| Gilbert, J. T., see Gilbert, J. T. (John Thomas), Sir, 1829-1898
Gilbert, John T., Sir, see Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Cross-reference | | |
| O'Neill, Thomas Patrick, see also Ó Néill, TomásÓ Néill, Tomás, see also O'Neill, Thomas Patrick | Cross-reference | | |
| Mac Coscair, Liam T. see Cosgrave, William Thomas, 1880-1965 | Cross-reference | | |
| "A county I could love": Thomas MacDonagh in Carlow 1915 | Kinsella, Shay | Article in Journal | | 2018 |
| "A great statistical operation" : a century of Irish censuses, 1812-1911 | Jordan, Thomas E. | Article in Journal | | 1997 |
| "A nation once again." Thomas Osborne Davis and the construction of the Irish "popular" tradition | Giorello, Giulio | Article in Journal | | 1995 |
| "A nation perishing of political economy"? | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | Irish Academic Press | 1996 |
| "A people made rather for copies than originals" : the Anglo-Irish, 1760-1800 | Bartlett, Thomas | Article in Journal | | 1990 |
| "A science unknown in Ireland": political economy in 19th-century Ireland | Gray, Peter | Article in Book | Routledge | 2009 |
| "A submission, sir!" Who has the Right to Person in eighteenth-century Britain? | De Bolla, Peter | Article in Book | Palgrave Macmillan | 2005 |
| "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, well-educated , and well-informed body of clergy" : Trinity College Dublin and the Church in upper Canada in the 1830s | Power, Thomas P. | Article in Book | Pickwick Publications | 2018 |
| "All her lovely companions are faded and gone": How "The Last Rose of Summer" Became Europe's favourite Irish melody" | Klein, Axel | Article in Book | | 2018 |
| "An awful visitation of Providence" : the Irish Famine of 1845-49 | Jordan, Thomas Edward | Article in Journal | | 1997 |
| "An awful visitation of Providence" : The Irish Famine of 1845-49 | Jordan, Thomas Edward | Article in Journal | | 1997 |
| "An endless line of useless hills" : in memoriam Thomas Slattery | Mahon, Oliver | Article in Journal | | 2002 |
| "An Union for empire" : the Anglo-Irish Union as an imperial project | Bartlett, Thomas | Article in Book | Colin Smythe | 2002 |
| "An union of power"? : the United Irish organisation, 1795-1798 | Graham, Thomas | Article in Book | Lilliput Press | 1993 |
| "Burke's political testament" : Thomas Hussey and the Irish Directory | Keogh, Dáire | Article in Book | Poolbeg | 1998 |
| "But what about democracy"? | Fisk, Robert | Article in Journal | | 1989 |
| "Clowns of no account"? Reflections on the involvement of four Irishmen in the commercial life of the Colony of New South Wales, 1788-1818 | Craig, Russell,Ó hÓgartaigh, Ciarán,Ó hÓgartaigh, Margaret | Article in Journal | | 2004 |
| "Come Lord Jesus, quickly come!" : the writing and thought of Edward Nangle, 1828-1880s | Kelley, Thomas J. | Article in Book | | 2006 |
| "Double crossing" Irish borders : the Field Day production of Tom Kilroy's Double Cross | Trotter, Mary | Article in Journal | | 1997 |
| "Eternity's commissioner" : Thomas Carlyle, the Great Irish Famine and the geopolitics of travel | Nally, David P. | Article in Journal | | 2006 |
| "For the love of God" | Cassells, D. B. | Article in Journal | | 1988 |
| "Free women in a free nation" | Valiulis, Maryann Gialanella, 1947- | Article in Book | Blackwater Press in association with Radio Telefís Éireann | 1994 |
| "From motives of generousity as well as self-preservation" : Thomas Branagan, colonization, and the gradual emancipation movement | Tomek, Beverly | Article in Journal | | 2005 |
| "Gallici nautae de Galliarum provinciis" - a sixth/ seventh-century trade with Gaul, reconsidered | Thomas, Charles | Article in Journal | | 1990 |
| "Give them life by singing them about": Moore's musical performances in the English drawing-room" | Burns, Joanne | Article in Book | | 2018 |
| "God help the Irish!" : the history of the Irish Brigade | Tucker, Phillip Thomas, 1953- | Monograph or Collective Volume | McWhiney Foundation Press : Distributed by Texas A&M University Press Consortium | 2007 |
| "Grief mingled with deep execrations": Thomas Moore and the Death of Richard Brinsley Sheridan | Jones, Robert W. | Article in Book | | 2018 |
| "He never bragged about his medals", life sketch of Thomas Aloysius Carragher, sr. born 1901, d.1984 | Carragher, Mary Elizabeth (née Hensler) | Article in Journal | | 1992 |
| "Heretical plants of irish growth": Catholic critics of Mathewite temperance | Townend, Paul | Article in Journal | | 2005 |
| "Into the heartland of the ordinary": Seamus Heaney, Thomas Hardy and the divided traditions of modern and contemporary poetry | Schuchard, Ronald | Article in Journal | | 2014 |
| "Ireland is an unusual place" : President Kennedy's 1963 visit and the complexity of recognition | Cronin, Mike | Article in Book | Irish Academic Press | 2011 |
| "It is no ordinary child I foster in my little cell" : fostering the Christ Child in medieval Ireland | O'Donnell, Thomas C. | Article in Journal | | 2017 |
| "It's a long way to Tipperary": a military barracks, a song and a World War. Part One | Marnane, Denis G. | Article in Journal | | 2014 |
| "It's a long way to Tipperary": a military barracks, a song and a World War. Part Two | Marnane, Denis G. | Article in Journal | | 2014 |
| "Jacksons trip to Newry" came with Thomas on the Rollling Atlantic wave - his notebook of reels and dances for the fiddle, 1845 | Carraher, Tom | Article in Journal | | 1992 |
| "Keep us alert/ for the while remaining": Kinsella at eighty | Tubridy, Derval
| Article in Journal | | 2008 |
| "Lymerick Plantation" - Berkeley County, South Carolina | O'Brien, Michael J. | Article in Journal | | 1926 |
| "Masters of the mountains" : the insurgent careers of Joseph Holt and Michael Dwyer, County Wicklow, 1798-1803 | Bartlett, Thomas | Article in Book | Geography Publications | 1994 |
| "May the Lord in his mercy be kind to Belfast" : Thomas Ekenhead's city c.1790-1832 | Reid, Richard | Article in Journal | | 1994 |
| "Murdering heart ... murdering hand" : Captain Thomas Lee of Ireland, Elizabethan assassin | Myers, James P., jr. | Article in Journal | | 1991 |
| "My Jimmy dear..." A prison verse by Tom Clarke | Hegarty, Roddy | Article in Journal | | 2011 |
| "Of no small importance" : curricular change in the school of divinity, Trinity College Dublin, 1790-1850 | Power, Thomas P. | Article in Book | Pickwick Publications | 2013 |
| "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 partial attachments" : Tom Moore and 1798 | Jones, Catherine A. | Article in Journal | | 1998 |
| "Perfidious machiavellian friar" : Florence Conry's campaign for a Catholic restoration in Ireland, 1592-1616 | O'Connor, Thomas | Article in Journal | | 2002 |
| "Remember Your Country and Keep Up Its Credit" : Irish Volunteers and the Union Army, 1861-1865 | Bruce, Susannah Ural | Article in Journal | | 2005 |
| "Silva Focluti" | McDonnell, Thomas | Article in Journal | | 1982 |
| "Sr. Hutchinson, otra vez, no dice V. nonsenses, no tonterrias" : a bigoted response to Thomas J. Hutchinson's "Two years in Peru" (1873) | Murray, Edmundo | Article in Journal | | 2006 |
| "Tempering the rawness" : W. E. Hearn, Irish political economist and intellectual life in Australia | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | University College Galway | 1989 |
| "The Afrikaner from Cork" : Sir Thomas Upington (1845-1898) from Ballyclough, Mallow | Forde, Robert | Article in Journal | | 1999 |
| "The beleaguered fortress", St Patrick's College, Thurles, 1837-1988 | O'Dwyer, Christopher | Article in Book | Geography Publications | 1989 |
| "The continuation of Bede", s.a. 750 : high-kings, kings of Tara and "Bretwaldas" | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | Four Courts Press | 2000 |
| "The exterminator general of Clare," Marcus Keane of Beech Park (1815-1883) | Ó Murchadha, Ciarán | Article in Book | Clare Archaeological and Historical Society / Cumann Seandálaíochta Agus Staire an Chláir | 2000 |
| "The gravest situation of our lives" : Conservatives, Ulster, and the Home Rule crisis, 1911-14 | Kennedy, Thomas C. | Article in Journal | | 2001 |
| "The invasion that never was" : naval and military aspects of the French expedition to Bantry Bay, 1796 | Bartlett, Thomas | Article in Book | Mercier Press | 1997 |
| "The pattern of the flock" : John Thomas Troy, 1786-1823 | Keogh, Dáire | Article in Book | Four Courts Press | 2000 |
| "The sigh of thy harp shall be sent o'er the deep" : the influence of Thomas Moore in Australia | Molloy, Frank | Article in Book | Pinter | 1994 |
| "The world's rarest doctor" : Surgeon Major T.H. Parke | Smith, Des | Article in Journal | | 1992 |
| "This famous island set in a Virginian sea" : Ireland in the British empire, 1690-1801 | Bartlett, Thomas | Article in Book | Oxford University Press | 1998 |
| "Those half creatures of Plato": The musical inspiration behind Moore's National Airs and Sacred Songs | O'Donnell, Mary-Louise | Article in Book | | 2018 |
| "To mak a Tombe for the Earell of Ormon and to set it up in Iarland" : Renaissance ideals in Irish funeral monuments | Cockerham, Paul | Article in Book | Four Courts Press | 2007 |
| "Whistle up the marching tune" : the life and times of Thomas W. Sweeny | Morgan, Jack | Monograph or Collective Volume | Nova University | 1994 |
| "Ðu eart se weallstan" : Architectural Metaphor and Christological Imagery in the Old English Christ I and the Book of Kells | Kramer, Johanna | Article in Book | University of Toronto Press | 2007 |
| ''The almighty has been pleased to grant us a signal victory ...'' | Murphy, Liam | Article in Journal | | 2014 |
| 'A bright but unostentatious example...of virtue': Arthur Jacob Macan, a sovereign of Armagh | Haines, Keith | Article in Journal | | 2014 |
| 'A British empire court' : a brief appraisal of the history of the judicial committee of the Privy Council | Mohr, Thomas | Article in Book | Irish Academic Press | 2011 |
| 'A candidate who seemed tailor-made for the job' | Mitchell, Thomas | Article in Book | New Island | 2015 |
| 'A clean beast' : Crofton Croker's fairy tale of General Holt | O'Donnell, RuánReece, Bob | Article in Journal | | 1992 |
| 'A dish with one spoon' : American experience and the transformation of three officers of the crown | Linebaugh, Peter | Article in Book | Four Courts Press | 2003 |
| 'A divided loyalty' : the MacMurroughs, the Irish of Leinster and the crown of England, 1340-1420 | O'Byrne, Emmett | Article in Book | Geography Publications | 2008 |
| 'A Firbolg in the borrowed cloak of a Milesian' : Tom Moore, romantic biography and the politics of Union | Leask, Nigel | Article in Book | Cambridge Scholars | 2013 |
| 'A good painter may get good bread' : Thomas Pooley and Garret Morphey, two gentlemen painters | Fenlon, Jane | Article in Book | Four Courts Press | 2012 |
| 'A gruesome case' : James Joyce's Dublin murder case | Hardiman, Adrian | Article in Book | Four Courts in association with the National Library of Ireland Society | 2007 |
| 'A mere boy' | McCabe, Fergal | Article in Journal | | 2016 |
| 'A Presentment of Recusants, East Galway, 1632' | Smyth, Michael | Article in Journal | | 2009 |
| 'A recognised authority on Irish studies : Thomas Culhane's writings in the Melbourne Advocate | Noone, Val | Article in Journal | | 2004 |
| 'A shadowy but important figure' : Rudolf Thomas Siegfried | Ó Dochartaigh, Pól | Article in Book | Four Courts Press | 2011 |
| 'A spirit of emulation' : the transformation of sport in north Munster, 1850-1890 | Hayes, Thomas | Thesis | | 2009 |
| 'A weighty, serious business' : the conversion of Catholic clergy to Anglicanism | Power, Thomas P. | Article in Book | Four Courts Press | 2005 |
| 'After all the Troubles, politics wants to make peace with art': Two poems of the Decade of Centenaries | French, TomMcCarthy, Thomas | Article in Journal | | 2023 |
| 'All gorgiusly wrought' : Renaissance influence at Christ Church cathedral, Dublin | Kinsella, Stuart | Article in Book | Four Courts Press | 2011 |
| 'An Eel is not more slippery than an Irish Gentleman': managing a jointly held estate in Cork and Dublin, 1778-1845 | Johnstone, Laura | Article in Journal | | 2019 |
| '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 |
| 'Around the house and mind the cosmos' : music, dance and identity in contemporary Ireland | Ó Súilleabháin, Mícheál | Article in Book | | 1998 |
| 'As the plague of locusts came in Egypt' : rebel motivation in north Down | McCavery, Trevor | Article in Book | Four Courts | 2003 |
| 'Ashford copys and rivals Roberts': new evidence for Thomas Roberts and William Ashford at Powerscourt | Sheppard, David | Article in Journal | | 2020 |
| 'Aspice spectator sic me docuere parentes' : aesthetico-political misprision in Derricke's A Discoverie of Woodkarne | Cartelli, Thomas | Article in Book | | 2021 |
| 'Banished to the barn' - John Doherty and Bonnie Kate | Caldwell, Conor Thomas | Article in Journal | | 2011 |
| 'Beggar's gabardine': Thomas Carlyle, the Irish Famine and the book he did not write | Wolf, Daphne Dyer | Article in Journal | | 2015 |
| 'Blind Cruise' the Elizabethan harper | Edwards, David, 1963- | Article in Journal | | 2012 |
| 'Broken hand' - From Virginia to Laramie, a significant Cavan man in the American West | Dungan, Myles | Article in Journal | | 2005 |
| 'China is more important to you than Armagh' : Frank Aiken and Tibet | O'Malley, Kate | Article in Book | Irish Academic Press | 2014 |
| 'End of a pale' or 'a new pale in the making'? : the 'Barbarous nook' of the North, from Shakespeare to Milton | Maley, Willy | Article in Book | Four Courts Press | 2011 |
| 'Eternity is not long enough nor hell hot enough...' The Catholic Church and Fenianism | Rafferty, Oliver P. | Article in Journal | | 2008 |
| 'Fighting Dick' Talbot, 'the Chevalier'Wogan and Lally-Tolendal: jailbreakers and jailbirds | Ó Ciardha, Éamonn | Article in Journal | | 2011 |
| 'Forward in her progress': Thomas Davis's ideas on educating leaders | Conneaslly, John | Article in Journal | | 2017 |
| 'Foully butchered in a manner so treacherous'. The execution of a National Army Officer a century ago followed two shocking killings in rural Kerry in the months after the end of the Civil War | O'Shea, Owen | Article in Journal | | 2024 |
| 'Framed and clothed with variety' : print culture, multimodality, and visual design in Derricke's Image of Irelande | Silva, Andie | Article in Book | | 2021 |
| 'From Thomas Cartwright to John Howe; some Puritans who came among us' | Carson, John T. | Article in Journal | | 1990 |
| 'Giving a fart in its corduroys' - Irish attitudes to modern art | Kennedy, Róisín | Article in Journal | | 2021 |
| 'God bless your free Church of Ireland' : Wentworth, Laud, Bramhall and the Irish Convocation of 1634 | McCafferty, John | Article in Book | | 1996 |
| 'God save Ireland' | O'Neill, Thomas Patrick | Article in Journal | | 1943 |
| 'Have you tried the ash pit?' | Cahill, MaryD'Arcy, StephenHalpin, AndySmith, Carol | Article in Journal | | 2014 |
| 'Heroism and zeal' : pioneers of the Irish Christian missions to China | Comerford, PatrickO'Leary, Richard | Article in Book | | 2009 |
| 'Hibernia, 'Shamrock', 'Erin'... William Thomas Mulvany, and the 'Irish mines' in the Ruhr | Schmidt-Rutsch, Olaf | Article in Journal | | 2003 |
| 'Hys worthy seruice done in the vpror' : Sir John Whyte and the defence of Dublin during Silken Thomas' rebellion, 1534 | Jones, Randolph | Article in Book | | 2011 |
| 'I spent all this day at Dundanion': The journal of Eliza Deane, 1832 | Castle, Jessie | Article in Journal | | 2019 |
| 'In manners they be rude, and monst'rous eke in fashion' : images of otherness in early modern drama | Tuite, Patrick | Article in Book | | 2010 |
| 'Infatuated to his ruin' : the fate of Thomas Dermody, 1775-1802 | Griffin, Michael | Article in Journal | | 2006 |
| 'Initiative and courage' : Frank Aiken and the Congo crisis, 1960-1961 | Kennedy, Michael (Michael J.) | Article in Book | | 2014 |
| 'Inspiring a Mysterious Terror': 200 Years of Joseph Sheridan Le Fanu | | Monograph or Collective Volume | Peter Lang | 2016 |
| 'Journeys of the Mind: A Life in History', by Peter Brown, Princeton, 2023 | O'Loughlin, Thomas | Article in Journal | | 2024 |
| 'law of their own' : notes on legal alterity in early 19th-century Ireland | Sturgeon, Sinéad | Article in Journal | | 2010 |
| 'Let Erin remember' : a re-examination of the journal of Thomas Moore | Dowden, Wilfred S. | Article in Journal | | 1975 |
| 'Let the Damn Protestants do the Enlisting': The T.C. Beirne libel case in Brisbane, 1916-17 | Sullivan, RobinSullivan, Rodney | Article in Journal | | 2018 |
| 'Liberty or death' : the United Irishmen in New South Wales, 1800-4 | O'Donnell, Ruán | Article in Book | | 2003 |
| 'Like a little castle' : Waterford in the middle ages | Barry, Terence B. | Article in Book | | 1995 |
| 'Like Maginn, a Corcagian' : bad company for D. Maclise | McCarthy, Thomas | Article in Book | | 2012 |
| 'Like snow off the ditches' : the decline of Irish in south-west Cavan | Briody, Micheál | Article in Book | | 2009 |
| 'Make way for the Molly Maguire's!' The Ancient Order of Hibernians and the Irish Parliamentary Party, 1902-4 | McCluskey, Fergal | Article in Journal | | 2012 |
| 'Men to live and die for the defence of the same'. Leighlin, Carlow and their constables, c.1530-1580 | Wheeler, Dermot | Article in Journal | | 2018 |
| 'Metal Man Tower'. Westtown, Co. Waterford | Wright, Brendan | Article in Journal | | 2017 |
| 'Mick' Mannock - the forgotten ace | Mullen, Thomas J. | Article in Journal | | 1971 |
| 'Minister of the devil' : Thomas Ledlie Birch, presbyterian rebel in exile | Gilmore, Peter | Article in Book | | 2006 |
| 'Mongst the green mossy banks and wild flowers | Nelson, E. Charles | Article in Journal | | 2008 |
| 'Ná Tréig, a Thomáis, mheisi' A poem by Fearfeasa Ó'n Cháinte (c. 1570-1630) of Templemartin | Hamilton, Pádraig | Article in Journal | | 2024 |
| 'New wine in old bottles' : implementing Trent in early modern Ireland | Ryan, Salvador | Article in Book | | 2007 |
| 'No Mean Diplomat': The gift exchange practices of Shane O'Neill, a renaissance Gaelic lord | Sheils, Melissa | Article in Journal | | 2022 |
| 'Nothing but a bullet will stop me' : Éamon de Valera and the 1923 General Election | McCullagh, David | Article in Book | NA | 2023 |
| 'Obentia civium urbis felicitas' : Sir Henry Sidney's return to Dublin as depicted in Derricke's Image of Ireland | McGrath, Bríd | Article in Book | | 2021 |
| 'Old Pooley the Painter' : the life and career of a seventeenth - century painter in Dublin | Fenlon, Jane | Article in Journal | | 2004 |
| 'One of our brilliant ornaments' : the death and life of Thomas Foster | Laffan, WilliamRooney, Brendan | Article in Journal | | 2004 |
| 'One of the most fiendish and brutal attacks': The murders at Finnoe, Borrisokane, in 1843 | Dowling, Thomas | Article in Journal | | 2023 |
| 'Orange influences of the right kind' : Thomas D'Arcy McGee, Orangeism and the 'New Nationality' | Wilson, David A. | Article in Book | | 2007 |
| 'Ormuzd abroad ... Ahriman at home' : some early historians of the 'Wild Geese' in French service, 1840-1950 | Bartlett, Thomas | Article in Book | | 2009 |
| 'Paper bullets' : gendering the 1641 Rebellion in the writings of Lady Elizabeth Dowdall and Lettice Fitzgerald, baroness of Offaly | MacAreavey, Naomi | Article in Book | | 2007 |
| 'Patternes of rebellion' : Derricke's rebel poems | Chaghafi, Elisabeth | Article in Book | | 2021 |
| 'Paying the butcher's bill' : policing British colonial protest after 1918 | Thomas, Martin | Article in Journal | | 2011 |
| 'Pedigree' Davis : Thomas Davis's brother | Mac Grath, Kevin | Article in Journal | | 1952 |
| 'Personally I think it would be positively hilarious' : the European Convention, the Cyprus Question and Frank Aiken's state of exception | O'Shea, Helen | Article in Book | | 2014 |
| 'Pilfering, plundering, pillaging Republicans' : Itally at the close of the eighteenth century | Figgis, Nicola | Article in Book | | 1998 |
| 'Prophet of the oppressed nations': Gabriele D'Annunzio and the Irish Republic, 1919-21 | Phelan, Mark | Article in Journal | | 2013 |
| 'Put them out' : parties and elections, 1948-69 | Murphy, John A. | Article in Book | | 1979 |
| 'Rational creatures and free citizens' : republicanism, feminism and the writing of history | Cullen, Mary | Article in Journal | | 2000 |
| '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 |
| 'Res, tempus, locus, persona': Adomnán's exegetical method | O'Loughlin, Thomas | Article in Journal | | 1997 |
| 'Return them to power with sufficient strength to complete their work' : the Roman Catholic Church and the 1923 General Election’ | Ó Corráin, Daithí | Article in Book | | 2023 |
| 'Rhyme and rhythm and beauty' : the abandoned formalism of Kinsella's early poetry | Badin, Donatella Abbate | Article in Journal | | 2001 |
| 'Rishti' : Irish soldiers in India 1750-1950 | Bartlett, Thomas | Article in Book | | 2021 |
| 'Safety first' : Cumann na nGaedheal's election campaign in August 1923 | Farrell, Mel | Article in Book | | 2023 |
| 'Saint Patrick blesh vs': Captain Thomas Stukeley, textual quirks and the Nine Years War | De Ornellas, Kevin | Article in Book | | 2010 |
| 'Saving the south with all my might' : John Mitchel, champion of southern nationalism | Toomey, Michael | Article in Book | | 2006 |
| 'Sincere but mistaken men' - the letters of Joseph McGarrity | Farry, Michael | Article in Journal | | 2015 |
| 'Slane in Bregia', County Meath : its friary and hermitage | Westropp, Thomas Johnston | Article in Journal | | 1902 |
| 'Slow learners'? Comparing the Sunningdale Agreement and the Belfast/Good Friday Agreement | Hennessey, Thomas | Article in Book | | 2017 |
| 'So many wheels within wheels' : the 1793 Catholic Relief Act revisited | Bartlett, Thomas | Article in Book | | 2016 |
| 'Terrorism was never a remedy' : South Tipperary in 1916 | Marnane, Denis, G. | Article in Journal | | 2016 |
| 'The abominable Cath. Quest.': Catholic Emancipation, 1820-30 | Bartlett, Thomas | Article in Book | Oxford University Press | 2023 |
| 'The academy of warre' : military affairs in Ireland, 1600 to 1800 | Bartlett, Thomas | Monograph or Collective Volume | National University of Ireland | 2002 |
| 'The battle of Rushveala' : origin and outcome of a faction fight at Oughterard, Co. Galway on 8 December 1837 | Mitchell, James | Article in Journal | | 2003 |
| 'The cause of treason seems to have gone out of fashion in Ireland' : Dublin Castle and Robert Emmet | Bartlett, Thomas | Article in Book | | 2007 |
