 |
| The dynamics of the clerical-lay relationship in the Roscommon Gaelic League | McMahon, Timothy G.Paton, Monica | Article in Journal | | 2013 |
| The earl of Antrim and Irish aid to Montrose in 1644 | Lowe, John | Article in Journal | | 1960 |
| The earl of Tyrconnell and James II's Irish policy, 1685-1688 | Miller, John | Article in Journal | | 1977 |
| The earl-bishop of Derry and the Catholic question | Noakes, Robert | Article in Journal | | 1940 |
| The early failures of the Irish College Rome, 1628–78 | Binasco, Matteo | Article in Book | | 2018 |
| The early history of the Irish Sisters of Mercy in Connacht | Cryan, Rosarii | Thesis | | 1963 |
| The early Irish Catholic missionaries in Australia | Newman, Jeremiah | Article in Journal | | 1988 |
| The early Irish Catholic schools of Lowell, Massachusetts, 1835-1852 | Walsh, Louis S. | Monograph or Collective Volume | T. A. Whelan | 1901 |
| The early penal days : Clogher under the administration of Hugh MacMahon, (1701-1715) | Jefferies, Henry A. | Article in Book | | 2005 |
| The early response of the Irish Catholic clergy to the co-operative movement | Kennedy, Liam, 1946- | Article in Journal | | 1978 |
| The early response to the Irish Catholic clergy and the co-operative movement | Kennedy, Liam, 1946- | Article in Book | | 1987 |
| The Early Stuarts | Ó hAnnracháin, Tadhg | Article in Book | | 2023 |
| The early-modern Irish college network in Iberia, 1590-1800 | O Connell, Patricia | Article in Book | | 2001 |
| The ecclesiastical history of Laragh parish | Cunningham, Terence | Monograph or Collective Volume | The author | 1984 |
| The ecclesiastical structure, 1714-60 | McCracken, J. L. | Article in Book | | 1986 |
| The educational ideas of Paul Cardinal Cullen | Hayes, C. | Article in Journal | | 1980 |
| The educational views of John McHale. Part I | MacAtasney, Gerard | Article in Journal | | 1994 |
| The elusive quest : reconciliation in Northern Ireland | Porter, Norman | Monograph or Collective Volume | Blackstaff Press | 2003 |
| The embassy in Ireland of Monsignor G. B. Rinuccini, Archbishop of Fermo, in the years 1645-49 | Lenihan, Maurice | Article in Journal | | 1883 |
| The emergence of liberal Catholicism in America | Cross, R. D. | Monograph or Collective Volume | [s.n.] | 1958 |
| The emergence of maritime catholicism, 1781-1830 | Murphy, Terrence | Article in Journal | | 1984 |
| The emergence of the clergy in Borris | Joyce, Tom | Article in Journal | | 2016 |
| The emergence of the Irish Catholic nation, 1750-1850 | Bartlett, Thomas | Article in Book | | 2014 |
| The emergence of the Irish Episcopal Conference 1788-1882 | Murphy, Pádraig | Article in Journal | | 2009 |
| The emergence of the Irish Episcopal Conference 1788-1882 | Murphy, Pádraig | Article in Journal | | 2009 |
| The emerging identity of an Irish military group in the Spanish Netherlands : 1556-1610 | Henry, Gráinne | Article in Book | | 1990 |
| The Encyclopédie in eighteenth-century Ireland | Kennedy, Máire | Article in Journal | | 1996 |
| The End of Disadvantage? The descendants of Irish-Catholic immigrants in modern Scotland since 1945 | Devine, Thomas Martin | Article in Book | | 2008 |
| The end of Gaelic Ulster : a thematic interpretation of events between 1534 and 1610 | Morgan, Hiram | Article in Journal | | 1988 |
| The enduring testimony : St. Mary's Cemetery, Saint John | McDevitt, Mary | Article in Book | | 1988 |
| The English Benedictines in Eighteenth-Century Lorraine | Richard-Maupillier, Frédéric | Article in Book | | 2018 |
| The English catholic press and the home rule bill, 1885-86 | Greene, Thomas R. | Article in Journal | | 1975 |
| The English Catholics, 1850-1950 : essays to commemorate the centenary of the restoration of the hierarchy of England and Wales | NA | Monograph or Collective Volume | NA | 1950 |
| The entring book of Roger Morrice (1677-1691) | Goldie, MarkHarris, TimKnights, MarkMcElligott, Jason, 1972-Morrice, Roger, 1628-1702Spurr, JohnTaylor, Stephen, 1960- | Monograph or Collective Volume | Boydell Press | 2007 |
| The epic of Catholic Boston | Harney, Martin P. | Article in Journal | | 1944 |
| The episcopal succession in Ireland during the first years of Elizabeth's reign | Murphy, N. | Article in Journal | | 1883 |
| The episcopal succession of Killaloe | Clancy, John | Article in Journal | | 1941 |
| The episcopal succession of Killaloe diocese | Gleeson, Dermot F. | Article in Journal | | 1942 |
| The episcopate of Dr Anthony O'Regan - "An t-Easpag briste" - the third bishop of Chicago | Kilgarriff, Kevin | Article in Journal | | 2005 |
| The Esmonde family of Co. Wexfrod and Catholic loyalty | Keogh, RichardMcConnel, James | Article in Book | | 2013 |
| The Eucharistic Congress of 1932 and Irish identity | Holmes, David G. | Article in Journal | | 2000 |
| The Eucharistic Congress, Dublin 1932 | O'Dwyer, Rory | Monograph or Collective Volume | Nonsuch | 2009 |
| The European culture wars in Ireland : the Callan schools affair, 1868-81 | Barr, Colin | Monograph or Collective Volume | University College Dublin | 2010 |
| The evolution of Catholic parishes in Dublin city from the sixteenth to the nineteenth centuries | Ó Fearghail, Conchubhair | Article in Book | | 1992 |
| The evolution of the Catholic parishes in County Wexford [part 1] | Culleton, Edward | Article in Journal | | 2007 |
| The exclusion of Catholics from the legal profession in Ireland, 1537-1829 | Kenny, Colum | Article in Journal | | 1987 |
| The expansion of Irish christianity to 1200; an historiographical study | Ó Briain, Felim | Article in Journal | | 1944 |
| The experience of Irish migrants to Glasgow, Scotland, 1863-1891 : a new way of being Irish | McBride, Terence | Monograph or Collective Volume | Edwin Mellen Press | 2006 |
| The failed attempts to implement a native rector at the Irish College in Rome, 1773–98 | | Article in Journal | | 2014 |
| The failure of Newman's Catholic University of Ireland | Barr, Colin | Article in Journal | | 2001 |
| The failure of the Irish revolution - and its success|Comments on the foregoing article | Fennell, Desmond | Article in Journal | | 1964 |
| The failure of the reformation in sixteenth-century Meath | Scott, Brendan | Article in Journal | | 2006 |
| The faithful Fathers McEnroe in and near Pennsylvania, 1880s-1950s | Buffington, Rosemary | Article in Journal | | 2021 |
| The fall and return of John Macmoyer | Ó Fiaich, Tomás | Article in Journal | | 1958 |
| The Fall of the British Monarchies, 1637-1642 | Russell, Conrad Sebastian Robert, 5th earl Russell, 1937-2004 | Monograph or Collective Volume | NA | 1991 |
| The fall of the Catholic cosmopolitan : Charles O'Conor and the Catholic debate on the Act of Union | Livesey, James | Article in Journal | | 2013 |
| The famine and the Catholic church : a review article | McGrath, Thomas | Article in Journal | | 1997 |
| The famine and the Church in England | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| The famine and the development of the Church in Scotland | Handley, J. E. | Article in Journal | | 1947 |
| The fateful split : Catholics and the Royal Ulster Constabulary | Ryder, Chris | Monograph or Collective Volume | Methuen | 2004 |
| The Fennelly brothers and the Maynooth mission to India | Ní Chearbhaill, Máire | Article in Book | | 2015 |
| The fifth Earl Fitzwilliam and the School Wars | Gratton, D. J. | Article in Journal | | 2002 |
| The fighting Irish of Toronto : sport and Irish catholic identity at St. Michael's College, 1906-1916 | Ryan, Dennis P.Wamsley, K. B. | Article in Journal | | 2007 |
| The fighting Irish: historical archaeology of nineteenth-century Catholic immigrant experiences in South Bend, Indiana | Rotman, Deborah L. | Article in Journal | | 2010 |
| The Fingall family link with Douai Abbey Woolhampton, Berkshire, England and Killeen/Dunsany Parish, Co. Meath, Ireland | Carty, Mary Rose | Article in Journal | | 2018 |
| The first Catholic mission to Australia | Anonymous | Article in Journal | | 1996 |
| The first duke : an introduction to the Charles II-charter | Irwin, Liam | Article in Journal | | 1977 |
| The first Loreto sister : Mother Teresa Ball, 1794-1861 | Forristal, Desmond | Monograph or Collective Volume | Dominican | 1994 |
| The first man on the hill: The life and times of Rev. Patrick O'Connell (1850-1923) | O'Brien, Hugh B. | Article in Journal | | 2012 |
| The first national schools of the parish | MacMahon, Bryan | Article in Book | | 2012 |
| The first pilgrims | Quinn, D. B. (David Beers) | Article in Journal | | 1966 |
| The first Rosminians in England and Ireland; Rosminian houses in England | Emery, C. J. | Article in Book | | 1960 |
| The five martyrs of Drogheda | Rice, Gerard | Article in Journal | | 1997 |
| The flight of the earls, 1607 | McCavitt, John | Article in Journal | | 1994 |
| The flowering of the confraternities and sodalities in Ireland, c. 1860-c. 1960 | Kavanagh, RobinLennon, Colm | Article in Book | Columba | 2012 |
| The forgotten labour struggle : the 1911 Wexford lockout | Roche, Kieran S. | Article in Journal | | 2013 |
| The forgotten war : the Catholic church & Biafra (1967-1970) | Staunton, Enda | Article in Journal | | 2000 |
| The formation of the Catholic community in the west of Scotland | Aspinwall, Bernard | Article in Journal | | 1982 |
| The formation of the modern Catholic church in the diocese of Kilmore, 1580-1880 | Kelly, James, 1959- | Article in Book | | 1995 |
| The formation of the Old English élite in Ireland | Canny, Nicholas P. | Monograph or Collective Volume | National University of Ireland | 1975 |
| The formation of the parishes of Killala Diocese | Heffron, Liam Alex | Article in Journal | | 2018 |
| The formative development of the Dominican and Franciscan orders in Ireland, with special reference to the Observant reform | Flanagan, J.G., Rev. | Thesis | | 1947 |
| The Fottrell papers, 1721-39 : an edition of the papers found on the person of Fr. John Fottrell, Provincial of the Dominicans in Ireland at his arrest | Fenning, HughFottrell, John | Monograph or Collective Volume | Public Record Office of Northern Ireland | 1980 |
| The foundation of Carlow College | Duggan, Maura | Article in Journal | | 1972 |
| The foundation of Christianity in the parish of Kilkeevan (Castlerea) | Wall, Oliver | Article in Journal | | 1994 |
| The foundation of the Geraldine College of the Blessed Virgin Mary, Maynooth, 1518 | Lyons, Mary Ann | Article in Journal | | 1994 |
| The foundations of the Catholic Church in English-speaking New Brunswick | Toner, P. M. | Article in Book | | 1988 |
| The fourth centenary of the arrival of the first Jesuits in Ireland | Corboy, James | Article in Journal | | 1943 |
| The Franciscan Brothers in Westport | Thomas, Conal | Article in Journal | | 1999 |
| The Franciscan College Multyfarnham 1897-1997 : centenary lists | Fennessy, Ignatius | Article in Journal | | 1998 |
| The Franciscan friary at Kildare | Fennessy, Ignatius | Article in Journal | | 1996 |
| The Franciscan house in Thurles | Conlan, Patrick, 1940- | Article in Book | | 1989 |
| The Franciscan house in Thurles | Conlon, Patrick | Article in Journal | | 1977 |
| The Franciscan houses of Thomond in 1616 | Ryan, Martin | Article in Journal | | 1967 |
| The Franciscan Library Killiney: the journey of a valuable historical repository | Bhreathnach, Edel | Article in Journal | | 2007 |
| The Franciscan noviciate in Wexford, 1805-22 | Conlan, Patrick | Article in Journal | | 2010 |
| The Franciscan petition lists : diocese of Armagh 1670-71 | Campbell, Patrick J. | Article in Journal | | 1992 |
| The Franciscan Third Order Regular in Donegal | Conlan, Patrick, 1940- | Article in Journal | | 1997 |
| The Franciscans in Clonmel : 1269-1998 | Conlan, Patrick, 1940- | Article in Journal | | 1999 |
| The Franciscans in County Wexford | Conlan, Patrick, 1940- | Article in Journal | | 2006 |
| The Fransciscans in Antrim | Conlan, Pat | Article in Journal | | 2013 |
| The French connection with Maynooth College, 1795-1855 | Turner, Michael | Article in Journal | | 1981 |
| The French disease : the Catholic Church and Irish radicalism, 1790-1800 | Keogh, Dáire | Monograph or Collective Volume | Four Courts | 1993 |
| The French exiled clergy in the British Isles after 1789. An historical introduction and working list | Bellenger, Dominic Aidan | Monograph or Collective Volume | | 1986 |
| The French revolution and the Irish regiments in France | Scott, Sam | Article in Book | | 1990 |
| The Friars Minor and the Honan Hostel, University College, Cork | Egan, Bartholomew, OFM | Article in Journal | | 1980 |
| The future returns : a journey with Columba and Augustine of Canterbury | McMaster, Johnston | Monograph or Collective Volume | Corrymeela Press | 1997 |
| The Gaelic response to conquest | Ó Buachalla, Breandán | Article in Book | | 1998 |
| The Gangs of Manchester : The Story of the Scuttlers, Britain's First Youth Cult | Davies, Andrew, 1962 Feb. 8- | Monograph or Collective Volume | Milo Books | 2008 |
| The general : his life and times | Greensmyth, Harry | Monograph or Collective Volume | Harry Greensmyth | 2007 |
| The general election of 1892 : the Catholic clergy and the defeat of the Parnellites | Woods, C. J. (Christopher John) | Article in Book | | 1980 |
| The genesis of convent foundations and their institutions in Ulster, 1840-1920 | O'Connell, Marie | Article in Book | | 1994 |
| The genius of Fr Browne | | Monograph or Collective Volume | Wolfhound Press | 1990 |
| The gentlemen O'Reillys of the old family | Curran, Mary T.