| 'The departure of O'Neill out of Ireland' by Thomas Ryan (RHA) | Fitzgerald, Patrick | Article in Journal | | 2007 |
| 'The Devil's Own' : Joseph Holt and the 1798 Rebellion in County Wicklow | O'Donnell, Ruán | Article in Book | | 1998 |
| 'The dog that didn't bark' : the North and 1803 | Quinn, James | Article in Journal | | 2003 |
| 'The Dolmen poets' : Liam Miller and poetry publishing in Ireland, 1951-1961 | Redshaw, Thomas Dillon | Article in Journal | | 2012 |
| 'The gospel of Mammon?' The Great Irish Famine and the critique of political economy | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | | 1996 |
| 'The head and comfort of Leinster' : Carlow as the administrative capital of Ireland, 1361-1394 | Connolly, Philomena | Article in Book | | 2008 |
| 'The iron man with the wooden head'? Frank Aiken and the Second World War | Evans, Bryce | Article in Book | | 2014 |
| 'The Islander': a more provocative Tomás O'Crohan | Shea, Thomas F. | Article in Journal | | 2014 |
| '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 Lumper' and its role in the Irish Famine | Downey, Thomas | Article in Journal | | 2015 |
| 'The most perfect specimen of civilised nature' : the Shannon Estuary Group - elite theory and practice | Potter, Matthew | Article in Book | | 2013 |
| 'The most universal villain I ever knew' : Jonathan Swift and the Earl of Wharton | Robbins, Christopher | Article in Journal | | 2003 |
| 'The name of the country I have forgotten' : remembering and disremembering in Sir Henry Sidney's 'Irish Memoir' (1583) | Maley, Willy | Article in Book | | 2007 |
| 'The Nation' in mourning | Kellett, Lorna | Article in Book | | 1945 |
| 'The Nation', history and the making of national citizens | Quinn, James | Article in Book | | 2019 |
| 'The only hope was to work with the Treaty' : local newspaper coverage of the 1923 General Election in Kerry | O'Shea, Owen | Article in Book | | 2023 |
| 'The origin of the Harp' : The influence of Thomas Moore's Irish Melodies on the work of Daniel Maclise | Boland, Mary Jane | Article in Book | | 2012 |
| 'The parliamentary traffic of this country' | Malcomson, A. P. W. | Article in Book | | 1979 |
| 'The unfortunate Costigan', first surveyor of the Dead Sea | O'Loughlin, Thomas | Article in Journal | | 2011 |
| 'They say I build up to the sky' : Thomas Wentworth, Jigginstown House and Dublin Castle | Fenlon, Jane | Article in Book | | 2011 |
| '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 |
| 'To put in order' : how the greffiers Fagel documented themselves as men of politics, men of religion and men of the world | Thomassen, Theo | Article in Book | | 2016 |
| 'Total War' and Ireland, 1793-1815 | Bartlett, Thomas | Article in Journal | | 2018 |
| 'Treason against traitors': Thomas Walker, Hugh O'Neill's would-be assassin | Morgan, Hiram | Article in Journal | | 2010 |
| 'Tutte le antiche usanze' : preserving Irish culture in Rome | Carroll, Clare | Article in Book | | 2007 |
| 'Unificator' : George Reavey and the Europa poets of the 1930s | Redshaw, Thomas Dillon | Article in Book | | 1995 |
| 'Value-free' history? The scholarly network of Sir James Ware | Empey, Mark | Article in Journal | | 2012 |
| 'We were all to have been massacred' : Irish Protestants and the experience of rebellion | Kelly, James, 1959- | Article in Book | | 2003 |
| 'What ish my nation?' : themes in Irish history 1550-1850 | Bartlett, Thomas | Article in Book | | 1988 |
| 'Who traffic here beware no strife ensue' | Davies, K. M. (Kathleen Mary) | Article in Journal | | 2009 |
| 'Why Ireland starved' after three decades: The Great Famine in cross-section reconsidered | Kelly, MorganÓ Gráda, Cormac | Article in Journal | | 2015 |
| 'Wisdom delightful for itself' | Mulreany, Michael | Article in Book | | 2009 |
| 'With courage and undaunted obstinacy' : Meagher in Montana, 1865-1867 | Axline, Jon | Article in Book | | 2006 |
| 'With the greatest affection for ye all': Lieutenant Thomas Mahon in the Bahamas, 1790-92 | Moran, Alan | Article in Journal | | 2022 |
| 'Without distinction of sex' : the roles of women in the 1923 General Election | McGing, Claire | Article in Book | | 2023 |
| 'Woe to the oppressor of the poor! : post-rebellion violence in Ballitore, county Kildare | O'Neill, Kevin | Article in Book | | 2003 |
| 'Workers to the rescue': Workers' International Relief in Ireland, 1925 | Grant, Adrian | Article in Journal | | 2011 |
| 100 years of primary curriculum development and implementation in Ireland : a tale of a swinging pendulum | Walsh, Thomas | Article in Journal | | 2016 |
| 125 years of the British & Irish Lions : the official history | Thomas, Clem,Thomas, Greg | Monograph or Collective Volume | Mainstream | 2013 |
| 130 Thomas Street, Dublin's oldest house and one family who lived there | Hussey, John | Article in Journal | | 2020 |
| 1599 : 'Sir John Oldcastle' : the Irish wars and the Elizabethan stage | O'Neill, Stephen | Article in Book | | 2007 |
| 16 lives : Thomas Clarke | Litton, Helen | Monograph or Collective Volume | O'Brien Press | 2014 |
| 16 lives : Thomas Kent | Ryan, Meda | Monograph or Collective Volume | O'Brien Press | 2016 |
| 16 lives : Thomas MacDonagh | Kenna, Shane | Monograph or Collective Volume | O'Brien Press | 2014 |
| 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 VI: Laois / Queen's County, TCD, MS 815. Offaly / King's County, TCD, MS 814 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2021 |
| 1641 Depositions: Volume VII: Wexford, TCD, MS 818 & TCD, MS 819 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2024 |
| 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 and the balladmakers | Munnelly, Tom | Article in Book | | 1998 |
| 1798 in Antrim and Down | Stewart, Anthony Terence Quincey, 1929-2010 | Article in Book | | 1998 |
| 1798, The United Irishmen and radical experience, (review essay) | Power, Thomas P. | Article in Journal | | 1997 |
| 1825-D'Arcy McGee-1925 : a collection of speeches and addresses : together with a complete report of the centennial celebration of the birth of the Honourable Thomas D'Arcy McGee, at Ottawa, April 13th, 1925 | McGee, Thomas D'Arcy, 1825-1868Murphy, Charles | Monograph or Collective Volume | Macmillan Company of Canada | 1937 |
| 1848 Tricolour celebration. | | Article in Journal | | 2011 |
| 1891-1916 | O'Brien, Conor Cruise, 1917-2008 | Article in Book | | 1960 |
| 1894-1994 : an overview | Lynch, Patrick, 1917-2001 | Article in Book | | 1994 |
| 1904 : richness and diversity without the Abbey | Fitz-Simon, Christopher | Article in Book | | 2004 |
| 1916 - revolution and religion | Whyte, John | Article in Book | | 1967 |
| 1916 - Revolution or evolution? | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1967 |
| 1916 agus mar sin de | Ó Snodaigh, Pádraig | Monograph or Collective Volume | Coiscéim | 2013 |
| 1916 in Kilmainham | Bourke, Wesley | Article in Journal | | 2010 |
| 1916....the second in a series of four articles in which Sean Murphy details the family histories of leaders of the 1916 Rising | Murphy, Sean | Article in Journal | | 2016 |
| 1917 in Ireland - birth of the new Sinn Féin | Dillon, Thomas | Article in Journal | | 1967 |
| 200,000 volunteer soldiers | Orr, Philip | Article in Book | | 2008 |
| 200th anniversary of Frederic William Burton, 1816-1900 | Bourke, Marie | Article in Journal | | 2016 |
| 206The history of the GAA in Croghan Park | Mullaney, Thomas | Article in Book | | 2006 |
| 28 November 1634 : a detail of Strafford's administration | Clarke, Aidan | Article in Journal | | 1963 |
| 3,000 listen to Tom Barry's oration in 1948 : the 150th anniversary of the Battle of the Big Cross | Ó Súilleabháin, Cionnaith | Article in Book | | 1998 |
| A 'Catholic Wind' on Bantry Bay? | Kennedy, Gordon | Article in Journal | | 2017 |
| A 'most vainglorious man' : the writings of Antonius Bruodin | McInerney, Luke | Article in Journal | | 2017 |
| A Ballyduff boy in the new world: my grandfather, Tom Daly | Rovinsky, Robert | Article in Journal | | 2013 |
| A Baptist bibliography : being a register of the chief materials for Baptist history, whether in manuscript or in print, preserved in Great Britain, Ireland, and the colonies. Compiled for the Baptist Union of Great Britain and Ireland, 1 : 1526-1776; 2 : 1777-1837, and addenda from 1613. 2 vols. | Whitley, William Thomas, 1861-1947 | Monograph or Collective Volume | | 1916 |
| A bibliography of books by the O'Rahilly, Tom Clarke, Micheál Ó hAnnracháin and Countess de Markievicz | O'Hegarty, P. S. | Monograph or Collective Volume | [s.n.] | 1936 |
| A bibliography of books written by Thomas MacDonagh and Joseph Mary Plunkett | O'Hegarty, P. S. | Monograph or Collective Volume | Printed for the author by A. Thom | 1931 |
| A bibliography of Joseph Campbell | O'Hegarty, P. S. | Monograph or Collective Volume | Thomas | 1940 |
| A bibliography of T. W. Freeman's contributions to the geography of Ireland | Davies, K. M. (Kathleen Mary) | Article in Journal | | 1973 |
| A biographical dictionary of civil engineers in Great Britain and Ireland, volume 1 : 1500-1830 | | Monograph or Collective Volume | Thomas Telford | 2002 |
| A bit of New York history | Meehan, Thomas F. | Article in Journal | | 1907 |
| A blood red autumn : Thomas Russell and the Irish rising of 1803 | Gallagher, Francis P. | Monograph or Collective Volume | Fairythorn Press | 2003 |
| A bloodless revolution : the democratization of Irish local government, 1898-9 | Travers, Pauric | Article in Book | | 2001 |
| A Bride in Tallow, 1941-1942 | McIntyre, Brigid | Article in Journal | | 2018 |
| A brief history of the brewing industry in Kilkenny | Halpin, Thomas B. | Article in Journal | | 1989 |
| A British labourist in Catholic Ireland | Morgan, Austen | Article in Journal | | 1981 |
| A bronze ringed pin from Ballintemple, Tullaghobegley, Co. Donegal | Crumlish, RichardFanning, Thomas | Article in Journal | | 1992 |
| A Caledon ballad | Lynass, Benjamin | Article in Journal | | 2011 |
| A calendar of the letters of Thomas Bray, Archbishop of Cashel, 1792-1820 | Meagher, Mary T. | Thesis | | 1966 |
| A Cambro-Hibernian alliance : Maria Jane Williams and Thomas Crofton Croker | Owen, Morfydd E. | Article in Journal | | 1996 |
| A catalogue of Irish manuscripts in the Boston Atheneum | Buttimer, Cornelius G. | Article in Book | | 1983 |
| A Catholic's secret counsel to the British government on his Irish church | Hachey, Thomas E. | Article in Journal | | 1973 |
| A cause worth dying for : the last letters of Pearse, MacDonagh and Clarke | Ó Corráin, Daithí | Article in Book | | 2016 |
| A Celtic florilegium : studies in memory of Brendan O Hehir. | | Monograph or Collective Volume | Celtic Studies Publications | 1996 |
| A century of decline | Cosgrove, Art | Article in Book | | 1973 |
| A century of motor vehicle registration marks in the British Isles : including Channel islands, Ireland and Isle of Man | Bowden, Thomas N. | Monograph or Collective Volume | ATM | 2004 |
| A changing society : Ireland since the 1960s | Boylan, Thomas A.Curtin, ChrisLaver, Michael | Article in Book | | 1988 |
| A checklist of Irish titles | Farrell, James Thomas | Article in Journal | | 1968 |
| A chronicle of Comber : the town of Thomas Andrews, shipbuilder, 1873-1912 | Rainey, Desmond,Spence, Laura | Monograph or Collective Volume | Ulster Historical Foundation | 2011 |
| A Civil War letter by guerrilla Tom Barry to his Mother | O'Hare, Patricia | Article in Journal | | 2023 |
| A collection of the state letters of the Rt. Hon R. Boyle, the first earl of Orrery. 2 vols. | | Monograph or Collective Volume | | 1743 |
| A comparative study of the American Civil War sympathies of the Irish of Dublin, Belfast, New York and Boston | Burke, Paul Thomas | Thesis | | 2000 |
| A comparative study of the Irish and Scottish livestock trades in the seventeenth century | Woodward, Donald | Article in Book | Donald | 1977 |
| A complete system of the revenue of Ireland | Bacon, Thomas | Monograph or Collective Volume | | 1734 |
| A contemporary history of affairs in Ireland from A.D. 1641 to 1652. 3 vols. | | Monograph or Collective Volume | | 1879 |
| A contemporary narrative of the proceedings against Dame Alice Kyteler, prosecuted for sorcery in 1324 by Richard de Ledrede, bishop of Ossory | | Monograph or Collective Volume | | 1843 |
| A contract between king and people in early medieval Ireland? 'Críth Gabhlach' on kingship | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1994 |
| A copper farthing : Sir William Petty and his times, 1623-1687 | Jordan, Thomas Edward | Monograph or Collective Volume | University of Sunderland Press | 2007 |
| A cult of no personality: W.T. Cosgrave and the election of 1933 | Knirck, Jason | Article in Journal | | 2012 |
| A day in Drogheda and the new rubber wheel trap | Fleming, Eddie | Article in Journal | | 2016 |
| A description of a new standard for weights and measures; in a letter from Mr John Cooke, of Tipperary in Ireland, to Thomas Jefferson, Esq. | Cooke, John | Article in Journal | | 1793 |
| A description of Gort in 1752 by Thomas Wetherall | Barnard, T. C. (Toby Christopher)Wetherall, Thomas | Article in Journal | | 2009 |
| A description of Ireland: A.D. 1618 | McInerney, Luke | Article in Journal | | 2012 |
| A description of the Marward stone at Skyrne and a description of John Cusack who sculptured it | Hickey, Elizabeth | Article in Journal | | 1973 |
| A descriptive account of the County of Kildare in 1682 | Monk, Thomas | Article in Journal | | 1911 |
| A direction for the plantation in Ulster | Blenerhasset, Thomas | Monograph or Collective Volume | | 1610 |
| A discourse between two councillors of state, the one of England and the other of Ireland (1642) | | Article in Journal | | 1970 |
| A displaced intelligentsia : aspects of Irish Catholic thought in ancien régime France | Chambers, Liam | Article in Book | | 2001 |
| A distinguished Irish humanist : Bonaventure Baron, O.F.M., of Clonmel (1610-96) | Wall, Thomas | Article in Journal | | 1946 |
| A distinguished son of Leighlinbridge : Fr William Delany, S.J. (1835-1924) | Morrissey, Thomas J. | Article in Journal | | 1984 |
| A Donegal-born Covenanter Minister in South Carolina: Rev. Thomas Donnelly | Roulston, William | Article in Journal | | 2022 |
| A Dublin character : 'Bang-Bang' | Cashell, Ronan | Article in Journal | | 1987 |
| A Dublin streetscape in 1703: an urban legacy of the Dongan estate | Crimmins, Neil | Article in Journal | | 2017 |
| A Dubliner searches for Sodom and Gomorrah | O'Loughlin, Thomas | Article in Book | | 2015 |
| A duo of portraits : the 6th Earl of Ossory and the 4th Marquess of Ormonde | Stratton, J. Mark | Article in Journal | | 2012 |
| A fair exposition of the principles of the Whig Club, with some cursory observations on a pamphlet entitled 'Thoughts on a letter to Mr Conolly'. By an Irishman | Anonymous | Monograph or Collective Volume | | 1790 |
| A family affair? English hangmen and a Dublin jail, 1923-54 | Doyle, David M.O'Donnell, Ian | Article in Journal | | 2014 |
| A farewell to famine | Rees, Jim | Monograph or Collective Volume | Arklow Enterprise Centre | 1994 |
| A Fermanagh/Donegal abduction, 1839 | Blair, Raymond A. | Article in Journal | | 2012 |
| A figure from the past, Frederic Burton's Irish years | Flynn, Pat | Article in Book | | 2000 |
| A forgotten Clareman, Stephen Joseph Meany (1822-1888) | O'Connell, Gerald | Article in Book | | 2000 |
| A forgotten Irish antiquary : Chevalier Thomas O'Gorman, 1732-1809 | Hayes, Richard Francis | Article in Journal | | 1941 |
| A friend of the colonial powers? : Frank Aiken, Ireland's United Nations alignment and decolonisation | Bhreatnach, Aoife | Article in Book | | 2005 |
| A Galway election squib of 1783 | Bartlett, Thomas | Article in Journal | | 1979 |
| A Galway man meets John Brown before he was 'Mouldering in the grave' | O'Loughlin, Thomas | Article in Book | | 2015 |
| A Galway scion in India | Ó hAnnracháin, Eoghan | Article in Journal | | 2005 |
| A gatehouse to beyond the boundaries of the Pale : reflections on Rathcoffey, Co. Kildare | Quirke, Sinéad | Article in Book | | 2011 |
| A genealogical history of the O'Reillys, written in the eighteenth century by E. Ó Raghallaigh, and incorporting portion of the earlier work of T. Fitzsimons, Vicar General of the diocese of Kilmore | Carney, James Patrick, 1914-1989Ó Raghallaigh, Eóghan | Monograph or Collective Volume | An Cumann Seanchais Bhreifne | 1959 |
| A general dictionary of the English language, to which is prefixed a rhetorical grammar | Sheridan, Thomas | Monograph or Collective Volume | | 1780 |
| A great Clare man - honest Tom Steele | Ryan, Martin | Article in Journal | | 1978 |
| A great theatre of outrage and disorder : figuring Ireland in the Edinburgh Review, 1802-29 | Webb, T. | Article in Book | | 2002 |
| A hacksilver find from Dysart, Thomastown | Hall, Mark E. | Article in Journal | | 1993 |
| A history of Irish economic thought | | Monograph or Collective Volume | | 2009 |
| A history of Irish thought | Duddy, Thomas | Monograph or Collective Volume | Routledge | 2002 |
| A history of Kiltelly-Dromkeen (Co. Limerick) | Lundon, Thomas | Monograph or Collective Volume | [The author] | |
| A history of Northern Ireland, 1920-1996 | Hennessy, Thomas | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| A history of Northern Ireland, 1920-1996 | Hennessey, Thomas | Monograph or Collective Volume | Gill & Macmillan | 1997 |
| A history of the city of Dublin. 3 vols. | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Monograph or Collective Volume | Irish University Press | 1972 |
| A history of the county of Mayo to the close of the sixteenth century | Knox, H. T. (Hubert Thomas) | Monograph or Collective Volume | Hodges Figgis | 1908 |
| A history of the county of Mayo to the close of the sixteenth century | Knox, H. T. (Hubert Thomas) | Monograph or Collective Volume | | 1908 |
| A history of the Irish Church, 400-700 AD | Bradley, ThomasWalsh, J. R. | Monograph or Collective Volume | | 1991 |
| A history of the Irish church, 400-700 AD | Bradley, ThomasWalsh, John R. | Monograph or Collective Volume | Columba | 1993 |
| A history of the Irish protest against over-taxation from 1853 to 1897 | Kennedy, Thomas | Monograph or Collective Volume | | 1897 |
| A history of the Irish settlers in North America : from the earliest period to the census of 1850 | McGee, Thomas D'Arcy, 1825-1868 | Monograph or Collective Volume | Genealogical Pubg. Co. | 1974 |
| A history of the Justices of the Peace | Skyrme, Thomas, Sir | Monograph or Collective Volume | Rose | 1991 |
| A history of the king's sergeants at law in Dublin : honour rather than advantage | Hart, A. R. | Monograph or Collective Volume | Four Courts | 2000 |
| A history of the O'Cannons of Tir Chonaill | Cannon, Thomas Gildea | Article in Journal | | 1978 |
| A history of the peoples of the British Isles from 1870 to the present | Heyck, Thomas William | Monograph or Collective Volume | Routledge | 2002 |
| A history of the rise and progress of the people called quakers in Ireland, from the year 1653 to 1700 | Rutty, JohnWight, Thomas | Monograph or Collective Volume | # | 1751 |
| A history of the viceroys of Ireland. With notices of the castle of Dublin and its chief occupants in former times | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Monograph or Collective Volume | | 1865 |
| A house divided | MacNerney, James P. | Article in Journal | | 2006 |
| A hundred years : Irish language courses in American colleges | Ihde, Thomas W. | Article in Journal | | 1996 |
| A hundred years of Irish migration to France, 1590-1688 | Ó Ciosáin, Éamon | Article in Book | | 2001 |
| A Jacobite narrative of the war in Ireland, 1688-1691 | | Monograph or Collective Volume | | 1892 |
| A Jacobite narrative of the war in Ireland, 1688-1691 | Gilbert, J. T. (John Thomas), Sir, 1829-1898Simms, J. G. (John Gerald) | Monograph or Collective Volume | Irish University Press | 1971 |
| A justification for foreign intervention in early modern Ireland | O'Connor, Thomas | Article in Book | | 2003 |
| A Kildare poet | Sadlier, Thomas U. | Article in Journal | | 1928 |
| A Lampoon of Queen's College Galway, 1878 | Mac Mathúna, SéamusMohr, Paul | Article in Journal | | 2023 |
| A Lancastrian prince in Ireland | Blacker, Brian | Article in Journal | | 1998 |
| A legend in his time | Keogh, John | Article in Journal | | 1989 |
| A lesson from history : the urban battlefield and the 1916 Rising | Campbell, Liam | Article in Journal | | 2004 |
| A letter from a gentleman in the province of Munster to his grace the lord primate | Publicola [i.e. Thomas Dawson] | Monograph or Collective Volume | | 1741 |
| A letter from a prisoner of war. Etreux, France - September 1914 | Good, Billy | Article in Journal | | 2014 |
| A letter from an Irish emigrant (1799) : a vindication of the United Irish rebellion in the North | Birch, Thomas LedlieRobinson, Kenneth | Monograph or Collective Volume | Athol | 2005 |
| A letter from I.B. Gentleman : Sir Thomas Smith's Ulster scheme and its Scottish context | McMillan, Christopher | Article in Journal | | 2018 |
| A letter from Thomas Russell, Baron Killough to the Duke of Bedford in 1856 | McCormick, Finbar | Article in Journal | | 2002 |
| A letter to Lord Monteagle | Anonymous | Article in Journal | | 1990 |
| A letter to the people of Ireland on the present situation of the country | Russell, Thomas, Sir | Article in Book | | 2003 |
| A letter...to Thomas Prior, esq.; showing from experience, a sure method to establish the linen manufacture ... | Cox, Richard, Sir | Monograph or Collective Volume | | 1749 |
| A Liberal Lord Mayor of Dublin: Alderman George Roe (1796-1863) | Doran, Beatrice | Article in Journal | | 2023 |
| A line-impressed mosaic tile from Lusk church, Co. Dublin | Eames, E. S.Fanning, Thomas | Article in Book | | 1988 |
| A list of passenger shipping from Waterford port to America and Canada, 1845-1850 | Deegan, Thomas | Article in Journal | | 1995 |
| A literary guide to Ireland | Cahill, SusanCahill, Thomas | Monograph or Collective Volume | Wolfhound Press | 1979 |
| A local soldier's war | Anderson, Robert | Article in Journal | | 2006 |
| A man called Hughes : the life and times of Seamus Hughes, 1881-1943 | Morrissey, Thomas J. | Monograph or Collective Volume | Vertias | 1991 |
| A man of the Universal Church : Peter James Kenney, S.J., 1779-1841 | Morrissey, Thomas J. | Article in Journal | | 1999 |
| A man stepped out for death : Thomas Russell and county Down | | Monograph or Collective Volume | Colourpoint Books | 2003 |