| Article in Journal | | 2017 |
| The geography of poverty: Dublin, 1850-1900: the social mission of the [Catholic] church with particular reference to Margaret Aylward and co-workers | Prunty, Jacinta Lucy | Thesis | | 1993 |
| The geopolitics of the Irish-Catholic parish in nineteenth-century Montreal | Trigger, Rosalyn | Article in Journal | | 2001 |
| The Geraldine war - rebellion of crusade? | Mac Curtain, Benvenuta | Article in Journal | | 1965 |
| The Geraldine war : rebellion or crusade? | Mac Curtain, Benvenuta | Article in Journal | | 1964 |
| The golden age of the Irish Franciscans, 1615-50 | Mooney, Canice | Article in Book | | 1944 |
| The good old priests of the olden parish of Ida | O'Farrell, Ed | Article in Book | | 2001 |
| The Gosfords and the Mullaghbrack Catholics : an ecumenical relationship? | McGlennon, C. F. | Article in Journal | | 2003 |
| The Gothic revival in the Diocese of Armagh and the influence of John Murray, architect and surveyor | Geraghty, Peter J. | Article in Journal | | 2021 |
| The Graces, 1625-41 | Clarke, Aidan | Monograph or Collective Volume | | 1968 |
| The grammar school of Thomas Leverous and the town of Adare | Spillane, Milo | Article in Journal | | 2018 |
| The Great Famine and beyond : Irish migrants in Britain in the nineteenth and twentieth centuries | | Monograph or Collective Volume | Irish Academic Press | 2000 |
| The great famine and clergy in Galway city | O'Dowd, Peadar | Article in Journal | | 1995 |
| The great Father Tom Burke | Cassidy, James F. (James Francis), b. 1890 | Monograph or Collective Volume | Gill | 1947 |
| The great hunger and Irish Catholicism | Hynes, Eugene | Article in Journal | | 1978 |
| The Great War: Irish Australian perspectives | Cusack, Danny | Article in Journal | | 2016 |
| The Grenvilles' eminence grise : the Reverend Charles O'Conor and the latter days of Anglo-Gallicanism | Sack, James J. | Article in Journal | | 1979 |
| The growing demand for Catholic education in the eighteenth century, leading to the establishment of St. Patrick's, Maynooth in 1795 | O'Connor, R. | Article in Journal | | 1981 |
| The growth and origin of the diocese of Meath | Brady, John, d.1963 | Article in Journal | | 1949 |
| The growth of devotion to the Sacred Heart in Ireland | Burke-Savage, Roland | Article in Journal | | 1968 |
| The growth of sectarianism in Ireland in the later eighteenth century | O'Callaghan, Nora F. | Thesis | | 1975 |
| The Hallinan family of Quartertown | Forde, Robert | Article in Journal | | 1991 |
| The Hamilton High School premises : part 3 : seven county inspectors of constabulary | Hamilton, Pádraig | Article in Journal | | 1990 |
| The Hamilton High School premises, Bandon : part 2 : twin pillars of the establishment : Revd. William Sullivan B.A. (1775-1836) and Alexander Swanton J. P. (1809-1882) and the other residents of no. 2 Devonshire Square 1812-1848 | Hamilton, Pádraig | Article in Journal | | 1989 |
| The Hamilton High School premises, Bandon : part 4 | Hamilton, Pádraig | Article in Journal | | 1991 |
| The Hamilton High School premises, Bandon. Part 5 : “Governor” Thomas Biggs (c.1750-1824) woollen proprietor, miller and provost | Hamilton, Pádraig | Article in Journal | | 1995 |
| The Hamilton High School premises, Bandon. Part 1 : the residents of no. 1 Devonshire Square | Hamilton, Pádraig | Article in Journal | | 1988 |
| The Harold-Barrys of Doneraile, brothers, cousins, nephew and uncle, in arms | Linehan, Barry | Article in Journal | | 2016 |
| The Hartlib circle and the cult and culture of improvement in Ireland | Barnard, T. C. (Toby Christopher) | Article in Book | | 1994 |
| The hereditary bondsman : Daniel O'Connell 1775-1829 | MacDonagh, Oliver | Monograph or Collective Volume | Weidenfeld and Nicolson | 1988 |
| The hidden Gaeltacht in Old New York : nineteenth-century preaching in the Irish language | Ridge, John T. | Article in Journal | | 1991 |
| The hidden hand of God : the life of Veronica O'Brien and our common apostolate | Suenens, Léon Joseph | Monograph or Collective Volume | Vertias | 1994 |
| The historian and the archivist | McCartney, Donal | Article in Journal | | 1989 |
| The historic Irish, Scots and English Colleges of Louvain and the Irish presence in other colleges of the University | McEvoy, James | Article in Journal | | 2010 |
| The historical and social ground of religion and conflict in modern Ireland : a critical, holistic approach | Fulton, John | Thesis | | |
| The historical background | Darby, John | Article in Book | | 1983 |
| The historical dimension of Irish Catholicism | Larkin, Emmet | Monograph or Collective Volume | [s.n.] | 1984 |
| The historical links of Drum south Roscommon with the 31st International Eucharist Congress, Dublin 1932 | Drum Heritage Group | Monograph or Collective Volume | Drum Heritage Group | 2002 |
| The Historical Manuscripts Commission and the Franciscan manuscripts | Gillespie, Raymond | Article in Journal | | 2007 |
| The historical writings of Brendan Jennings, O.F.M. (1883-1970) | Lynch, Anthony | Article in Book | | 1995 |
| The historical writings of Felim Ó Briain, O.F.M. (1895-1957) | Lynch, Anthony | Article in Book | | 1995 |
| The historical writings of Patrick J. Corish to 1989 | | Article in Book | | 1990 |
| The historiography of the papers of Bishop James Doyle OSB, 1786-1834, in the Kildare and Leighlin diocesan archives | McGrath, T. G. | Article in Journal | | 1988 |
| The history and antiquities of the diocese of Ossory | Carrigan, William, 1860-1924 | Monograph or Collective Volume | [s.n.] | 1981 |
| The history and antiquities of the diocese of Ossory. 1:Introduction and Extent, Deaneries, Bishops, Chapter and Colleges of the diocese of Ossory; 2 : Northern Deanery of Ossory Diocese; 3 : The Middle Deanery, including the Cathedral City of the Diocese of Ossory; 4 : The Southern Deanery of the Diocese of Ossory. 4 vols. | Carrigan, William, 1860-1924 | Monograph or Collective Volume | | 1905 |
| The history of the construction of Tuam Cathedral | Higgins, Patrick | Article in Journal | | 2010 |
| The history of the Irish Presentation Sisters in the twentieth century : from autonomy to union | O'Reilly, Louise | Thesis | | 2009 |
| The history of the suppressed Irish College, Rome, part I: 1798-1808 | Korten, Christopher | Article in Journal | | 2014 |
| The Holy See and Ireland, 1780-1802 | O'Donoghue, P. | Article in Journal | | 1976 |
| The Holy See and the Irish movement for the repeal of the union with England, 1829-47 | Broderick, J. F. | Monograph or Collective Volume | Universitas Gregoriana | 1951 |
| The Holy See and the Irish National Schools | Barry, P. C. | Article in Journal | | 1959 |
| The holy wells of County Louth | Conlon, Larry | Article in Journal | | 1999 |
| The holy wells of County Wicklow : traditions and legends | Lynch, Geraldine | Article in Book | | 1994 |
| The Home Rule Bill, map showing distribution of the non-Catholic population | Anonymous | Article in Journal | | 1912 |
| The Honan chapel, University College, Cork | O'Kelly, M. J. (Michael Joseph) | Monograph or Collective Volume | Cork University Press | 1967 |
| The Honourable Robert Edward Clifford (fl. 1788-1817) : officer in Dillon's regiment | Ravenhill, William | Article in Journal | | 1991 |
| The house that Harry built : Irish Presentation Brothers in Trinidad | Feheny, John M. | Article in Book | | 2015 |
| The household of faith | Taves, Ann | Monograph or Collective Volume | # | 1988 |
| The I.H.S. monogram as a symbol of Catholic resistance in seventeenth-century Ireland | Donnelly, Colm J. | Article in Journal | | 2005 |
| The identity of Ulster : the land , the language and the people | Adamson, Ian | Monograph or Collective Volume | Baird | 1982 |
| The identity of Ulster : the land, the language and the people | Adamson, Ian | Monograph or Collective Volume | Pretani Press | 1991 |
| The image of a relationship in blood : Párliament na mBan and Burke's Jacobite politics | O'Donnell, Katherine, 1966- | Article in Journal | | 2000 |
| The image of O'Connell in Australia | O'Farrell, Patrick James | Article in Book | | 1980 |
| The image of O'Connell: a reappraisal | O'Mahony, Edmund Gerard | Thesis | | 1983 |
| The imagining of place : representation and identity in contemporary Ireland | Graham, B. J. (Brian J.) | Article in Book | | 1997 |
| The immigrant alternative : ethnic and sectarian mutuality among the Liverpool Irish during the nineteenth century | Belchem, John | Article in Book | | 1995 |
| The immigrant church : New York's Irish and German Catholics, 1815-1865 | Dolan, Jay P., 1936- | Monograph or Collective Volume | Johns Hopkins University Press | 1975 |
| The impact of British colonialism on Irish Catholiciam and national identity: Repression, reemergence, and divergence | White, Timothy J. | Article in Journal | | 2010 |
| The impact of Daniel O'Connell on the origin and development of the Catholic movement in Germany, 1830-50 | Grogan, Geraldine F. | Thesis | | 1989 |
| The impact of Irish Catholic priests in seventeenth-century Gaelic-speaking Scotland | McInally, Tom | Article in Book | | 2005 |
| The impact of the 1641 rebellion upon England and Wales, 1641-5 | Lindley, Keith | Article in Journal | | 1972 |
| The impact of the anniversary celebrations of 1929 and 1932 on the religious atmosphere in early-independent Ireland | Moffitt, Miriam | Article in Book | | 2016 |
| The impact of the battle of Aughrim (1691) on the Irish Catholic elite | Lenihan, Pádraig | Article in Book | | 2011 |
| The impact of the Irish on the missionary activities of Dominic Barberi, 1840-1849 | Hamer, Dominic Savio | Article in Journal | | 2001 |
| The impact of the Irish on the missionary activities of Dominic Barberi, 1840-1849 | Hamer, Dominic Savio | Article in Journal | | 2001 |
| The impact of the penal laws | Kelly, James, 1959- | Article in Book | | 2000 |
| The Imperial anxieties of a nineteenth-century bigamy case | Gill, Rebecca | Article in Journal | | 2004 |
| The Imperial Irish: Canada's Irish Catholics Fight the Great War, 1914-1918 | McGowan, Mark G. | Monograph or Collective Volume | McGill-Queen's University Press | 2017 |
| The implications of Thomas Wentworth's proposals for a plantation in Connacht and the provincial old English | Duignan, Aoife | Article in Journal | | 2001 |
| The impossible diplomatic mission of Giovanni Battista Rinuccini 1645-1649 | O'Sullivan, T. F. | Article in Journal | | 1993 |
| The income of Catholic priests in pre-Famine Ireland: some evidence from the Diocese of Killaloe | Grace, Daniel | Article in Journal | | 2017 |
| The indictment of Fr. John Preston, Franciscan | | Article in Journal | | 1963 |
| The influence of Catholic nationalism on the legislature of the Irish Free State | Nolan, Michael | Article in Journal | | 1975 |
| The influence of Ireland on the Newfoundland ballad | Kirwin, William | Article in Book | | 1977 |
| The influence of O'Connell on French liberal Catholicism | Rollet, Henri | Article in Book | | 1980 |
| The influence of the Irish Catholic clergy in shaping the religious and political allegiances of Irish Catholics, 1603-41 | Finnegan, David | Article in Book | | 2013 |
| The influence of the Irish on the Catholic church in America in the nineteenth century | Egan, Patrick K. | Monograph or Collective Volume | National University of Ireland | 1968 |
| The Infrastructure of Catholicism | Begadon, Cormac | Article in Book | Oxford University Press | 2023 |
| The inspired life of Fr Patrick O'Grady | O'Grady, Ethna | Article in Journal | | 2016 |
| The Institute of Charity: Rosminians. Their Irish story, 1860-2003 | Bates, Bríd Fahey | Monograph or Collective Volume | Institute of Charity, Dublin | 2003 |
| The institutional churches and the process of reconciliation in Northern Ireland; recent progress in Presbyterian-Roman Catholic relations | Beeman, Josiah HortonMahony, Robert | Article in Book | | 1993 |
| The integral Irish tradition | Ó Floinn, D. | Monograph or Collective Volume | Gill | 1954 |
| The International Eucharistic Congress 1932 | Sobolewski, Peter | Article in Journal | | 2013 |
| The interrogation of Gerald Keating: trouble, tension and treason | Empey, Mark | Article in Journal | | 2024 |
| The inventory of the Franciscan Friary of Kinalehan (1698) | Smith, Keith | Article in Journal | | 2016 |
| The involvement of the Catholic Clergy with the Republican struggle in Carlow from 1913-21 | Joyce, Tom | Article in Journal | | 2016 |
| The Ireland of Edward Cahill (1868-1941): a liberal or a Christian state? | Morrissey, Thomas J. | Article in Journal | | 2017 |
| The Ireland of Edward Cahill, SJ, 1868-1941 : a secular or a Christian state? | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2016 |
| The Irish abroad : Michael Condon in Scotland, 1845-1878 | Aspinwall, Bernard | Article in Book | | 1989 |
| The Irish abroad, 1534-1691 | Silke, John J. | Article in Book | | 1976 |
| The Irish Act of Union, the Catholic question and the collapse of Pitt's ministry: a study in high politics, 1798-1801 | Geoghegan, Patrick Martin | Thesis | | 1997 |
| The Irish adjustment in Montreal | Keep, G. R. C. | Article in Journal | | 1950 |
| The Irish American response to Catholic Emancipation | Moriarty, T. F. | Article in Journal | | 1980 |
| The Irish and Catholic power : an American interpretation | Blanshard, PaulHyde, Harford Montgomery | Monograph or Collective Volume | Verschoyle | 1954 |
| The Irish and the Christian Churches in America | Doyle, David Noel | Article in Book | | 1980 |
| The Irish Augustinians in Australia, 1839-1992 : Australia remembers St. Patrick's College, Rome | Hunt, Thomas | Article in Book | | 1994 |
| The Irish Augustinians in Ecuador, 1977-1992 | O'Connor, Paul G. | Article in Book | | 1994 |
| The Irish Augustinians in England and Scotland, 1539-1992 : the Irish province-restorer of its Anglo-Scottish mother province | Hackett, Michael Benedict | Article in Book | | 1994 |
| The Irish Augustinians in India, 1834-1841 | Clancy, Peter | Article in Book | | 1994 |
| The Irish Augustinians in Kenya, 1991-1992 | Brosnan, Declan T. | Article in Book | | 1994 |
| The Irish Augustinians in Nigeria, 1939-1992 | Hickey, Raymond | Article in Book | | 1994 |
| The Irish Augustinians in North America, 1794-1992 : the Irish Augustinian mission to the United States of America | Schnaubelt, Joseph C. , 1931- | Article in Book | | 1994 |
| The Irish Augustinians in Rome, 1656-1994 and Irish Augustinian missions throughout the world | | Monograph or Collective Volume | Augustinian House of Studies|St Patrick's College | 1994 |
| The Irish barn church | Bradley, John, Rev. | Article in Journal | | 2008 |
| The Irish battalion in the papal army of 1860 | Berkeley, G. F. H. | Monograph or Collective Volume | Talbot Press | 1929 |
| The Irish Battalion of St. Patrick at the defence of Spoleto, September, 1860 | Crean, Cyril P. | Article in Journal | | 1959 |
| The Irish bishops and the conscription issue 1918 | Ó Fiaich, Tomás | Article in Journal | | 1968 |
| The Irish Bishops and the Conscription Issue, 1918 | Ó Fiaich, Tomás | Article in Journal | | 2019 |
| The Irish brigade in the Papal army 1860 | Corkery, Séamus | Article in Journal | | 1990 |
| The Irish Brigade with Montrose | Duggan, Lucy | Article in Journal | | 1958 |
| The Irish Carmelites come to the Bronx | Isacsson, Alfred | Article in Journal | | 1988 |
| The Irish Catholic Benevolent Union | Donohue, Joan Marie | Monograph or Collective Volume | Catholic University of America Press | 1953 |
| The Irish Catholic burial habit | Fenlon, Maria | Article in Book | | 2004 |
| The Irish Catholic Church and the Internet | Maignant, Catherine | Article in Journal | | 2017 |
| The Irish Catholic Church under Charles II : the ‘Popish Plot’ and the martyrdom of Oliver Plunkett | Considère-Charon, Marie-Claire | Article in Journal | | 2013 |
| The Irish Catholic clergy and emigration during the great famine | MacDonagh, Oliver | Article in Journal | | 1947 |
| The Irish Catholic Episcopal Corps, 1657-1829: a prosopographical analysis | Derr, Eric | Thesis | | 2014 |
| The Irish Catholic experience : a historical survey | Corish, Patrick J. | Monograph or Collective Volume | Gill & Macmillan | 1985 |
| The Irish Catholic female religious and the transnationalisation of care : an historical perspective | Yeates, Nicola | Article in Journal | | 2002 |
| The Irish Catholic interest at the London Inns of Court, 1674-1800 | Bergin, John | Article in Journal | | 2009 |
| The Irish Catholic petition of 1805, the diary of Denys Scully | MacDermot, BrianScully, Denys | Monograph or Collective Volume | Irish Academic Press | 1992 |
| The Irish Catholic Press in Toronto 1887-1892 : the years of transition | Stortz, Gerald J. | Article in Journal | | 1984 |
| The Irish Catholic press in Toronto, 1874-1887 | Stortz, Gerald J. | Article in Journal | | 1980 |
| The Irish Catholic schooling of James T. Farrell, 1914-23 | Ebest, Ron | Article in Journal | | 1996 |
| The Irish Catholic secular clergy, 1850-1900 | Bane, Liam | Thesis | | 1994 |
| The Irish Catholic, Halifax's first minority group | Punch, Terence M. | Article in Journal | | 1980 |
| The Irish catholics and the legislative union | Burke, T.A., Rev. | Thesis | | 1942-1943 |
| The Irish Christian Brothers in England, 1825-80 | Gillespie, W.J. | Thesis | | 1976 |
| The Irish church and taxation in the fourteenth century | Lydon, James F. | Article in Journal | | 1964 |
| The Irish church and the papacy | Corish, Patrick J. | Article in Journal | | 1979 |
| The Irish church in the sixteenth century | Mooney, Canice | Article in Journal | | 1963 |
| The Irish clergy and Archbishop Manning's apostolic visitation of the western district of Scotland, 1867 | McClelland, Vincent Alan | Article in Journal | | 1967 |
| The Irish clergy of the diocese of Bordeaux during the revolution | Loupès, Philippe | Article in Book | | 1990 |
| The Irish clergyman | McAvoy, T. T. | Article in Book | | 1970 |
| The Irish clergyman in the United States | McAvoy, Thomas T. | Article in Journal | | 1964 |
| The Irish College Antwerp | Nilis, Jeroen | Article in Journal | | 1996 |
| The Irish College at Alcalá de Henares 1649-1785 | O Connell, Patricia | Monograph or Collective Volume | Four Courts | 1997 |
| The Irish college at Salamanca | Henchy, Monica | Article in Book | | 2007 |
| The Irish college at Salamanca | Henchy, Monica | Article in Journal | | 1981 |
| The Irish college at Salamanca | Corboy, James | Article in Journal | | 1944 |
| The Irish College at Santiago de Compostela : two documents about its early days | Davies, Gareth | Article in Book | | 1987 |
| The Irish College at Santiago de Compostela, 1605-1769 | O Connell, Patricia | Monograph or Collective Volume | Four Courts | 2007 |
| The Irish college at Toulouse | Walsh, T. J. (Timothy J.) | Article in Journal | | 1954 |
| The Irish College of Alcala de Henares | Walsh, Micheline Kerney | Article in Journal | | 1985 |
| The Irish College of Bordeaux : some Cork association with the Gironde | Walsh, T. J. (Timothy J.) | Article in Journal | | 1947 |
| The Irish College of Madrid | Walsh, Micheline Kerney | Article in Journal | | 1993 |
| The Irish College Rome | Hanly, John J. | Monograph or Collective Volume | Eason | 1989 |
| The Irish College under the Jesuits (1635-1772) | Devitt, Patrick | Article in Journal | | 1968 |
| The Irish College, Rome and the appointment of Irish bishops to the United States 1830-1851 | Barr, Colin | Article in Book | | 2008 |