| A man who can speak of plants : Dr Thomas Coulter (1793-1843) of Dundalk in Ireland, Mexico and Alta California | Nelson, E. CharlesProbert, Alan | Monograph or Collective Volume | E. Charles Nelson | 1994 |
| A map of Lough Gur | Ní Fhloinn, Bairbre | Article in Book | | 2012 |
| A map of the town of Mountrath two hundred years ago | Horner, Arnold | Article in Journal | | 2014 |
| A master gone .... | Standeven, Thomas L. | Article in Journal | | 1996 |
| A medieval tile pavement from Swords Castle, Co. Dublin | Fanning, Thomas | Article in Journal | | 1975 |
| A memoir of the Right Rev. James Thomas O'Brien, late Lord Bishop of Ossory ... | Carroll, W. G. | Monograph or Collective Volume | | 1875 |
| A military analysis of the Easter Rising | Campbell, Liam | Article in Journal | | 2006 |
| A military history of Ireland | | Monograph or Collective Volume | Cambridge University Press | 1996 |
| A minister's money account for Clonmel, 1703 | | Article in Journal | | 1987 |
| A mission re-imagined: All Hallows College | Dalzell, Thomas G. | Article in Book | | 2012 |
| A monument ot Archbishop Thomas Walsh in the town of Cashel, Co. Tipperary | Fitzpatrick, Liz | Article in Journal | | 1994 |
| A Mossley mystery (Ashton-under-Lyne Manchester England) | O'Reilly, Séamus | Article in Journal | | 2017 |
| A most peculiar Carlow murder trial | Breathnach, Seamus | Article in Journal | | 2006 |
| A nation in medieval Ireland? : perspectives on Gaelic national identity in the middle ages | Finan, Thomas | Monograph or Collective Volume | Archaeopress | 2004 |
| A nation of nonconformists : Thomas Rees (1815-85) and nonconformist history | Morgan, Prys | Article in Book | | 2013 |
| A neglected Irish poet | Taylor, Geoffrey | Article in Journal | | 1942 |
| A new chronology of the Saint's life | Carney, James Patrick, 1914-1989 | Article in Book | | 1958 |
| A new Edmund Burke letter from 1778 | Walsh, Patrick | Article in Journal | | 2009 |
| A newly discovered 'Kerin' tomb at Thomastown, county Kilkenny | Harris, Amy Louise | Article in Journal | | 2000 |
| A Noble Tribute - Sarah Cecilia Harrison's portrait of Anna and Thomas Haslam | Baker, Hannah | Article in Journal | | 2021 |
| A notable convert | O'Connor, R. F. | Article in Journal | | 1914 |
| A notable Irish physician | Widdess, J. D. H. | Article in Journal | | 1957 |
| A notable Irish soldier, Thomas O'Meara | Hayes, Richard Francis | Article in Journal | | 1949 |
| A note on Sinn Féin in Ireland | Kettle, Thomas Michael, 1880-1916 | Article in Journal | | 1908 |
| A note on St Mary's parish, Thurles | Johnstone, Harden | Article in Book | | 1989 |
| A note on Thomas Frye | Wynne, Michael | Article in Journal | | 1970 |
| A passion for books : the Gilbert Library | Kennedy, Máire | Article in Book | | 1999 |
| A pastoral letter to the catholic clergy of the united dioceses of Waterford and Lismore | Hussey, Thomas | Monograph or Collective Volume | | 1797 |
| A personal memoir of the thirties | Ó hEidirsceoil, Seán | Article in Book | | 1994 |
| A personal narrative of those transactions in the county of Wexford in which the author was engaged, during ... 1798 | Cloney, Thomas | Monograph or Collective Volume | | 1832 |
| A perspective on Ireland | O'Neill, Thomas Patrick | Article in Book | | 1986 |
| A philosophical survey of the south of Ireland, in a series of letters to John Watkinson, M.D. | [Campbell, Thomas] | Monograph or Collective Volume | | 1777 |
| A philosophy of charity and the debates over the English and Irish Poor Laws in the 1830s | McGauran, John-PaulOffer, John | Article in Journal | | 2017 |
| A pioneer of Irish traditional music | MacMahon, Bryan, 1909-1998 | Article in Journal | | 1992 |
| A Playright's festival | Kilroy, Thomas | Article in Book | | 2008 |
| A plea for restoration of the Ancient Church of St. David, Naas, County Kildare | Drew, Thomas | Monograph or Collective Volume | Thomas Drew | 1878 |
| A poetry of masks : the poet’s persona in early Celtic poetry | Tymoczko, Maria | Article in Book | | 1996 |
| A Political casualty of the Easter Rising | O'Donnell, Seán | Article in Journal | | 2016 |
| A political odyssey : Thomas O'Donnell M.P. for west Kerry 1900-1918 | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1983 |
| A portrait of Thomas Cloney : how it was produced | O'Leary, John | Article in Journal | | 1964 |
| A priest in politics : Rev. Thomas Tyrell, P. P., Tinryland, 1823-43 | Kavanagh, P. J. | Article in Journal | | 1976 |
| A profile of the Nobel prizewinner from Dungarvan : Ernest T. S. Walton | Editors, The | Article in Journal | | 1996 |
| A project to re-house the St Canice's Cathedral Library from Kilkenny to Maynooth University Library | McCormack, BarbaraMurphy, Hugh | Article in Journal | | 2019 |
| A provisional list of imported pottery in post-Roman western Britain and Ireland | Thomas, Charles | Monograph or Collective Volume | Institute of Cornish Studies | 1981 |
| A raid on the inarticulate : the poetry of Thomas MacGreevy | Schreibman, Susan | Article in Journal | | 1994 |
| A rapid assessment framework for Irish habitats: a case study of "Machaire" habitat quality | Gorman, ThomasKindermann, GescheMorley, Thomas | Article in Journal | | 2018 |
| A remarkable Roscommon doctor John F. Knott. Contemporary of Sir William Wilde, friend and contemporary of Douglas Hyde and of Surgeon Major T.H.Parke | Smith, Des | Article in Journal | | 1994 |
| A reprimand to Dr Freddie Stock | McDonald, Thomas | Article in Journal | | 2004 |
| A review of Irish agricultural prices | Barrington, Thomas | Article in Journal | | 1927 |
| A rooted horror : Thomas D'Arcy McGee and secret societies, 1845-68 | Wilson, David A. | Article in Journal | | 2005 |
| A saint of the month | Brodrick, James | Article in Journal | | 1946 |
| A Scotch-Irish Clan in Middle
Georgia? The Migration
and Development of a McCarty
Family across Two Centuries | Knight, Thomas Daniel | Article in Journal | | 2019 |
| A Scots engineer in Ireland : centenary of Thomas Drummond | Veitch, James H. | Article in Journal | | 1940 |
| A select bibliography of county Waterford | Brady, Donald | Article in Book | | 1992 |
| A short account of some of the seafarers from Wicklow Town who were lost at sea through inclement weather and war | Byrne, Tom | Article in Journal | | 2020 |
| A short history of Irish memory in the long twentieth century | Beiner, Guy | Article in Book | | 2018 |
| A short history of the medical school, Trinity College, Dublin | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1941 |
| 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 calender of the papers of Archbishop William Croke in Archbishop's House, Thurles, 2 : 1886-1890 | Tierney, Mark | Article in Journal | | 1974 |
| A single currency for the British Empire? a warning for the Euro | Mohr, Thomas | Article in Journal | | 2013 |
| A Skerries bishop | Halpin, P. | Article in Journal | | 1998 |
| A soldier's letter home | Ó Muirithe, Diarmaid | Article in Journal | | 1990 |
| A soldier's prescription for the governance of Ireland, 1599-1601 : Captain Thomas Lee and his tracts | McGurk, J. N. N. (John James Noel) | Article in Book | | 2011 |
| A soldier's story of the American civil war | Guerin, Thomas | Article in Journal | | 1953 |
| A soul came into Ireland : Thomas Davis 1814-1845 | Molony, John Neylon | Monograph or Collective Volume | Geography Publications | 1995 |
| A source for Edmund Spenser's "Blandina" in Holinshed's Irish Chronicle (1587) | Herron, Thomas, 1968- | Article in Journal | | 2001 |
| A souring of friendships? Internal divisions in the leadership of the Irish Parliamentary Party in the aftermath of the Easter rising | Mulvagh, Conor | Article in Book | | 2015 |
| A star of the Beneda, 1834 | Wack, Mary F. | Article in Journal | | 2018 |
| A statistical and historical enquiry into the progress and magnitude of the population of Ireland | Newenham, Thomas | Monograph or Collective Volume | | 1805 |
| A stone shrine for a relic of St Thomas Becket in Dublin? | Duffy, PaulO'Keeffe, Tadhg | Article in Journal | | 2017 |
| A story of growth and change : Dublin 1560-1800 | Cullen, L. M. (Louis Michael) | Article in Book | | 1995 |
| A street in San Francisco | Coakley, Teddy | Article in Journal | | 2011 |
| A study of the function of history in schools in England and Ireland between 1828 and 1962 | Holohan, Thomas Francis | Thesis | | 1989 |
| A survey of the ancient churches in the county of Limerick | Westropp, Thomas Johnston | Article in Journal | | 1904 |
| A survey of Thomastown Castle ruins 2003 | Higgins, N. | Article in Journal | | 2003 |
| A sword for Christ : the republican era in Great Britain and Ireland | Cobb, Jonathan | Monograph or Collective Volume | Birlinn | 2021 |
| A tale of doomsday Columcille should have left untold | | Article in Book | | 2001 |
| A tale of two portraits of Lady Iveagh, otherwise Mrs Thomas Butler of Kilcash | Kirwan, John | Article in Journal | | 2014 |
| A theology thesis defended by an Irish clerical student in Paris in 1739 | | Article in Journal | | 1997 |
| A touch of green in the White House | McCarthy, Jack | Article in Journal | | 1981 |
| A tour of Kildare in 1732 | Sadlier, Thomas U. | Article in Journal | | 1914 |
| A training school for rebels: Fenians in the French Foreign Legion | McConnel, JamesÓ Catháin, Máirtín | Article in Journal | | 2008 |
| A transcription and notes towards an edition of the Zoilomastix of Philip O'Sullivan Beare (Uppsala University Library, MS.H.248) | O'Donnell, Thomas J., Rev. | Thesis | | 1941 |
| A tree-ring chronology of ash from Viking Dublin | Daly, Aoife | Article in Book | | 1998 |
| A tribute to the late Monsignor Pádraig de Brún | MacGreevy, Thomas | Article in Journal | | 1961 |
| A troublesome death in Callan Poorhouse, 1852 | Kavanagh, Myra D. | Article in Journal | | 2016 |
| A true Celt : Thomas Davis, The Nation, rebellion and transportation : a series of essays | | Monograph or Collective Volume | Mount Jerome Historical Project | 1998 |
| A true discourse historicall of the succeeding governors in the Netherlands and the civil wars ... with the memorable services of our ... English ... soldiers especially under Sir John Norice ... from the yeere 1577 until the yeere 1589, and afterwards in Portugall, France, Britaine and Ireland until the yeere 1598 | Churchyard, Thomas, 1523?-1604Meteren, Emanuel vanRobinson, Richard | Monograph or Collective Volume | | 1602 |
| A true relation of the life and death of the Right Reverend father in God William Bedell, Lord Bishop of Kilmore in Ireland | Bedell, William, d. 1670Jones, Thomas Wharton | Monograph or Collective Volume | Printed for the Camden Society | 1872 |
| A typology of settlement and society in county Waterford, c.1850 | Burtchall, Jack | Article in Book | | 1992 |
| A United Irish family : the McCabes of Belfast | McCabe, John | Article in Journal | | 1997 |
| A Victorian household | Dillon, Eilís | Article in Book | | 1980 |
| A view from the Mississippi | Dowling, Joe | Article in Book | | 2004 |
| A view of Irish rural housing in the 1840s | Gailey, Alan | Article in Book | | 1986 |
| A view of the natural, political, and commercial circumstances of Ireland | Newenham, Thomas | Monograph or Collective Volume | | 1809 |
| A virtual Ireland : approaches to the Field Day Anthology of Irish Writing | Herron, Thomas, 1968- | Thesis | | |
| A visitor to Cork in 1775 | | Article in Journal | | 1993 |
| A walk around Mallow | McCarthy, Thomas | Article in Journal | | 2002 |
| A West Cork officer in the service of France: Thomas Brown of Castlehaven (1786-1847) | Dunne-Lynch, Nicholas | Article in Journal | | 2017 |
| A Whiteboy and a "summer famine" thief | Keneally, Thomas | Article in Book | | 1996 |
| A writer's Wicklow | Mansfield, Jagoda de Valera | Article in Journal | | 2001 |
| A Yankee poet's Irish headwaters | Murray, Aífe | Article in Journal | | 2002 |
| About the Irish Institute of Hellenic Studies | Loughlin, Thomas | Article in Book | | 2012 |
| Acallam na Senórach | Murphy, Gerard | Article in Book | | 1959 |
| Account of facsimiles of national manuscripts of Ireland from the earliest specimens to A.D. 1719 | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Monograph or Collective Volume | | 1884 |
| Across the briny ocean : some thoughts on Irish emigration to America 1800-1850 | Ó Gráda, Cormac | Article in Book | | 1983 |
| Acts of union, an inaugural lecture delivered at University College Dublin, Faculty of Arts on 24 February 2000 | Bartlett, Thomas | Monograph or Collective Volume | University College Dublin | 2000 |
| Adae Murimuth continuatio chronicarum. Robertus de Avesbury de gestis mirabilibus regis Edwardi Tertii | | Monograph or Collective Volume | | 1889 |
| Adam's grave, Adam's soul and our souls, the doctrine of the three letters, and Clm 6235 | De Paor, John | Article in Book | | 1999 |
| Address by Archbishop Dermot Clifford at the unveiling of a plaque to Dr Croke in The Square, Tralee, on April 16 2011 | Clifford, Dermot | Article in Journal | | 2012 |
| Adiutor laborantium : a poem by Adomnán? | Márkus, Gilbert | Article in Book | | 2010 |
| Administrative divisions and the development of settlement in nineteenth-century Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1964 |
| Adomnán : a man of many parts | O'Loughlin, Thomas | Article in Book | | 2001 |
| Adomnán among the bird-hunters : tradition and creativity in 'Beannachadh Seilg' | Low, Mary | Article in Book | | 2010 |
| Adomnan and 'mora rotunditas' | O'Loughlin, Thomas | Article in Journal | | 1996 |
| Adomnán and Donegal | Lacey, Brian | Article in Book | | 2010 |
| Adomnan and the holy places | O'Loughlin, Thomas | Monograph or Collective Volume | T & T Clark | 2007 |
| Adomnán and the Holy Places : the perceptions of an Insular monk on the locations of the biblical drama | O'Loughlin, Thomas | Monograph or Collective Volume | T&T Clark | 2007 |
| Adomnán at Birr, AD 697 : essays in commemoration of the law of the innocents | O'Loughlin, Thomas | Monograph or Collective Volume | Four Courts | 2001 |
| Adomnán in medieval Gaelic literary tradition | Clancy, Thomas Owen | Article in Book | | 2010 |
| Adomnán of Iona : theologian, lawmaker, peacemaker | | Monograph or Collective Volume | Four Courts | 2010 |
| Adomnan the illustrious | O'Loughlin, Thomas | Article in Journal | | 1995 |
| Adomnán's De Locis Santis : a textual emendation and an additional source identification | O'Loughlin, Thomas | Article in Journal | | 1997 |
| Adomnán's plans in the context of his imagining 'the most famous city' | O'Loughlin, Thomas | Article in Journal | | 2012 |
| Adomnán's voyaging saint : the cult of Cormac ua Liatháin | Tipp, Dan,Wooding, Jonathan M., | Article in Book | | 2010 |
| AE and Sir Horace Plunkett | Byrne, J. J. | Article in Book | | 1960 |
| Affiliations and origins of the Catechesis Celtica. An ongoing quest | McNamara, Martin | Article in Book | | 1999 |
| Agha Church : architectural iconography and building ambiguities | Ní Ghrádaigh, Jenifer | Article in Book | | 2008 |
| Agherton Parish, Portstewart : a brief history | Thomas, Avril | Monograph or Collective Volume | Display Aids | 1996 |
| Agony at Easter : the 1916 Irish uprising | Coffey, Thomas | Monograph or Collective Volume | Harrap | 1970 |
| Agrarian disturbances around Crosmaglen, part IX, The attack on James Eastwood | McKeown, ThomasMcMahon, Kevin | Article in Journal | | 2002 |
| Agrarian disturbances around Crossmaglen, 1835-1855, part 5 | McKeown, ThomasMcMahon, Kevin | Article in Journal | | 1986 |
| Agrarian disturbances around Crossmaglen, part 10, the shooting of Meredith Chambre | McKeown, Thomas | Article in Journal | | 2003 |
| Agricultural productivity and economic development in Ireland and Scotland in the early nineteenth century | Solar, Peter Michael | Article in Book | | 1983 |
| Agriculture and other natural resources | O'Connor, Robert | Article in Book | | 1986 |
| Agriculture and the manorial economy in County Carlow in the late thirteenth century | Down, Kevin | Article in Book | | 2008 |
| Aiken's mission to the United States in 1941 : a reinterpretation | Barlow, Dorothy | Article in Journal | | 1994 |
| Alas, poor Mogue! The journey, 1798-1953. 1798 revisited | Kavanagh, Myles | Article in Journal | | 2018 |
| Alchemy of shadows. | McBride, Stephanie | Article in Journal | | 2019 |
| Alderman Daniel Burke - Grocer, Tea, Wine and Spirit Merchant | Burke, Thomas | Article in Journal | | 2014 |
| Alderman Tom Kelly | Carden, Sheila | Article in Book | | 2016 |
| Alderman Tom Kelly and the Municipal Gallery | Carden, Sheila | Article in Journal | | 2001 |
| Aldfrith of Northumbria and the learning of a sapiens | Ireland, Colin | Article in Book | | 1996 |
| Alexander Martin Sullivan, 1829-84 | Martin, Thomas Francis | Thesis | | 1981 |
| Allagher 'Chlann Tomáis' | Harrison, Alan, 1943- | Article in Journal | | 1975 |
| Alleys, annals and anecdotes: a new look at Gilbert’s History of Dublin | Ó Maitiú, Séamas | Monograph or Collective Volume | Dublin City Public Libraries | 2015 |
| Ambushes and armour in the War of Independence: Kilmichael reconsidered | Kautt, William H. | Article in Journal | | 2010 |
| America called : the Helen Hackett Gallery and the Irish art rooms, 1924-1934 | O'Connor, Éimear | Article in Journal | | 2011 |
| American dream | White, Lawrence | Article in Journal | | 2010 |
| Among the Irish martyrs : Dominic Collins, S.J., in his times (1566-1602) | Morrissey, Thomas J. | Article in Journal | | 1992 |
| Amongst women: Thomas Moore and classical inspiration | Moore, Jane | Article in Book | | 2018 |
| An 'odd accident' at the Yellow Lion Inn, Thomas Street, 1739 | Donnelly, Seán | Article in Journal | | 2019 |
| An 18th century episcopal instruction for Ossory | Costello, Con | Article in Journal | | 1983 |
| An 18th-century Dublin life of St Patrick | Wall, Thomas | Article in Journal | | 1962 |
| An account of the Parliament House, Dublin, with notice of parliaments held there, 1661-1800 | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Monograph or Collective Volume | | 1896 |
| An account of the Whiteboys from the 1790s | Bartlett, Thomas | Article in Journal | | 1991 |
| An active acting-governor : Thomas Francis Meagher's adminsitration in Montana territory | Thane, James L. | Article in Journal | | 1971 |
| An ancient record relating to the families into which were married the co-heiresses of Thomas fitz Anthony, seneschal of Leinster | | Article in Journal | | 1864 |
| An antique and storied land : a history of the parish of Donoughmore, Knockea, Roxborough and its environs in County Limerick | Greensmyth, HarryToomey, Thomas | Monograph or Collective Volume | The authors | 1991 |
| An apparent funerary anomaly from seventeenth-century Waterford | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 1998 |
| An architect earl : Edward Augustus Stratford (1736-1801) 2nd Earl of Aldborough | Lightbown, Ronald W | Monograph or Collective Volume | OLL Editions | 2008 |
| An architectural study of Kilfane House | Walsh, Walter | Article in Journal | | 2009 |
| An ascendancy and its vampires. | Lysaght, D.R. O'Connor | Article in Journal | | 2012 |
| An early English perfumer: William Dungan of St. Martin-in-the-Fields, C. 1600-1636. His ancestry, life and family | Dungan, Thomas P. | Monograph or Collective Volume | Otter Bay Books | 2017 |
| An early Irish reaction to Malthus | Ó Gráda, Cormac | Article in Journal | | 1991 |
| An early thirteenth-century map in Dublin : a window into the world of Giraldus Cambrensis | O'Loughlin, Thomas | Article in Journal | | 1999 |
| An early-19th century map with artistic merit | McCorry, F.X. | Article in Journal | | 2019 |
| An ecclesiastical history of Great Britain, chiefly of England, from the first planting of Christianity to the end of the reign of King Charles the Second, with a brief account of the affairs of religion in Ireland. 2 vols. | Collier, Jeremy | Monograph or Collective Volume | | 1708 |
| An ecological analysis of the Irish Green Party's vote in the 1989 general election | O'Toole, Luke | Article in Book | | 1998 |
| An economic factor in the Wexford rebellion of 1798 | Powell, Thomas | Article in Journal | | 1976 |
| An eighteenth century Irish gentleman's diary | Sadler, Thomas | Article in Journal | | 1953 |
| An eighteenth century miscellany | Moylan, Thomas King | Article in Journal | | 1948 |
| An eighteenth century sword by Thomas Shephard of Dublin | Perceval-Price, M. C.Seaby, W. A. | Article in Journal | | 1968 |
| An eighteenth-century account of Keating and his Foras feasa ar Éirinn | | Article in Journal | | 1961 |
| An eighteenth-century dwarf | Sadlier, Thomas U. | Article in Journal | | 1928 |
| An eighteenth-century version of diasporic Irish identity | Byrne, Thomas | Article in Book | | 2005 |
| An Elizabethan political painting | De Breffny, Brian | Article in Journal | | 1984 |
| An emigrant Waldron family | Poulin, Anna Waldron | Article in Journal | | 1997 |
| An end to moral economy : the Irish militia disturbances of 1793 | Bartlett, Thomas | Article in Book | | 1987 |
| An end to moral economy : the Irish militia disturbances of 1793 | Bartlett, Thomas | Article in Journal | | 1983 |
| An enlightened utilitarian : Thomas Drummond (1797-1840) | Jordan, Thomas E. | Article in Journal | | 2003 |
| An era of upheaval | Ó Cuív, Brian | Article in Book | | 1961 |
| An essay on perfecting the fine arts in Great Britain and Ireland | [Campbell, Thomas] | Monograph or Collective Volume | | 1767 |
| An essay on the manufactures of Ireland, in which is considered to what manufactures her natural advantages are best suited, and what are the best means of improving such manufactures | Wallace, Thomas | Monograph or Collective Volume | | 1789 |
| An examination of the Auxiliary Division, Royal Irish Constabulary, exploring possible links between conduct and conflict-related injury, traumatic experiences and stress | Gardiner, Eamonn T. (Eamonn Thomas) | Thesis | | 2017 |
| An excavation at St Thomas's Church, Rathlin Island, County Antrim | Gormley, Sarah | Article in Journal | | 2009 |
| An experiment or a new departure? Aiken in Finance, 1945-1948 | Keelan, Conor | Article in Book | | 2014 |
| An extract from Strafford's inquisition : Galway corporation property, in 1637 | | Article in Journal | | 1997 |
| An fhilíocht a leagtar ar Ghearóid Iarla i Leabhar Fhear Maí : iontaofa nó bréagach | Mac Mathúna, Séamus | Article in Book | | 2010 |
| An Ghaeilge i gCeatharloch : athbheochan agus athnuachan, 1972-2008 | Ó Néill, Caoimhín | Article in Book | | 2008 |
| An Hedge School Education: how Thomas Guerin of Aherlow learned maths | | Article in Journal | | 2013 |