| The Irish College, Santiago de Compostela : 1605-1767 | O Connell, Patricia | Article in Journal | | 1996 |
| The Irish College, Seville | Silke, John J. | Article in Journal | | 1961 |
| The Irish colleges at Douai and Antwerp | | Article in Journal | | 1947 |
| The Irish colleges in Europe and the counter-reformation | Brady, John, d.1963 | Article in Journal | | 1957 |
| The Irish colleges in Spain | Henchy, Monica | Article in Journal | | 1999 |
| The Irish colleges in the Low Countries | | Article in Journal | | 1949 |
| The Irish colleges of Bordeaux and Lille | Walshe, T., Rev. | Thesis | | 1952 |
| The Irish colleges on the continent | Giblin, Cathaldus | Article in Book | | 1978 |
| The Irish colleges on the continent : Their origin and history | O'Boyle, James | Monograph or Collective Volume | | 1935 |
| The Irish community in eighteenth-century Cadiz | Fannin, Samuel | Article in Book | | 2003 |
| The Irish community in Greenock in the 19th century | Lobban, R. D. | Article in Journal | | 1971 |
| The Irish congregations in nineteenth-century Montreal | Keep, G. R. C. | Article in Journal | | 1950 |
| The Irish continental college movement : the colleges at Bordeaux, Toulouse and Lille | Walsh, T. J. (Timothy J.) | Monograph or Collective Volume | Golden Eagle Books | 1973 |
| The Irish continental colleges | Swords, Liam | Article in Journal | | 1982 |
| The Irish contribution to the organization of the catholic church in South Africa in the nineteenth century | Doyle, J., Rev. | Thesis | | 1963 |
| The Irish Convention in Trinity College | Connell, Joseph E.A., Jr | Article in Journal | | 2017 |
| The Irish dames of Ypres and the Butler connection | Butler, John J. | Article in Journal | | 1988 |
| The Irish dimension of the British Kulturkampf : Vaticanism and civil allegiance, 1870-1875 | Jenkins, H. | Article in Journal | | 1979 |
| The Irish discalced Carmelites, 1625-53 | O'Mahony, Séamus Anthony | Thesis | | 1978 |
| The Irish disestablishment conference of 1869 | Fair, John D. | Article in Journal | | 1975 |
| The Irish Dominican mission to the Danish West Indies, 1758-1771 | Fenning, Hugh | Article in Journal | | 1965 |
| The Irish Dominican mission to the Danish West Indies, 1758-71 | Fenning, Hugh | Article in Journal | | 1965 |
| The Irish Dominican province (1761-1765), with some notes on its missionaries in Scotland (1765-1773) | Fenning, Hugh | Article in Journal | | 1977 |
| The Irish Dominican province (1765-1778) | Fenning, Hugh | Article in Journal | | 1979 |
| The Irish Dominican province (1778-1785) | Fenning, Hugh | Article in Journal | | 1985 |
| The Irish Dominican province 1778 | Fenning, Hugh | Article in Journal | | 1979 |
| The Irish Dominican Province 1785-1797 | Fenning, Hugh | Article in Journal | | 1986 |
| The Irish Dominican province at the beginning of its decline (1745-1761) | Fenning, Hugh | Article in Journal | | 1975 |
| The Irish Dominican province in the final decades of persecution (1721-1745) | Fenning, Hugh | Article in Journal | | 1972 |
| The Irish Dominican province under appointed superiors (1698-1721) | Fenning, Hugh | Article in Journal | | 1968 |
| The Irish Dominicans, 1534-1641 | Flynn, Thomas Simeon | Thesis | | 1988 |
| The Irish Dominicans, 1536-1641 | Flynn, Thomas S. | Monograph or Collective Volume | Four Courts | 1993 |
| The Irish Dominicans, 800 years, 1224-2024 | Crotty, Terence | Monograph or Collective Volume | Dominican Publications | 2025 |
| The Irish Ecclesiastical Record and Maynooth | Wall, Thomas | Article in Journal | | 1945 |
| The Irish Emigrant Chaplaincy Scheme in Britain, 1957-82 | O'Shea, Kieran | Monograph or Collective Volume | The author | 1985 |
| The Irish episcopate and pastoral care, 1318-1534 | Burrows, Michael | Thesis | | 1986 |
| The Irish flood : famine, philanthropy, and the emergence of duelling Liverpool Catholic identities, 1845-1865 | Dye, Ryan | Article in Journal | | 2003 |
| The Irish Franciscan continental colleges and the doctrine of the Immaculate Conception | Mac Craith, Mícheál | Article in Book | | 2019 |
| The Irish Franciscan mission ot the Highlands and Islands | Harris, Jason | Article in Book | | 2016 |
| The Irish Franciscan mission to Scotland in the 17th century | Giblin, Cathaldus | Article in Journal | | 1952 |
| The Irish Franciscans in Poland | Jennings, Brendan | Article in Journal | | 1957 |
| The Irish Franciscans in Prague 1629-1786 : history of the Franciscan College of the Immaculate Conception of the Virgin Mary in Prague | Kucharova, HedvikaParez, Jan | Monograph or Collective Volume | Charles University | 2015 |
| The Irish fright of 1688 : real violence and imagined massacre | Jones, G. H. | Article in Journal | | 1982 |
| The Irish hedge schoolmaster in the American backcountry | Koos, Greg | Article in Journal | | 2001 |
| The Irish hierarchy and the queen's colleges (1845-50) | Hegarty, W. J. | Article in Journal | | 1945 |
| The Irish Holy Ghost Order's involvement in the Nigerian civil war, 1967-1970 | Mooney, Olive | Thesis | | 1999 |
| The Irish hybrid lists of the Seven Heavens | Smyth, Marina | Article in Book | | 2015 |
| The Irish in Asturias : the footprint of the Irish College, Salamanca, 1913-1950 | Richardson, Regina Whelan | Article in Journal | | 2012 |
| The Irish in Britain | O'Connor, Kevin | Monograph or Collective Volume | Sidgwick & Jackson | 1972 |
| The Irish in Britain, 1780-1921 | Collins, Brenda | Article in Book | | 1993 |
| The Irish in Britain, 1815-1939 | | Monograph or Collective Volume | Pinter | 1989 |
| The Irish in Canada | Wilson, David A. | Monograph or Collective Volume | Canadian Historical Association | 1989 |
| The Irish in Kilburn : myth and reality | Colloms, MarianneWeindling, D. | Article in Journal | | 2002 |
| The Irish in Kilburn and the Church of the Sacred Heart, Quex Road | Alpert, Michael | Article in Journal | | 2001 |
| The Irish in modern Scotland | Handley, J. E. | Monograph or Collective Volume | University P. | 1947 |
| The Irish in North America : Catholic or Protestant? | Akenson, Donald Harman | Article in Journal | | 1991 |
| The Irish in North America : new perspectives | Wilson, David A. | Article in Journal | | 1988 |
| The Irish in the Argentine republic : John Cullen's 1888 report | Walsh, Edward | Article in Journal | | 2001 |
| The Irish in the Iberian Atlantic and Rome: Globalized individuals and the rise of Transatlantic networks of information | Pérez Tostado, Igor | Article in Book | | 2019 |
| The Irish in the Victorian city | | Monograph or Collective Volume | Croom Helm | 1985 |
| The Irish influence on the Australian Catholic Church | Ryan, Christopher | Article in Journal | | 2000 |
| The Irish influence on the Roman Catholic church in South Africa | Brain, J. B. | Article in Book | | 1992 |
| The Irish instruction of 1775 | Ó Fearghail, Fearghus | Article in Journal | | 2008 |
| The Irish laity : some findings of the 1984 national survey | Weafer, John | Article in Journal | | 1986 |
| The Irish land question and sectarian violence | Crotty, Raymond, 1925-1994 | Monograph or Collective Volume | Economic & Social Research Council | 1981 |
| The Irish layman | Brown, T. N. | Article in Book | | 1970 |
| The Irish legal profession and the Catholic revival 1660-89 | Maynard, Hazel | Article in Book | | 2009 |
| The Irish martyrs | Corish, Patrick J. | Monograph or Collective Volume | Veritas | 1989 |
| The Irish martyrs and Irish history | Corish, Patrick J. | Article in Journal | | 1993 |
| The Irish mission in west Florida | Din, Gilbert C. | Article in Journal | | 1971 |
| The Irish Missionary Movement : A historical survey 1830-1980 | Hogan, Edmund M. | Monograph or Collective Volume | | 1990 |
| The Irish missionary movement : a historical survey, 1830-1980 | Hogan, E. M. | Monograph or Collective Volume | Gill & Macmillan|Catholic University of America Press | 1990 |
| The Irish Pallottines | McCarthy, Donal | Article in Book | | 1989 |
| The Irish Papal Brigade : origins, objectives and fortunes | O'Carroll, Ciarán | Article in Book | | 2014 |
| The Irish parliamentary tradition : With three essays on the Treaty debate by F.S.L. Lyons | Lyons, F. S. L. (Francis Stewart Leland) | Monograph or Collective Volume | Gill & Macmillan|Barnes & Noble Books | 1973 |
| The Irish Peasant and the conflict between Irish-Ireland and the Catholic bishops | Biletz, Frank A. | Article in Book | | 2000 |
| The Irish penal code and some of its historians | Burns, R. E. | Article in Journal | | 1959 |
| The Irish Popery laws : a study of 18th century legislation and behavior | Burns, R. E. | Article in Journal | | 1962 |
| The Irish presence in the north of England, 1850-1914 | Steele, Edward David | Article in Journal | | 1976 |
| The Irish priests in the penal times (1660-1760) | Burke, William P. | Monograph or Collective Volume | | 1914 |
| The Irish question and the question of drunkenness : Catholic loyalty in nineteenth-century Liverpool | Beckingham, David | Article in Journal | | 2009 |
| The Irish question and the revival of anti-Catholicism in the 1920's | Cuddy, E. | Article in Journal | | 1981 |
| The Irish remonstrance of 1317 : an international perspective | Phillips, J.R.S. (John Roland Seymour) | Article in Book | | 2009 |
| The Irish shrines of our Lady | Canice, Fr. | Article in Journal | | 1947 |
| The Irish Sisters of Mercy in the Crimea | Bolster, Ellen | Thesis | | 1961 |
| The Irish Ulster Scot | Logan, Liam | Article in Journal | | 2013 |
| The Irish war of defence, 1598-1600 : extracts from the 'De Hibernia Insula Commentarius' of Peter Lombard, archbishop of Armagh. Edited, with introduction and translation | | Monograph or Collective Volume | | 1930 |
| The Irish World, FDR, and the Great Depression | Hanley, Brian | Article in Journal | | 2003 |
| The Irish-French conflict in catholic episcopal nominations : the Western Sees and the struggle for domination within the church | Huel, R. | Article in Journal | | 1975 |
| The Irish-speaking clergy in the nineteenth century: Education, trends and timing | Wolf, Nicholas M. | Article in Journal | | 2008 |
| 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 Jacobite Chapel Royal at Saint-Germain-en-Laye | Corp, Edward T. | Article in Journal | | 1997 |
| The Jacobites : Britain and Europe, 1688-1788 | Szechi, Daniel | Monograph or Collective Volume | Manchester University Press | 1994 |
| The Jesuit fathers and University College | Gwynn, Aubrey | Article in Book | | 1954 |
| The Jesuit houses in Ireland | Scantlebury, C. | Article in Journal | | 1944 |
| The Jesuit mission to Ireland, 1596-1626 | Corboy, James | Thesis | | 1941 |
| The Jesuit university of Dublin, c.1627 | Little, G. A. | Article in Journal | | 1952 |
| The Jesuit urban mission in Ireland, c.1598–1650 | Lennon, Colm | Article in Book | | 2022 |
| The Jesuits - Limerick and Oola connections | Ryan, Patrick M. | Article in Journal | | 1997 |
| The Jesuits and Athlone in the 17th and 18th centuries | Finegan, Francis | Article in Journal | | 1971 |
| The Jesuits and music in early modern Ireland | Gillespie, Raymond | Article in Book | | 2022 |
| The Jesuits and the 1937 constitution | Keogh, Dermot | Article in Journal | | 1989 |
| The Jesuits and the 1937 constitution | Keogh, Dermot | Article in Book | | 2012 |
| The Jesuits and the drafting of the Irish constitution of 1937 | Faughnan, Seán | Article in Journal | | 1988 |
| The Jesuits come to Ireland | O'Donoghue, Fergus | Article in Journal | | 1991 |
| The Jesuits in Dublin 1598-1998 | Browne, FrankO'Donnell, E. E. | Monograph or Collective Volume | Wolfhound Press | 1999 |
| The Jesuits in Limerick before and after the siege | Roche-Kelly, Hubert | Article in Book | | 1951 |
| The Jesuits in Waterford | Power, P. | Article in Journal | | 1947 |
| The Jesuits, Mary, and Joseph : the Catholic Workers' College, Dublin, 1951-66 | Limond, David | Article in Journal | | 2016 |
| The Jesuits, Mary, and Joseph :the Catholic Workers' College, Dublin, 1951-66 | Limond, David | Article in Journal | | 2016 |
| The Jews and Irish in modern Scotland : anti-semitism, sectarianism and social mobility | Kenefick, William | Article in Journal | | 2013 |
| The Jews, Fr. Creagh and the Mayor's court of conscience | Ryan, Desmond | Article in Journal | | 2002 |
| The journey of James Lyons from Rome to Sligo, 1763-5 | | Article in Journal | | 1968 |
| The journey to establish a second National School at Lismagirl, Killinkere | Tansey, Mary Flynn | Article in Journal | | 2021 |
| The keeper's recital : music and cultural history in Ireland, 1770-1970 | White, Harry | Monograph or Collective Volume | Cork University Press in association with Field Day | 1998 |
| The Kennedys, Ireland and Irish America | Ahtes, John H. | Article in Journal | | 1991 |
| The Killaloe anthology | Kierse, Sean | Monograph or Collective Volume | Boru Books | 2001 |
| The Kinsale nuns in the Crimea, 1854-1856 | Hurley, Frank | Article in Journal | | 1986 |
| The Knights of Columbanus : lay activism from the origins through the Great Depression | Kauffman, C. J. | Article in Journal | | 1990 |
| The Knights of Columbanus : lay activism from the origins through the Great Depression | Kauffman, C. J. | Article in Journal | | 1990 |
| The Knights of Malta : 900 years of care | McHugh, Rosita | Monograph or Collective Volume | Irish Association of the Sovereign, Military and Hospitaller Order of St John of Jerusalem, of Rhodes and of Malta | 1996 |
| The Knights of Saint Columbanus | Bolster, Evelyn | Monograph or Collective Volume | | 1979 |
| The Knights of St. Columbanus | Bolster, Evelyn | Monograph or Collective Volume | Gill & Macmillan | 1979 |
| The know-nothing party and fall of a people's movement | Mulkern, John R. | Monograph or Collective Volume | Northeastern University Press | 1990 |
| The lady next door | Begbie, Edward HaroldMaume, Patrick | Monograph or Collective Volume | University College Dublin Press | 2006 |
| The Lancashire Irish and the Catholic Church 1846-71 : the social dimension | Lowe, W. J. | Article in Journal | | 1976 |
| The lands of the Cross of Holy Trinity, Dublin, in Lechaathel | Connolly, Al | Article in Journal | | 1998 |
| The last Irish scribe | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1941 |
| The last priests of Lisanuffy | Browne, Raymond | Article in Journal | | 1996 |
| The last speech and prayer of Blessed Terence Albert O'Brien, Bishop of Emly, 1651 | | Article in Journal | | 1996 |
| The last speech of Blessed Oliver Plunket | | Article in Journal | | 1947 |
| The last will and testament of archbishop Daniel Murray of Dublin (d. 1852) | | Article in Journal | | 1979 |
| The last years of a confessor of the Faith : Fr. David Wolf | Da Costa, Manuel | Article in Journal | | 1946 |
| The last years of Bishop T. A. O'Brien, O.P. | Taheny, L. | Article in Book | | 1951 |
| The later pilgrimage - Irish poetry on Lough Derg | Ní Chatháin, Próinséas | Article in Book | | 1988 |
| The Lavey Green walk | Cunningham, Terence | Article in Journal | | 1961 |
| The law the nun and Edmund Burke | Lambert, Elizabeth R. | Article in Book | | 2005 |
| The Lawless sortie into Co. Monaghan : September-October 1828 | Murnane, James H. | Article in Journal | | 1990 |
| The leading Catholics of Waterford in 1792 | Ffolliott, Rosemary | Article in Journal | | 1976 |
| The legacy of a pioneer of female education in Ireland : tercentennial considerations of Nano Nagle and Presentation schooling | Bennett, DeirdreDelaney, CatrionaRaftery, Deirdre | Article in Journal | | 2019 |
| The legacy of Newman | Meehan, D. | Article in Journal | | 1946 |
| The legal and constitutional organization of the Catholic Church in nineteenth-century Ireland | Rafferty, Oliver P. | Article in Book | | 2021 |
| The Lenaghan Fathers of Crossmaglen | Hanratty, Dennis | Article in Journal | | 2002 |
| The letter under the pillow : 150 years, 2 continents, 840 heroic Irish women | Aherne, Clare | Monograph or Collective Volume | Carrowmore Publishing | 2016 |
| The letters and diaries of John Henry Newman : Vol 16 | Dessain, C. S.Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1965 |
| The letters and diaries of John Henry Newman, Vol 14 : Papal agression, 1850 - 1851 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1963 |
| The letters and diaries of John Henry Newman, Vol 21 : The Apologia, 1864-1865 | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1971 |
| The letters and diaries of John Henry Newman, Vol. 18 : new beginnings in England, 1857-1858 | Newman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1968 |
| The letters and diaries of John Henry Newman. Vol. 15 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1964 |
| The letters and diaries of John Henry Newman. Vol. 17 | Blehl, Vincent FerrerDessain, Charles StephenNewman, John Henry, cardinal, 1801-1890 | Monograph or Collective Volume | Nelson | 1967 |
| The letters of an Irish Brother Edward Sinnott S.J., from Calcutta, Part 2, 1837-43 | Laheen, Kevin | Article in Journal | | 2006 |
| The letters of Charles O'Connor of Belanagare; vol. 1 : 1731-1771 | O'Connor, CharlesWard, C. C.Ward, Robert E. | Monograph or Collective Volume | UMI, Monographs for the Irish American Cultural Institute | 1980 |
| The letters of Charles O'Conor of Belanagare. 2 vols. | Ward, C. C.Ward, R. E. | Monograph or Collective Volume | | 1980 |
| The letters of Luke Wadding | Mooney, Canice | Article in Journal | | 1957 |
| The letters of Oliver Plunkett, 1625-81, archbishop of Armagh and primate of all Ireland | Hanly, JohnPlunkett, Oliver, bishop and saint, 1625-1681 | Monograph or Collective Volume | Dolmen Press | 1979 |
| The letters of Saint Oliver Plunkett, 1625-1681 : Archbishop of Armagh and Primate of all Ireland | | Monograph or Collective Volume | | 1979 |
| The letters of Saint Oliver Plunkett, 1625-1681, Archbishop of Armagh and Primate of All Ireland | | Monograph or Collective Volume | | 1979 |
| The letters of St. Oliver Plunkett | | Monograph or Collective Volume | Dolmen Press | 1979 |
| The Levellers and the conquest of Ireland in 1649 | Carlin, Norah | Article in Journal | | 1987 |
| The liberal Catholicism of Patrick O'Donohue and the Tasmanian crisis of 1850 | Davis, Richard P. | Article in Journal | | 1969 |
| The library of a parish priest of the penal days : introduction | Ó Súilleabháin, Pádraig | Article in Journal | | 1964 |
| The library of a preacher of Drogheda : John Donnelly, O.P. (d. 1748) | | Article in Journal | | 1978 |
| The library of an Irish Catholic émigré : Michael Moore's 'bibliotheque', 1726 | Chambers, Liam | Article in Journal | | 2004 |
| The library of Archbishop Piers Creagh | Mooney, Canice | Article in Journal | | 1955 |
| The library of Bishop William Daton of Ossory, 1698 | | Article in Journal | | 1978 |
| The library of Dennis Molony (1650-1726), an Irish Catholic lawyer in London | [Sale catalogue] | Article in Journal | | 2009 |
| The library of the Augustinians of Galway in 1731 | | Article in Journal | | 1990 |
| The life & times of Patrick Comerford O.S.A. (1586-1652) : Counter-Reformation Bishop of Waterford and Lismore 1629-1652 | Olden, Michael G. | Monograph or Collective Volume | The author | [2013?] |
| The life and times of a rural parish priest, 1896-1908 | Higgins, Seán | Article in Book | | 2006 |
| The life and times of Archbishop Denis O'Driscoll (1600-1650) | Coombes, James | Article in Journal | | 1965 |
| The life and times of Bishop Edward Kernan | Mulligan, Patrick | Article in Journal | | 1981 |
| The life and times of Daniel Murray : Archbishop of Dublin, 1823-1852 | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2018 |
| The life and times of Father Bernard Murphy : Termon, Carrickmore 1832-1897 | Bradley, John, Rev.Murphy, Eddie | Monograph or Collective Volume | Eddie Murphy | 1994 |
| The life and times of Father Mathew | Shaw, H.B.P., Rev. | Thesis | | 1939 |
| The life and times of Fr Michael O'Donovan SVD | O'Donovan, Michael | Article in Journal | | 2006 |
| The life and times of Fr. Sean Manning (a Gaelic leader) | Guckian, Des | Monograph or Collective Volume | The author | 1979 |
| The life of Dr Thomas Hussey (1746-1803), bishop of Waterford and Lismore | Murphy, William Gerald | Thesis | | 1968 |
| The life of Elisabeth, Lady Falkland, 1585-1639 | Fullerton, G. C. | Monograph or Collective Volume | | 1883 |
| The life of Elizabeth, Lady Falkland, 1585-1639 | Fullerton, Brian | Monograph or Collective Volume | [s.n.] | 1883 |
| The life of Father Theobald Mathew, O. M. Cap., apostle of temperance | Rogers, Patrick | Article in Journal | | 1939 |
| The life of Frederick Lucas, M.P. 2 vols. | Lucas, Edward | Monograph or Collective Volume | | 1886 |
| The life of Sir Denis Henry : Catholic Unionist | McDonnell, A. D. | Monograph or Collective Volume | Ulster Historical Foundation | 2000 |
| The life of the Rev. James Coigly ... as written by himself | Coigly, James | Monograph or Collective Volume | | 1798 |
| The life, times, and correspondence of the Rt. Rev. Dr. Doyle, Bishop of Kildare and Leighlin | Fitzpatrick, W. J., 1830-1895 | Monograph or Collective Volume | | 1861 |
| The light that never goes out : the life of Father Joe Foy, PP, 1841-1918 | McGuire, Jim | Monograph or Collective Volume | Jim McGuire | 2012 |
| The Limerick bishop who said no to papal infallibility | Irwin, Liam | Article in Journal | | 1993 |
| The Little Ark of Kilbaha | Ó Sé, Liam | Article in Journal | | 2003 |
| The logic of collective sacrifice : Ireland and the British army, 1914-1918 | Fitzpatrick, David | Article in Journal | | 1995 |
| The Lombards of Lombardstown | Lombard, John | Article in Journal | | 2015 |
| The London 'mob' of the eighteenth century | Rudé, George F. E. | Article in Journal | | 1959 |
| The London Catholic Ragged School : an experiment in education for Irish destitute children | Feheney, J. P. M. | Article in Journal | | 1984 |
| The long rupture, 1870–1970 : the darker side of Franco-Irish relations | aan de Wiel, Jéróme | Article in Journal | | 2015 |
| The Lord and Labour: Irish clerical attitudes to the workers' question, 1903-1920 | Maguire, Paul | Article in Journal | | 2011 |
| The Lords Baltimore in Ireland and North America: the beginning of an Atlantic world | Lyttleton, James | Article in Journal | | 2013 |
| The Lost Paradise : an account of the Jesuits in Paraguay, 1607-1768 | Caraman, Philip, 1911- | Monograph or Collective Volume | Sidgwick & Jackson | 1975 |
| The MacGlynn affair and the shaping of the new conservatism in American Catholicism 1886-1894 | Curran, Robert Emmet | Article in Journal | | 1980 |
| The Madonna of Lettershendony, Co. Derry | Jefferies, Henry A. | Article in Journal | | 1997 |
| The Maher-Crolly controversy, 1850 | MacAuley, Ambrose | Article in Journal | | 1984 |
| The Maher-Crolly controversy, 1850 | Macaulay, Ambrose | Article in Journal | | 1984 |
| The making of a penal law (2 Anne, c.6), 1703-4 | Simms, J. G. (John Gerald) | Article in Journal | | 1960 |
| The making of an ethnic collectivity : Irish Catholic immigrants in nineteenth-century Christchurch | Fraser, Lyndon A. | Article in Journal | | 1996 |
| The making of an Irish and a Jewish Boston, 1820-1900 | Dwyer-Ryan, Meaghan | Article in Journal | | 2016 |
| The making of an Irish nuncio. The early career of Paschal Robinson OFM, the first papal nuncio the the Irish Free State, 1929-1948 | Morrissey, Thomas J. | Article in Journal | | 2019 |
| The making of folk plays | Molloy, Michael J. | Article in Book | | 1977 |
| The making of Hibernian; 2 : 1893-1914, the brave years | Lugton, Alan | Monograph or Collective Volume | John Donald | 1997 |
| The making of the archbishops of Tuam : the appointment of Archbishop John McEvilly | Waldron, Kieran | Article in Journal | | 2006 |
| The Making of the Modern Diocese of Galloway | Aspinwall, Bernard | Article in Book | | 1997 |
| The making of the Roman Catholic church in Ireland, 1850-1860 | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1980 |
| The Mansfields of Co. Kildare: A Franco-Irish Catholic elite family and their networks 1870-1915 | Murphy, Fergus | Monograph or Collective Volume | Four Courts Press | 2023 |
| The manuscripts of the Annals of the Four Masters | Cunningham, Bernadette | Article in Journal | | 2007 |
| The marginal kingdom : Ireland as a problem in the first British empire | Canny, Nicholas P. | Article in Book | | 1991 |
| The Marian shrine of Knock : the first decade | Donnelly, James S., Jr | Article in Journal | | 1993 |
| The Marian Society | Behan, Maura | Article in Journal | | 2000 |
| The Marist sisters | McGuinness, Brigid Jane | Article in Journal | | 1998 |
| The Martyrology of Donegal : a calendar of the saints of Ireland | | Monograph or Collective Volume | Irish Archaeological & Celtic Society | 1864 |
| The Mary missions of Matthew Gibney, part 1-2 | Carrey, Joan Francis | Article in Journal | | 2002 |
| The Mass rock - Poll an Aifrinn in Kilclohane Wood : the martyrdom of Fr. Thaddeus (Tadhg) Moriarty O.P. | Lawlor, Lally | Article in Journal | | 1997 |
| The mauve decade : American life at the end of the nineteenth century | Beer, Thomas | Monograph or Collective Volume | Garden City | 1926 |
| The Maynooth College archive | Corish, Patrick J. | Article in Journal | | 1995 |
| The Maynooth grant, the dissenters and disestablishment, 1845-7 | Machin, George Ian Thom | Article in Journal | | 1967 |
| The Maynooth question of 1845 | Norman, E. R. | Article in Journal | | 1966 |
| The Memoir of Dermot O'Conor Donelan (1853-1929) | Foster, R. F. (Robert Fitzroy) (Roy), 1949- | Article in Journal | | 2024 |
| The memoirs of John M. Regan : a Catholic officer in the RIC and RUC, 1909-1948 | Regan, John M., 1889-1971 | Monograph or Collective Volume | Four Courts | 2007 |
| The men of No Popery : the origins of the Orange Order | Smyth, Jim | Article in Journal | | 1995 |
| The Men of No Popery: the origins of the Orange Order | Smyth, Jim | Article in Book | | 2018 |
| The migration of Ulster Catholics to Connaught, 1795-96 : an addendum | Hogan, Patricia | Article in Journal | | 1986 |
| The military and hospitaller order of St Lazarus of Jerusalem | Lee, Gerard A. | Article in Journal | | 1968 |
| The ministry of music - remembering Palestrina | Daly, Cathal B. | Article in Journal | | 1994 |
| The minority problem in the 26 counties | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1967 |
| The miracle of Ireland | | Monograph or Collective Volume | Clonmore & Reynolds | 1959 |
| The Missionary Society of Columban, 1916-1954 | Collins, Neil | Thesis | | 2007 |
| The missions : Africa and the Orient | McGlade, Joseph | Monograph or Collective Volume | Gill | 1967 |
| The mitred earl : an 18th century eccentric | Fothergill, Brian | Monograph or Collective Volume | Faber | 1974 |
| The modern Irish missionary movement | Cooke, Colm | Article in Journal | | 1980 |
| The modern story of St Cronan's Roscrea, Co. Tipperary : its clergy, people and parochial buildings | Cunningham, George | Monograph or Collective Volume | Roscrea People | 2001 |
| The Molly Maguires and the Catholic church | Kenny, Kevin, 1960- | Article in Journal | | 1995 |
| The monasteries, Magdalen asylums and reformatory schools of Our Lady of Charity in Ireland, 1853-1973 | Prunty, Jacinta | Monograph or Collective Volume | Columba Press | 2017 |
| The Moneystown Mass Paths | Timmons, Mauny | Article in Journal | | 2004 |
| The Moriarty chalice | Anonymous | Article in Journal | | 2006 |
| The mortgage papers of St. Patrick's College, Maynooth 1871-1923 | Dooley, Terence A. M. | Article in Journal | | 2005 |
| The mother and child scheme | Coyne, E. J. | Article in Journal | | 1998 |
| The Motivation of the Modern Irish Missionary Movement 1912-1939 | Hogan, Edmund M. | Article in Journal | | 1979 |
| The Mullyash murders of 1837 | Curran, Daragh | Article in Journal | | 2015 |
| The Murnaghan memos : Catholic concerns with the third Home Rule bill, 1912 | Mulvagh, Conor | Article in Book | | 2014 |
| The Murphy riots : a Victorian dilemma | Arnstein, Walter L. | Article in Journal | | 1975 |
| The Murphys of Lullymore, 1800-1932: a modern fiefdom | McKernan, Fiona | Article in Journal | | 2019 |
| The name of the diocese | McKenna, John | Article in Journal | | 1991 |
| The narrow ground : patterns of Ulster history | Stewart, Anthony Terence Quincey, 1929-2010 | Monograph or Collective Volume | Pretani Press | 1986 |
| The narrow ground : the roots of conflict in Ulster | Stewart, Anthony Terence Quincey, 1929-2010 | Monograph or Collective Volume | Faber | 1989 |
| The narrow road : Harry Midgley and Catholic schools in Northern Ireland | McGrath, Michael | Article in Journal | | 1997 |
| The nationalism of Canon Sheehan | Hurley, James | Thesis | | 1956 |
| The network structure of Catholic Irish migration to nineteenth- century Canterbury, New Zealand | Fraser, Lyndon | Article in Book | | 1996 |
| The new Church of St Patrick - laying the foundation stone, 1856 | Walsh, Chris | Article in Journal | | 1994 |
| The new St Malachy's : building and finance | Ó Muirí, Réamonn | Article in Book | | 2013 |
| The New Zealand Tablet and the Irish Catholic Press Worldwide, 1898-1923 | McNamara, Heather | Article in Journal | | 2003 |
| The nineteenth century novel and Irish social history : some aspects | MacDonagh, Oliver | Monograph or Collective Volume | National University of Ireland | 1971 |
| The North : a conundrum of identity | Bennett, Jack | Article in Book | | 1998 |
| The northern Catholic | Fennell, Desmond | Monograph or Collective Volume | Mount Salus Press | 1958 |
| The northern dioceses and the Irish College of Alcalá, Spain | O Connell, Patricia | Article in Journal | | 1993 |
| The Northern Ireland civil rights movement | Purdie, Bob | Article in Book | | 1995 |
| The Northern Ireland problem : a study in group relations | Barritt, D. P. | Monograph or Collective Volume | Oxford University Press | 1972 |
| The novelist of 'New Street' | Mícheál, Fr. | Article in Book | | 1942 |
| The nun of Kenmare | Boyle, Brian | Monograph or Collective Volume | The author | 2014 |
| The nuns in Kerry : the unsung heroines of the famine | O'Shea, Kieran | Article in Book | | 1997 |
| The O'Sullivan bourse in Louvain | De Rís, Seorise | Article in Journal | | 1997 |
| The obligation of Titus: a theological opinion concerning worthiness for episcopal office in the diocese of Ferns, 1645 | McHugh, Jason | Article in Journal | | 2017 |
| The official Presbyterian Irish language policy in the 18th and 19th centuries | Fitzsimons, J. | Article in Journal | | 1949 |
| The Old Brotherhood of the English secular clergy : catalogue of the archives | Anonymous | Monograph or Collective Volume | Catholic Record Society | 1968 |
| The old chapel in the late 1920s and early 1930s | Ó hÁdhmaill, Pádraig | Article in Book | | 2013 |
| The old school tie - no 2, Rockwell College | Collins, Tom | Article in Journal | | 1946 |
| The oldest church in Ireland's 'oldest town' | Ó Donnchadha, Brian | Article in Journal | | 2007 |
| The oldest Skerries society [Talk given 1973] | Harford, Margaret | Article in Journal | | 2008 |
| The only lever ... ? : the Catholic priest in Irish politics 1823-29 | O'Ferrall, Fergus | Article in Journal | | 1981 |
| The opening of the Vatican archives (1880-1881) and Irish historical research | Walsh, K. | Article in Journal | | 1981 |
| The operation of the anti Popery laws against Catholic property | Ó Dálaigh, Brian | Article in Journal | | 2006 |
| The operation of the penal laws against the protestant non-conformists in Ireland in the eighteenth century | Beckett, J.C. | Thesis | | 1941 |
| The Orange and Green Riots (New York City : July 12, 1870 & 1871) | Sullivan, Stephen J. | Article in Journal | | 1991 |
| The Orange card : racism, religion and politics in Northern Ireland | Campbell, Flann | Monograph or Collective Volume | Connolly Publications | 1979 |
| The ordeal of O'Conor of Belanagare | Ward, C. C.Ward, R. E. | Article in Journal | | 1979 |
| The order of Carmel and the Blackrock Monastery | O'Neill, Monica | Article in Journal | | 1998 |
| The Order of Liberators | Snoddy, Oliver | Article in Journal | | 1966 |
| The Order of Liberators | Barron, Declan | Article in Journal | | 2020 |
| The ordination in Ireland of Jansenist clergy from Utrecht, 1715-16 : the role of Fr Paul Kenny, ODC of Co. Galway, part 1 | Mitchell, James | Article in Journal | | 1989 |
| The ordination in Ireland of Jansenist clergy from Utrecht, 1715-16 : the role of Fr Paul Kenny, ODC, of Co. Galway | Mitchell, James | Article in Journal | | 1991 |
| The organization of the Irish church, 1603-1641 | Corish, Patrick J. | Article in Journal | | 1957 |
| The origin of Irish Catholic-nationalism | Clifford, Brendan | Monograph or Collective Volume | Athol | 1992 |
| The origin of Mount Melleray Abbey | Heaney, Columban | Article in Journal | | 1983 |
| The origins and progress of the Catholic question in Ireland, 1690-1800 | Bartlett, Thomas | Article in Book | | 1990 |
| The origins of Catholic nationalism | Corish, Patrick J. | Monograph or Collective Volume | Gill | 1968 |
| The origins of sectarianism in early modern Ireland | | Monograph or Collective Volume | Cambridge University Press | 2005 |
| The origins of St Mary's Church, Ballygar,its history, and importance to Ballygar, Elphin diocese and Ireland. {1832-1863} | MacNamara, Jarlath | Article in Journal | | 2019 |
| The origins of the Catholic University of Ireland, 1845-54 | Vale, Mary D. | Article in Journal | | 1954 |
| The origins of the Irish in Newcastle and County Durham | Duffy, Godfrey | Article in Journal | | 2002 |
| The origins of the troubles in northern Ireland : an historical background | McCarney, W. G. | Article in Journal | | 1996 |
| The origins of Ulster Unionism : the formation of popular Protestant politics and ideology in nineteenth-century Ireland | Gibbon, Peter | Monograph or Collective Volume | University P. | 1975 |
| The origins, development and decline of vocationalism in twentieth-century Ireland | O'Leary, Donald | Thesis | | 1996 |
| The other '98 | Whelan, Ruth | Article in Book | | 2003 |
| The other Irish mission: Spanish patronage and Catholic hierarchy in the Seventeenth Century | Bravo Lozano, Cristina | Article in Book | | 2019 |
| The outbreak of the Irish rebellion of 1641 | Perceval-Maxwell, Michael | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| The Oxford History of British and Irish Catholicism, Volume I : Endings and New Beginnings, 1530-1640 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume II : Uncertainty and Change, 1641-1745 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume III : Relief, Revolution, and Revival, 1746-1829 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume IV : Building Identity, 1830-1913 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The Oxford History of British and Irish Catholicism, Volume V : Recapturing the Apostolate of the Laity, 1914-2021 | | Monograph or Collective Volume | Oxford University Press | 2023 |
| The papacy and episcopal appointments in Ireland, 1305-34 | Williams, Patrick | Thesis | | 1961 |
| The papal brigade of St Patrick | O'Carroll, Ciaran | Article in Book | | 2008 |
| The papal mission to Ireland of James Taaffe in 1668 | Millett, Benignus | Article in Book | | 1995 |
| The papers of Nicholas Archdeacon (bishop of Kilmacduagh and Kilfenora 1800-1823) | Murphy, P. J. | Article in Journal | | 1973 |
| The parish church of Saints Mary and Peter, Arklow | Tyrrell, Dolores | Article in Journal | | 1985 |
| The parish churches of North Tipperary : commemorating a two-hundred year heritage | Hayes, William J.Kennedy, Joseph | Monograph or Collective Volume | Lisheen Publications | 2007 |
| The parish clergy of Tuam, 1712-1809 | | Article in Journal | | 1998 |
| The parish fraternities and county Meath in the late middle ages | Lennon, Colm | Article in Journal | | 2008 |
| The Parish Mission Movement, 1850-1880 | Larkin, Emmet | Article in Book | | 2002 |
| The parish of Cloughbawn | Harte, Laurence | Article in Journal | | 1925 |
| The Parish of Denn in the early 1800s | Kelly, Liam | Article in Journal | | 2011 |
| The parish of Iniscealtra | Madden, Gerard | Article in Book | | 1993 |
| The parish of Kilmeen (Boherbue-Kilkeam) | McCarthy, Louis | Article in Journal | | 1997 |
| The Parish of Kilmore | Ó Fiaich, Tomás, d.1990 | Article in Journal | | 2010 |
| The parish of St Joseph's, Hannahstown, Co. Antrim, 1826-1993 | Fulton, Eileen | Monograph or Collective Volume | Ulster Journals | 1993 |
| The parish of Stradbally, Ballylaneen, Faha, Co. Waterford 1685-1990 | Ryan, Michael | Monograph or Collective Volume | Michael J. Ryan | 1990 |
| The parish priests of Maryborough, 1815-1941(obituaries) | Leinster Express | Article in Journal | | 1992 |
| The parliamentary reform movement of the 1780s and the Catholic question | Kelly, James, 1959- | Article in Journal | | 1988 |
| The Parnell split, 1890-91 | Callanan, Francis | Thesis | | 1991 |
| The partition of Ireland : how and why it was accomplished | O'Neill, David | Monograph or Collective Volume | Gill | 1946 |
| The Party Processions Acts : an account of Irish parading during the nineteenth century | Maddox, Neil | Thesis | | 2006 |
| The Passionists : centenary of the Passionists in Ireland, 1856-1956 | Anonymous | Monograph or Collective Volume | St Paul's Retreat | 1956 |
| The past is history : Catholics in modern Scotland | McCrone, DavidRosie, Michael | Article in Book | | 2000 |
| The pastoral and education letters of Bishop James Doyle of Kildare and Leighlin, 1786-1834 | | Monograph or Collective Volume | Four Courts | 2004 |
| The pastoral function of church archives : a reflection on the theological, juridical and pastoral context of Roman Catholic diocesan archives | Bracken, David | Article in Journal | | 2017 |
| The pastoral letters and other writings of Cardinal Cullen, Archbishop of Dublin ... 3 vols. | | Monograph or Collective Volume | | 1882 |
| The pastoral politics of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2000 |
| The pastoral role of the Roman Catholic Church in pre-famine Ireland 1750-1850 | Larkin, Emmet | Monograph or Collective Volume | Four Courts|Catholic University of America Press | 2006 |
| The pastoral vision of Paul Cullen | O'Carroll, Ciaran | Article in Book | | 2011 |
| The pastoral zeal of Robert Wauchope | Millett, Benignus | Article in Journal | | 1956 |
| The path of Mercy : the life of Catherine McAuley | Sullivan, Mary C. | Monograph or Collective Volume | Four Courts|Catholic University of America | 2012 |
| The Patrician brothers in Fethard, 1873-1993 | McInerney, J.Others | Monograph or Collective Volume | Fethard Historical Society | 1997 |
| The Patrician brothers in Mallow ... 1879 to 1994 | Ruane, Kevin | Article in Journal | | 1994 |
| The patriot priest Fr. Nicholas Sheehy, Clogheen | Gallahue, John | Article in Book | | 2004 |