| An history of the life of James, Duke of Ormonde. 3 vols | Carte, Thomas | Monograph or Collective Volume | | 1735 |
| An imaginative empiricist : Thomas Aiskew Larcom, 1801-1879 and Victorian Ireland | Jordan, Thomas E. | Monograph or Collective Volume | Edwin Mellen Press | 2002 |
| An insular brooch-fragment from Norway | Fanning, ThomasWhitfield, Niamh | Article in Journal | | 1988 |
| An introduction | Cornish, Rory T.Hearne, John M. | Article in Book | | 2006 |
| An Irish (?) interpolation in Caesarius of Arles' Sermo 84 | O'Loughlin, Thomas | Article in Journal | | 1993 |
| An Irish absentee and his tenants, 1768-92 | Alger, J. G. | Article in Journal | | 1895 |
| An Irish family between assimilation and revolution : the Keatings of Poitiers, 1777-1795 | Jahan, Sébastien | Article in Book | | 2003 |
| An Irish geological pioneer in the American West: Thomas Condon (1822-1907) | Davies, Gordon L. | Article in Journal | | 1970 |
| An Irish hero in the Great American West | Chambers, Mary Ellen | Article in Journal | | 2008 |
| 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 mandarin : Sir Robert Hart in China 1854-1908 | O'Leary, Richard | Article in Book | | 2009 |
| An Irish medieval tile pavement : recent excavations at Swords Castle, County Dublin | Fanning, Thomas | Article in Journal | | 1975 |
| An Irish military tradition? | Bartlett, ThomasJeffery, Keith | Article in Book | | 1996 |
| An Irish missionary in India : Thomas Gavan Duffy and 'The Catechist of Kil-Arni' | Bateman, Fiona | Article in Book | | 2006 |
| An Irish missionary in Pretoria | McCormack, Barbara | Article in Book | | 2015 |
| An Irish republican abroad : Thomas Francis Meagher in the United States, 1852-65 | Cornish, Rory T. | Article in Book | | 2006 |
| An Irish rural parish, past and present : Muintir Bhaire (Co. Cork) | Walsh, T. J. (Thomas Joseph) | Article in Journal | | 1972 |
| An Irish scandal: the marriage breakdown of Lord and Lady George Beresford | Lockhart, Elayne | Article in Journal | | 2013 |
| An Irish settlement on the Amazon (1612-29) | Gwynn, Aubrey | Article in Journal | | 1931 |
| An Irish theologian in enlightenment France : Luke Joseph Hooke, 1714-96 | O'Connor, Thomas | Monograph or Collective Volume | Columba | 1995 |
| An Irish working class : explorations in political economy and hegemony, 1800-1950 | Silverman, Marilyn | Monograph or Collective Volume | University of Toronto Press | 2001 |
| An Irish-American odyssey : the remarkable rise of the O'Shaughnessy brothers | Kenny, Colum | Monograph or Collective Volume | University of Missouri Press | 2014 |
| An O'Connellite in Whitehall : Thomas Crofton Croker, 1798-1854 | Hultin, Neil C.Ober, Warren U. | Article in Journal | | 1993 |
| An officer's memoir of Wexford in 1798 | Bartlett, Thomas | Article in Journal | | 1988 |
| An open letter to Thomas MacDonagh | Skeffington, Francis Sheehy | Monograph or Collective Volume | Irishwomen's International League | 1915 |
| An Ossory instruction of 1773 | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Article in Journal | | 1994 |
| An Rúiséalach sa tuaisceart, 1803 | Mac Giolla Easpuig, S. E. | Article in Journal | | 1955 |
| An tEasbog Tomás Mhac Comhain (1831-1847) | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1946 |
| An tEasbog Tomás Ó Coisdealbha, 1786-1831 | Mac Fhinn, Pádraig Eric, 1895-1987 | Article in Journal | | 1945 |
| An unlikely pilgrim : Buck Whaley in the Holy Land | McConvery, Brendan | Article in Book | | 2015 |
| An unrecorded Yeats item | Yeats, W. B. (William Butler), 1865-1939 | Article in Journal | | 1961 |
| An urban place in rural Ireland : an historical ethnography of domination, 1841-1989 | Silverman, Marilyn | Article in Book | | 1993 |
| Anacreon Moore and the Prince of Pleasure: George IV as Satiric Inspiration | Vail, Jeffrey | Article in Book | | 2018 |
| Ancient Naas | De Burgh, Thomas J. | Article in Journal | | 1895 |
| And shall these mute stones speak? Post-Roman inscriptions in western Britain | Thomas, Charles | Monograph or Collective Volume | University of Wales Press | 1994 |
| And so we made "The Dawn" | O'Cahill, Donal | Article in Journal | | 1937 |
| Andrew MacDonagh : the Irish Monte-Cristo | Joannon, Pierre | Article in Book | | 2006 |
| Angela Burdett-Coutts : 'Queen of Baltimore' | Ungood-Thomas, Jasper | Article in Journal | | 2017 |
| Anglica, Hibernica, Normannica, Cambrica, a veteribus scripta | Camden, William, 1551-1623 | Monograph or Collective Volume | Impensis C. Marnij, & hæredum I. Aubrij | 1602 |
| Anglo-Irish poetry 1700-1850 | McHugh, Roger | Article in Book | | 1973 |
| Anglo-Norman county Waterford, 1200-1300 | Empey, C. A. (Adrian) | Article in Book | | 1992 |
| Anglo-Norman elite, pilgrims and the Hiberno-Norse in the medieval cemetery of St Thomas the Martyr, Dublin: osteoarchaeological evidence | Tobin, Maeve | Article in Book | | 2023 |
| Animal charm cures and amulets | Davidson, Thomas | Article in Journal | | 1957 |
| Animal contact : livestock approaches to understanding social boundaries in later medieval Roscommon | Immich, Jennifer L.,Soderberg, John, | Article in Book | | 2010 |
| Animals make the man : violence, masculinity, and the colonial project in Derricke's Image of Ireland | Soderberg, John | Article in Book | | 2021 |
| Annales hiberniae, 1162-1370 | | Article in Book | | 1884 |
| Annales monasterii Beata Marie Virginis, juxta Dublin | Case, ThomasGilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1965 |
| Annals of Ireland : fragment : A.D. 1308-1310 and 1316-1317 | | Article in Book | | 1965 |
| Annals of Ireland, A.D. 1162-1370 | | Article in Book | | 1965 |
| Anne Jane Carlile (1775-1864), a pioneer of temperance | Barron, Thomas J. | Article in Journal | | 1963 |
| Another side of Thomas Moore | Kelly, Ronan | Article in Journal | | 2003 |
| Anselm of Bec and Thomas of Becket : the monastic ego in medieval church-state relations | Tiernan, Frances | Article in Journal | | 2003 |
| Answers to objections to their petition for a grant of the Ards, 1571 | Barrow, ThomasBrowne, Thomas | Article in Book | | 2016 |
| Antiquarian scholarship and the archaeology of Cahermacnaghten, Burren, Co. Clare | Fitzpatrick, Elizabeth | Article in Journal | | 2008 |
| Anxiety and influence : Derricke's Image of Irelande and the Mirror for Magistrates tradition | Lucas, Scott | Article in Book | | 2021 |
| Apostates or imperialists? W. T. Cosgrave, Kevin O'Higgins, and republicanism | Knirck, Jason | Article in Journal | | 2010 |
| Apotheosis and crisis : the Irish diaspora in the age of Choiseul | Cullen, L. M. (Louis Michael) | Article in Book | | 2006 |
| Appendix : standards of public expenditure in Northern Ireland | Robson, Peter | Article in Book | | 1955 |
| Appendix I. Election results by constituency ; Appendix 2: Election results by provinces ; Appendix 3: 1923 election results by constituency, based on first preferences | | Article in Book | | 2023 |
| Approaching Ireland's later historical archaeology : people and society 1824-1926 | Hennessy, Eiden | Thesis | | |
| Archaeological excavations at the abbey of St Thomas the Martyr, Dublin | Walsh, Claire | Article in Book | | 2000 |
| Archaeological excavations at the mill-pond of St. Thomas's abbey, Dublin | Myles, Franc | Article in Book | | 2009 |
| Archaeology of the Burren : prehistoric forts and dolmens in north Clare | Westropp, Thomas Johnston | Monograph or Collective Volume | Clasp Press | 1999 |
| Archaeology, early Christian remains and local histories : Paddy Healy's Dublin | Healy, Patrick Thomas, 1916-2000 | Monograph or Collective Volume | South Dublin Libraries | 2004 |
| Archbishop Carpenter and the Catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| Archbishop Croke and Saint Colman's | Forde, Robert | Article in Journal | | 2003 |
| Archbishop Fleming, patriot and scholar | Barrett, Fergus | Article in Journal | | 1941 |
| Archbishop James Butler II : catechist to generations at home and abroad | Wallace, Patrick, [Rev.] | Article in Book | | 1989 |
| Archbishop John Carpenter and the catholic revival, 1770-86 | Wall, Thomas | Article in Journal | | 1955 |
| 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 Slattery and the episcopal controversy on Irish national education, 1838-41 | McGrath, Thomas | Article in Journal | | 1984 |
| 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 the 1913 Lock-out | Morrissey, Thomas J. | Article in Journal | | 2013 |
| Archives of Galway | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1885 |
| Archives of the municipal corporation of Waterford | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1885 |
| Archives of the municipal corporation of Waterford | | Article in Book | | 1885 |
| Archives of the see of Dublin | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1885 |
| Archives of the see of Ossory : Right Rev. W. Pakenham Walsh, D.D., bishop of Ossory, Ferns, and Leighlin | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1885 |
| Ardagh House. Billof measurements of works excecuted at Ardagh in 1861 for the Dowager Lady Featherston by Wm Thomas H. Carroll, builder. J.Rawson Carroll Esq., architect | | Article in Journal | | 2008 |
| Ardgillan Castle Revealed | Herron, Aidan J. | Monograph or Collective Volume | self-published | 2018 |
| Ardrahan Castle | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1911 |
| Are you related to Sapper T. W. Roach? | Evans, Jeff | Article in Journal | | 2010 |
| Aristotle, Greco-Roman imagery, and the Irish in Europe : the classical context in the seventeenth century | Mc Laughlin, Gráinne | Article in Book | | 2010 |
| Armorial carved stones at Daingean | Fear Ceall, pseud. | Article in Journal | | 1941 |
| Army and society in eighteenth-century Ireland | Bartlett, Thomas | Article in Book | | 1990 |
| Army organisation and society in the nineteenth century | Spiers, Edward M. | Article in Book | | 1996 |
| Arrival of the Lord-Lieutenant at Cork. From "The Illustrated London News" of June 19th, 1852 | | Article in Journal | | 2018 |
| Art and architecture in Ireland, 1880–2016 | Murphy, Paula | Article in Book | | 2018 |
| Arthur Griffith | White, Terence De Vere | Article in Book | | 1960 |
| Arthur Griffith and Sinn Féin | Ó Lúing, Seán | Article in Book | | 1967 |
| 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 |
| Aspects of pre-famine Irish household size : composition and differentials | Carney, F. J. | Article in Book | | 1977 |
| Aspects of sexual behaviour in nineteenth-century Scotland | Smout, Thomas Christopher | Article in Book | | 1980 |
| Aspects of the literary activity of the Irish Franciscans in Prague, 1620-1786 | Mac Craith, MícheálWorthington, David | Article in Book | | 2003 |
| Aspects of the role of the Holy Office in Irish church affairs in the early seventeenth century | O'Connor, Thomas | Article in Book | | 2009 |
| Athenry | Rynne, Etienne | Article in Book | | 1995 |
| Athlone | Murtagh, Harman | Article in Book | | 1994 |
| Athlone Canal - the first Athlone By-Pass | O'Brien, Gearoid | Article in Journal | | 1998 |
| Athy and the Great War | Taaffe, Frank | Article in Book | | 2006 |
| Authority and disorder in Tudor times, 1485-1603 | Thomas, Paul | Monograph or Collective Volume | Cambridge University Press | 1999 |
| Avoca : our mining heritage : a brief history of metal mining in the Vale of Avoca, county Wicklow | McArdle, PeadarThomas, Alan | Monograph or Collective Volume | Geological Survey of Ireland | 1998 |
| Bad day at Ardnaree | McDonnell, Thomas | Article in Journal | | 1986 |
| Bad press : Thomas Campbell Foster and British reportage on the Irish famine, 1845-1849 | Williams, Leslie | Article in Book | | 2000 |
| Balchder Erin | Thomas, W. C. | Monograph or Collective Volume | C. Davies | 1978 |
| Ballads and poems of the County Kildare. No. XII. The Geraldines, by Thomas Davis | Davis, Thomas | Article in Journal | | 1911 |
| Ballingarry | MacDonagh, Donagh | Article in Book | | 1945 |
| Ballykine Castle | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1903 |
| Bandon | O'Flanagan, Patrick | Article in Book | | 1994 |
| Bang Bang | Kelly, Aidan | Article in Journal | | 2011 |
| Bangor | Robinson, Philip S. | Article in Book | | 1995 |
| Bard of Erin : the life of Thomas Moore | Kelly, Ronan | Monograph or Collective Volume | Penguin Ireland | 2008 |
| Bards and Bruodins | Wall, Thomas | Article in Book | | 1957 |
| Baron Monteagle of Brandon and the famine 1845-1848 | Murphy, Charlotte | Article in Journal | | 1991 |
| Baron Monteagle of Brandon and the Famine, 1845-1848 | Murphy, Charlotte | Article in Journal | | 1995 |
| Barry's flying column | Butler, Ewan | Monograph or Collective Volume | Cooper | 1971 |
| Bastard feudalism and the Kildare Rebellion, 1534-35 : the character of rebel support | Ellis, Steven G., 1950- | Article in Book | | 2006 |
| Bearing witness : female evidences in courts martial convened to suppress the 1798 rebellion | Bartlett, Thomas | Article in Book | | 1998 |
| Beatha agus bás Thomás Ruiséal | Ó Murchú, Noel | Monograph or Collective Volume | An Sagart | 2018 |
| Beatha Shan Tomáis Chantarbuirí i lámhscríbhinní na hochtú aoise déag : réamhfhiosrú beag | Herbert, Máire | Article in Book | | 2013 |
| Bechbretha, an old Irish law-tract on bee-keeping | NA | Monograph or Collective Volume | Dublin Institute for Advanced Studies | 1983 |
| Beckett reviewing MacGreevy : a reconsideration | Kennedy, Seán | Article in Journal | | 2005 |
| Becoming convinced : the use of Quaker testimonies in late seventeenth-century Ireland | Hynes, Sandra | Article in Book | | 2005 |
| Becoming myself : the true story of Thomas who became Sara | Cromwell, Sara-Jane, | Monograph or Collective Volume | Gill and Macmillan | 2008 |
| Bede, the Irish and the Britons | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1983 |
| Bedell's old testament | | Article in Journal | | 1942 |
| Before and after St John’s hospital: evidence for a pre-Anglo-Norman cemetery on Thomas Street found on the shelves of Trinity College Dublin | Gapert, RenéHarbison, Joseph | Article in Book | | 2023 |
| Before the ballad: Gaelic narrative verse before 1200 | Clancy, Thomas Owen | Article in Journal | | 2008 |
| Beginning to talk to ‘Billy’ : Revising southern stereotypes of Unionism | Harris, Eoghan | Article in Book | | 2015 |
| Behind the scenes at an excavation: Millin Bay, Summer 1953 | Chapple, Robert | Article in Journal | | 2014 |
| Beirt Scríbhneoirí Mhaigh Cuilinn: Pádraic Breathnach mar oidhre ar Thomás Bairéad? | Ní Chualáin, Aingeal | Article in Book | | 2020 |
| Belfast and Glasgow : connections and comparisons 1790-1850 | Butt, John | Article in Book | | 1983 |
| Belfast General & Commercial Directory for 1819 ... With a directory and history of Lisburn, etc. | Bradshaw, Thomas | Monograph or Collective Volume | | 1819 |
| Below sea-level in the city of Cork | Hurley, Maurice F. | Article in Book | | 1995 |
| Benjamin Woodward | O'Dwyer, FrederickWilliams, J. | Article in Book | | 1980 |
| Between 1789 and 1798 : the 'revolution in the form of thought' in Ireland | Metscher, Thomas | Article in Journal | | 1989 |
| Between Captain Rock and a hard place : art and agrarian insurgency | Gibbons, Luke | Article in Book | | 1998 |
| Beyond any reasonable doubt? Irish murder trials | Deale, Kenneth E. L. | Monograph or Collective Volume | Fitzbaggot Publications | [2007] |
| Beyond ethnography : primary data sources in the urban anthropology of Northern Ireland | Jenkins, Richard | Article in Book | | 1993 |
| Beyond the Joycean Pale: Ferdia Mac Anna's Howth Castle and environs | O'Grady, Thomas | Article in Book | | 2013 |
| Beyond the library walls : John Paul II annual lectures | | Monograph or Collective Volume | St Patrick's College | 1995 |
| Beyond the seas : the transportation of William Smith O'Brien | Kavanagh, Joan | Article in Book | | 1998 |
| Bibliography : a checklist of publications on the 1790s, the United Irishmen and the 1798 rebellion, 1900-2002 | Whelan, Kevin | Article in Book | | 2003 |
| Bibliography of Young Ireland | | Article in Book | | 1945 |
| Bibliotheca Britannico-Hibernica sive de scriptoribus ... | Tanner, ThomasWilkins, David | Monograph or Collective Volume | | 1748 |
| Bibliotheca Britannico-Hibernica sive de scriptoribus, etc. | Tanner, ThomasWilkins, David | Monograph or Collective Volume | | 1748 |
| Bibliotheca Quiniana | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1946 |
| Bile ós Chrannaibh: a festschrift for William Gillies | | Monograph or Collective Volume | Clann Tuirc | 2010 |
| Bilingual education in Ireland 1904-1922 : the case of the bilingual programme of instruction | O'Donoghue, Thomas A., 1953- | Monograph or Collective Volume | Centre for Irish Studies, Murdoch University | 2000 |
| Bilingual education in Ireland in the late nineteenth and early twentieth centuries | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1988 |
| Billy O'Reilly - bootmaker : a tradition fades away | Shanahan, Daniel | Article in Journal | | 2001 |
| Biographia Britannica Literaria; or Biography of Literary Characters of Great Britain and Ireland, arranged in chronological order. 2 vols. | Wright, Thomas, 1810-1877 | Monograph or Collective Volume | | 1842 |
| Biographical dictionary of European labor leaders | | Monograph or Collective Volume | Greenwood | 1995 |
| Birr and the law of the innocents | Ní Dhonnchadha, Máirín | Article in Book | | 2001 |
| Birrell, Nathan, and the men of Dublin Castle | Ó Broin, León, 1902-1990 | Article in Book | | 1967 |
| Birth pangs of a new nation : Senator Thomas Westropp Bennett and the Irish Free State | Finch, Bruce-Andrew | Article in Journal | | 2003 |
| Bishop Barrett and King Richard III | O'Neill, Thomas Patrick | Article in Book | | 1991 |
| Bishop Cartwright's death-bed | Beddard, Robert | Article in Journal | | 1984 |
| 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 James Keeffe of Kildare and Leighlin, 1702-1787, and the foundation of Carlow College | McGrath, Thomas | Article in Journal | | 2016 |
| Bishop O'Beirne and his church-building programme: the Church of Ireland and pre-Reformation Christianity | Gallagher, Caroline | Article in Book | | 2017 |
| Bishop Thomas Lewis O'Beirne and his church-building programme in the diocese of Meath, 1798-1823 | Gallagher, Mary C. | Thesis | | 2009 |
| Bishop Thomas Lewis O'Beirne of Meath (c. 1747-1823) politician and churchman | Gallagher, Caroline | Article in Journal | | 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 Thomas Percy's contributions to Langland scholarship : Two annotated Piers Plowman prints in Belfast | Thompson, John J. | Article in Book | | 2004 |
| Bishops and abbots of Cloyne | Kelleher, Thomas | Article in Book | | 1994 |
| Bishops of Kildare and Leighlin, 1715-1819 : pastoral, political and educational contexts | McGrath, Thomas | Article in Book | | 2006 |
| Black Ireland's Race : Thomas Carlyle and the Young Ireland Movement | Dugger, Julie M. | Article in Journal | | 2006 |
| Black Tom of Ormonde | Falls, Cyril Bentham | Article in Journal | | 1961 |
| Black Tom's "house" at Kilkenny Castle, Ireland | Murtagh, Ben | Monograph or Collective Volume | | 2020 |
| Black Tom's "House" at Kilkenny Castle, Ireland | Murtagh, Ben | Article in Journal | | 2020 |
| Blessed John Henry Newman and the holy eucharist | Norris, Thomas | Article in Book | | 2012 |
| Blood sacrifice for queen and country : Paramilitarism and political manoeuvrings | Hutchinson, Billy | Article in Book | | 2015 |
| Boiseries, bankers and bills : a tale of Charlemont and Whaley | Casey, Christine | Article in Book | | 2001 |
| Bolands Mills Ringsend | Kerney, Niall | Article in Journal | | 2022 |
| Bolt upright : the life of Thomas Moore | Jordan, H. H. | Monograph or Collective Volume | [s.n.] | 1975 |
| Bookbinding in Ireland | Clarke, DesmondO'Neill, Thomas Patrick | Article in Journal | | 1955 |
| Booking passage : we Irish and Americans | Lynch, Thomas | Monograph or Collective Volume | Jonathan Cape | 2005 |
| Books signed by Pádraic Mac Piarais and Éamon de Valera and others | Ó Muirí, Réámonn | Article in Journal | | 2011 |
| Born in Ireland, buried in Canada | Radigan, Thomas B. | Article in Journal | | 1994 |
| Boston Catholics : a history of the church and its people | O'Connor, Thomas H., 1922-2012 | Monograph or Collective Volume | Northeastern University Press | 1998 |
| Botanists of the North of Ireland | Lett, H.W., Canon | Article in Journal | | 1913 |
| Boundaries in Irish law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1976 |
| Boundaries in Irish law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1976 |
| Bowdlerizing the bawdy : translations of Dáibhí Ó Bruadair's "Seirbhíseach seirgthe" | O'Grady, Thomas B. | Article in Journal | | 1997 |
| Boxed rituals : Eamon de Valera, television and Talbot's Box | Jaros, Michael | Article in Book | | 2014 |
| Boycott : there are many ways to fight a war | Murphy, Colin | Monograph or Collective Volume | Brandon | 2012 |
| Boyle's unmanageable Geraldine : the conundrum of Thomas of Rostellan, 1605-12 | Edwards, David, 1963- | Article in Journal | | 2024 |
| Brady's Castle, Thomastown, Co. Kilkenny : a 14th-century fortified town house | Bradley, John, 1954-2014Murtagh, Ben | Article in Book | | 2003 |
| Brasil and the legendary islands of the North Atlantic : their history and fable : a contribution to the 'Atlantis' problem | Westropp, Thomas Johnston | Article in Journal | | 1912 |
| Bravery awards for father and son from Dun Laoghaire | Knight, Leslie | Article in Journal | | 2002 |
| Bray | Davies, K. M. (Kathleen Mary) | Article in Book | | 1994 |
| Brazil and the legendary islands of the North Atlantic : their history and fable : A contribution to the 'Atlantis' problem | Westropp, Thomas Johnston | Article in Journal | | 1913 |
| Breaking the silence : the education of the deaf in Ireland, 1816-1996 | Crean, Edward J. | Monograph or Collective Volume | Irish Deaf Society | 1997 |
| Breaking the silence; England, Ireland, Wilson and the war | Gaffney, Thomas St. John | Monograph or Collective Volume | Liveright | 1930 |
| Breifne's Mountain Man | Murphy, Pat | Article in Journal | | 2012 |
| Brendan's European tour: the Middle Irish poem Mochen, mochen, a Brénaind and the changing nature of pilgrimage in the eleventh century | Clancy, Thomas Owen | Article in Book | | 2006 |
| Bretha Comaithcheso – An Old Irish Law Tract on Neighbouring Farms | | Monograph or Collective Volume | Institiúid Ardléinn Bhaile Átha Cliath | 2022 |
| Breton manuscripts of Biblical and Hiberno-Latin texts | McKee, Helen | Article in Book | | 1999 |
| Brian Boru and the battle of Clontarf | Ó Corráin, Donnchadh | Article in Book | | 1986 |