| The pattern day | MacMahon, Bryan | Article in Book | | 2012 |
| The pattern of Mullinakill | Murphy, William | Article in Journal | | 1970 |
| The patterns of Kilmakilloge | Lyne, G. J. | Article in Journal | | 1989 |
| The peace mission of Archbishop Clune | Hopkinson, Michael | Article in Book | | 2008 |
| The peak of Marianism in Ireland, 1930-60 | Donnelly, James S., Jr | Article in Book | | 2000 |
| The Peep O' Day Boys and Defenders in the County Armagh | McEvoy, Brendan | Article in Journal | | 1987 |
| The Penal Laws | McGrath, Charles Ivar | Article in Book | Oxford University Press | 2023 |
| The penal laws | Connolly, Sean J. | Article in Book | | 1990 |
| The penal laws : origins, purpose, enforcement and impact | McGrath, Charles Ivar | Article in Book | | 2021 |
| The penal laws against Irish Catholics : were they too good for them? | Bartlett, Thomas | Article in Book | | 2013 |
| The Penal laws against religion in county Clare in the eighteenth century | Murphy, Ignatius | Article in Journal | | 1983 |
| The penal laws and Irish folk tradition | Danaher, Kevin, 1913-2002 | Article in Journal | | 1962 |
| The penal laws and Irish land | Arkins, T. | Article in Journal | | 1912 |
| The penal laws in county Clare, 1677-1685 | Howard, Leonard | Article in Journal | | 1970 |
| The penal laws in Ireland, and the documents in the Archives of Propaganda, 1691-1731 | Creighton, Seamus | Article in Journal | | 1962 |
| The penal laws in Limerick, 1670-84 | Howard, Leonard | Article in Journal | | 1969 |
| The penal laws in North Kerry, 1677-1685 | Howard, Leonard | Article in Journal | | 1971 |
| The penal laws, 1691-1760 : church and state from the Treaty of Limerick to the accession of George III | Wall, Maureen (née Mac Geehin) | Monograph or Collective Volume | Dundalgan Press | 1961 |
| The penal period, Kilcock (1540 - 1830) | Rochfort, Jim | Article in Book | | 1999 |
| The people's primate : a memoir of Joseph Cardinal MacRory | Murphy, J. J. | Monograph or Collective Volume | Priory P. | 1946 |
| The persecuted primate | Ó Meachair, Liam S. | Article in Journal | | 1957 |
| The personal, marriage and baptismal register of the Reverend Michael Thomas Merritt, Catholic curate, Dublin, 1800-1805 | | Article in Journal | | 1940 |
| The personality of Mary Aikenhead | O'Carroll, Michael | Article in Journal | | 1958 |
| The personnel of the Catholic convention, 1792-3 | Woods, C. J. (Christopher John) | Article in Journal | | 2003 |
| The Petrine claims of Rome | Oulton, J. E. L. | Monograph or Collective Volume | John T Drought | c. 1930 |
| The Phoenix conspiracy (contd.) | Ó Broin, León, 1902-1990 | Article in Journal | | 1980 |
| The pioneers | Dunne, John J. | Monograph or Collective Volume | Pioneer Total Abstinence Association | 1981 |
| The place of Daniel O'Connell in the liberal Catholic movement of the nineteenth century | Conzemius, Victor | Article in Book | | 1980 |
| The planter and the Gael : cultural dimensions of the Northern Ireland problem | Buchanan, R. H. (Ronald Hull) | Article in Book | | 1982 |
| The plenary synod of Thurles | Ahern, John | Article in Journal | | 1951 |
| The plundering and burning of churches in Ireland, 7th to 16th century | Lucas, A. T. | Article in Book | | 1967 |
| The poetry of Canon Anthony Fahy O.P. (1805-71) | Fahy, Anthony, O.P., 1805-1871 | Article in Journal | | 2012 |
| The political background to the establishment of Maynooth College | O'Connell, Maurice R. | Article in Journal | | 1956 |
| The political behavior of the English Catholics, 1850-67 | Altholz, Josef Lewis, 1933- | Article in Journal | | 1964 |
| The political involvement of the Catholic clergy in Ireland, 1922-1937 | Murray, Patrick | Thesis | | 1997 |
| The political scene in Northern Ireland, 1926-1937 | McCracken, J. L. | Article in Book | | 1967 |
| The politician - a reassessment | McMahon, Deirdre | Article in Journal | | 1998 |
| The politicization of the Irish Catholic bishops, 1800-1850 | MacDonagh, Oliver | Article in Journal | | 1975 |
| The politics of a divided society | Beaumont, Joan | Article in Book | | 1995 |
| The politics of antagonism : understanding Northern Ireland | McGarry, JohnO'Leary, Brendan | Monograph or Collective Volume | Athlone Press | 1993 |
| The politics of Cardinal McCabe, archbishop of Dublin, 1879-85 | Woods, C. J. (Christopher John) | Article in Journal | | 1973 |
| The politics of clerical radicalism in the 1790s | Cullen, L. M. (Louis Michael) | Article in Book | | 1997 |
| The politics of Paul Cullen | Delaney, John Francis Pius | Thesis | | 1984 |
| The politics of the "Protestant Ascendancy" : County Galway 1650-1832 | Kelly, James, 1959- | Article in Book | | 1996 |
| The poor belong to us : Catholic charities and American welfare | Brown, Dorothy M.McKeown, Elizabeth | Monograph or Collective Volume | Harvard University Press | 1997 |
| The Poor Clare Order of nuns in Ireland | Ó Cuilinn, Peader | Article in Journal | | 2015 |
| The Poor Sisters of Nazareth and Derry : 1892-1992 | Canning, B. J. (Bernard J.) | Monograph or Collective Volume | John Burns | 1992 |
| The Pope's children, génération lyrique. The decline of Catholic practices in Ireland's Celtic Tiger and Quebec's Révolution tranquille | Matte, Isabelle | Article in Journal | | 2007 |
| The Pope's green island | Ryan, William | Monograph or Collective Volume | Nisbet | 1912 |
| The Pope's Irish Battalion, 1860 | Doyle, Robert | Article in Journal | | 2010 |
| The Pope's man in Ireland : the mission of Nuncio Rinuccini 1645-1649 | Ó Conluain, Proinsias | Article in Journal | | 1995 |
| The pope, the prelate, the soldiers and the controversy : Paul Cullen and the Irish Papal Brigade | O'Connor, Anne | Article in Book | | 2011 |
| The pope, the Protestants, and the Irish : papal aggression and anti-Catholicism in mid nineteenth-century England | Klaus, R. J. | Monograph or Collective Volume | | 1987 |
| The pope’s man in London: Anglo-Vatican relations, the nuncio question and Irish concerns, 1938-82 | Ó Corráin, Daithí | Article in Journal | | 2020 |
| The population of Dublin in the eighteenth century with particular reference to the proportions of Protestants and Catholics | Fagan, Patrick, 1922-2011 | Article in Journal | | 1991 |
| The port of tears : the life of Father John Sullivan, S. J. | Bodkin, Mathias | Monograph or Collective Volume | Burns & Oates | 1954 |
| The post-Reformation bishops of Kerry | O'Ryan, J. C. | Article in Journal | | 1997 |
| The post-Reformation Catholic bishops of Kilfenora | Coen, Martin | Article in Journal | | 1969 |
| The Power boy from Eyon | Ryan, Christopher | Article in Journal | | 1995 |
| The practice of religious controversy in Dublin, 1600-1641 | Gaffney, Declan | Article in Book | | 1989 |
| The prayers before Mass on Sundays and holidays in Ireland | Brady, John, d.1963 | Article in Journal | | 1947 |
| The Preacher and the Prelate: The Achill Mission Colony and the battle for souls in Famine Ireland | Byrne, Patricia | Monograph or Collective Volume | Merrion Press | 2018 |
| The presbyterian synod and catholic emancipation, 1825-9 | Gallagher, J.R. | Thesis | | 1970 |
| The preservation and management of the archives of the Roman Catholic church in Ireland, 1850-2005 | Cosgrave, MarianneSheehy, David C. | Article in Book | | 2006 |
| The price of a wife? the priest and the divorce trial | Cunningham, Anne E. | Monograph or Collective Volume | Anchor Books Australia | 2013 |
| The price of freedom : Edmund Rice, educational leader | McLaughlin, Denis | Monograph or Collective Volume | David Lovell Publishing, in association with The Trustees of the Christian Brothers (Queensland) | 2007 |
| The priest and the Mass in Irish place-names | Mac Aodha, Breandán S. | Article in Journal | | 1992 |
| The priest in politics | Flannery, Austin | Article in Book | | 2000 |
| The priest in the Gaelic folklore of Nova Scotia | Wilsen, Kenneth E. | Article in Journal | | 1996 |
| The priesthood of St Oliver | Ó Fiaich, Tomás | Article in Journal | | 1975 |
| The priests and Young Ireland in 1848 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1948 |
| The priests of Knockcroghery, St Johns and Rahara | Feeley, Donald | Article in Journal | | 2005 |
| The priests of the diocese of Limerick, 1878-1917 | Tobin, Matthew | Thesis | | 2006 |
| The priests of the parish of Muckalee | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priests of the parish of St. John's, Kilkenny | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priests of the parish of St. Patrick's, Kilkenny | Carrigan, William, 1860–1924 | Article in Journal | | 1883 |
| The priory and parish of Killeigh | Comerford, M., P.P. | Article in Journal | | 1883 |
| The private estate of James II | Kingston, John | Article in Journal | | 1960 |
| The problem of religious dissent in Ireland, 1660-1740 | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Journal | | 1945 |
| The Protestant ascendancy in Ireland from the American revolution to the Act of Union, 1776-1801 | Asch, Ronald G. | Article in Book | | 1993 |
| The Protestant Association and the anti-Maynooth agitation of 1845 | Cahill, G. A. | Article in Journal | | 1957 |
| The Protestant community in Ulster, 1825-45 : a society in transition | Curran, Darragh | Monograph or Collective Volume | Four Courts | 2014 |
| The protestant crusade in Ireland, 1800-70 : a study of protestant-catholic relations between the Act of Union and Disestablishment | Bowen, Desmond | Monograph or Collective Volume | Gill & Macmillan | 1978 |
| The Protestant crusade, 1800-1860 | Billington, R. A. | Monograph or Collective Volume | [s.n.] | 1938 |
| The Protestant response to repeal : the case of the Dublin working class | Hill, Jacqueline R. | Article in Book | Clarendon Press | 1980 |
| The protestants and catholic emancipation | Day, John P. | Thesis | | 1973 |
| The publisher James Moore and his Dublin edition of the "Encyclopedia Britannica": a notable eighteenth-century publication | Kafker, Frank A.Loveland, Jeff | Article in Journal | | 2011 |
| The pure stream : the story of St Canice's parish church, Finglas | Robinson, Theo | Monograph or Collective Volume | Theo Robinson | 1993 |
| The purpose of Cardinal Ó Fiaich | Faul, Denis | Article in Journal | | 1991 |
| The quarantine of Archbishop Mannix : a British preventive policy during the Anglo-Irish troubles | Hachey, Thomas E. | Article in Journal | | 1970 |
| The quarrel among the Roman Catholic hierarchy over the national system of education in Ireland, 1838-41 | Larkin, Emmet | Article in Book | | 1964 |
| The queen of Ireland | Concannon, Helena | Article in Journal | | 1940 |
| The queen of Ireland : an historical account of Ireland's devotion to the Blessed Virgin | Concannon, Helena | Monograph or Collective Volume | Gill | 1938 |
| The Queen of the Hearth | Dinneen, Patrick Stephen, 1860-1934 | Monograph or Collective Volume | University College Dublin Press | 2013 |
| The quiet leader : the episcopacy of John Cardinal D'Alton, 1946-63 | Ó Corráin, Daithí | Article in Journal | | 2006 |
| The quiet tragedy of Canon Sheehan | Garvin, Tom | Article in Journal | | 2009 |
| The radical face of Paul Cardinal Cullen | Corish, Patrick J. | Article in Book | | 1985 |
| The Raphoe marriage registers : some eighteenth century Catholic marriages in the Protestant registers of the diocese of Raphoe | MacDonagh, J. C. T. | Article in Journal | | 1960 |
| The rationale of Catholic education | Loughran, Gemma | Article in Book | | 1987 |
| The re-energising of Catholicism, 1790–1880 | Barr, Colin | Article in Book | | 2018 |
| The re-establishment of Tuam C.B.S. | Waldron, John J. | Article in Book | | 1997 |
| The real archbishop Mannix from the sources | | Monograph or Collective Volume | Connor Court | 2015 |
| The rebel priests of Mullagh - Fr Pat Gaynor, Fr Michael McKenna and the War of Independence | Hensey, Aine | Article in Journal | | 2021 |
| The reception of My Lord of Ormonde at Kilkenny upon the first peace 1646 | Fletcher, Alan J. | Article in Journal | | 2003 |
| The rector and students of the Irish College at Alcalá de Henares, Spain 1649-1785 | O Connell, Patricia | Article in Journal | | 1997 |
| The rector who wouldn't pray for rain | Semple, Patrick | Monograph or Collective Volume | Mercier Press | 2007 |
| The rectors and students of the Irish College at Alcalá de Henares, Spain 1649-1785 | O Connell, Patricia | Article in Journal | | 1996 |
| The recusancy revolt of 1603 : a reinterpretation | Sheehan, A. J. (Anthony J.) | Article in Journal | | 1983 |
| The Redemptorists in Ireland, 1851-2011 | McConvery, Brendan | Monograph or Collective Volume | Columba | 2012 |
| The Redingtons of Clarinbridge : leading Catholic landlords in the 19th century | Murphy, Joseph | Monograph or Collective Volume | [Joseph Murphy] | 1999 |
| The redoubtable John Hennessy, first archbishop of Dubuque | Coogan, M. Jane | Article in Journal | | 1980 |
| The Reformation in Dublin, 1536-1558 (from original sources) | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Longmans, Green | 1926 |
| The Reformation in Ireland under Elizabeth, 1558-1580 (from original sources) | Ronan, Myles V. (Myles Vincent) | Monograph or Collective Volume | Longmans, Green | 1930 |
| The Reformation in Ireland: interpretations old and new | Jefferies, Henry A. | Article in Journal | | 2016 |
| The reformation of Philadelphia catholicism, 1830-1860 | Light, D. | Article in Journal | | 1988 |
| The Reformation, Catholicism and religious change in Co Kildare, 1560-1640 | Cox, Jeffrey | Thesis | | 2016 |
| The regiment of MacElligott 1688-89 | Garland, J. L. | Article in Journal | | 1950 |
| The regiment of Walter Bourke | Murtagh, Diarmuid | Article in Journal | | 1949 |
| The Regional Impact of Irish Catholicism 1700-1850 | Whelan, Kevin | Article in Book | | 1988 |
| The registration of the clergy in 1704 | Ó Fiaich, Tomás | Article in Journal | | 1971 |
| The regular clergy and the episcopate in Ireland, 1600-1650 | Ó hAnnracháin, Tadhg | Article in Book | | 2022 |
| The regulars in the post-reformation period | O'Connell, W. D. | Article in Journal | | 1943 |
| The relations between Church and State in the age of emancipation | Nowlan, Kevin B. | Article in Journal | | 1961 |
| The relations between the Irish catholics and the government from the treaty of Limerick (1691) to the abandonment of the Stuarts by the catholic clergy (1702) | O'Dowd, Thomas D., Rev. | Thesis | | 1945 |
| The relationship between Civil and Catholic parishes | Hickey, Nora | Article in Journal | | 1987 |
| The religious condition of Ireland, 1770-1850 | Yates, Nigel | Monograph or Collective Volume | Oxford University Press | 2006 |
| The religious condition of Ireland, 1770-1850 | Yates, Nigel | Monograph or Collective Volume | Oxford University Press | 2006 |
| The religious context of the women's suffrage campaign in Ireland | Murphy, Cliona | Article in Journal | | 1997 |
| The religious development of Daniel O'Connell, I : from Deist to Roman Catholic | Guilfoyle, James E. | Article in Journal | | 1998 |
| The religious development of Daniel O'Connell, II : the making of a devotional Catholic | Guilfoyle, James E. | Article in Journal | | 1998 |
| The religious difficulty under home rule : 1, the nonconformist view | Prenter, Samuel | Article in Book | | 1912 |
| The Religious Factor in the 1798 Rebellion in Wexford | Whelan, Kevin | Article in Book | | 1987 |
| The religious life of the Catholic laity of Dublin, 1920-40 | Hartigan, Maurice | Article in Book | | 2000 |
| The religious mission of the Irish people and Catholic colonization | Spalding, John Lancaster | Monograph or Collective Volume | Arno P. | 1978 |
| The religious question in Ireland | Hammond, Thomas C. | Article in Journal | | 1913 |
| The religious sisters and brothers of the diocese of Kilmore | Smith, Gerald | Monograph or Collective Volume | Cumann Seanchais Bhre´ifne | 2010 |
| The Remaking of Irish-America, 1845-1880 | Doyle, David Noel | Article in Book | | 2006 |
| The remarkable Luke Cullen O.D.C., (1793-1859) | Scannell, James | Article in Journal | | 1999 |
| The remonstrance of December 1661 and Catholic politics in restoration Ireland | Creighton, Anne | Article in Journal | | 2004 |
| The remonstrance of Irish princes, 1317 | Scully, Diarmuid | Article in Journal | | 2013 |
| The renewal of Catholic religious culture in eighteenth-century Dublin | Begadon, Cormac | Article in Book | | 2011 |
| The reorganisation of the Irish church, 1603-41 | Corish, Patrick J. | Article in Journal | | 1957 |
| The resident church : middle class catholics and the shaping of American catholic identity, 1889-1899 | Robichaud, Paul G. | Monograph or Collective Volume | University of California Press | 1989 |
| The response of the Roman Catholic Church to the introduction of vocational education in Ireland, 1930-1942 | Clark, Mary | Article in Journal | | 2012 |
| The Restoration 1660-1688 | Seaward, Paul | Article in Book | | 1986 |
| The Restoration and the Jacobite War (1660-91) | Simms, J. G. (John Gerald) | Article in Book | | 1967 |
| The Retraction of Peter Walsh, OFM, 1688 | Fennessy, Ignatius | Article in Journal | | 1992 |
| The Reverend John McKenna, Loyalist Chaplain | Kelly, Edward | Article in Journal | | 1933 |
| The revival of plainchant in the Roman Catholic church in Ireland, 1777-1858 : some sources and their commerce with England | Zon, Bennett M. | Article in Book | | 1996 |
| The revival of the anti-Maynooth campaign in Britain, 1850-1852 | Wallis, Frank | Article in Journal | | 1987 |
| The rhetoric of religious innovation : perceptions and reactions to the Catholic charismatic renewal in Ireland | Szuchewycz, B. G. | Article in Journal | | 1993 |
| The right of patronage of the Maguires of Tempo | Faulkner, Anselm | Article in Journal | | 1977 |
| The Right Reverend James Magaurin, D.D. Titular Bishop of the Diocese of Ardagh examined at The Select Committee appointed to enquire into The State of Ireland, 1825 | O'Hara, Aidan | Article in Journal | | 2008 |
| The rise and fall of the Irish Franciscan monasteries | Meehan, C. P. | Monograph or Collective Volume | | 1869 |
| The rise in sectarianism in 1820s Ireland | Moffitt, Miriam | Article in Book | | 2013 |
| The rise of recusancy among the Dublin patricians, 1580-1613 | Lennon, Colm | Article in Book | | 1989 |
| The rise of the Catholic middle class : O'Connellites in County Longford, 1820-50 | O'Ferrall, Fergus | Article in Book | | 2010 |
| The rise of the Rainbow Chasers: Advanced Irish political nationalism in Britain 1916-22 | Gannon, Darragh | Article in Journal | | 2014 |
| The rising of 1641 and the Catholic confederacy, 1641-5 | Corish, Patrick J. | Article in Book | | 1976 |
| The Road to Farndon Field : explaining the massacre of the Royalist women at Naseby | Stoyle, Mark | Article in Journal | | 2008 |
| The role and influence of the Irish Missions of the Society of Jesus in the implementation of a Counter Reformation among the Old English in Ireland, 1542-1633 | Jackson, Brian | Thesis | | 2008 |
| The role of Ne Temere in the decline of an Irish custom regarding the religious affiliation of the children of mixed marriages | Buck, Jesse | Article in Journal | | 2011 |
| The Role of the Catholic Priest in the 1798 Rebellion in County Wexford | Whelan, Kevin | Article in Book | | 1987 |
| The role of the Roman Catholic and Church of Ireland in the distribution of relief during the 1822 famine in County Roscommon | Casey, Brian | Article in Book | NA | 2018 |
| The role of Vincentian parish missions in the 'Irish counter-reformation' of the mid nineteenth century | Murphy, James H. | Article in Journal | | 1984 |
| The role of women and religion in the 1916 Rising | Murphy, Sandra | Article in Journal | | 2015 |
| The Roman Catholic chapel in Drumbanaway | Harkness, Dick | Article in Journal | | 1994 |
| The Roman Catholic Church and economic growth in nineteenth-century Ireland | Kennedy, Liam, 1946- | Article in Journal | | 1978 |
| The Roman Catholic Church and the emergence of the modern Irish political system, 1874-1878 | Larkin, Emmet | Monograph or Collective Volume | Four Courts | 1996 |
| The Roman Catholic church and the Home Rule movement in Ireland, 1870-1874 | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1990 |
| The Roman Catholic Church and the Irish Civil War | Murray, Patrick | Article in Journal | | 2015 |
| The Roman Catholic Church and the Irish poor | Samuel, Raphael Elkan, 1934-1996 | Article in Book | | 1985 |
| The Roman Catholic Church and the Nineteenth Century Irish Diaspora | Gilley, Sheridan | Article in Journal | | 1984 |
| The Roman Catholic Church and the Plan of Campaign in Ireland, 1886-1888 | Larkin, Emmet | Monograph or Collective Volume | Cork University Press | 1978 |
| The Roman Catholic Church in Ireland 1800-1922 : A survey of recent historiography | Silke, John J. | Article in Journal | | 1975 |
| The Roman Catholic church in Ireland : 1898-1918 | Miller, David William, 1940- | Article in Journal | | 1968 |
| The Roman Catholic Church in Ireland and Sir Robert Peel's administration 1841-1846 | Kerr, Donal A. | Thesis | | |
| The Roman Catholic church in Ireland and the fall of Parnell | Larkin, Emmet | Monograph or Collective Volume | University of North Carolina Press | 1979 |
| The Roman Catholic church in Ireland and the fall of Parnell | Larkin, Emmet | Monograph or Collective Volume | Liverpool University Press | 1979 |
| The Roman Catholic church in Ireland, 1898-1918 | Miller, David William, 1940- | Article in Book | | 1987 |
| The Roman Catholic church, the state and Al Smith | Smylie, James H. | Article in Journal | | 1960 |
| The Roman Catholic ethos of Irish secondary schools, 1924-62, and its implications for teaching and school organisation | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1990 |
| The Roman Catholic hierarchy and the fall of Parnell | Larkin, Emmet | Article in Journal | | 1961 |
| The Roman Catholic mission to the Irish in London | Gilley, Sheridan | Article in Journal | | 1969 |
| The Roman Catholic Mission to the Irish in London, 1840-60 | Gilley, Sheridan | Article in Journal | | 1969 |
| The Roman Catholic parish registers of Wexford town from c.1672 : some considerations of their significance and use in historical research | Rafferty, Celestine | Article in Journal | | 1994 |
| The Roman Catholic peerage and the Crown in late seventeenth-century Ireland | Ellwood, Mark Richard | Thesis | | 2012 |
| The Roman mould of the Australian Catholic church | Molony, John N. | Monograph or Collective Volume | Melbourne University Press | 1969 |
| The roots of violence : Catholic grievances and Irish nationalism during the civil rights period | Hewitt, Christopher | Article in Book | | 1991 |
| The Rothe collection: a legacy of the Counter-Reformation in Ireland | Morgan, Hiram | Article in Journal | | 2013 |
| The round tower 'evil eye' and holy well at Balla, Co. Mayo | Rynne, Etienne | Article in Book | | 1998 |
| The Roundwood Healyites, an unseemly row in the Chapel yard | 'The Glendalough Goose' | Article in Journal | | 1997 |
| The sacred in the secular : religious change in Catholic Ireland, 1500-1700 : the fifth annual lecture in Catholic studies, sponsored by the Edmundite trust fund for Catholic Studies and Ministry at St. Michael's College, 21 April 1993 | Gillespie, Raymond | Monograph or Collective Volume | St Michael's College | 1993 |
| The sad tale of Michael Welsh (the reluctant Ribbonman) | Kerrigan, John | Article in Journal | | 1990 |
| The saints and martyrs of Ireland | Montagne, H. Patrick | Monograph or Collective Volume | Smythe | 1981 |
| The Salamanca archives | Richardson, Regina Whelan | Article in Book | | 1995 |
| The Salamanca letters : a catalogue of correspondence (1619-1871) from the Archives of the Irish colleges in Spain in the library of St. Patrick's College, Maynooth, Ireland = Las cartas salmantinas : un catalogo de correspondencia (1619-1871) de los colegios irlandeses in Espana en la biblioteca del colegio de San Patricio, Maynooth, Irlanda | | Monograph or Collective Volume | St. Patrick's College | 1995 |
| The schools cultural studies project : a contribution to peace | Robinson, Alan | Monograph or Collective Volume | [s.n.] | 1981 |
| The Scottish response to the 1641 rebellionin Connacht : the case of Sir Frederick Hamilton | Duignan, Aoife | Article in Book | | 2016 |
| The Scullys of Kilfeacle : Catholic middlemen of the 1770s | O'Donoghue, James, d. 2004 | Article in Journal | | 1989 |
| The sea apostolate in Ireland | Anson, Peter F. | Monograph or Collective Volume | Irish Messenger Publications | 1946 |
| The search for missing friends - volume 1 : 1831-1850 | Ahern, Dennis J. | Article in Journal | | 1998 |
| The search for the Celtic rite : the TCD Sarum divine office MSS reassessed | Brannon, Patrick | Article in Book | | 1993 |
| The second burial of Bishop Shanahan | Forristal, Desmond | Monograph or Collective Volume | Veritas | 1990 |
| The Second Reformation in west Galway: Alexander R. Dallas and the Society for Irish Church Missions to the Roman Catholics, 1849-1859 | Majerus, Pascal André | Thesis | | 1991 |
| The secular and the radical in Irish associational culture of mid-Victorian Glasgow | McBride, Terence | Article in Journal | | 2010 |
| The secular clergy of the archdiocese of Armagh, 1518-58 | Jefferies, Henry Allen | Thesis | | 1996 |
| The secular priests of the diocese of Ferns : lists of priests who served in each parish, with short biographical notes | Gahan, John | Monograph or Collective Volume | Editions de Signe | 2000 |
| The selection of the American Catholic hierarchy, 1789-1851 | Manfra, Jo Ann | Article in Journal | | 1990 |
| The service of Roman Catholics in the British Army 1750 to 1830 | Fontana, V. J. L. | Article in Journal | | 2006 |
| The seventeenth century | Millett, Benignus | Article in Book | | 1991 |
| The shaping of Sunday : Sunday and Eucharist in the Irish tradition | Ryan, Vincent | Monograph or Collective Volume | Veritas | 1997 |
| The siege of Derry | Macrory, Patrick | Monograph or Collective Volume | | 1988 |
| The siege of Derry in Ulster protestant mythology | McBride, Ian | Monograph or Collective Volume | Four Courts | 1997 |
| The siege of Derry, 1689 | McCartney, Peter | Monograph or Collective Volume | Guildhall Press | 1988 |
| The siege of Golden Castle, James Butler of Boytonrath, captain in the Confederate Catholic army, 1642-53 | Butler, Toby | Article in Journal | | 1994 |
| The siege of Paris seen from Collège des Irlandais by Canon Ouin-la-Croix | | Article in Book | | 1978 |
| The sins of our fathers : roots of conflict in Northern Ireland | Edwards, Owen Dudley | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The Sisters of Crossmolina | Anonymous | Article in Journal | | 1990 |
| The Sisters of Mercy Ennis | O'Brien, Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy | 1992 |
| The Sisters of Mercy of Birr and Nenagh | O'Brien, Sister Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy, Killaloe Mercy Generalate | 1994 |
| The Sisters of Mercy of Kilrush and Kilkee | O'Brien, Pius | Monograph or Collective Volume | Congregation of the Sisters of Mercy | 1997 |
| The situational dimension of the educational apostolate and the configuration of the learner as a cultural and political subject : the case of Our Lady of the Missions in the Canadian prairies | Bruno-Jofré, Rosa | Article in Book | | 2016 |
| The sixteenth century | Lennon, Colm | Article in Book | | 1991 |
| The social and cultural background of a Counter-Reformation episcopate 1618-60 | Cregan, Donal F. | Article in Book | | 1979 |
| The social composition of the Catholic convention, 1792-3 | Woods, C. J. (Christopher John) | Article in Book | | 2003 |
| The social composition of the senior officers of the Royal Irish Constabulery, 1881-1911 | Campbell, Fergus | Article in Journal | | 2009 |
| The social teaching of the Catholic Church : to what purpose? to what effect? | O'Shea, Eamon | Article in Journal | | 1990 |
| The socializationof uncertainty : the Ancient Order of Hibernians in Butte, Montana 1880-1925 | Emmons, David M. | Article in Journal | | 1994 |
| The Society for Irish Church Missions to the Roman Catholics : Philanthropy or Bribery? | Moffitt, Miriam | Article in Journal | | 2006 |
| The Society for Irish Church Missions to the Roman Catholics, 1849-1950 | Moffitt, Miriam | Thesis | | 2006 |
| The Society of Jesus in Ireland, Scotland, and England, 1598–1606: “Lest Our Lamp be Entirely Extinguished” | McCoog, Thomas M. | Monograph or Collective Volume | BRILL|Institutum Historicum Societatis Iesu | 2017 |
| The Society of Jesus of Ireland, Scotland, and England 1541-1588 : 'our way of proceeding?' | McCoog, Thomas M. | Monograph or Collective Volume | Brill | 1996 |
| The Society of St Patrick for Foreign Missions | Moynagh, J. | Article in Journal | | 1944 |
| The Society of St Vincent de Paul in Carlow | O'Neill, Pat | Article in Journal | | 2011 |
| The Society of St Vincent de Paul in Dublin, 1926-1975 | Ní Chearbhaill, Máire | Thesis | | 2008 |
| The Society of St Vincent de Paul in Ireland : 170 years of fighting poverty | | Monograph or Collective Volume | New Island | 2014 |
| The Society of St Vincent de Paul in Ireland, 1845-1945 | Dillon, T. | Article in Journal | | 1945 |
| The Society of the Sacred Heart ... 1875 | Finlay, John | Article in Journal | | 2020 |
| The society of the Sacred Heart in Armagh, 1851-9 | Kilroy, Phil | Article in Journal | | 1979 |
| The sodality of Our Lady in Ireland in the nineteenth century | O'Conor, Charles | Article in Journal | | 1945 |
| The sources of Trí Bior-Ghaoithe an Bháis : another French sermon | Cunningham, Bernadette | Article in Journal | | 1999 |
| The Spanish Court, Ecclesiastical Patronage, and the Irish College of Santiago de Compostela (1611–17) | O’Scea, Ciaran | Article in Book | | 2018 |
| The Spanish monarchy and Irish mercenaries : the wild geese in Spain 1618-68 | Stradling, R. A. | Monograph or Collective Volume | Irish Academic Press | 1994 |
| The Spanish-language 'Manifesto' of the Catholic Confederation of Ireland, 1642 | Darcy, Eamon | Article in Journal | | 2014 |
| The spirit of Irish sectarianism | Buckley, Anthony D. | Article in Journal | | 1989 |
| The spiritual government of the entire world : a memorial for the Irish College, Rome, January 1783 | Carroll, Clare | Article in Book | | 2008 |
| The splendid cause : the Catholic action movement in Ireland in the twentieth century | Curtis, Maurice | Monograph or Collective Volume | Original Writing | 2008 |
| The splendid cause : the Missionary Society of St. Columban, 1916-1954 | Collins, Neil, 1938- | Monograph or Collective Volume | Columba | 2009 |
| The St Louis Catholic press and political issues, 1845-61 | Cross, Jasper W. | Article in Journal | | 1969 |
| The St. Louis Irish : an unmatched Celtic community | Faherty, William Barnaby | Monograph or Collective Volume | Missouri Historical Society Press | 2001 |
| The state of religion in the province of Leinster during the 17th century, illustrated by extracts from synodical decrees | Comerford, M., P.P. | Article in Journal | | 1879 |
| The Stations | Collins, Kit | Article in Journal | | 2007 |
| The Stations | Cadogan, Anne | Article in Journal | | 2001 |
| The stations, part 1 | Quain, James T. | Article in Journal | | 1990 |
| The stations, part 2 | Quain, James T. | Article in Journal | | 1991 |
| The statue on the hill | Anonymous | Article in Journal | | 1998 |
| The Statutes of the Irish college, Toulouse, 'le séminaire royal de Sainte Anne' | Ferté, Patrick | Article in Journal | | 2010 |
| The Stepinic file | Agee, Chris | Article in Book | | 2003 |
| The Stockdales of Ballynarry | Crea, Willie | Article in Journal | | 2002 |
| The Stockport riots of 1852 : a study of anti-Catholic and anti-Irish sentiment | Millward, Pauline | Article in Book | | 1985 |
| The story of Benada | Butler, Katherine | Monograph or Collective Volume | Sisters of Charity | 1983 |
| The story of Lieutenant Robert Stanton, 6th battalion The Royal Dublin Fusiliers | Burke, Tom | Article in Journal | | 1997 |
| The story of Matt Talbot | Carroll, Malachy Gerard | Monograph or Collective Volume | Mercier Press | 1948 |
| The story of Mercy in Derry | Bolster, Angela | Article in Book | | 2000 |
| The story of the Canon Sheehan monument at Doneraile | O'Connor, J. J. | Article in Journal | | 1946 |
| The story of the Loreto convent in Coleraine | Coyle, Madeleine | Article in Journal | | 2005 |
| The story of the native Irish sisters who entered the Congregation of the Sisters, Servants of the Immaculate Heart of Mary Scranton, Pennsylvania | Keenan, M. Michel | Monograph or Collective Volume | Congregation of the Sisters, Servants of the Immaculate Heart of Mary Scranton, Pennsylvania | 2006 |
| The story of the Vincentians. a record of the achievements in Ireland and Britain of the priests and lay-brothers of the congregation of the mission founded by St Vincent de Paul | Purcell, Mary | Monograph or Collective Volume | All Hallows College | 1973 |
| The strange case of Colonel Robert Byrne, 1667 | Meagher, John | Article in Journal | | 1960 |
| The structure of voter preferences : the 1921, 1925, 1973 and 1975 Northern Irish parliamentary elections | Dutter, Lee E. | Article in Journal | | 1982 |
| The struggle for Catholic emancipation in county Longford 1824-9 | O'Ferrall, Fergus | Article in Journal | | 1978 |
| The Stuart nomination of Irish bishops, 1687-1765 | Giblin, Cathaldus | Article in Journal | | 1965 |
| The succession of parish priests in the archdiocese of Dublin, 1771-1851 | O'Riordan, W. M. | Article in Journal | | 1956 |
| The support of Connacht's Catholic hierarchy for the Legislative Union of Great Britain and Ireland, 1800 | Hogan, Patrick | Article in Journal | | 2006 |
| The support of the Catholic clergy in Ireland, 1750-1850 | Murphy, John A. | Article in Book | | 1965 |
| The suppression and restoration of the Society of Jesus in Ireland | Savage, Roland | Article in Journal | | 1942 |
| The Survival of an Irish Culture in Britain 1800-1845 | Durey, Michael | Article in Journal | | 1982 |
| The survival of the Catholic Church in Ulster in the era of the flight of the earls and the Ulster plantation | Ó hAnnracháin, Tadhg | Article in Book | | 2010 |
| The Sword and the Prayerbook : Ideals of Authentic Irish Manliness | Nugent, Joseph | Article in Journal | | 2008 |
| The synod of Thurles, 1850 : discipline and education | Doherty, Gillian M.,O'Riordan, Tomás | Article in Book | | 2011 |
| The Synod of Thurles, 1850 : documents | MacCarthy, John Paul,O'Riordan, Tomás | Article in Book | | 2011 |
| The Talbots and Carton House in the seventeenth century | Byrne, Joseph | Article in Journal | | 2013 |
| The Taylors of Swords | Marks, Bernadette | Article in Book | | 1998 |
| The testament of Mary : the Irish account of the death of the Virgin | Willard, Rudolph | Article in Journal | | 1937 |
| The Theatre Royal bottle riot of 1822 and the Orange Order in Dublin | O'Reilly, Hugh | Article in Journal | | 2019 |
| The theft of the relic of Holy Cross Abbey | Fennessy, Ignatius | Article in Journal | | 2000 |
| The theology and liturgy of conversion from Catholicism to Anglicanism | Power, Thomas P. | Article in Book | | 2005 |
| The Thoresby Miscellany, 16 | Anonymous | Monograph or Collective Volume | | 1974 |
| The three lives of Gavan Duffy | Pearl, C. | Monograph or Collective Volume | O'Brien Press|New South Wales University Press | 1979 |
| The Tilson case : church and state in 1950s Ireland | Jameson, David | Monograph or Collective Volume | Cork University Press | 2023 |
| The times and life of Nicholas Sweetman, Bishop of Ferns, (1744-86) | Furlong, Nicholas | Article in Journal | | 1983 |
| The Tirry documents in the Archives de France, Paris | | Article in Journal | | 1957 |
| The Tirry documents in the Augustinian General Archives | Hackett, M. B. | Article in Journal | | 1957 |
| The tomb of Miler Magrath. The monument and the message | Ryan, Patrick J. | Article in Journal | | 2020 |
| The tragedy of belief : division, politics, and religion in Ireland | Fulton, John | Monograph or Collective Volume | Clarendon Press | 1991 |
| The transcendent role of Catholic discourse in the Irish Land War | Kane, Anne | Article in Book | | 2013 |
| The transformation of the Irish College, Paris: war, education, and administration, 1870–1918 | Stover, Justin Dolan | Article in Book | | 2018 |
| The transformation of the Society of United Irishmen into a mass-based revolutionary organisation, 1794-6 | Curtin, Nancy J. | Article in Journal | | 1985 |
| The Travails of Contemporary Irish Catholicism from John Paul II to Pope Francis | Ó Corráin, Donnchadh | Article in Book | Oxford University Press | 2023 |
| The Treaty of Limerick | Simms, J. G. (John Gerald) | Monograph or Collective Volume | Dundalgan Press | 1961 |
| The trial of Oliver Plunkett | Curtayne, Alice | Monograph or Collective Volume | Sheed & Ward | 1953 |
| The trial of Oliver Plunkett | Curtayne, Alice | Article in Journal | | 1954 |
| The trials and tribulations of Fr John Quinn (1827-88), Middletown | Gilmore, Brian | Article in Journal | | 2012 |
| The tribes at Louvain : Francis Martin, S.T.D. | Spelman, J. P. | Article in Journal | | 1886 |
| The Tridentine evolution of modern Irish Catholicism, 1563-1962 : a re-examination of the "devotional revolution" thesis | McGrath, T. G. | Article in Journal | | 1991 |
| The Tridentine evolution of modern Irish Catholocism, 1563-1962 : a re-examination of the 'devotional revolution' thesis | McGrath, Thomas G. | Article in Journal | | 1991 |
| The triumph of the Catholic Committee : the Irish Catholic Campaign, 1790-1793 | Selzer, Eric | Thesis | | |
| The trouble with France: Making Scots priests in France, 1818–78 | Saarinen, Iida | Article in Book | | 2018 |
| The troubled contemporary Irish Catholic church | Donnelly, James S., Jr | Article in Book | | 2002 |
| The truth about Ulster | Moore, Frank Frankfort | Monograph or Collective Volume | Nash | 1914 |
| The Truth Teller and Irish Americana of the 1820s | Moriarty, Thomas F. | Article in Journal | | 1964 |
| The Turas (Sts Peter & Paul) | Carr, Kathleen | Article in Journal | | 1994 |
| The twin churches book, Wexford, 1858-2008 | | Monograph or Collective Volume | Carraig Mór House | 2008 |
| The Ulster canal and sectarian strife | Dillon, Charles | Article in Journal | | 1988 |
| The Ulster Catholic | McCullagh, Francis | Article in Journal | | 1914 |
| The Ulster Defence Regiment and the question of Catholic recruitment, 1970-1972 | Ó Faoleán, Gearóid | Article in Journal | | 2015 |
| The Ulster rebellion of 1641 in county Cavan | Corbett, Freyne | Article in Journal | | 2010 |
| The Ulster refuge of the Northern army | Casway, Jerrold | Article in Journal | | 2006 |
| The Ulster rising of 1641 | Bradshaw, Brendan | Article in Book | | 1998 |