| Bridget Nixon 1855-1934 | Cullen, Seamus | Article in Journal | | 2013 |
| Brigid, Patrick and the Kings of Kildare A.D. 640-850 | Swift, Catherine | Article in Book | | 2006 |
| Britain and Ireland in early Christian times, A.D. 400-800 | Thomas, Charles | Monograph or Collective Volume | Thames & Hudson | 1971 |
| Britain and Irish Separatism : from the Fenians to the Free State 1867-1922 | Hachey, Thomas E. | Monograph or Collective Volume | Rand McNally | 1977 |
| British imperial statutes and Irish law : imperial statutes passed before the creation of the Irish Free State | Mohr, Thomas | Article in Journal | | 2010 |
| British imperial statutes and Irish sovereignty : statutes passed after the creation of the Irish Free State | Mohr, Thomas | Article in Journal | | 2011 |
| British South Africa Police : a force at war | Steen, Trevor T. | Monograph or Collective Volume | Kudu | 1997 |
| Britishness, Irishness and the Act of Union | Bartlett, Thomas | Article in Book | | 2001 |
| Britons in Ireland, c.550-800 | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1999 |
| Broadcasting - the early decades | Cathcart, Rex | Article in Book | | 1984 |
| Broadcasting on the island of Ireland, 1916-2016 | Savage, Robert J. | Article in Book | | 2018 |
| Brotherhood at arms : the Cairnes-Leslie controversy | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | | 2000 |
| Brothers-in-arms | Toohey, Jon | Article in Journal | | 2008 |
| Bruited abroad : John White and Thomas Harriot's colonial representations of ancient Britain | Hadfield, Andrew | Article in Book | | 2002 |
| Brut y Tywsogyon, or , the chronicle of the princes : red book of Hergest version | | Monograph or Collective Volume | University of Wales Press | 1955 |
| Buck Whaley: Ireland’s greatest adventurer | Ryan, David | Monograph or Collective Volume | Merrion Press | 2019 |
| Buried among the saints | O'Loughlin, Thomas | Article in Book | | 2016 |
| Burke in Belfast : Thomas MacKnight, Gladstone and Liberal Unionism | Maume, Patrick | Article in Book | | 2010 |
| Burton at the National Gallery. [...historical figures associated with Sir Frederic William Burton RHA (1816-1900),...in the current exhibitioin at the ...NGI] | Bourke, Marie | Article in Journal | | 2017 |
| Business and labour in Irish society, 1945-70 | Pratschke, John L. | Article in Book | | 1979 |
| Cad d'imigh ar Thomás Ó Caiside | Titley, Alan | Article in Journal | | 2024 |
| Cairnes on land, laissez-faire: an Irish challenge to political economy | Boylan, T.A.Foley, T. P. | Article in Book | | 2009 |
| Cairnes, Hearn and Bastable : the contribution of Queen's College, Galway, to economic thought | Boylan, Thomas A.Foley, Timothy P. | Article in Book | | 1984 |
| Caitlin : the life of Caitlin Thomas | Ferris, Paul | Monograph or Collective Volume | Hutchinson | 1993 |
| Calendar of Bray papers | Meagher, Claude | Article in Journal | | 1970 |
| Calendar of the ancient records of Dublin in the possession of the municipal corporation. [19 vols.] | Gilbert, J. T. (John Thomas), Sir, 1829-1898 ; Gilbert, R. M. (Rosa Mulholland), Lady | Monograph or Collective Volume | By the Authority of the Municipal Council | |
| Calendar of the Carew manuscripts preserved in the archiepiscopal library at Lambeth. 6 vols. | | Monograph or Collective Volume | | 1867 |
| Calendar of the papers of Dr Bray, archbishop of Cashel and Emly (1792-1820) | Meagher, Claude | Article in Journal | | 1968 |
| Callan: sovereigns, burgesses, and town commissioners | Shelly, Thomas | Article in Journal | | 1879 |
| Camp California: where Meagher's men steeled themselves for war | Brannigan, Niall R. | Article in Journal | | 2012 |
| Canon John O'Rourke : historian of the Great Famine | Comerford, R.V. (Richard Vincent) | Article in Book | | 1995 |
| Canon Tom and the City of Taghmon | Scallan, Eithne | Article in Journal | | 2005 |
| Canonicity and radical evangelicalism: the case of Thomas Kelly | Sweetnam, Mark | Article in Book | | 2012 |
| Capital in the Irish economy | Lee, J. J. (John Joseph), 1942- | Article in Book | | 1969 |
| Capital organisation and ethnic exploitation : consequences for miner solidarity and protest (1850-79) | Keil, Thomas J. | Article in Journal | | 1982 |
| Captain and kern and knight-in-arms : martial identities and the subject of conquest in Derricke's Image of Irelande | Moroney, Maryclaire | Article in Book | | 2021 |
| Captain Edward Meysey Thomas | Taylor, James W. | Article in Journal | | 2024 |
| Captain George Whitfield Pepper (1833-1899), Chaplain, 80th Ohio Volunteers: friend of meagher, interviewer of Lee | Ferguson, Kenneth | Article in Journal | | 2012 |
| Captain Jeremiah O'Brien of Machias, Maine | Cahill, Thomas | Article in Journal | | 1938 |
| Captain Mayne Reid - Irish soldier and novelist | Sweeney, William Montgomery | Article in Journal | | 1925 |
| Captain Thomas Henry Healy | Fitzgerald, Ivan | Article in Journal | | 2018 |
| Captain Thomas Troy, 1860-1904 | Rees, Jim | Article in Journal | | 2010 |
| 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 of Leighlinbridge, 1830-1911 | Ó Fearghail, Fearghus | Article in Book | | 2008 |
| Cardinal Wolsey, the native affinities, and the failure of reform in Henrician Ireland | Fitzsimons, Fiona | Article in Book | | 2004 |
| Career wives or wicked stepmothers? | Scott, Brendan | Article in Journal | | 2009 |
| Carl Gilbert Hardebeck | MacGreevy, Thomas | Article in Journal | | 1946 |
| Carlingford | Gleeson, Carol | Article in Book | | 1995 |
| Carlow : history and society : interdisciplinary essays on the history of an Irish county | | Monograph or Collective Volume | Geography Publications | 2008 |
| Carlow : the manor and town, 1674-1721 | King, Thomas, 1955- | Monograph or Collective Volume | Irish Academic Press | 1997 |
| Carlow born philanthropist | Eager, A. R. | Article in Journal | | 2005 |
| Carlow born philanthropist, Thomas Pleasants, and the Royal Dublin Society | Eager, A. R. | Article in Journal | | 1972 |
| Carlow Gael | Thomas, Peter | Article in Journal | | 1983 |
| Carlow history and society : a select bibliography | Flahavan, CarmelKing, Thomas, | Article in Book | | 2008 |
| Carlow town and its hinterland in the eighteenth-century | King, Thomas | Article in Book | | 2008 |
| Carlyle and Ireland | Goldberg, Michael
| Article in Journal | | 1979 |
| Carrickfergus | Robinson, Philip S. | Article in Book | | 1994 |
| Carrickmacross | Duffy, Patrick J. | Article in Book | | 1995 |
| Carson : unionist and rebel | Beckett, J. C. (James Camlin) | Article in Book | | 1967 |
| Carter Day Nursery. Gift by Mr. Patrick Carter, member of the executive council, in honor of deceased son | Murray, Thomas Hamilton | Article in Journal | | 1909 |
| Cartography and utilitarianism versus culture : Thomas Colby and the Ordnance Survey of Ireland | McWilliams, Patrick | Article in Journal | | 2008 |
| Carved medieval font at Thomastown | MacGarry, Damian C. | Article in Journal | | 1980 |
| Casement and German help | McHugh, Roger Joseph | Article in Book | | 1967 |
| Cashel | O'Keeffe, Tadhg | Article in Book | | 1995 |
| Cashel diocesan archives | Tierney, Mark | Article in Book | | 1989 |
| Castlecomer | Nolan, William | Article in Book | | 1994 |
| Castlehaven's Munster campaign of 1645 | McCarthy, Patrick | Article in Journal | | 2021 |
| Castlerock - Echoes of the Boer war | Warke, Geoff | Article in Journal | | 2018 |
| Castletown's Batty Langley Lodge | Morel, Thomas | Article in Journal | | 2014 |
| Catalogue of Irish manuscripts in the Royal Irish Academy. [28 fasc. and 2 index vols.] | | Monograph or Collective Volume | Royal Irish Academy|Hodges Figgis | 1926-1970 |
| Catalogue of Irish manuscripts in Villanova University, Pennsylvania | Mahon, William | Monograph or Collective Volume | School of Celtic Studies, Dublin Institute for Advanced Studies | 2007 |
| Catalogue of the books and manuscripts Comprising the Library of the late Sir John T. Gilbert, LL.D, F.C.A., M.R.I.A. | | Monograph or Collective Volume | Brown and Nolan, Limited | 1918 |
| Cath Maige Muccrime | Carney, James Patrick, 1914-1989 | Article in Book | | 1959 |
| Cath Maige Tuired | Ó Cuív, Brian | Article in Book | | 1959 |
| Cathedral music in the Church of Ireland under the Stuarts | Houston, Kerry | Article in Book | Four Courts Press | 2025 |
| Catherine Amelia O'Brien, artist in stained glass (1881-1963) | O'Connell, Gerald | Article in Book | | 2000 |
| Catholic and Protestant Dublin weavers before the Spanish Inquisition, 1745-54 | O'Connor, Thomas | Article in Book | | 2016 |
| Catholic archives of the United States | O'Connor, Thomas F. | Article in Journal | | 1946 |
| Catholic emancipation | Nowlan, Kevin B. | Article in Book | NA | 1986 |
| Catholic Greenwich village : ethnic geography and religious identity in New York City, 1880-1930 | Shelley, Thomas | Article in Journal | | 2003 |
| Catholic influence and the secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1999 |
| 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 unionism and heterodoxy in Irish Victorian medicine : a biography of Thomas More Madden, 1838-1902 | Kennerk, Barry | Article in Journal | | 2016 |
| Catholicism in Ireland 1880–2015: rise, ascendancy and retreat | Ó Corráin, Daithí | Article in Book | | 2018 |
| Catholics in economic life | Wall, Maureen (née Mac Geehin) | Article in Book | | 1969 |
| Catholics in Northern Ireland, 1926-1939 | Kennedy, David | Article in Book | | 1967 |
| Cattle-lords and clansmen : the social structure of early Ireland | Patterson, Nerys Thomas | Monograph or Collective Volume | University of Notre Dame Press | 1994 |
| Ceannt, Devoy, O'Rahilly and the military plan | O'Donoghue, Florence | Article in Book | | 1967 |
| Ceatharlach i 1798 : nua amharc ar na staraithe | Ó Snodaigh, Pádraig | Article in Book | | 2008 |
| Celebrating Columba / Colm Cille á cheiliúradh: Irish-Scottish connections 597-1997 | | Monograph or Collective Volume | John Donald | 1999 |
| Celebration and controversy in America : At home with the Scots-Irish diaspora | McReynolds, AlisterWilson, John | Article in Book | | 2015 |
| Celibacy in the Catholic church : a brief history | O'Loughlin, Thomas | Article in Journal | | 1995 |
| Cellular meanings, monastic beginnings | Thomas, Charles | Article in Journal | | 1995 |
| Celtic kings : "priestly vegetables"? | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2009 |
| Celtic penance : its sources, affiliations and influence | Oakley, Thomas Pollock | Article in Journal | | 1938 |
| Celtic religion and Celtic society | Dillon, Myles | Article in Book | | 1964 |
| Celtic spirituality | | Monograph or Collective Volume | Paulist | 1999 |
| Celtic theology : humanity, world, and God in early Irish writings | O'Loughlin, Thomas | Monograph or Collective Volume | [s.n.] | 2000 |
| Celtic Tiger, Celtic climate | McCarthy, Thomas | Article in Journal | | 1997 |
| Celticism, Catholicism and Colonialism:
The Intellectual Frontiers of Thomas D’Arcy McGee | Wilson, David A. | Article in Journal | | 2009 |
| Cenél nÉogain in Patrician hagiography | Charles-Edwards, Thomas | Article in Journal | | 2020 |
| Censorship and the moral community | Murphy, John A. | Article in Book | | 1984 |
| Centenary of All Hallows College | O'Donnell, Thomas J. | Article in Journal | | 1942 |
| Centering Spenser : a digital resource for Kilcolman castle | | Website | | 2014 |
| Challenging narratives : an early modern house at Carstown, Co. Louth | Corcoran, Michael | Article in Book | | 2011 |
| Challoner in Ireland | Wall, Thomas | Article in Journal | | 1946 |
| Challoner's contemporaries in Ireland | Wall, Thomas | Article in Journal | | 1946 |
| Change in Ulster in the late eighteenth century | Crawford, W. H. (William Henry) | Article in Book | | 1979 |
| Changing Land: Diaspora Activism and the Irish Land War | Whelehan, Niall | Monograph or Collective Volume | New York University Press | 2021 |
| Changing the constitution : amendment and judicial review | Casey, James | Article in Book | | 1988 |
| Charles Carroll of Carrollton, signer of the declaration of independence | Phelan, Thomas P. | Article in Journal | | 1915 |
| Charles Dickens and Thomas Moore | O'Sullivan, Donal | Article in Journal | | 1948 |
| Charles Gavan Duffy | MacNamara, Brinsley | Article in Book | | 1945 |
| Charles Haliday's pamphlet collection | Bartlett, Thomas | Article in Book | | 2009 |
| Charles Joseph Kickham and John O'Leary | Green, E. R. R. | Article in Book | | 1968 |
| Charles O'Conor of Belanagare and Thomas Leland's 'philosopical' history of Ireland | Love, W. D. | Article in Journal | | 1962 |
| Charles Stewart Parnell | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1973 |
| Charlotte Brontë's Kilkee honeymoon | Byrne, Thomas J. | Article in Journal | | 1998 |
| Charming views and sweet inequalities | Nelson, E. Charles | Article in Journal | | 2006 |
| Chartularies of St Mary's abbey, Dublin; with the register of its house at Dunbrody, and annals of Ireland. 2 vols. | | Monograph or Collective Volume | | 1884 |
| Cheating the fell destroyer | Rooney, Brendan | Article in Journal | | 2011 |
| Chief Justice Taney and the Dred Scott decision | Lee, Thomas Z. | Article in Journal | | 1923 |
| China and the Irish | | Monograph or Collective Volume | New Island | 2009 |
| China comes to Ireland | Mac Cormaic, Ruadhán | Article in Book | | 2009 |
| Chopin, a link with Tom Moore and Ireland | De Valera, Terry, 1922-2007 | Article in Journal | | 2001 |
| Christianity in Roman Britain to AD 500 | Thomas, Charles | Monograph or Collective Volume | NA | 1981 |
| Christmas trees and waistcoat buttons | Malone, J. B. | Article in Book | | 1980 |
| Chronica sive historia de rebus Glastoniensibus | Glastonbury, John of, fl. 1400Hearne, Thomas | Monograph or Collective Volume | [s.n.] | 1726 |
| Chronicles of Enguerrand de Monstrelet | De Monstrelet, EnguerrandJohnes, Thomas | Monograph or Collective Volume | [s.n.] | 1867 |
| Chronicon Westroporum | Irwin, Liam | Article in Journal | | 2001 |
| Chronological annotations to 250 letters of Thomas Moore | Pearsall, Robert Brainard | Article in Journal | | 1969 |
| Church and state in modern Ireland, 1923-1970 : an appraisal reappraised | Bartlett, Thomas | Article in Book | | 2002 |
| Church Music: A Barometer of Social-Religious Change | Muir, Thomas | Article in Book | Oxford University Press | 2023 |
| Church of St. Michael and All Angels, Clane | Trench, Thomas Cooke | Monograph or Collective Volume | Charles W. Gibbs [printer] | 1894 |
| Church Organization and Pastoral Care | Pickles, Thomas F. | Article in Book | | 2009 |
| Church, crown and corporation in Waterford city, 1520-1620 | Walton, Julian | Article in Book | | 1992 |
| Church, state and society | Keogh, Dermot | Article in Book | | 1988 |
| Church, state and society, 1950-70 | Whyte, John | Article in Book | | 1979 |
| Churches of Galway, Kilmacduagh and Kilfenora | May, Thomas M. | Monograph or Collective Volume | The author | 2000 |
| Circling the square : a Thurles prospect | O'Driscoll, Dennis | Article in Book | | 1989 |
| Citizen Kane, mayor of Limerick | Tierney, Mark | Article in Book | | 1997 |
| Citizenship on the ethnic frontier : nationality, migration and rights in Northern Ireland since 1920 | Leahy, ThomasÓ Dochartaigh, Niall | Article in Book | | 2018 |
| Civil engineers - Thomas Telfrod and a few others | Tait, J. Brian | Article in Journal | | 2008 |
| Civilizing a nation : reflections on elementary education in nineteenth-century Ireland | Boylan, Ciara M.Boylan, Thomas A. | Article in Book | | 2015 |
| Clan and settler in Ormond | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1914 |
| Clans are not primordial : pre-Viking Irish society and the modelling of pre-Roman societies in northern Europe | Patterson, Nerys Thomas | Article in Book | | 1995 |
| Class and social mobility | Whelan, Christopher T. | Article in Book | | 1986 |
| Class, religion and society in Limerick, 1922 – 1939 | Keane, Thomas | Thesis | | 2016 |
| Classical and gothic : studies in the history of art | McCarthy, Michael (Michael Joseph), 1939-2010 | Monograph or Collective Volume | Four Courts | 2005 |
| Classics in the van of the Irish revolt : Thomas MacDonagh 'alien to Athens and Rome'? | Moloney, Eoghan | Article in Book | | 2020 |
| Claude Auchinleck, 1884-1981 : military leader | Fraser, Thomas G. | Article in Book | | 1992 |
| Clemency and compensation : the treatment of defeated rebels and suffering loyalists after the 1798 rebellion | Bartlett, Thomas | Article in Book | | 2000 |
| Clergy of Clogher : biographical succession lists | Leslie, J. B. (James Blennerhassett) | Monograph or Collective Volume | Ulster Historical Foundation | 2006 |
| Cliffe Leslie, Irish social reform and the origin of the English Historical School of Economics | Koot, G. M. | Article in Journal | | 1975 |
| Cloak without dagger : Dr Thomas Hussey, 1746-1803 | Murphy, Martin | Article in Journal | | 1988 |
| Clonmel apprentices in Bristol, 1541-1566 | O'Brien, Niall C. E. J. | Article in Journal | | 2019 |
| Clontarf, 1914 | MacDonagh, Thomas | Article in Journal | | 1914 |
| Clothed with variety : discovering the formal and figurative texture of Derricke's Image of Irelande | Woodcock, Matthew | Article in Book | | 2021 |
| Coláiste na Tríonóide agus an Éirí Amach | Ní Mhaoláin, Niamh | Monograph or Collective Volume | Trinity College, Dublin | 2015 |
| Coleraine | Gillespie, Raymond | Article in Book | | 1995 |
| Coleraine : Archibald Stewart's report and map, 1738 and 1758 | Thomas, Avril | Article in Journal | | 1998 |
| Coleraine Town Hall - a short history | Anderson, Robert | Article in Journal | | 2008 |
| Collected works | Boylan, Thomas A.Cairnes, J. E.Foley, Timothy P. (Tadhg) | Monograph or Collective Volume | Routledge | 2004 |
| Collection, space and display: a case study in the symbolic materiality of print and manuscript cultures in seventeenth-century Ireland | Caball, Marc | Article in Journal | | 2021 |
| College communities abroad : Education, migration and Catholicism in early modern Europe | | Monograph or Collective Volume | Manchester University Press | 2017 |
| Colonel Gray : pioneer of the west | O'Connor, Richard C. | Article in Journal | | 1911 |
| Colonel John Fitzgerald | Phelan, Thomas P. | Article in Journal | | 1919 |
| Colonel Thomas Bellingham's diary | | Article in Journal | | 1904 |
| Colonel Thomas Blood | Petherick, Maurice | Article in Journal | | 1948 |
| Colonel Thomas Blood and the Restoration political scene | Marshall, Alan | Article in Journal | | 1989 |
| Colonel Thomas Blood, crown-stealer, 1618-1680 | Abbott, Wilbur Cortez | Monograph or Collective Volume | | 1911 |
| Colonel Thomas Dongan, of Castletown-Kildrought, soldier and statesman | O'Grady, John Sheil | Article in Journal | | 1905 |
| Colonel Thomas James Kelly (1833-1908) and the "Bold Fenian Men | Tierney, Anne | Article in Journal | | 2008 |
| Colonialism, education and social change in the British Empire : the cases of Australia, Papua New Guinea and Ireland | O'Donoghue, Thomas A., 1953- | Article in Journal | | 2009 |
| Columba 1500 - the extent of our knowledge | O'Loughlin, Thomas | Article in Journal | | 2021 |
| Columba, Adomnan and the cult of saints in Scotland | Clancy, Thomas Owen | Article in Journal | | 1997 |
| Commandant Deignan of Riverstown | Harte, Cian | Article in Journal | | 2017 |
| Commemorating Croke : ethnic nationalism as spectacle | Ó Drisceoil, Mary | Article in Journal | | 2004 |
| Commemorating Thomas Davis | Ó hAnnracháin, Eoghan | Article in Journal | | 2014 |
| Commemorations and celebrations | Egan, SiobhánGaffey, EilishHanks, David | Article in Book | | 1998 |
| Commerce between Ireland and Rhode Island | Murray, Thomas Hanalton | Article in Journal | | 1906 |
| Commerce, conquest and change: Thomas Hickey's 'John Mowbray, Calcutta Merchant, attended by a Banian and a messenger' | McDermott, Siobhan | Article in Book | | 2016 |
| Commerce, Contraband, and Intrigue : Thomas O'Gorman in the Río de la Plata, 1797-1806 | Cooney, Jerry W. | Article in Journal | | 2004 |
| Commissioners under the Patriot Parliament, 1689 | Preston, Christopher | Article in Journal | | 1950 |
| Commissioning of bishop's messengers, St. Thomas's Church, Belfast | | Monograph or Collective Volume | [St. Thomas's Church] | 1953 |
| Commonplaces on preaching among commonplaces for preaching? The topic praedicacio in Thomas of Ireland's manipulus florum | Nighman, Chris L. | Article in Journal | | 2005 |
| Communications and community : problems and prospects | Farrell, Brian | Article in Book | | 1984 |
| Communications and community in Ireland | | Monograph or Collective Volume | Mercier Press in collaboration with RTE | 1984 |
| Communism in Dublin in the 1930s : the struggle against fascism | O'Riordan, Manus | Article in Book | | 1994 |
| Comparative aspects of Scottish and Irish economic and social history, 1600-1900 | | Monograph or Collective Volume | Donald | 1977 |
| Comparing Scotland and Northern Ireland | Bruce, Steve | Article in Book | | 2000 |
| Components of Irish nationalism | McCaffrey, Lawrence J., 1925- | Article in Book | | 1989 |
| Compulsory school attendance legislation in Ireland, 1892-2000 | Lyons, Tony | Article in Book | | 2012 |
| Conclusion | Evans, BryceKelly, Stephen | Article in Book | | 2014 |
| Conclusion | Williams, T. Desmond | Article in Book | | 1967 |
| Conclusion | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2003 |
| Conclusion : devolution and partition | Wilson, Thomas | Article in Book | | 1955 |
| Conclusion : The president of Ireland : past, present and future | Coakley, John,Rafter, Kevin | Article in Book | | 2014 |
| Confessional to-ing and fro-ing in the eighteenth-century diaspora : Helena Barry's story (1738) | O'Connor, Thomas | Article in Book | | 2015 |
| Confiscation in Irish history | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Monograph or Collective Volume | | 1917 |
| Confiscations of the seventeenth century | | Article in Journal | | 1883 |
| Conflict and change : the Irish of Kildare 1000-1269 | O'Byrne, Emmett | Article in Book | | 2006 |
| Conflict, diaspora and empire : Irish nationalism in Britain, 1912-1922 | Gannon, Darragh | Monograph or Collective Volume | Cambridge University Press | 2022 |
| Connecticut in the Irish-American flaxseed trade, 1750-75 | Truxes, Thomas M. | Article in Journal | | 1977 |
| Connemara after the famine : journal of a survey of the Martin estate, 1853 | Scott, Thomas Colville | Monograph or Collective Volume | Lilliput | 1995 |
| Connemara after the famine : Thomas Colville Scott's journal of the survey of the Martin estate | Robinson, Tim | Article in Journal | | 1996 |