| The ultramontane spirituality of Paul Cullen | Rafferty, Oliver P. | Article in Book | | 2011 |
| The undertheorisation of sectarianism | McVeigh, Robbie | Article in Journal | | 1990 |
| The unfortunate Michael Campbell : a study of two Defender documents 1796 | Mac Giolla Choille, Breandán | Article in Journal | | 1998 |
| The union of Navan in 1766 | Gurrin, Brian | Article in Journal | | 2003 |
| The United Irishmen in Wexford | Cullen, L. M. (Louis Michael) | Article in Book | | 1996 |
| The United States of America : the Irish clergyman | McAvoy, T. T. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The University question | McGrath, Fergal | Article in Book | | 1968 |
| The unpopular front : Catholic revival and Irish cultural identity, 1932-48 | Riordan, Susannah | Article in Book | | 2000 |
| The Ursulinés in Thurles : the first hundred years, 1787-1887 | Lillis, Mercedes | Article in Book | | 1989 |
| The uses and abuses of censorship : God, Ireland and the battle to extend censorship Post 1929 | Keating, Anthony | Article in Journal | | 2014 |
| The uses of 23 October 1641 and Irish Protestant celebrations | Barnard, T. C. (Toby Christopher) | Article in Journal | | 1991 |
| The Vatican, the Bishops and Irish Politics 1919-39 | Keogh, Dermot | Monograph or Collective Volume | Cambridge University Press | 1986 |
| The venerable Archdeacon John Begley, V. G. | Anonymous | Article in Journal | | 1942 |
| The Venerable Edel Quinn - the Blackrock connection | Farragher, Sean | Article in Journal | | 2008 |
| The venerable John Joseph Steiner: a German-Irish saint? | Buck, William | Article in Journal | | 2012 |
| The Veto controversy, including Thomas Moore's letter to the Roman Catholics of Dublin | | Monograph or Collective Volume | Athol | 1985 |
| The view from Breóghan's Tower | Cunningham, Bernadette | Article in Book | | 2015 |
| The Village Stations in the 1920s | Grehan, Margaret | Article in Journal | | 2000 |
| The vision of John Carroll | Hennesey, James | Article in Journal | | 1979 |
| The vision of John Carroll | Hennessy, J. | Article in Journal | | 1979 |
| The visits to Ireland of John Hughes, Archbishop of New York from 1840 to 1862 | McKenna, Ellen | Article in Journal | | 2009 |
| The voice of the Virgin : Irish visionaries and their testimony | Eipper, Chris | Article in Book | | 1996 |
| The voices of Catholic women in Ireland, 1800-1921 | Clear, Caitriona | Article in Book | | 2013 |
| The voyage out : Infant Jesus Sisters, Ireland, 1909-2009 | KilBride, CatherineRaftery, Deirdre | Monograph or Collective Volume | IJS Centenary Committee | 2009 |
| The Wadding library of Saint Isidore's College, Rome, 1622-1700 | MacMahon, JosephMcCafferty, John | Article in Journal | | 2013 |
| The Waldron priests | Waldron, Kieran | Article in Journal | | 1996 |
| The waning of the green : Catholics, the Irish, and identity in Toronto, 1887-1922 | McGowan, Mark George | Monograph or Collective Volume | McGill-Queen's University Press | 1999 |
| The war in Ireland, 1689-1691 | Murtagh, Harman | Article in Book | | 1990 |
| The wardenship of Galway | Coen, Martin | Monograph or Collective Volume | Kenny's Bookshop | 1984 |
| The wardenship of Galway in the early-nineteenth century | Coen, Martin, Rev. | Thesis | | 1967 |
| The Wastegrass and its Mass Rock | McQuinn, Christopher P. | Article in Journal | | 2012 |
| The Waterloo priest | Fitzgerald, J. J. | Article in Journal | | 1977 |
| The Waterloo Priest. The Reverend William O'Donnell, formerly Ensign William O'Donnell, XXth (East Devonshire) Regiment of Foot | Doherty, Richard | Article in Journal | | 2017 |
| The way back from Rome | Purcell, Mary | Article in Journal | | 1979 |
| The way we were : life and times on the Cooley peninsula | O'Hanlon, Michael | Monograph or Collective Volume | [Cooley parish, St James in Grange] | 2012 |
| The Wexford Catholic community in the later seventeenth century | Murphy, Celestine | Article in Book | | 1990 |
| The Wexford man : Essays in Honour of Nicky Furlong | | Monograph or Collective Volume | Geography Publications | 2007 |
| The Wexford priests in 1798 | Whelan, Kevin | Article in Book | | 1997 |
| The will and foundation of Rev. Eugene Brady, 1767 | Cunningham, T. P. | Article in Journal | | 1965 |
| The will of Friar Martin, 1842 | Martin, Thomas | Article in Journal | | 1952 |
| The will of James Hussey of Smarmore, Co. Louth, 'priest' (A.D.1635) | Hussey, J.Murray, L. P. | Article in Journal | | 1937 |
| The women in the life of Bishop Daniel Delany | Sweetman, Stephen | Article in Journal | | 2020 |
| The women who leave : Irish women writing on emigration | Nichols, K. Madolyn | Thesis | | |
| The work of the Catholic church in the United States of America | Hobart, JohnPacker, WilliamZaratti, Alfonso | Monograph or Collective Volume | Nardini 'Artistic' Publishing Co. | 1856 |
| The world of Daniel O'Connell | McCartney, Donal | Article in Book | | 1980 |
| The world of Geoffrey Keating : history, myth and religion in seventeenth-century Ireland | Cunningham, Bernadette | Monograph or Collective Volume | Four Courts | 2000 |
| The wrath of God : churches and the experience of violence in Northern Ireland | Morrow, Duncan | Article in Book | | 1991 |
| The writer, Canon Sheehan | Stockley, W. F. P. | Article in Journal | | 1941 |
| The Writings and Speeches of Edmund Burke, 9, pt. 1 : The Revolutionary War, 1794-1797; 9, pt. 2 : Ireland | Burke, Edmund, 1729-1797McDowell, R. B. (Robert Brendan), 1913-2011 | Monograph or Collective Volume | | 1991 |
| The writings of Father Luke Wadding, O.F.M. | Mooney, Canice | Article in Journal | | 1958 |
| The written memory of St Mary's University College, Dublin (1893-1912) : the pioneer college for the higher education of Catholic women in Ireland | Cunningham, John M. | Article in Journal | | 2019 |
| The years in Ireland | McHugh, Roger Joseph | Article in Book | | 1945 |
| The ‘British Establishments’, the Irish college in Paris and Restoration France, 1814–30 | Chambers. Liam | Article in Book | | 2018 |
| The ‘recusancy revolt’ of 1603 revisited, popular politics, and civic Catholicism in early modern Ireland | Walter, John | Article in Journal | | 2022 |
| Theatre and cultural politics in Northern Ireland : the Over the Bridge controversy, 1959 | Pilkington, Lionel | Article in Journal | | 1996 |
| Theobald Mathew, O.F.M.Cap : a centenary tribute | Anonymous | Article in Journal | | 1956 |
| Theobald McKenna and the catholic question | Leighton, Douglas Auld | Thesis | | 1985 |
| Theory in the absence of fact : Irish women and the Catholic Reformation | Ó hAnnracháin, Tadhg | Article in Book | | 2003 |
| These traits also endure : contemporary Irish and Irish-American women writers | Ebest, Sally Barr | Article in Journal | | 2003 |
| Theses defended in St Isidore's College, Rome, 1631-1649 | Jennings, Brendan | Article in Journal | | 1959 |
| Thesis abstract : Catholicism in the Province of Armagh, 1603-1641 | Mac Cuarta, Brian | Article in Journal | | 2005 |
| Thesis abstract : The society for Irish church missions to the Roman Catholics,
1849–1950 | Moffitt, Miriam | Article in Journal | | 2007 |
| They brought the good news : modern Irish missionaries | Keaney, Marian | Monograph or Collective Volume | Veritas | 1980 |
| They hanged him in Youghal : Brother Dominic Collins, Irish Jesuit Brother | Clear, John Bedam | Monograph or Collective Volume | Irish Messenger Publications | 1953 |
| They have fooled you again : Michael O'Flanagan (1876-1942) priest, republican, social critic | Carroll, Denis | Monograph or Collective Volume | Columba | 1993 |
| This sacred feeling : patriotism, nation-building and the Catholic church in Newfoundland, 1850-1914 | Lambert, Carolyn | Article in Book | | 2015 |
| This Side of the Alps: Catholic Enlightenment in Britain and Ireland | Blanchard, Shaun | Article in Book | Oxford University Press | 2023 |
| Thomas "Bullocks" Wyse : a Catholic industrialist during the Penal Laws, part 2 | Cowman, Des | Article in Journal | | 1984 |
| Thomas (Bullocks) Wyse : a Catholic industrialist during the Penal Laws. Part 1 | Cowman, Des | Article in Journal | | 1983 |
| Thomas A. Finlay S.J., 1848-1940 : educationalist, editor, social reformer | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2004 |
| Thomas Brehun (1582-1647) and Maurice Brehun (1588-1633) | Hazard, Benjamin | Article in Journal | | 2019 |
| Thomas Carr in Ireland | Boland, T. P. | Article in Journal | | 1991 |
| Thomas Dease, bishop of Meath and some questions concerned with the rights to ecclesiastical property alienated at the reformation | Rice, Gerard | Article in Journal | | 1975 |
| Thomas F. Ryan S.J. From Cork to China and Windsor Castle, 1889-1971 | Morrissey, Thomas J. | Monograph or Collective Volume | Columba Press | 2010 |
| Thomas Hussey, bishop of Waterford and Lismore, 1797-1803, and the rebellion of 1798 | Keogh, Dáire | Article in Book | | 1992 |
| Thomas James Crotty O.P. and his correspondence with Sir Roger Casement | Walsh, Edward | Article in Journal | | 2019 |
| Thomas L. Synnott : the career of a Dublin Catholic 1830-1870 | Cullen, Bob | Monograph or Collective Volume | Irish Academic Press | 1997 |
| Thomas Nast and the public school of the 1870s | Justice, Benjamin | Article in Journal | | 2005 |
| Thomas Nugent (1569-1635) and the Irish Capuchins in the counter-reformation, 1591-1641 | Martin, F.X. | Thesis | | 1951 |
| Thomas W. Allies (1813-1903) | Enciclopedia Cattolica | Article in Book | NA | 1948 |
| Thomastown Catholic church (notes on the background and construction) | Walsh, Walter | Article in Journal | | 1996 |
| Thomastown national schools in the nineteenth century : the role of the Roman Catholic clerical manager | Doyle, Joe | Article in Journal | | 2003 |
| Thr Reformation in Ireland and England: changing stories | Jefferies, Henry A. | Article in Journal | | 2017 |
| Three early 19th century diocesan reports | O'Shea, Kieran | Article in Journal | | 1977 |
| Three early nineteenth century diocesan reports | O'Shea, Kieran | Article in Journal | | 1977 |
| Three unpublished Cistercian documents | [Ó Conbhuí], Colmcille | Article in Journal | | 1955 |
| Thrown among strangers : John Henry Newman in Ireland | McRedmond, Louis | Monograph or Collective Volume | Veritas | 1990 |
| Ths Shankill butchers | Dillon, Martin | Monograph or Collective Volume | Hutchinson | 1989 |
| Ties that bind : ethnic and religious factors in the marriage choices of Irish-American Catholics on the Dakota frontier | Funchion, Michael F. | Article in Journal | | 2010 |
| Timely and substantial relief : New York's Cardinal John Farley and the Easter Rising | Feighery, Kate | Article in Book | | 2016 |
| Times to cherish : Cashel and Rosegreen parish history 1795-1995 | Moloney, Bernie | Monograph or Collective Volume | Parish of Cashel and Rosegreen | 1994 |
| Titus Oates and his 'Popish plot' | Lechmere, Joscelyne | Article in Journal | | 1945 |
| To 'elude the design and intention' of the Penal Laws : collusion and discovery in eighteenth-century Ireland - a case study | Lyons, Emma | Article in Book | NA | 2021 |
| To Hell or to Purgatory? Irish folk religion and post-Tridentine counter-reformation Catholic teachings | O'Connor, Anne | Article in Journal | | 2012 |
| To mass in the gallery | O'Gorman, Dermot | Article in Journal | | 1994 |
| To Russia with love : Father Sean Moriarty and a modern Peregrinatio Pro Christo | Ryan, Salvador | Article in Book | | 2015 |
| To Tara via Holyhead : Irish Catholic immigrants in nineteenth-century Christchurch | Fraser, Lyndon | Monograph or Collective Volume | Auckland University Press | 1997 |
| To Tara via Holyhead : the emergence of Irish Catholic ethnicity in nineteenth-century Christchurch, New Zealand | Fraser, Lyndon | Article in Journal | | 2002 |
| To Tara via Holyhead : the Irish Catholic in nineteenth century Christchurch | Fraser, Lyndon | Article in Book | | 1995 |
| To the greater glory : a history of the Irish Jesuits | McRedmond, Louis | Monograph or Collective Volume | | 1991 |
| To the holy island : the sacral landscapes of archbishop John Healy | Maume, Patrick | Article in Book | | 2013 |
| Togher celebrates and remembered | Bradley, John | Article in Journal | | 2017 |
| Tolerancia y sistema educativo en Irlanda del Norte | Celador Angón, Óscar | Monograph or Collective Volume | Universidad Carlos III de Madrid | 2003 |
| Toleration and state institutions : British policy towards Catholics in eighteenth-century Ireland and Quebec | Stanbridge, Karen | Monograph or Collective Volume | Lexington Books | 2003 |
| Toleration in later eighteenth-century Ireland : Voltaire and the 'Dublin' and 'Hibernian' magazines, 1762-84 | Gargett, Graham | Article in Book | | 2003 |
| Tomás Ó Fiaich | Ó Glaisne, Risteárd, 1927-2003 | Article in Journal | | 1992 |
| Tomás Ó Fiaich | Ó Glaisne, Risteárd, 1927-2003 | Monograph or Collective Volume | Coiscéim | 1990 |
| Tomás Ó Fiaich - saol agus saothar i Maigh Nuad | Ó Doibhlin, Diarmaid | Article in Book | | 1995 |
| Tomás Ó Fiaich as scholar, teacher, mentor and friend | Ó Muraile, Nollaig | Article in Journal | | 2017 |
| Tomás Ó Fiaich, scoláire | Ó Dufaigh, Seosamh | Article in Journal | | 1978 |
| Tombstone inscriptions of Kilconickny and Lickerrig, Co. Galway | Martyn, Adrian James,Martyn, Noreen | Article in Journal | | 2011 |
| Tombstone inscriptions of the Carmelite Abbey, Loughrea, County Galway | Martyn | Article in Journal | | 2009 |
| Tomhaggard : a sacred place | | Monograph or Collective Volume | Tomhaggard Heritage Group | 2002 |
| Tommaso Giordani, Gregorio Ballabene’s Messa a dodici cori con organo and sacred music in late-eighteenth-century Dublin | Sharpe, Richard | Article in Journal | | 2016 |
| Torna (Tadhg Ó Donnchadha) | Ó Glaisne, Risteárd, 1927-2003 | Article in Book | | 1993 |
| Totalitarian Ulster | Tucker, William John | Article in Journal | | 1944 |
| Touting for respectability : church and state | Ferriter, Diarmaid | Article in Book | | 2024 |
| Towards a 'world-wide empire of the Gael': nationalism, identity, and the Hibernian Australasian Catholic Benefit Society, 1912-1922 | Mannion, Patrick | Article in Journal | | 2022 |
| Towards a biography of an archbishop | Keogh, Dermot | Article in Journal | | 1998 |
| Towards a culture of tolerance | Falconer, Alan | Article in Book | | 2003 |
| Towards a history of devotion to Mary in Ireland, 1100-1600 | O'Dwyer, Peter | Monograph or Collective Volume | Carmelite Publications | 1979 |
| Towards a history of the Cecilian movement in Ireland; an assessment of the writings of Heinrich Bewerange (1862-1923), with a catalogue of his publications and manuscripts | Lawrence, NicholasWhite, Harry | Article in Book | | 1993 |
| Towards a new 'Monasticon Hibernicum' | Gwynn, Aubrey | Article in Journal | | 1959 |
| Towards a reconsideration of the place of traditional music in the Catholic Church | Scahill, Adrian | Article in Book | | 2018 |
| Towards a university : an account of some institutions for higher education in Ireland and elsewhere, and of the attitude of Irish Catholics to them, with particular reference to Queen's College and Queen's University, Belfast | Kennedy, David | Monograph or Collective Volume | Queen's University, Belfast, Catholic Dean of Residences | 1946 |
| Towards the invention of the Irish Catholic natio : Thomas Messingham's Florilegium (1624) | O'Connor, Thomas | Article in Journal | | 1999 |
| Townsend Street chapel | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1943 |
| Tracing the cultural legacy of Irish Catholicism : from Galway to Cloyne and beyond | Maher, EamonO'Brien, Eugene | Monograph or Collective Volume | Manchester University Press | 2017 |
| Tracing the history of a troubled society : Northern Ireland since partition 1921-79 | Phoenix, Eamon | Article in Book | | 1995 |
| Tracing the imprint: Catholicism in some twentieth century Irish fiction | Maher, Eamon | Article in Journal | | 2011 |
| Transcending Language and Ethnicity : Oblates of Mary Immaculate and the Canonical Erection of the Diocese of Calgary, 1912-1916 | Foran, Timothy P. | Article in Journal | | 2008 |
| Transcript from Fr. Haly's private papers on the Jesuit mission in Lurgan 1873 | Haly, Fr. | Article in Journal | | 1990 |
| Transcription and translation of London version of Richard O'Ferrall's report to Propaganda Fide (1658) | Campbell, Ian W. S.Tjoelker, Nienke | Article in Journal | | 2008 |
| Translating the Vatican : Paul Cullen, power and language in nineteenth-century Ireland | O'Connor, Anne | Article in Journal | | 2014 |
| Translating the Vatican : Paul Cullen, power and language in nineteenth-century Ireland | O'Connor, Anne | Article in Journal | | 2014 |
| Treas órd rialta Shain Froinsias i nDíóse Thuama | Mac Uaid, Bearnard | Article in Journal | | 1959 |
| Treasures of Irish Christianity, volume III : to the ends of the earth | | Monograph or Collective Volume | Veritas | 2015 |
| Triangulating opposition : Irish expatriates and hagiography in the seventeenth century | McKenna, Catherine | Article in Book | | 2003 |
| Trias Thaumaturga | Colgan, John | Monograph or Collective Volume | De Búrca | 1997 |
| Trinity College and its only Catholic provost | Brady, Seamus | Article in Journal | | 1940 |
| Trinity College and the religious problem in Irish education | Burke, Andrew E. | Article in Book | | 1990 |
| Triumphant failure: the return of the Irish Papal Brigade to Cork, November 1860 | O'Connor, Anne | Article in Journal | | 2009 |
| Troppo Ardenti Sacerdoti : the Conroy mission revisited | Perin, Roberto | Article in Journal | | 1980 |
| Trouble at Pubble : inscriptions from a Fermanagh graveyard and an episode from its history | Mac Annaidh, Séamus | Article in Journal | | 2003 |
| Trouble in the north end : the geography of social violence in Saint John, 1840-1860 | Winder, Gordon M. | Article in Journal | | 2000 |
| Troubled curate days. ...reminiscences of the Sinn Fein days | Brennan, Malachy, Canon | Article in Journal | | 1996 |
| Troy to Bray : letters from Dublin to Thurles, 1792-1817 | | Article in Journal | | 2001 |
| Troy to Carroll : letters from Dublin to Baltimore, 1794-1815 | | Article in Journal | | 1998 |
| Truth and calumny in Baroque Rome: Richard O'Ferrall and the "Commentarius Rinnuccinianus", 1648-1667 | Campbell, Ian W. S. | Article in Journal | | 2012 |
| Tuam two centuries ago | Claffey, Tony | Article in Journal | | 2015 |
| Tuath na Dromann : a history of Cill na Martra | Murphy, Donal, 1957- | Monograph or Collective Volume | Original Writing | 2008 |
| Tuggen und Bodman : Bemerkungen zu zwei römischen itinerarstationen | Lieb, Hans | Article in Journal | | 1952 |
| Tullamore Catholic church : a historical survey | Byrne, Michael | Monograph or Collective Volume | Tullamore Parish Committee | 1987 |
| Tullow's story : a portrait of a county Dublin parish | Simms, George Otto | Monograph or Collective Volume | Select Vestry of Tullow Parish | 1983 |
| Turbulent diocese : the Killala troubles, 1798-1848 | Hoban, Brendan | Monograph or Collective Volume | Banley House | 2011 |
| Turning the century : Catholics decadent and Prestonian | Smith, Tom, 1931- | Article in Book | | 2003 |
| Twentieth-century American Catholicism and Irish Americans | Shelly, Thomas J. | Article in Book | | 2006 |
| Twentieth-Century Scottish Catholicism: Poverty, Affluence, Freedom | Gilfillan, Paul | Article in Book | Oxford University Press | 2023 |