| Conquestus and adquisicio : some early Cork charters relating to St Thomas' Abbey, Dublin | Flanagan, Marie Therese | Article in Book | | 2015 |
| Conradh na Gaeilge agus an litríocht | Ó Cadháin Máirtín | Article in Book | | 1972 |
| Conspirators : a photographic history of Ireland's revolutionary underground | Kenna, Shane | Monograph or Collective Volume | Mercier Press | 2015 |
| Constitutions and national identity : proceedings of the conference on "The makings of constitutions and the development of national identity" held in honour of Professor George Shepperson at the University of Edinburgh, 3-6 July 1987 | | Monograph or Collective Volume | Quadriga | 1993 |
| Contemporary ballads on Pat Dolan and the Molly Maguires | Barron, Thomas J. | Article in Journal | | 1979 |
| Contemporary Ireland | Kettle, Thomas Michael, 1880-1916Paul-Dubois, Louis | Monograph or Collective Volume | Maunsell | 1908 |
| Contesting Economic and Social Rights in Ireland: Constitution, State and Society, 1848–2016 | Murray, Thomas | Monograph or Collective Volume | Cambridge University Press | 2016 |
| Contesting Ireland : Irish voices against England in the eighteenth century | McLoughlin, Thomas | Monograph or Collective Volume | Four Courts | 1999 |
| Contesting the fields of play : the Gaelic Athletic Association and the battle for popular sport in Ireland, 1890-1906 | McElligott, Richard | Article in Journal | | 2016 |
| Continental analogies with 1798 : revolution or counter-revolution? | Simms, Brendan | Article in Book | | 2003 |
| Continental traces of Carrick-on-Suir and contemporary Irish castles : a preliminary study of date-and-intial stones | Ronnes, Hanneke | Article in Book | | 2007 |
| Continuity and change : settlement and society in medieval Ireland, c.500-1500 | Simms, Anngret | Article in Book | | 1986 |
| Continuity and change : the material setting of public worship in the sixteenth-century Pales | Moss, Rachel | Article in Book | | 2011 |
| Continuity and change in Ireland, 1945-70 | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1979 |
| Continuity and change in rural county Wexford in the nineteenth century | Jones Hughes, Thomas | Article in Book | | 1987 |
| Continuity and change in rural County Wexford in the nineteenth century | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Book | | 1987 |
| Contrasting communities : a comparative approach to Irish communities in baroque Europe | Gillespie, Raymond | Article in Book | | 2010 |
| Contrasting similarities : Bishops Troy and Lisovskii in Ireland and Belorussia in the age of the French Revolution | Flynn, James T. | Article in Journal | | 2001 |
| Convergence | Reid, Graham | Article in Book | | 2015 |
| Conversion and family identity in eighteenth-century Europe : the Dillons of Costello-Gallen | Ó Conaill, Colm James | Article in Book | | 2005 |
| Conversion narratives in eighteenth-century Ireland | Brown, Michael | Article in Book | | 2005 |
| Conversion to Christianity | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2003 |
| Conversion, family and mentality | Fleming, David A. | Article in Book | | 2005 |
| Conversion, the Bible and the Irish language : the correspondence of Lady Ranelagh and Bishop Dopping | Fitzsimon, Betsey Taylor | Article in Book | | 2005 |
| Conversions among the legal profession in Ireland in the eighteenth century | Power, Thomas P. | Article in Book | | 1990 |
| Converts | Power, Thomas P. | Article in Book | | 1990 |
| Converts and conversion in Ireland, 1650-1850 | | Monograph or Collective Volume | Four Courts | 2005 |
| Cooley, Gandon and the Four Courts | Curran, P. | Article in Book | | 1996 |
| Coote and Lally - two Irish personalities at war | O'Donovan, T. | Article in Journal | | 1966 |
| Corca Dhuine in 1916 and the first Kerry President of the Irish Republic | O'Toole, Joe | Article in Journal | | 2007 |
| Cork Courthouse : The Pains, the Deanes, the stonecutters; incl. Archaeological excavations at Cork City Courthouse 2003 by Maurice F. Hurley | Holohan, Patrick | Article in Journal | | 2006 |
| 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's 'Golden age' : great houses and art collecting in the early nineteenth century | Murray, Peter | Article in Book | | 2005 |
| Corporeal reform and responsibility. The prison medical service and the treatment of Thomas Ashe | Breathnach, Ciara | Article in Journal | | 2017 |
| Correspondence between Bishop O'Dwyer and Bishop Foley on the Dublin Rising, 1916-17 | O'Callaghan, Edward P. | Article in Journal | | 1978 |
| Correspondence of the lexicographer Thomas Connelly OP (1783-93) in the Archivio General de Simancas | Bergman, Ted | Article in Journal | | 2010 |
| Cottiers on an 18th century Tipperary estate | Ryan, Paddy | Article in Journal | | 2014 |
| Council book of the corporation of Drogheda vol 1, 1649-1734 | Gogarty, Thomas | Monograph or Collective Volume | County Louth Archaeological and Historical Society | 1988 |
| Counterfeiters, Lollards, and Lancastrian unease | Strohm, Paul | Article in Book | | 1997 |
| Counting 'cats'. The 1831 census and the Woodstock Estate, County Kilkenny | Gurrin, Brian | Article in Journal | | 2022 |
| Country and town : one hundred years of local government in Ireland | Daly, Mary E. | Monograph or Collective Volume | Institute of Public Administration | 2001 |
| County Carlow 1641-1660 : geography, landownership and society | Nolan, William | Article in Book | | 2008 |
| County Tipperary and national Irish politics, 1916-1997 | Kelly, Alan Thomas | Thesis | | 1997 |
| County Waterford : 1200-1300 | Empey, C. A. (Adrian) | Article in Book | | 1992 |
| Court martial held at the Royal Barracks, Dublin, for the trial of Brevet Lieutenant-Colonel Hon. Thomas Mullins ... Dublin ... 1815 | Anonymous | Article in Journal | | 1927 |
| Court, king and justice in the Ulster Cycle | Clancy, Thomas Owen | Article in Book | | 2005 |
| Craig and the Ulster volunteer force | Stewart, Anthony Terence Quincey, 1929-2010 | Article in Book | | 1967 |
| Creating an audience for contemporary music | O'Leary, Jane | Article in Book | | 1998 |
| Creating an Irish identity: print, culture, and the Irish Franciscans of Louvain | Caball, Marc | Article in Book | | 2018 |
| Creating the template? Teflections on the first decade of Irish diplomacy and the United States | Keown, Gerard | Article in Journal | | 2015 |
| Creators of mathematics : the Irish connection | | Monograph or Collective Volume | University College Dublin Press | 2000 |
| Crede mihi : the most ancient register book of the archbishops of Dublin before the reformation | | Monograph or Collective Volume | | 1897 |
| Crime and policing in 1830s Tallaght | Bagnall, Sean | Article in Journal | | 2011 |
| Crime and the criminal justice system | Rottman, David B. | Article in Book | | 1986 |
| Críth Gablach and the law of status | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1986 |
| Criticism of Henry II's expedition to Ireland in William of Canterbury's miracles of St Thomas Becket | Bull, Marcus | Article in Journal | | 2007 |
| Croke of Cashel : the life of Archbishop Thomas William Croke, 1823-1902 | Tierney, Mark | Monograph or Collective Volume | Gill & Macmillan | 1976 |
| Cromwellian reform and the origins of the Kildare rebellion, 1533-34 | Bradshaw, Brendan | Article in Journal | | 1977 |
| Crown servants, series one : the papers of Thomas Wentworth, 1st earl of Strafford, 1593-1641, from Sheffield city libraries | Merritt, Julia F.Wentworth, Thomas, 1st earl of Strafford, 1593-1641 | Monograph or Collective Volume | Adam Matthew | 1994 |
| Cuairt an Ard-easbaig Cróc ar Thír Chonaill (1891) | Ó Baoighill, Pádraig | Article in Journal | | 2006 |
| Cultural affiliations of early Ireland in the penetentials | Oakley, Thomas Pollock | Article in Journal | | 1933 |
| Cultural and political origins of the Folk-Song Society and the Irish dimension | Knevett, Arthur | Article in Journal | | 2015 |
| Cultural memory : the finding of the Táin and the canonical process in early Irish literature | Davies, Morgan Thomas | Article in Book | | 2014 |
| Culture, contention and identity in seventeenth-century Ireland : Antonius Bruodinus’ Anatomical Examination of Thomas Carve’s Apologetic Handbook | Bruodinus, Antonius, 1625-1680 ; Carve, Thomas 1590-1672 | Monograph or Collective Volume | Cork University Press | 2022 |
| Culture, Malthus, and Irish demographic history | O'Rourke, Kevin H. | Article in Journal | | 1998 |
| Custom and law in the philosophy of Suárez and in the histories of O'Sullivan Beare, Céitinn and Ó Cléirigh | Carroll, Clare | Article in Book | | 2001 |
| Custom in early Irish law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1990 |
| Custom, authority and tolerance in Irish political thought : David Rothe's Analecta Sacra et Mira (1616) | O'Connor, Thomas | Article in Book | | 2009 |
| Custom, authority, and tolerance in Irish political thought : David Rothe's Analecta Sacra et Mira (1616) | O'Connor, Thomas | Article in Journal | | 2000 |
| Customs in early Irish law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1990 |
| D'Arcy McGee : a collection of speeches and addresses, together with a complete report of the centennial celebrations... at Ottawa | McGee, Thomas D'Arcy, 1825-1868Murphy, Charles | Monograph or Collective Volume | Macmillan | 1937 |
| D'Arcy McGee and the Fenians | Burns, Robin B. | Article in Journal | | 1967 |
| D'Arcy McGee, fenianism, and the separate school system in Ontario | Dooley, Ann | Article in Book | | 1988 |
| Dáil Éireann and the army : unity and division (1919-1921) | Nowlan, Kevin B. | Article in Book | | 1968 |
| Daisy Hill's roses. In the early twentieth century a famous county Down nursery played a major part in bringing old roses back into fashion | Nelson, E. Charles | Article in Journal | | 2010 |
| Daniel Mannix, Ireland and Australia | Kiernan, Colm | Article in Book | | 1984 |
| Daniel O'Connell : portrait of a radical | | Monograph or Collective Volume | Appletree Press | 1984 |
| Daniel O'Connell and Alfred Elmore's 'Martyrdom of Thomas à Becket | de Bhailís, Caoimhín | Article in Journal | | 2018 |
| Daniel O’Leary and the sporting experiences of Irish immigrants in the United States | Hunt, Thomas M.Murtha, Ryan | Article in Journal | | 2021 |
| Daniel O’Leary and the sporting experiences of Irish immigrants in the United States | Murtha, Ryan ; Hunt, Thomas M. | Article in Journal | | 2020 |
| Daring young men in their chariots | Nagy, Joseph Falaky | Article in Book | | 1996 |
| Dark liturgy, bloody praxis: the 1916 Rising | Murphy, Séamus, SJ | Article in Journal | | 2016 |
| Darwin, Praeger and the Clare Island surveys | | Monograph or Collective Volume | Royal Irish Academy | 2009 |
| David composing the Psalms on Irish monumental sculpture | Thomas, Colleen M. | Article in Book | | 2017 |
| David Gray, the Aiken mission and Irish neutrality, 1940-41 | Raymond, Raymond James | Article in Journal | | 1985 |
| David Rothe, bishop of Ossory (c.1573-1650): bishop and historian | O'Connor, Thomas | Article in Journal | | 2009 |
| Davis and nationality | Anonymous | Article in Journal | | 1945 |
| Davis and the modern revolution | Gallagher, Frank | Article in Book | | 1945 |
| Davis and the national language | Corkery, Daniel, 1878-1964 | Article in Book | | 1945 |
| Davis's social doctrines | Sheehy, Edward | Article in Book | | 1945 |
| Davis, Mangan, Ferguson? : tradition and the Irish writer | Kinsella, Thomas E. | Monograph or Collective Volume | [s.n.] | 1970 |
| Days of hunger : the Clare volunteers and the Mountjoy hunger strike of 1917 | Mac Conmara, Tomás | Monograph or Collective Volume | Dallán Publishing | 2017 |
| De cómo los irlandeses salvaron la civilización : la historia nunca contada de cómo los irlandeses copiaron y salvaron los manuscritos clásicos | Cahill, Thomas | Monograph or Collective Volume | Editorial debate | 1998 |
| De locis sanctis - Zeichnungen im Pilgerbericht des Adomnan aus dem 7. Jahrhundert | Gnägi, Thomas | Article in Journal | | 2005 |
| De Valera | O'Neill, Thomas PatrickÓ Fiannachta, Pádraig | Monograph or Collective Volume | Cló Morainn | 1968 |
| De Valera in power | Williams, T. Desmond | Article in Book | | 1967 |
| De Valera's constitution and ours | | Monograph or Collective Volume | Gill & Macmillan, Radio Telefís Eireann | 1988 |
| De Valera's constitution and ours | Farrell, Brian | Article in Book | | 1988 |
| Dean Thomas Donaghy | McShane, Michael | Article in Journal | | 2011 |
| Deane and Scott: written in stone, but by whom? | Byrne, John G.Kelly, Mary | Article in Journal | | 2012 |
| Deane's western architectural gems | Murphy, Oliver | Article in Journal | | 2011 |
| Dear harp of my country : the Irish melodies of Thomas Moore | Flannery, James W. | Monograph or Collective Volume | J. S. Sanders | 1997 |
| Dear Mr Darwin | Nelson, E. Charles | Article in Journal | | 2005 |
| Dear old Charleville : the song and the story behind it | O'Riordan, Ted | Article in Journal | | 1986 |
| Death and burial in early medieval Ireland | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| Death in the city : Dublin 1916 | O'Brien, Paul | Article in Journal | | 2015 |
| Decades of dissension and divisions 1923-1959 | Nevin, Donal | Article in Book | | 1994 |
| Decoding the IRA | Gillogly, James J., 1946-Mahon, Tom (Thomas G.) | Monograph or Collective Volume | Mercier Press | 2008 |
| Dedication of memorial tablet in Eglish Presbyterian Church to Dr Thomas Reid of Cadian, townland of Eglish | Knox, Wolsey | Article in Journal | | 2007 |
| Dedication of memorial to TPR Thomas Fennell | Crawford, MartinO'Carroll, Eunan | Article in Journal | | 2014 |
| Deer and the early church in north-eastern Scotland | Clancy, Thomas Owen | Article in Book | | 2008 |
| Deer in medieval Ireland : preliminary evidence from Kilteasheen, Co. Roscommon | Beglane, Fiona | Article in Book | | 2010 |
| Defence, counter-insurgency and rebellion : Ireland, 1793-1803 | Bartlett, Thomas | Article in Book | | 1996 |
| Defining Irish nationalist anti-imperialism : Thomas Davis and John Mitchel | Lynch, Niamh | Article in Journal | | 2007 |
| Definitions of Irishness in the 'Library of Ireland' literary anthologies | MacCarthy, Anne | Monograph or Collective Volume | Peter Lang | 2012 |
| Delia Murphy. Legend of Irish folk music | O'Hara, Aidan | Article in Journal | | 2021 |
| Delivering benefits globally, nationally and locally | Crofts, Roger | Article in Book | | 2001 |
| Denis Florence MacCarthy : national scholar-poet | Leventhal, A. J. | Article in Book | | 1945 |
| Dennis Clark : an appreciation | Kinsella, Thomas E. | Article in Journal | | 1994 |
| Denny Lane and Thomas Davis | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1949 |
| Denunciation of Antonio de Patricio [Anthony Fitzpatrick], O.P., to the Lisbon Inquisition (1699) | O’Connor, Thomas
| Article in Journal | | 2022 |
| Dependency and modernization : perspectives from the Irish nineteenth century | Boylan, Thomas A.McDonough, Terence | Article in Book | | 1998 |
| Deposition, discovery and dispersal: a Viking-age hoard from Castlelohort Demesne | Sheehan, John | Article in Journal | | 2013 |
| Derricke's Image of Irelande and late sixteenth-century Dublin | Lyttleton, James | Article in Book | | 2021 |
| Derricke, Day, and the Dutch, or a tale of woodcuts and woodkerns | Kinsella, Stuart | Article in Book | NA | 2021 |
| Derry - a spectacular maiden | Thomas, Avril | Article in Book | | 1995 |
| Derry ~ Londonderry | Thomas, Avril | Monograph or Collective Volume | Royal Irish Academy | 2005 |
| Descendants of the Reverend Thomas Higginson | Higginson, T. B. | Monograph or Collective Volume | | 1958 |
| Description of the Barnaan Cuilawn, and some conjectures upon the original use thereof : together with an account of the superstitious purposes to which it was latterly applied. Also a description of the remains of an ancient Mill, which were recently discovered near the ruins of Glankeen Church, in the county of Tipperary | Cooke, Thomas Lalor | Article in Journal | | 1825 |
| Descriptive catalogue of materials relating to the history of Great Britain and Ireland to the end of the reign of Henry VII, vol. 1, pt. 1 : Roman period to 750; vol. 1, pt. 2 : 750-1066, with a list of printed materials for British medieval history, including the publications of societies and official bodies and works relating to matters subsequent to 1485; vol. 2 : 1066-1200; vol. 3 : 1200-1327, with facsimiles of the handwriting of Matthew Paris and appendices relating to the early printed editions of Matthew of Westminster and Roger of Wendover. 3 vols. in 4 | Hardy, Thomas Duffus, Sir, 1804-1878 | Monograph or Collective Volume | | 1862 |
| Desperate courage | Rice, Thomas E. | Article in Journal | | 1990 |
| Destellos de gloria : biografía sintética de un prócer de la independencia, incorporando las Reminiscensias del general de división don Tomás Carlos Wright | Wright, A. E. | Monograph or Collective Volume | | 1949 |
| Destitution and politics in 1862 Ireland : evidence from the Skibbereen Poor Law Union | Collins, James K. | Article in Journal | | 2009 |
| Developing the bogs of County Kildare : reports to the Bogs Commissioners, 1809-1814 | Horner, Arnold | Article in Book | | 2006 |
| Developments in the Irish legal system since 1945 | McMahon, Bryan, M. E. | Article in Book | | 1979 |
| Devolution and public finance | Wilson, Thomas | Article in Book | | 1955 |
| Devout humanism Irish-style : the influence of Sir Thomas More on Seathrún Céitinn | Ó Dúshláine, Tadhg | Article in Book | | 2001 |
| Diary of a visit to England in 1775 by an Irishman | Campbell, ThomasRaymond, Samuel | Monograph or Collective Volume | D.N. Welch | 1854 |
| Dictionary of Irish philosophers, A - Z | | Monograph or Collective Volume | Thoemmes Continuum | 2004 |
| Did Strafford change sides? | Zagorin, Perez | Article in Journal | | 1986 |
| Die irische Unabhängigkeitsbewegung, 1916-1922 | Gundelach, Thomas | Monograph or Collective Volume | Lang | 1977 |
| Dillon, Redmond, and the Irish home rulers | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1967 |
| Diocese of Meath : historical sketch | Mills, Thomas | Article in Book | | 1938 |
| Diplomatic preparations for Kinsale | O'Connor, Thomas | Article in Book | | 2002 |
| Directories as genealogical sources for county Kerry | O'Connor, Thomas, of County Kerry | Article in Journal | | 1991 |
| Discoverers & discoveries | O'Neill, Thomas Patrick | Article in Journal | | 1991 |
| Discoverers and discoveries : the Penal Laws and Dublin property | O'Neill, Thomas Patrick | Article in Journal | | 1983 |
| Discovering Kildare's 'hidden' landscapes : archaeological air survey, 1989-2000 | Barrett, Gillian F. | Article in Book | | 2006 |
| Discovering Saint Patrick | O'Loughlin, Thomas | Monograph or Collective Volume | Darton Longman & Todd | 2005 |
| Díseart Tola and its environs | Ó Murchadha, Seán | Article in Book | | 2000 |
| Disputes in the Irish college, Douai (1594–1614) | O'Connor, Thomas | Article in Journal | | 2019 |
| Dissenting spirit : Thomas Weaver, geologist and mining engineer | McArdle, Peadar | Monograph or Collective Volume | Liffey Press | 2018 |
| Dissenting spirit : Thomas Weaver, geologist and mining engineer | McArdle, Peadar | Monograph or Collective Volume | Liffey Press | 2018 |
| Dissolute characters : Irish literary history through Balzac, Sheridan Le Fanu, Yeats and Bowen | McCormack, W. J. | Monograph or Collective Volume | Manchester University Press | 1993 |
| Distance, time and rural communities in Ireland | Thomas, Colin | Article in Book | | 1986 |
| Distant Islands : the topography of holiness in the Nauigatio Sancti Brendani | O'Loughlin, Thomas | Article in Book | | 1999 |
| Ditches at Jigginstown house | Manning, Conleth | Article in Journal | | 1987 |
| Dividing Ireland : World War One and partition | Hennessey, Thomas | Monograph or Collective Volume | Routledge | 1998 |
| Divine right? : the Parnell split in Meath | Lawlor, David | Monograph or Collective Volume | Cork University Press | 2007 |
| Division systems for the gospels : the case of the Stowe St John (Dublin, RIA, D.ii.3), p. 150 | O'Loughlin, Thomas | Article in Journal | | 2007 |
| Divisions in the whig junto in 1709 : some Irish evidence | Hayton, D. W. (David William) | Article in Journal | | 1982 |
| Doctor Barnardo : champion of Victorian children | Levy, Martin | Monograph or Collective Volume | Amberley | 2013 |
| Doctrinal instruction in Irish : the work of Antony Gearnon, O.F.M. | Wall, Thomas | Article in Journal | | 1944 |
| Doctrinal instruction in Irish: the work of Theobald Stapleton | Wall, Thomas | Article in Journal | | 1943 |
| Document on Farney, 1866 | McArdle, Thomas | Article in Journal | | 1975 |
| Documents and Sources. Sex, drink and scandal: the excesses of a parish clerk in 1750s Maynooth | Horner, Arnold | Article in Journal | | 2013 |
| Documents appertaining to Portarlington and Thomas Willis's School, Portarlington c.1769-1824 | | Article in Journal | | 2019 |
| Documents concerning Primate Dowdall | Gogarty, Thomas | Article in Journal | | 1913 |
| Documents concerning primate Dowdall | | Article in Journal | | 1913 |
| Documents concerning the oath of supremacy in early seventeenth-century Ireland | Ní Mhurchadha, Maighréad | Article in Journal | | 2010 |
| Documents relating to Ireland (1795-1804) : official account of secret service money. Governmental correspondence and papers. Notice of French soldiery at Killala. Statements by United Irishmen. Letters on legislative union with Great Britain, etc. | | Monograph or Collective Volume | | 1893 |
| Documents relating to Ireland, 1795-1804 | | Monograph or Collective Volume | Irish University Press | 1970 |
| Doing business in the wartime Caribbean: John Byrn, Irish merchant of Kingston, Jamaica (September - October 1756) | Truxes, Thomas M. | Article in Book | | 2023 |
| Dom Eugene Boylan: Trappist monk, scientist and writer | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2019 |
| Don Philip O'Sullivan Beare, historian | O'Donnell, Thomas J. | Article in Journal | | 1943 |
| Donal Cregan : educationalist | Kellaghan, Thomas | Article in Book | | 1996 |
| Douglas Hyde | Dillon, Myles | Article in Book | | 1960 |
| Down at the docks | Thomas, Liz | Article in Journal | | 2014 |
| Downes family remembrance | Mullen, Denis | Article in Journal | | 2015 |
| Downland, marsh, and weald : monastic foundation and rural intensification in Anglo-Saxon Kent | Thomas, Gabor | Article in Book | | 2016 |
| Downpatrick | Buchanan, R. H. (Ronald Hull) | Article in Book | | 1994 |
| Dr Corry's National Diorama of Ireland and Irish Performance in nineteenth-century Urban Popular culture | Kirkland, Richard | Article in Journal | | 2015 |
| Dr J.C. McQuaid and Eamon de Valera : insights on church and state | O'Neill, Thomas Patrick | Article in Journal | | 1992 |
| Dr Richard Thomas Tracy | Forster, Frank M. C. | Article in Journal | | 1988 |
| Dr Thomas Arthur | Hannan, Kevin | Article in Journal | | 1982 |
| Dr Thomas Arthur, 1593-1674 | Malone, M. | Article in Book | | 1951 |
| Dr Thomas Gallogly: Clogheen's celebrated Famine Doctor | Cashman, Richard | Article in Journal | | 2023 |
| Dr Thomas Kane's continental tour, July - September 1837 | Tierney, Mark | Article in Journal | | 1969 |
| Dr Thomas O'Reilly : saviour of St Louis | Golden, Mary | Article in Book | | 1987 |
| Dr Thomas Reid (1791-1925) - his origins in Eglish, contemporary accounts and his portrait | Gilmore, Brian | Article in Journal | | 2012 |
| Dr Thomas Reid (1791-1925) -reprint from 1913 | Latimer, William Thomas | Article in Journal | | 2012 |
| Dr Thomas Reid, a convict ship's surgeon, visits Lifford Gaol in 1822 | Anonymous | Article in Journal | | 1993 |
| Dr Toddy Pierse and Mount George, Wexford | Pierse, Tom | Article in Journal | | 2012 |
| Dr. Campbell's diary of a visit to England in 1775. With an introduction by C. S. Roberts | | Monograph or Collective Volume | | 1947 |
| Dr. Emmet's rejoinder | Emmet, Thomas Addis | Article in Journal | | 1911 |
| Dr. Plunkett, bishop of Meath, 1779-1827 | Flood, J. M. | Article in Journal | | 1949 |
| Dr. Stevens hospital | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1941 |
| Dr. Thomas Addis Emmet buried in Glasnevin cemetery in Dublin | Hassett, William | Article in Journal | | 1922 |
| Dr. Thomas Croke, archbishop of Cashel and Emly | Mehigan, P. D. | Article in Book | | 1942 |
| Dr. Thomas Hussey | Power, P. | Article in Journal | | 1935 |
| Dr. Thomas Rundle [bishop of Derry] friend of Pope and Swift | Courtney, William Prideaux | Article in Book | | 1910 |
| Drama, Ireland and the question of civility | Healy, Thomas | Article in Book | | 2003 |
| Dressing the dead | Nicholl, John | Article in Journal | | 2020 |
| Drogheda, 1574 | Thomas, Avril | Article in Journal | | 1976 |
| Dromana, County Waterford. Described by Thomas Carlyle as 'a huge grey pile'. Dromana today resembles its modest 17th-century form. ...the history of this house and the prominence of its formidable female line | O'Byrne, Robert | Article in Journal | | 2015 |
| Drumgor men of war | Mowbray, Douglas | Article in Journal | | 2015 |
| Dublin | Kennedy, Thomas P. | Monograph or Collective Volume | Gifford & Craven | 1972 |
| Dublin and the Pale in the Renaissance, c.1540-1660 | | Monograph or Collective Volume | Four Courts | 2011 |
| Dublin and the word in Blessed John Henry Newman (1801-90) | Norris, Thomas J. | Article in Book | | 2013 |
| Dublin castle and the Royal Irish Constabulary (1916-1922) | Hawkins, Richard | Article in Book | | 1968 |
| Dublin documentary | Kinsella, Thomas E. | Monograph or Collective Volume | O'Brien Press | 2006 |
| Dublin in 1798 : the key to the planned insurrection | Graham, Thomas | Article in Book | | 1996 |
| Dublin life | Daly, Mary E. | Article in Book | | 1980 |
| Dublin opticians and instrument makers | Mason, Thomas H. | Article in Journal | | 1944 |
| Dublin to Boston, 1719 | Hunter, R. J. (Robert J.) | Article in Journal | | 1971 |
| Dublin's role in the 1798 rebellion | Graham, Tommy | Article in Book | | 1998 |
| Dubliners 1200-1500 | Moylan, Thomas King | Article in Journal | | 1953 |
| Duckart's canal | McIlvenna, Thomas | Article in Journal | | 2002 |
| Dún Cermna | Rahilly, Thomas F. | Article in Journal | | 1939 |
| Dun's library in the Royal College of Physicians of Ireland | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1938 |
| Dunbrody through the ages | Walsh, Thomas P. | Article in Journal | | 1976 |
| Duncannon : reformer and reconciler, 1781-1847 | Howell-Thomas, Dorothy | Monograph or Collective Volume | Michael Russell | 1992 |
| Dundalk : a succinct detail of some proceedings at Dundalk (1781) | Anonymous | Article in Journal | | 1956 |
| Dungan heraldry: a monograph | Dungan, Thomas P. | Monograph or Collective Volume | The author | 2014 |
| Dungarvan | Proudfoot, Lindsay J. | Article in Book | | 1994 |
| Dungiven Bawn Re-edified | Blades, B. S.Brannon, N. F. (Nick) | Article in Journal | | 1981 |
| Dunshaughlin through the years | Donohoe, JohnEnglishby, Thomas | Monograph or Collective Volume | Costello | 1996 |
| Dutch engravings of the Williamite war, 1689 | O'Neill, Thomas Patrick | Article in Journal | | 1961 |
| Dutch-Irish cooperation in the mid-eighteenth-century wartime Atlantic | Truxes, Thomas M. | Article in Journal | | 2012 |
| Dying to the old, rising to the new : an Icelandic saga with an Irish twist | O'Connor, Thomas | Article in Book | | 2016 |
| D’Arcy Mac Aoidh 1825 – 1868 Éire Óg, Na Fíníní, Impireacht na Breataine | Ó Baoill, Brian | Monograph or Collective Volume | Coiscéim | 2018 |
| Eamon de Valera | O'Neill, Thomas PatrickPakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Monograph or Collective Volume | Hutchinson | 1970 |
| Éamonn Ceannt - his life and times|Éamonn Ceannt - scéal a shaoil | Gallagher, Mary | Article in Book | | 2016 |
| Early Catholic journalism in Canada | Cronin, P. F. | Article in Journal | | 1935 |
| Early Christian Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Monograph or Collective Volume | Cambridge University Press | 2000 |
| Early Christian settlement in North-West Ulster | Kerr, Thomas R. (Thomas Robert), 1972- | Monograph or Collective Volume | Archaeopress | 2007 |
| Early Christian sites in the barony of Corkaguiney | Fanning, Thomas | Article in Book | | 1981 |
| Early eighteenth century voyages from Drogheda to distant lands | Ahern, Fiona | Article in Journal | | 2016 |
| Early English colonial experience in Ireland : Captain Thomas Lee and Sir John Davies | Myers, James P., jr. | Article in Journal | | 1988 |
| Early English colonial experiences in Ireland : Captain Thomas Lee and Sir John Davies | Meyers, J. P. | Article in Journal | | 1988 |
| Early investigations at Knowth | Cleary, Kerry | Article in Book | | 2022 |
| Early Irish and Welsh kinship | Charles-Edwards, T. M. (Thomas Mowbray) | Monograph or Collective Volume | Oxford University Press | 1993 |
| Early Irish brewing laws | McGanley, Thomas | Article in Journal | | 1993 |
| Early Irish Jesuit educators | Corcoran, Timothy Joseph, 1872-1943 | Article in Journal | | 1940 |
| Early Irish law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2005 |
| Early Irish poetry | | Monograph or Collective Volume | Mercier Press | 1965 |
| Early Irish Saints, cults and their constituencies | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2004 |
| Early Italian maps of Ireland from 1300 to 1600, with notes on foreign settlers and trade | Westropp, Thomas Johnston | Article in Journal | | 1912 |
| Early lyric poetry | Dillon, Myles | Article in Book | | 1965 |
| Early medieval agriculture, livestock and cereal production in Ireland, AD 400–1100 | Kerr, Thomas R.McClatchie, MerielMcCormick, FinbarO'Sullivan, Aidan | Monograph or Collective Volume | Archaeopress | 2014 |
| Early medieval crafts and production in Ireland, AD 400–1100: the evidence from rural settlements | Doyle, MaureenKerr, Thomas R.McCormick, FinbarO'Sullivan, AidanSeaver, Matthew | Monograph or Collective Volume | Archaeopress | 2015 |
| Early medieval crafts and technology | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| Early medieval dwellings and settlements | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| Early Medieval Ireland, AD 400-1100 : the Evidence from Archaeological Excavations | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Monograph or Collective Volume | Royal Irish Academy | 2021 |
| Early medieval kingships in the British Isles | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1989 |
| Early medieval Munster : thoughts upon its primary Christian phase | Thomas, Charles | Article in Book | | 1998 |
| Early medieval trade and exchange | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| Early modern catholic self-fashioning : Tadhg Ó Cianáin, the Ulster earls and Santa Francesca Romana (1608) | Mac Craith, Mícheál | Article in Book | | 2010 |
| Early modern Ireland and the New English epic : connecting Edmund Spenser and Sir George Carew | Herron, Thomas, 1968- | Article in Journal | | 2006 |
| Early modern Ireland as a multiconfessional state | Gillespie, Raymond | Article in Book | | 2011 |
| Early settlement and society before 500 A.D. | Mitchell, Frank | Article in Book | | 1986 |
| Early Sinn Féin - the anti-corruption party | Wallace, Ciarán | Article in Journal | | 2013 |
| Early Stuart Irish warrants, 1623 - 1639 : The Falkland and Wentworth administrations | | Monograph or Collective Volume | Irish Manuscripts Commission | 2015 |
| East Leinster in the mid-nineteenth century | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1958 |
| Easter Rising commemorations in the early Irish State | Martin, Allison | Article in Journal | | 2016 |
| Easter Week, 1916 | O'Donoghue, Florence | Article in Book | | 1964 |
| Echlin Buildings, Echlin Street, Dublin 8 | Wallace, Ciarán
| Article in Journal | | 2016 |
| Echoes From a Civil War: The Killing of Guard Thomas Dowling. The Tullycrine Box Bomb 1929 | Queally, Joe | Monograph or Collective Volume | Joe Queally | 21 |
| Echoes of war | Jeffery, Keith | Article in Book | | 2008 |
| Echtra Fergusa Maic Léti | Binchy, D. A. (Daniel Anthony), 1900-1989 | Article in Book | | 1959 |
| Economic development, 1958-85 | Whitaker, T. K. | Article in Book | | 1986 |
| Economic growth and development, 1945-70 | Walsh, Brendan M. | Article in Book | | 1979 |
| Economic growth in Scotland and Ireland | Cullen, L. M. (Louis Michael)Smout, Thomas Christopher | Article in Book | | 1977 |
| Economic policy | Cuthbert, N. B.Isles, K. S. | Article in Book | | 1955 |
| Edgeworth | Baccini, Alberto | Article in Book | | 2009 |
| Edith Somerville in Thomastown | Murphy, William | Article in Journal | | 2006 |
| Edmund Burke and the book reviews in Dodsley's 'Annual Register' | Copeland, Thomas | Article in Journal | | 1942 |
| Edmund Campion's 'Histories of Ireland' and reform in Tudor Ireland | Lennon, Colm | Article in Book | | 2007 |
| Edmund Campion's Histories of Ireland and reform in Tudor Ireland | Lennon, Colm | Article in Book | | 1996 |
| Edmund Spenser's 'Cleopolis' and Dublin | Herron, Thomas, 1968- | Article in Book | | 2009 |
| Educating for Ireland? The urban Protestant elite and the early years of Cork Grammar School, 1880-1914 | d'Alton, Ian | Article in Journal | | 2011 |
| Education and language | Ó Cuív, Brian | Article in Book | | 1968 |
| Education in the new Ireland | Ó Catháin, Seán | Article in Book | | 1967 |
| Education reform : or the necessity of a national system of education, 1 | Wyse, Thomas, Sir, 1791-1862 | Monograph or Collective Volume | Longman, Rees, Orme, Brown, Green, & Longman | 1836 |
| Educational innovation in the Kerry gaeltacht : 1904-22 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1986 |
| Educational innovation in the Mayo Gaeltacht 1904-1922 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1987 |
| Edward Carson | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Book | | 1960 |
| Edward Dodwell and the 'Rediscovery of Greece' | Loughlin, Thomas | Article in Journal | | 2016 |
| Edward J. Byrne 1872-1941 : the forgotten archbishop of Dublin | Morrissey, Thomas J. | Monograph or Collective Volume | Columba Press | 2010 |
| Edward Martyn : an Irish Catholic eccentric | MacGreevy, Thomas | Article in Journal | | 1943 |
| Edward O'Toole, 1860-1943 : Rathvilly schoolteacher and nationalist | McGregor, Eileen | Article in Book | | 2008 |
| Edward Thomas O'Dwyer | Rushe, John | Article in Journal | | 1981 |
| Egyptian Hermits and Irish High Crosses | Cutrer, MaradithThomas, Colleen M. | Article in Journal | | 2024 |
| Eighteenth-century Ireland: Moore, Thomas; Percy, Thomas; Bunting, Edward | Queen's University Library | Monograph or Collective Volume | Queen's University, Belfast | 2007 |
| Eighteenth-Century Scotland and the Three Unions | Kidd, Colin | Article in Journal | | 2005 |
| Éire agus an Fhrainc sna 1790í | Bartlett, Thomas | Article in Book | | 1998 |
| Éire modernizes teacher education | Sheehan, Thomas W. | Article in Journal | | 1946 |
| Electoral politics in Waterford city, 1692-1832 | Power, Thomas P. | Article in Book | | 1992 |
| Eleventh century style in decorated wood from Dublin | Lang, James Thomason | Article in Book | | 1987 |
| Elf-shot cattle | Davidson, Thomas | Article in Journal | | 1956 |
| Eliot and "Race" : Jews, Irish, and Blacks | Cheyette, Bryan | Article in Book | | 2009 |
| Elizabeth Shane, the forgotten poetess | Ó Cuireáin, Thomás | Article in Journal | | 1990 |
| Elizabeth Thomasina Meade novelist 1844-1914 | Buckley, Veronica | Article in Journal | | 2014 |
| Elizabeth, Lady Thurles her ancestory and her role in the rebellion of 1641 | Condon, James | Article in Book | | 1989 |
| Ellen Hutchins (1785-1815), Ireland's first female botanist: her connections with Cork city and its botanists | Hutchins, Madeline | Article in Journal | | 2019 |
| Embedding the Family in the Irish Constitution | Mohr, Thomas | Article in Book | | 2017 |
| Emigrant and emigré : George Thomas Plunkett, bishop of Aillfinne (1814-1827) | McGreevey, John Joseph | Monograph or Collective Volume | The author | 1992 |
| Emigrants to Australia and the US from the parish of Kilchreest, with some from the parishes of Killigolen, Killinane, Killora, Kilthomas and Issertkelly, 1850-1859 | Anonymous | Article in Journal | | 1995 |
| Emigration and exile | Curtin, ChrisO'Dwyer, RianaÓ Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1988 |
| Empires at odds : the Qianlong Emperor and Earl Macartney's British mission | McCausland, Shane | Article in Book | | 2009 |
| Employment, unemployment and emigration | Sexton, J. J. | Article in Book | | 1986 |
| Ending war in a 'sportsmanlike manner' : the milestone of revolution 1919-1923 | Dolan, Anne | Article in Book | | 2011 |
| Endurance and emergence : Catholics in Ireland in the eighteenth century | | Monograph or Collective Volume | Irish Academic Press | 1990 |
| Energy rich, energy poor : Scotland, Ireland and Iceland, 1600-1800 | Smout, Thomas Christopher | Article in Book | | 2003 |
| England's wealth, Ireland's poverty | Lough, Thomas | Monograph or Collective Volume | | 1896 |
| England, Ireland, Scotland, and Wales : documents, 1541-1562 | Lukács, LászlóMcCoog, Thomas M. | Monograph or Collective Volume | Institutum Historicum Societatis Iesu | 2000 |
| English lords in late thirteenth and early fourteenth-century Ireland : Roger Bigod and the de Clare lords of Thomond | Hartland, Beth | Article in Journal | | 2007 |
| 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 treason trials | Du Cann, C. G. L. | Monograph or Collective Volume | NA | 1964 |
| Enigmas of the Great War : Thomas Kettle and Francis Ledwidge | Phillips, Terry | Article in Journal | | 2008 |
| Enigmas of the Great War: Thomas Kettle and Francis Ledwidge | Phillips, Terry | Article in Journal | | 2008 |
| Ennis abbey and the O'Brien tombs | Westropp, Thomas Johnston | Article in Journal | | 1895 |
| Enniscorthy | Whelan, Kevin | Article in Book | | 1994 |
| Ennistymon | Mac Curtain, Margaret | Article in Book | | 1994 |
| Entre Castigo y asimilación : los irlandeses y la Inquisición espanola (1580-1750) | O'Connor, Thomas | Article in Book | | 2014 |
| Envisaging the unthinkable: planning for Armageddon in 1950s Ireland | Kennedy, Michael (Michael J.) | Article in Journal | | 2017 |
| Eoin MacNeill | Charles-Edwards, T. M. (Thomas Mowbray)Maume, Patrick | Article in Book | Royal Irish Academy | 2015 |
| Eoin MacNeill and the Irish Volunteers | Williams, T. Desmond | Article in Book | | 1967 |
| 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 |
| Erin's 'revolting daughters' and Britannia : the fiction of diasporic Irish women in Britain, 1890-1916 | Standlee, Whitney | Thesis | | |
| Érlam : the patron-saint of an Irish church | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2002 |
| Ernest Reginald McClintock Dix (1857-1936), Irish bibliographer | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Monograph or Collective Volume | University P. | 1938 |
| Ernest Thomas Sinton Walton (1903-1995), Duaiseoir Nobel sa bhFisic | Ní Dhonnabháin, ClíonaÓ Donnabháin, Nollaig | Article in Journal | | 2018 |
| Ernest Thomas Sinton Walton : the Irish scientist (1903-1995) | McBrierty, Vincent J. | Monograph or Collective Volume | Trinity College Dublin Press; TCD Dept. of Physics | 2003 |
| Ernest Walton, 1903 - : atomic scientist | Cathcart, Brian | Article in Book | | 1992 |
| Ernest Walton: Nobel laureate and committed Irish scientist | McBrierty, Vincent | Article in Journal | | 2012 |
| ESB: Advertising a brighter future | McParland, Deirdre | Article in Journal | | 2017 |
| Essay on Irish coins, and of the currency of foreign moneys in Ireland. With Mr T[homas] Snelling's supplement | Simon, JamesSnelling, Thomas | Monograph or Collective Volume | | 1810 |
| Essays on the population of Ireland, by a member of the late Irish parliament | [Newenham, Thomas] | Monograph or Collective Volume | | 1803 |
| Establishing a communications system : news, post and transport | Cullen, L. M. (Louis Michael) | Article in Book | | 1984 |
| Ethnicity and the work force : essays | | Monograph or Collective Volume | University of Wisconsin Press | 1985 |
| Étudiants et professeurs irlandais dans les universités de Toulouse et de Cahors (XVIIe-XVIIIe siécles) : les limites de la mission irlandaise | Ferté, Patrick | Article in Book | | 2006 |
| Evidence law and the evidentiary objection : a view from the British Trials collection | Gallanis, Thomas P. | Article in Book | | 2003 |
| Examining Ireland’s post-famine economic performance : the distribution of gross domestic product between the countries of the United Kingdom, 1861-1911 | Geary, FrankStark, Thomas | Monograph or Collective Volume | Economic and Social Research Institute | 1996 |
| Excavation of the remains of an early thirteenth-century house at the Thomas Moore tavern, Cornmarket, Wexford | McLoughlin, CatherineStafford, Emmet | Article in Book | | 2016 |
| Excavations at 58-59 Thomas Street / Vicar Street and 63-64 Thomas Street, Dublin 8 | Carroll, Judith | Article in Book | | 2012 |
| Excavations at Clontuskert priory, Co. Galway | Fanning, Thomas | Article in Journal | | 1976 |
| Excavations at Kells priory, County Kilkenny | Fanning, Thomas | Article in Journal | | 1973 |
| Excursions from Bandon by a plain Englishman (i.e. Thomas Sheahan) 1825 | Sheahan, Thomas | Article in Journal | | 2008 |
| Executed | anonymous | Article in Journal | | 2006 |
| Exegesis and the Book of Kells : the Lucan genealogy | O'Reilly, Jennifer | Article in Book | | 1995 |
| Exercise of authority : surveyor Thomas Owen and the paving, cleansing and lighting of Georgian Dublin | Ó Cionnaith, Finnian | Monograph or Collective Volume | Dublin City Council | 2015 |
| Exile and civil war : the life of the young Irelander, John Kavanagh (1826-1862) Part II | Culleton, Edward | Article in Book | | 1998 |
| Exile Movement: Male Institutions, 1568-1640 | O'Connor, Thomas | Article in Book | | 2023 |
| Exile, astrology and the Spanish Inquisition | O'Connor, Thomas | Article in Book | | 2013 |
| Exiles and saints in baroque Europe : George Conn and the Scotic debate | Harris, Jason | Article in Book | | 2010 |
| Explaining the Altnaveigh massacre | Lynch, Robert | Article in Journal | | 2010 |
| Export led growth, multinational corporations and economic development | Barry, Frank | Article in Book | | 2009 |
| Extract from an address ... on the occasion of the bicentenary of St Carmens Church of Ireland (1789-1989) | MacNamara, Thomas | Article in Journal | | 1990 |
| Extracts from the Crimean journal of Thomas Butler | Butler, Thomas | Article in Journal | | 1987 |
| Extracts from the journal of Thomas Dineley | | Article in Journal | | 1867 |
| Extracts from the journal of Thomas Dineley | | Article in Journal | | 1913 |
| Extracts from the journal of Thomas Dineley | Dineley, ThomasShirley, E. P. | Article in Journal | | 1867 |
| Extracts from the journal of Thomas Dinely (1681) | | Article in Journal | | 1867 |
| Extracts from the journal of Thomas Dinely (1681) | | Article in Journal | | 1913 |
| Eyre Lloyd's Boer War diary | Brown, Tony | Article in Journal | | 2001 |
| Facsimiles of national manuscripts of Ireland.4 pts. in 5 vols. | | Monograph or Collective Volume | Public Record Office of Ireland | 1874 |
| Facsimiles of the national manuscripts of Ireland. 4 vols. | | Monograph or Collective Volume | | 1874 |
| Failed founding fathers and abandoned sources: Edward Williams, Thomas Stephens and the young J.E. Lloyd | Löffler, Marion | Article in Book | | 2013 |
| Fairy faith and changelings : the burning of Bridget Cleary in 1895 | McGrath, Thomas | Article in Journal | | 1982 |
| Fairy faith and changelings : The burning of Bridget Cleary in 1895 | McGrath, Thomas | Article in Journal | | 1982 |
| Fall of princes : Lydgate, Sir Henry Sidney and Tudor conquest in The Book of Homth | McGowan-Doyle, Valerie | Article in Book | | 2007 |
| Family formation in a colonial city : Londonderry 1650-1750 | Thomas, C. | Article in Journal | | 2000 |
| Family, community and religion | Collins, BrendaThomas, TerryTiller, Kate | Article in Book | | 1994 |
| Famine and the failures of parliament | Nowlan, Kevin B. | Article in Book | | 1973 |
| Famine in art : imagery, influences and exhibition in mid-20th-century Ireland. Lilian Lucy Davidson and Muriel Brandt in the Centenary Commemoration of Thomas Davis and Young Ireland, 1946 | Kelly, Niamh Ann | Article in Book | Quinnipiac University Press; Cork University Press | 2020 |
| Famine memories | Gielty,Thomas | Article in Journal | | 1996 |
| Famine mortality in south Kilkenny : a parochial microcosm | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 1995 |
| Famine, fever and the bloody flux | Geary, Laurence M. | Article in Book | | 1995 |
| Famine, illegitimacy, and the workhouse in western Ireland : Kilrush county Clare | Gray, PaulKennedy, Liam, 1946- | Article in Book | | 2005 |
| Famine, illegitimacy, and the workhouse in western Ireland : Kilrush, County Clare | Gary, PaulKennedy, Liam, 1946- | Article in Book | | 2005 |