| Two bishops and a football : Ireland and the Balkans in the 1940s and '50s | Slattery, Linda | Article in Journal | | 2007 |
| Two Catholic 'gentleman' of the 1860s and whatever happened to Carbery Show | O'Regan, Liam | Article in Journal | | 1996 |
| Two centuries of Catholic instruction in the diocese of Ferns | Tynan, Michael | Article in Journal | | 1988 |
| Two centuries of Catholicism in County Wexford | Corish, Patrick J. | Article in Book | | 1987 |
| Two Clongowes centenaries | Savage, Roland | Article in Journal | | 1941 |
| Two contemporary historians of the confederation of Kilkenny : John Lynch and Richard O'Ferrall | Corish, Patrick J. | Article in Journal | | 1953 |
| Two diocesan reports : Elphin (1753) and Killaloe (1792) | | Article in Journal | | 1972 |
| Two Dominican martyrs of Ireland | Fenning, HughValkenburg, Augustine | Monograph or Collective Volume | Dominican | 1992 |
| Two early eighteenth century bishops of Killaloe | Murphy, Ignatius | Article in Journal | | 1986 |
| Two Irish Jesuits : Andrew Sall (1612-86) and Andrew Sall (1624-82) | Breeze, Andrew | Article in Journal | | 1996 |
| Two Lands on One Soil : Ulster Politics before Home Rule | Wright, Frank | Monograph or Collective Volume | Gill & Macmillan | 1996 |
| Two letters in Irish from Domhnall Mac Suibhne OSA in Nantes (1640) [with index] | O'Scea, CiaranÓ Ciosáin, ÉamonÓ Macháin, Pádraig | Article in Journal | | 2015 |
| Two letters of Cardinal Cullen, 1871 and 1873 | Walsh, Katherine | Article in Journal | | 1973 |
| Two men of Roscrea : Martin Walsh and Michael Meagher | Walsh, Laurence | Article in Journal | | 1983 |
| Two nineteenth-century Catholic poets : Gerard Manley Hopkins and Aubrey de Vere | Samway, Patrick | Article in Journal | | 2017 |
| Two priests of Naas | Costello, Con | Article in Journal | | 1987 |
| Two priests, the family and the Irish Constitution | Kennedy, Finola | Article in Journal | | 1998 |
| Two reports on the Catholic Church in Ireland in the early seventeenth century | | Article in Journal | | 1959 |
| Two seventeenth-century proclamations against the Catholic clergy | Corish, Patrick J. | Article in Journal | | 1984 |
| Two sieges and a murder: the 1641 rebellion in Ardmore | Harrington, Richard | Article in Journal | | 2022 |
| Two sixteenth century Munster primates : Donnchadh Ó Taidhg (1560-62) & Richard Creagh (1564-85) | O'Brien, W. P. | Article in Journal | | 1989 |
| Two studies in integrity : Gerald Griffin and the Rev. Francis Mahony (Father Prout) | Mannin, Ethel | Monograph or Collective Volume | Jarrolds | 1954 |
| Two Wexford priests and '98 | MacGrath, Kevin | Article in Journal | | 1948 |
| Two Wexford priests and '98 | MacGrath, Kevin | Article in Journal | | 1948 |
| Uaitéar Ó Loingsigh, Easbog Chluain Fearta (1647-63) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1942 |
| Ulster 1600-2000 : posing the question? | Bartlett, Thomas | Article in Journal | | 1998 |
| Ulster : l'Irlande des fous de Dieu | De Groulart, Claude | Monograph or Collective Volume | Rossel | 1976 |
| Ulster : the internal colony | Anonymous | Monograph or Collective Volume | Queen's University of Belfast, Ulster Unionist Association | 1993 |
| Ulster exiles in Europe, 1605-1641 | Henry, Gráinne | Article in Book | | 1993 |
| Ulster opposition to Catholic emancipation, 1828-9 | Kingon, Suzanne T. | Article in Journal | | 2004 |
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| Ultramontanism in Quebec and the Irish connection | Bowen, Desmond | Article in Book | | 1988 |
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| Una communita gotto controllo : operazioni contro-inzurrezionali delle forze de sicurezza britanniche nel quartiere catholico di Ballymurphy | Pistoi, Paolo | Monograph or Collective Volume | Pistoi|Angeli | 1981 |
| Una lettera di Luke Wadding ad Ilarione Rancati sull'Immacolata Concezione | | Article in Journal | | 2018 |
| Unaware | Ward, Owen | Article in Journal | | 2016 |
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| Undermining the Molly Maguires | Bloom, Joseph H. | Article in Journal | | 1999 |
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| Unholy orders : tragedy at Mount Cashel | Harris, Michael | Monograph or Collective Volume | Viking | 1990 |
| United and disunited Irishmen : the discourse of sectarianism in the 1790's | Whelan, Kevin | Article in Book | | 1995 |
| United States documents in the Propagands Fide archives. Vol. 2 | Kenneally, Finbarr | Monograph or Collective Volume | Academy of American Franciscan History | 1968 |
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| Unremembering the devotional revolution | Murphy, James H. | Article in Book | | 2005 |
| Unusual suspects : twelve radical churchmen | Carroll, Denis | Monograph or Collective Volume | Columba | 1998 |
| Unveiling of martyrs' monument at Kilmallock | Seoighe, Mainchín | Article in Journal | | 2000 |
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| Up the west! silver jubilee, Church of the Annunciation 1967-1992 : aspects of the history and development of our parish, Finglas West | O'Leary, Frank | Monograph or Collective Volume | Finglas West Silver Jubilee Committee | 1992 |
| Upholding the commandments and the will of the majority: the Catholic hierarchy, the October 1922 pastoral, and the Irish civil war | Waldron, KieranÓ Corráin, Daithí | Article in Journal | | 2023 |
| Urban Catholics : urban Catholicism in England and Wales from 1829 to the present day | Hickey, John | Monograph or Collective Volume | | 1967 |
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| Ursuline Convent, Blackrock, Cork : its archives and a note on its history | Clarke, Ursula | Article in Journal | | 2000 |
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| Vatican archives; Lettere di Particolari : material relating to Ireland | Giblin, Cathaldus | Article in Journal | | 1973 |
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| Venerable Archdeacon Cavanagh, pastor of Knock, 1867-97 | Ua Cadhain, Liam | Monograph or Collective Volume | Shrine Society | 1953 |
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| Viceregal vignettes : Lords lieutenant of Ireland under William Pitt, the Younger, 1784-1801 | Schweitzer, D. R. | Article in Journal | | 1986 |
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| Victimhood and attitudes towards dealing with the legacy of a violent past : Northern Ireland as a case study | Brewer, John D.Hayes, Bernadette E. | Article in Journal | | 2015 |
| Vignettes : biecentennial commemoration publication on Fr James Curley S.J. 1796-1889, astronomer, priest, professor at Georgetown College, Washington D.C. formerly of Athleauge , Co Roscommon, Ireland. Including previously unpublished letters, photos, essays, features incorporating Athleague/Fuerty miscellany and 19 century Irish famine remembrance | | Monograph or Collective Volume | Moran/Cartur Publications | 1996 |
| Vincent de Paul Society, Limerick, and the famine | Walsh, Laurence | Article in Journal | | 1995 |
| Vincent de Paul, the Lazarist Mission, and French Catholic Reform | Forrestal, Alison | Monograph or Collective Volume | Oxford University Press | 2017 |
| Vincentian Mission in Strokestown 12th May - 9th June 1867. First Mission in Strokestown | Anonymous | Article in Journal | | 1998 |
| Violence in Northern Ireland, 1969-1994 : sectarian or ethno-national | O'Duffy, Brendan | Article in Journal | | 1995 |
| Violence, politics and Catholicism in Ireland | Rafferty, Oliver P. | Monograph or Collective Volume | Four Courts | 2016 |
| Vision and reality : a survey of twentieth-century Irish inter-church relations | Ellis, Ian M. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1992 |
| Vision unrealized : the Presbyterian mission to Irish Roman Catholics in the nineteenth century | Rodgers, R. J. | Article in Journal | | 1991 |
| Visitatio Ecclesie S. Isidori Die 25 Augusti 1628. La fabbrica dei Frati Minori irlandesi a Roma | | Article in Journal | | 2013 |
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| Vocation and vision | McAvera, Brian | Article in Journal | | 2009 |
| Vocationalism and social Catholicism in twentieth-century Ireland : the search for a Christian social order | O'Leary, Don | Monograph or Collective Volume | Irish Academic Press | 2000 |
| Vocationalism in emergency Ireland | O'Leary, Don | Article in Book | | 2004 |
| Vocations : a review of national and international trends | Weafer, John | Article in Journal | | 1988 |
| Voices from the grave : II, family relations of Father James O'Coigley | Downie, Patrick F. | Article in Journal | | 1954 |
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| Waterbury Irish : from the Emerald Isle to the Brass City | Maher, Janet | Monograph or Collective Volume | History Press | 2015 |
| Waterford and the first century of the Irish College of Salamanca : a gallery of illustrious students and the projected library of the rector Paul Sherlock, 1595-1646 | Burguillo López, Javier ; de León Perera, Cristo José | Article in Book | | 2026 |
| Weasels in a hole : ideologies of the Irish conflict | Smith, Jim | Article in Book | | 1991 |
| Welcoming the stranger : Irish migrant welfare in Britain since 1957 | Kennedy, Patricia | Monograph or Collective Volume | Irish Academic Press | 2015 |
| Wentworth and Dublin's Catholic clergy : a document from the Strafford Papers | O'Connor, Tim | Article in Journal | | 2005 |
| Westminister and the early civil rights struggle in Northern Ireland | Feeny, Vincent E. | Article in Journal | | 1976 |
| Wexford support for the Pope in 1870 | Murphy, Hilary | Article in Journal | | 1992 |
| What happened to Fr Seán Fagan? | Hanley, Angela | Monograph or Collective Volume | Columba Press | 2019 |
| What is meant by Catholic Emancipation | Ronan, Myles V. (Myles Vincent) | Article in Journal | | 1930 |
| What parish are you from? : a Chicago Irish community and race relations | McMahon, Eileen M. | Monograph or Collective Volume | University Press of Kentucky | 1995 |
| When God took sides : religion and identity in Ireland : unfinished history | Elliott, Marianne | Monograph or Collective Volume | Oxford University Press | 2009 |
| When integrated education came to North Armagh | Moffat, Chris | Article in Journal | | 2015 |
| When Raphoe first had two bishops | Meehan, Helen | Article in Journal | | 2002 |
| When reformations collide | McCafferty, John | Article in Book | | 2002 |
| When the world came to Dublin. An excerpt form 'The 1932 Eucharistic Congress' by Rory O'Dwyer | O'Dwyer, Rory | Article in Journal | | 2009 |
| When ‘perverts’ were religious :
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| Where does the state end and the church begin? the strange career of Richard S. Devane | Beatty, Aidan | Article in Journal | | 2019 |
| Where Erne and Drowes meet the sea : fragments from a Patrician parish | Ó Gallachair, Pádraig | Monograph or Collective Volume | Donegal Democrat | 1961 |
| Where I sensed the breath of God : a footnote in Anglo-Irish history | Evans, Roddy | Monograph or Collective Volume | David H. Hume | 2002 |
| Whig and Tory Rivalry on Galway Corporation, 1705-1717 | Hayton, D.W. | Article in Journal | | 2023 |
| Who is leading? Archbishop John Thomas Troy and the priests and people in the Archdiocese of Dublin, 1787-1823 | McNally, Vincent J. | Article in Journal | | 1995 |
| Who murdered Marcus Lyon? | Clark, Andrienne G. | Article in Journal | | 1977 |
| Who ruled Ireland? The Irish administration, 1879-1914 | Campbell, Fergus | Article in Journal | | 2007 |
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| Who wrote 'Lillibullero'? If not Tom Wharton, what about Robert Ware and Henry Wharton? | Ferguson, Kenneth | Article in Journal | | 2021 |
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| Why did Pope John Paul II visit Ireland? the 1979 papal visit in context | Ó Corráin, Daithí | Article in Journal | | 2020 |
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| Why Ulster distrusts Roman Catholicism | Anonymous | Article in Journal | | 1912 |
| Wicked Ernest : the truth about the man who was almost Britain's king : an extraordinary royal life revealed | Wardroper, John | Monograph or Collective Volume | Shelfmark | 2002 |
| Wicklow and the Eucharistic Congress 1932 | Finlay, John | Article in Journal | | 2012 |
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| Widows' inheritance in seventeenth-century Ireland | Lyons, Emma | Article in Journal | | 2005 |
| Wild geese : the Irish in European armies (sixteenth to eighteenth centuries) | McGurk, J. N. N. (John James Noel) | Article in Book | | 1992 |
| Wildgoose Lodge - an addendum | Ó Muirí, Réamonn | Article in Journal | | 2005 |
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| William Ronan, SJ, 1825-1907. War Chaplain, Missioner, Founder of Mungret College | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2003 |
| William Walsh, first archbishop of Halifax (1804-1858) | Kelly, Charlotte | Article in Journal | | 1945 |
| Wills in Killann Parish Archive 1870-1915 | McGoohan, Ultan | Article in Journal | | 2022 |
| Window on a Catholic parish : St. Mary's, Granard, Co. Longford, 1933-68 | Kelly, Francis | Monograph or Collective Volume | Irish Academic Press | 1996 |
| Wisdom and Mercy Meet : Catherine McAuley's interpretation of Scripture | Davis, Elizabeth M. | Article in Book | | 2007 |
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| Wolfe Tone Annual, 1943. Story of the penal days | Anonymous | Monograph or Collective Volume | Brian O'Higgins | 1943 |
| Women and Catholic life in Dublin, 1766-1852 | Enright, Séamus | Article in Book | | 2000 |
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| Women and philanthropy in nineteenth-century Ireland | Luddy, Maria | Monograph or Collective Volume | Cambridge University Press | 1995 |
| Women and religious practice | Corish, Patrick J. | Article in Book | | 1991 |
| Women and the church since the Famine | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1978 |
| Women and the Reformation in seventeenth-century Ireland | Kilroy, Phil | Article in Book | | 1991 |
| Women and the Reformation in Tudor Ireland | Jefferies, Henry A. | Article in Journal | | 2022 |
| Women readers and Catholic magazines | Ní Bhroiméil, Úna | Article in Book | | 2011 |
| Women religious in the history of Australia 1888-1950 : a case study - the Sisters of Mercy, Parramatta | McGrath, Sophie | Article in Journal | | 1995 |
| Women Religious, Charitable Ministries and the Welfare State | Mangion, Carmen M. | Article in Book | Oxford University Press | 2023 |
| Women's art in Ireland and Poland 1970-2010: Experiencing and experimenting on the female body | Morrison, Valérie | Article in Journal | | 2012 |
| Women's rights and Catholicism in Ireland | Mahon, E. | Article in Journal | | 1987 |
| Women, citizenship and Catholicism in the Irish Free State, 1922-1948 | Beaumont, Caitríona | Article in Journal | | 1997 |
| Women, domesticity and the family : recent feminist work in Irish cultural studies | Wills, Clair | Article in Journal | | 2001 |
| Women, solidarity and the 1913 Lockout : Dora Montefiore and the 'Save the Kiddies' scheme | Hunt, Karen | Article in Book | Dublin City Council | 2013 |
| Worker response to the 1920 Belfast shipyard expulsions : solidarity or sectarianism? | Norton, Christopher | Article in Journal | | 1996 |
| Worlds apart : segregated schools in Northern Ireland | Murray, Dominic | Monograph or Collective Volume | Appletree Press | 1985 |
| Woven figures : Seamus Heaney and nationalist tradition | Parker, Michael | Article in Book | | 2006 |
| Writing Robert Dunne : Brisbane's first Catholic archbishop | Byrne, Neil J. | Article in Book | | 1995 |
| You are the people, who are we? Reflecting on the Irish-Catholic contribution to Scottish society | Reilly, Patrick | Article in Book | | 1998 |
| Young Carew and Fr Tom Furlong of Harriestown | McDonald, Tom | Article in Journal | | 2005 |
| Young Ireland and the Catholic clergy in 1844 : contemporary deceit and historical falsehood | O'Connell, Maurice R. | Article in Journal | | 1988 |
| Zealots, censors and perverts : Irish censorship and Liam O'Flaherty's The Puritan | Kent, Brad | Article in Journal | | 2006 |
| [The Catholic emancipation movement and the people : one view of popular politics in Ireland during the 1820s] | Katsuta, Shunsuki | Article in Journal | | 1995 |
| « Papistes » ou « catholiques » ? « Papisme » ou « catholicité »?, Terminologie confessionnelle et culture politique en Irlande et aux États-Unis à la fin du 18e et au début du 19e siècle | Burke, Martin J. | Article in Journal | | 2002 |
| ‘A development of practical Catholic emancipation’ : laying the foundations for the Roman Catholic urban landscape, 1850–1900 | NicGhabhann, Niamh | Article in Journal | | 2019 |
| ‘A source of sad annoyance’: the Irish and crime in south Wales, 1841–81 | Summers, Veronica | Article in Journal | | 2009 |
| ‘Bullworks against the furie of heresie’: Identity, Education, and Mission in the English Jesuit College of St Omers | Graffius, Jan | Article in Book | | 2018 |
| ‘I have been trying very hard to be powerful “nice” …’ : the correspondence of Sister M. De Sales (Brennan) during the American Civil War | Quinn, E. Moore | Article in Journal | | 2010 |
| ‘I have been trying veryhard to be powerful “nice” …’ : the correspondence of Sister M. De Sales (Brennan) during the American Civil War | Moore Quinn, E. | Article in Journal | | 2010 |
| ‘Indecent and suggestive pictorial matter’ : banning Picture Post in Ireland | O'Brien, Mark | Article in Journal | | 2023 |
| ‘Now him white man‘
images of the Irish in colonial Australia | Hall, Dianne | Article in Journal | | 2014 |
| ‘Staging a lie' : Boston Catholics and the new Irish drama | Kane, Paula M. | Article in Book | | 1996 |
| ‘There but for the grace of God go I’ : middle-class Catholic responses to Ireland’s Great Famine | Delaney, Enda | Article in Journal | | 2020 |
| ‘They are murderers’ : the English Catholic Church and Provisional IRA attacks on London | Scull, Margaret M. | Article in Journal | | 2020 |
| “An Italian of the Vatican type” : the Roman formation of Cardinal Paul Cullen, Archbishop of Dublin | Barr, Colin | Article in Journal | | 2016 |
| “In sober dignity” : the Irish Brigade, ethnicity, and the Irish Catholic temperance movement in the Civil War era | Smithmyer, Abbi | Article in Journal | | 2021 |
| “Language which will move their hearts” : speaking power, performance, and the lay-clerical relationship in modern Catholic Ireland | Delay, Cara | Article in Journal | | 2014 |
| “Orangeism, a great Protestant crusade” : the nativist legacy of the Orange Order in the northeastern borderlands | Cline, Tyler | Article in Journal | | 2018 |
| “Take and eat” : links between the Eucharist and human flesh in some twentieth-century Irish texts | Maher, Eamon | Article in Journal | | 2018 |
| “Well, we didn’t pass a bit o’ remarks on it. It was second nature to us” : the rituals of fasting in Ireland before Vatican II | Deleuze, Marjorie | Article in Journal | | 2018 |
| “With Every Wish to Reconcile”: 'The Memoirs of the Life and Writings of Charles O’Conor of Belanagare' (1796) and Religious Enlightenment in Ireland | Tsapina, Olga A. | Article in Journal | | 2012 |
| “’Tis yourself is a skeleton” : deathbed scenes and ethnic identity in Irish-American short fiction, 1895–1910 | Cusack, ChristopherJanssen, Lindsay | Article in Journal | | 2022 |