| Famous Irish prisoners : 10, some confusion about Tom Clarke | Piondar, Sean | Article in Journal | | 1945 |
| Famous Irish prisoners : 9, Tom Clarke's sufferings and death | Piondar, Sean | Article in Journal | | 1945 |
| Farming in early medieval Ireland | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| Farney in 1634 : an examination of John Raven's survey of the Essex estate | Duffy, Patrick J. | Article in Journal | | 1983 |
| Father Finaghty, Valintine Greatrakes and attitudes to the miraculous in seventeenth-century Ireland and England | Parker, Ciarán Thomas | Thesis | | 1997 |
| Father Francis Patrick Duffy : 'A very Irish, very Catholic, very American person' | Shelley, Thomas J. | Article in Journal | | 2004 |
| Father Mathew's family : the Mathews in Tipperary | Mathew, David | Article in Journal | | 1957 |
| Father Nicholas Sheehy (c.1728-1766) | Power, Thomas P. | Article in Book | | 1998 |
| Father Nicholas Sheehy, P.P., Clogheen | Murphy, Thomas A. | Article in Book | | 1993 |
| Father Nicholas Sheehy, P.P., Clogheen | Murphy, Thomas A. | Article in Book | | 1950 |
| Father Paul O'Sullivan OP, EDM (1871-1958) | Casey, Thomas | Article in Book | | 2015 |
| Father Ted comes to Portlaw: letters of the Rev. Edwyn Thomas 1914-1915 | Walton, Julian C. | Article in Journal | | 2008 |
| Father Thomas A. Finlay, S. J., 1848-1940 | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Thomas Burbage | White Mulligan, Margaret | Article in Journal | | 2020 |
| Father Thomas Hore and the 1850 migration as readers at home read about it in the columns of the 'Wexford Guardian' | Anonymous | Article in Journal | | 1998 |
| 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 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 |
| Feed my lambs: The Reverend Thomas Drew and Protestant children in Early Victorian Belfast | Farrell, Seán | Article in Journal | | 2015 |
| Feeding England during the industrial revolution : a view from the Celtic fringe | Thomas, Brinley | Article in Journal | | 1982 |
| Feeding England during the industrial revolution: a view from the Celtic fringe | Brinley, Thomas | Article in Journal | | 1982 |
| Féiniúlacht agus náisiúnachas in Éireann san ochtú haois déag | Bartlett, Thomas | Article in Book | | 1996 |
| Fenianism as a global phenomenon : Thomas O'Malley Baines, papal soldier and Fenian convict | Maume, Patrick | Article in Book | | 2006 |
| Fenianism, 1867-1916 | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1968 |
| Fenians in the foothills: Patrick Doran and the Rising of 1867 | Whelan, Fergus | Article in Journal | | 2017 |
| Fenians, spies and army mutiny: the unravelling of the Tipperary IRB in 1865-66 | O'Keeffe, Mark | Article in Journal | | 2017 |
| Fergus O'Connor and J. Bronterre O'Brien | Briggs, Asa | Article in Book | | 1966 |
| Fermanagh : its native chiefs and clans, annals, relics shrines, learned ecclesiastics and scholars, fourteen martyrs to Irish nationhood | Maguire, Thomas | Monograph or Collective Volume | S. D. Montgomery | 1954 |
| Fewer ladies, more women | Clear, Caitríona | Article in Book | | 2008 |
| Fianna Fáil and the civil service, 1927-37 | Feeney, Thomas M. | Thesis | | 1999 |
| Fianna Fáil in Kerry: from Anti-Treaty Insurrection to State Power | Fitzgerald, Thomas Earls | Article in Journal | | 2023 |
| Fictions of advice : the literature and politics of counsel in late medieval England | Ferster, Judith | Monograph or Collective Volume | University of Pennsylvania Press | 1996 |
| Field notes | Coffey, Thomas | Article in Journal | | 1994 |
| Fifty years of Irish painting : 1900-1950 | MacGreevy, Thomas | Article in Journal | | 1949 |
| Fighting words : writing the 'Nine Years War' | McCabe, Richard A. | Article in Book | | 2007 |
| Figures of memory : poetry, space, and the past | Armstrong, Charles I., 1969- | Monograph or Collective Volume | Palgrave Macmillan | 2009 |
| Financial accounts of Thomas Wentworth, earl of Strafford, and Sir George Radcliffe, 1639-40; presented by Fiona Pogson | | Article in Journal | | 2017 |
| Financial mismanagement at the Irish College, 1772–98 | Korten, Christopher | Article in Book | | 2018 |
| Financing town walls in medieval Ireland | Thomas, Avril | Article in Book | | 1986 |
| Fingal Rónáin | Greene, David | Article in Book | | 1959 |
| Fintan Lalor and the 1849 movement | O'Neill, Thomas Patrick | Article in Journal | | 1950 |
| Fish and chips and the 1916 Rising | O'Brien, Paul | Article in Journal | | 2012 |
| Fitzpatrick's Boston, 1846-1866 : John Bernard Fitzpatrick, third bishop of Boston | O'Connor, Thomas H. | Monograph or Collective Volume | Northeastern UP | 1984 |
| Five Donegal historians of the last century | McGill, Patrick J. | Article in Journal | | 1974 |
| Fled Bricrenn | O'Brien, M. A. (Michael Alphonsus) | Article in Book | | 1959 |
| Flight from famine | Fitzpatrick, David | Article in Book | | 1995 |
| Florence Wilson and "The Man from God Knows Where" | McLaughlin, John | Article in Journal | | 2001 |
| Florilegium insulae sanctorum seu vitae et acta sanctorum Hiberniae ... | Messingham, Thomas | Monograph or Collective Volume | | 1624 |
| Flowers from ancient gardens : the lemma 'amicitia' in the Manipulus florum of Thomas of Ireland | McEvoy, James | Article in Book | | 2009 |
| Focus on the Fenians : the 'Irish People' trials, November 1865 - January 1866 | Rynne, Frank | Article in Journal | | 2005 |
| Focus on Thomas Street | Brooke-Tyrrell, Alma | Article in Journal | | 1983 |
| Folk memory and the famine | Póirtéir, Cathal | Article in Book | | 1995 |
| Folklore of Clare : a folklore survey of county Clare and county Clare folk-tales and myths | Westropp, Thomas JohnstonÓ Crualaoich, Gearóid | Monograph or Collective Volume | Clasp Press | 2000 |
| Fontenoy and Aughrim - a recent Galway connection | Ó hAnnracháin, Eoghan | Article in Journal | | 2008 |
| Food and famine | Crawford, E. Margaret | Article in Book | | 1995 |
| Food problems during the great Irish famine | O'Neill, Thomas Patrick | Article in Journal | | 1952 |
| Fools and adultery in some early Irish texts | Clancy, Thomas Owen | Article in Journal | | 1993 |
| Forcibly without her consent : abductions in Ireland, 1700-1850 | Power, Thomas P | Monograph or Collective Volume | iUniverse | 2010 |
| Foreign involvement in the revolt of Silken Thomas, 1534-5 | Ó Siochrú, Micheál | Article in Journal | | 1996 |
| Forever England : reflections on race, masculinity and empire | Rutherford, Jonathan | Monograph or Collective Volume | Lawrence and Wishart | 1997 |
| Forfeited properties in Thomastown, Co. Kilkenny in the mid seventeenth century | Manning, Conleth | Article in Journal | | 2008 |
| Forgotten dreams : the life and times of Major J. G. "Ged" O'Dwyer | Toomey, Thomas | Monograph or Collective Volume | O'Brien-Toomey | 1995 |
| Forming Catholic Communities: Irish, Scots and English College networks in Europe, 1568–1918 | | Monograph or Collective Volume | BRILL | 2018 |
| Forth and Bargy in 1852 | Lacy, Thomas | Article in Journal | | 2009 |
| Fortitude and prudence : notes on the Mac Egans of Ormond | Eagan, Thomas F. | Article in Journal | | 2016 |
| Fortunate farewell to the earl of Essex | Churchyard, Thomas, 1523?-1604 | Monograph or Collective Volume | | 1599 |
| Foundation and early years of the Irish TUC 1894-1912 | Keogh, Dermot | Article in Book | | 1994 |
| Four Victorian weddings and a funeral | Comerford, Patrick | Article in Book | | 2019 |
| Fr Daniel Roche, SJ | Morrissey, Thomas J. | Article in Book | | 2014 |
| Fr Finlay, Kevin Kenny and the Mystery Lady Investor | Kenny, Colum | Article in Journal | | 2015 |
| Fr John Delaney, SJ | Morrissey, Thomas J. | Article in Book | | 2014 |
| Fr Patrick Smyth, peacemaker at Eureka | McDonnell, Thomas | Article in Journal | | 1985 |
| 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. Edward Thomas O'Dwyer and the general election of 1874 | O'Callaghan, Edward P. | Article in Journal | | 1979 |
| Fr. Thomas O'Shea and the Callan Tenant Protection Society | Phelan, Margaret M. | Article in Journal | | 1980 |
| Fr. Thomas Shinnick PP Bandon 1778-1814 - Parish Population Survey 1807|Bibliography | O'Flynn, Paddy | Article in Journal | | 2014 |
| France and the 1798 rebellion | Gough, Hugh | Article in Book | | 1998 |
| Francis Bergin & Anne Power - marriage and issue | Burke, Thomas A. | Article in Journal | | 2016 |
| Frank Aiken : family, early life and the revolutionary period, 1898-1921 | Magennis, Eoin | Article in Book | | 2014 |
| Frank Aiken : internationalist | Kelly, Stephen | Article in Book | | 2014 |
| Frank Aiken : nationalist | Evans, Bryce | Article in Book | | 2014 |
| Frank Aiken : nationalist and internationalist | | Monograph or Collective Volume | Irish Academic Press | 2014 |
| Frank Aiken : revoluntionary, statesman, polymath | Evans, Bryce | Article in Journal | | 2013 |
| Frank Aiken and the IRA, 1923-1933 | Hanley, Brian | Article in Book | | 2014 |
| Frank Aiken and the Volunteer Force of the Irish Army, 1934-1939 | Joye, Lar | Article in Book | | 2014 |
| Frank Aiken at the United Nations : some personal recollections | Dorr, Noel | Article in Book | | 2014 |
| Frank Aiken's civil wars, 1922-1923 | Lynch, Robert | Article in Book | | 2014 |
| Frank Aiken's war: the Irish revolution, 1916-23 | Lewis, Matthew | Monograph or Collective Volume | University College Dublin Press | 2014 |
| Fraternising with papists : an Anglican clergyman abroad | Finnegan, Rachel | Article in Book | | 2015 |
| Frederick Thomas Tronton, 1863-1922 | O'Hara, James G. | Article in Book | | 2003 |
| Freemen and voters | O'Neill, Thomas Patrick | Article in Journal | | 1993 |
| 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 |
| Friends' Historical Library, 6 Eustace St., Dublin 2: | Mallagh, Thomas | Article in Journal | | 1983 |
| Friends, Roman bindings and Dr. Troy | McDonnell, Joseph | Article in Journal | | 2003 |
| From "castle" bishop to "moral leader"? Edward O'Dwyer and Irish nationalism, 1914-7 | De Wiel, Jérôme aan | Article in Journal | | 2000 |
| From 'A list of inhabitants of the united parishes of Kinvara, Duras and Killina, as compiled by Rev. Thos. Kelly' A.D. 1834 | | Article in Journal | | 1994 |
| From 'Atlantis' to 'New Ireland'. the origins of 'Studies' | O'Keeffe, Declan | Article in Journal | | 2011 |
| From an abundance of words to their absence : the order of baptism in the Stowe Missal (c. 830) | Whelan, Thomas R. | Article in Book | | 2013 |
| From anti-partitionism to realpolitik? Frank Aiken, partition and Northern Ireland, 1948-1954 | Kelly, Stephen | Article in Book | | 2014 |
| From Baginbun to Brexit - the shadow of Strongbow | Hanley, Brian | Article in Journal | | 2019 |
| From Ballinalee to Botany Bay. Clonbroney's links with Colonial Australia | Brady, Gerry | Article in Journal | | 2006 |
| From Barry, 1897-1980 | Desmond, John | Article in Journal | | 2007 |
| From Carlow, he founded Argentina's first English newspaper | Bergin, L. D. | Article in Journal | | 1998 |
| From Catholic Workers' College to National College of Ireland, 1951-1998 | Morrissey, Thomas J. | Article in Journal | | 1998 |
| From city slums to city sprawl : Dublin from 1800 to the present | Prunty, Jacinta | Article in Book | | 1995 |
| From comfortable farms to mercantile commerce and cultural politics : the social origins and family connections of Thomas Francis Meagher | Mannion, John | Article in Journal | | 2003 |
| From Cork to Kempsey. An Irish contribution to the timing of Australian Federation | Harty, Raymond | Article in Journal | | 2004 |
| From County Down to Anzac Cove : The tragic Great War journeymade by a local soldier in the 10th (Irish) Division | Orr, Philip | Article in Journal | | 2004 |
| From County Kildare to India | Radigan, Thomas B. | Article in Journal | | 1997 |
| From Drogheda to Jerusalem, and a riot : the travels of Thomas Brodigan of Piltown, 1845-1846 | McEvansoneya, Philip | Article in Book | | 2015 |
| From Easter week to Flanders field : the diaries and letters of John Delaney SJ, 1916-1919 | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2015 |
| From Economic Development to St. Andrews : half a century of economic and social policy-making | Fitzgerald, John | Article in Book | | 2009 |
| From famine to near famine, 1845-79 | O'Neill, Thomas Patrick | Article in Journal | | 1961 |
| From first Dáil through Irish Free State | Farrell, Brian | Article in Book | | 1988 |
| From free trade to self-sufficiency | Meenan, James | Article in Book | | 1967 |
| From freedom to tolerance : D'Arcy McKee, the first martyr | Burns, Robin B. | Article in Book | | 1988 |
| From Gaelicised chieftains to Protestant gentry : the FitzGeralds of Glin in the eighteenth century | Byrne, Thomas J. | Article in Book | | 2009 |
| From hedge school to hegemony : intellectuals, ideology, and Ireland in the nineteenth century | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | | 1996 |
| From Ireland to Bohemia : the distant reach of Thomas of Ireland and his De Tribus Punctis | Woods, Penelope | Article in Book | | 2018 |
| From Irish state to British empire : reflections on state-building in Ireland 1690-1830 | Bartlett, Thomas | Article in Journal | | 1995 |
| From Irish Whig rebel to Bourbon diplomat : the life and career of Nathanial Hooke (1664-1738) | Byrne, Thomas | Thesis | | 2006 |
| From Jacobite to Jacobin | Ó Buachalla, Breandán | Article in Book | | 2003 |
| From lower Annagh to Ballingarry : the life of the Young Irelander, John Kavanagh (1826-1862) Part I | Culleton, Edward | Article in Book | | 1998 |
| From megalith to megastore : broadcasting and Irish culture | Gibbons, Luke | Article in Book | | 1988 |
| From Oirialla to Ottawa - the literary legacy of Thomas D'Arcy McGee | Trimble, Gearóid | Article in Journal | | 2019 |
| From orange grove to Armageddon : two significant friendships in the life of Thomas Russell | Orr, Philip | Article in Book | | 2003 |
| From patronage to brokerage in the local politics of eastern Ireland | Wilson, Thomas M. | Article in Journal | | 1990 |
| From Patsy O'Wang to Fu Manchu : Ireland, China and racism | O'Toole, Fintan | Article in Book | | 2009 |
| From political economy to economics and commerce | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | | 1999 |
| From Reformation to Restoration : Ireland 1534-1660 | Canny, Nicholas P. | Monograph or Collective Volume | Helicon | 1987 |
| From republican theory to public policy | Pettit, Philip | Article in Book | | 2005 |
| From revolution to democracy : analysing the 1923 General Election | Callinan, Elaine | Article in Book | | 2023 |
| From Sligo to Wales - the flight of Sir Charles Phibbs | Thomas, S. | Article in Journal | | 2004 |
| From stabilisation to economic growth - the contribution of macroeconomic policy | Boylan, Thomas A. | Article in Book | | 2002 |
| From Swift to Grattan | McCracken, J. L. | Article in Book | | 1973 |
| From the ancient constitution to democracy : transformations in republicanism in the eighteenth century | Livesey, James | Article in Book | | 2003 |
| From the archives : the Ashbourne engagement | Donovan, ChristyLaing, VictorManning, Alan | Article in Journal | | 2006 |
| From the Arctic to Belfast ... the story of plant-hunter Thomas Drummond | Nelson, E. Charles | Article in Journal | | 2000 |
| From the files of the DIB...Buck Whaley : drinking, dissipation and destruction | Geoghegan, Patrick M. | Article in Journal | | 2007 |
| From the Mayo book of survey and distribution | McDonnell, Thomas | Article in Journal | | 1987 |
| From the Nanny to the Nile. A Tuam man's contribution to modern Ireland | Kelly, Tommy | Article in Journal | | 2015 |
| From the shadow of his son : 'Honest Thomas Meagher' - the father of an Irish patriot | Broderick, Eugene | Article in Book | | 2006 |
| From the treaty to the civil war | Williams, Desmond T. | Article in Book | | 1968 |
| From the ‘Flat o' the city' to the top of the hill : Cork since 1700 | Cronin, Maura (née Murphy) | Article in Book | | 1995 |
| From torpedo boat to temples of culture : Carlo Cambi's route to Ireland | McCarthy, Patricia | Article in Journal | | 2001 |
| From United Kingdom to divided island : aspects of the Irish experience, 1850-1922 | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1988 |
| From urbs intacta to crystal city : Waterford 1495-1995 | Walton, Julian | Article in Book | | 1995 |
| From Victorian boyhood to the troubles : a Skibbereen memoir | Kingston, William | Article in Journal | | 2005 |
| From war to civil war in Ireland : Three essays on the treaty debate : The great debate | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1973 |
| From war to civil war in Ireland : Three essays on the treaty debate : The meaning of independence | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1973 |
| From war to civil war in Ireland: Three essays on the treaty debate: Days of decision | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1973 |
| From Waterford to Worcester: Records from a Massachusetts archive | Griffin, Margo | Article in Journal | | 2011 |
| From ‘Dorchester Labourers’ to ‘Tolpuddle Martyrs’: Celebrating Radicalism in the English Countryside | Griffiths, Clare | Article in Book | | 2018 |
| Frontiers in conflict : the old southwest, 1795-1830 | Clarke, ThomasGuice, J. D. W. | Monograph or Collective Volume | University of New Mexico Press | 1989 |
| Frontiers in conflict : the old Southwest, 1795-1830 | Clark, ThomasGuice, J. D. W. | Monograph or Collective Volume | University of New Mexico Press | 1989 |
| Fulachta Fiadha in the Burren | Coffey, Thomas | Article in Book | | 2000 |
| Fundamental rights and the constitution | Kelly, John | Article in Book | | 1988 |
| Gaelic and European interactions on Ireland's harmonic frontiers | Smith, Christopher J. | Article in Book | | 2011 |
| Gaelic classicism in the Irish midland plantations : an archaeological reflections | Lyttleton, James | Article in Book | | 2007 |
| Gaelic culture in crisis : the literary response 1600-1850 | Ó Tuama, Seán | Article in Book | | 1988 |
| Gaelic Ireland rediscovered : courtly and country poetry | Ní Chuilleanáin, Eiléan | Article in Book | | 1973 |
| Gaelic Ireland rediscovered: the early period | Clarke, Austin | Article in Book | | 1973 |
| Gaelic ripples | Ní Dhorchaí, Proinnsias | Article in Book | | 1980 |
| Gaelic warfare in the middle ages | Simms, Katharine | Article in Book | | 1996 |
| Gallery of Irish writers : the Irish writers of the seventeenth century | McGee, Thomas D'Arcy, 1825-1868 | Monograph or Collective Volume | Lemma Publishing Corporation | 1974 |
| Galway in the modern period : survival and revival | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1995 |
| Galway's quincentennial, 1484-1984 | O'Neill, Thomas Patrick | Article in Journal | | 1984 |
| Geary and official statistics | Linehan, Thomas P. | Article in Book | | 1997 |
| Geis, prophecy, omen, and oath | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1999 |
| Gender and the nationalistic ballad: Thomas Davis, Thomas Moore, and their songs | Love, Timothy M. | Article in Journal | | 2017 |
| 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 |
| Genealogy, geography and social mobility : the family background of Thomas Francis Meagher | Mannion, John | Article in Book | | 2006 |
| General Andrew Thomas McReynolds, hero of the Mexican and Civil Wars | Sweeny, William M. | Article in Journal | | 1926 |
| General Edward Hand | Maginnis, Thomas Hobbs | Article in Journal | | 1924 |
| General Hubert's futile campaign | Murtagh, Harman | Article in Book | | 2003 |
| General Humbert takes his leave | Bartlett, Thomas | Article in Journal | | 1991 |
| General Humbert's campaign in the west | Murtagh, Harman | Article in Book | | 1998 |
| General Joe of '98 and Thomas Hugo and Thomas Crofton Croker | O'Shaughnessy, Peter | Article in Journal | | 1990 |
| General John Barry | O'Callaghan, Con | Article in Journal | | 2003 |
| General Thomas Arthur Count Lally | Hayes, Richard Francis | Article in Journal | | 1949 |
| General Thomas Cloney : Wexford rebel of 1798 | Joyce, John | Monograph or Collective Volume | Georgraphy Publications | 1988 |
| General Thomas Francis Meagher | Lonergan, Thomas S. | Article in Journal | | 1913 |
| Genteel revolutionaries : Anna and Thomas Haslam and the Irish women's movement | Quinlan, Carmel | Monograph or Collective Volume | Cork University Press | 2002 |
| Genteel revolutionaries: the lives of Anna and Thomas Haslam | Quinlan, Carmel | Thesis | | 1999 |
| Gentleman & scholar : Thomas James Barron, 1903-1992 | Smyth, Jonathan A. | Monograph or Collective Volume | Cumann Seanchais Bhreifne | 2012 |
| Geographical description of the kingdom of Ireland | Bowles, Thomas | Monograph or Collective Volume | | 1720 |
| George Berkeley and Thomas Prior, lifelong friends | Kehoe, Imelda | Article in Journal | | 2001 |
| George Thomas Plunkett, bishop of Elphin, 1814-1827 | McGreevy, John | Article in Book | | 2006 |
| Gerald FitzGerald, loyal soldier and ambivalent rebel | Byrne, Thomas J. | Article in Book | | 2009 |
| Gerard Manley Hopkins : doomed to succeed by failure | Thomas, A. | Article in Journal | | 1966 |
| Gerard Manley Hopkins and his Irish friends | Morrissey, Thomas J. | Article in Journal | | 2011 |
| Getting to know grandad : a family perspective on Michael Davitt | Davitt, Thomas | Article in Book | | 2009 |
| Getting to know Grandfather through the local newspaper | O'Shea, Mary Rose | Article in Journal | | 2016 |
| Ghosting the trenches, Part I-II | O'Reilly, J. J. | Article in Journal | | 2006 |
| Gilbert and the Public Record Office of Ireland | Ó Dúill, Gréagóir | Article in Book | | 1999 |
| Gilbert and the Royal Irish Academy | O'Rafferty, Siobhán | Article in Book | | 1999 |
| Gilla Mic Liag Mac Ruaidhri, primate of Armagh, 1137-1174 | Gogarty, Thomas | Article in Journal | | 1918 |
| Giolla Brighde Mac Con Midhe | O'Sullivan, Anne | Article in Book | | 1965 |
| Glass by Thomas and Richard Pugh in the National Museum of Ireland | MacLeod, Catriona | Monograph or Collective Volume | The Stationery Office | 1983 |
| Gleanings from Irish history | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Monograph or Collective Volume | | 1925 |
| Glenasmole Roads | Healy, Patrick Thomas, 1916-2000 | Monograph or Collective Volume | South Dublin Libraries | 2006 |
| Glencairn | Burke, Thomas A. | Article in Journal | | 2020 |
| Glencullen, Fraochan berrries and Dan O’Connell | Doyle, Thomas | Article in Journal | | 1996 |
| Glendalough House, Annamoe, Co. Wicklow | Davies, Mary | Article in Journal | | 2016 |
| Glenswilly : a talk on her native glen given in Foxhall, 1969, for the first Glenswilly Festival | Wall, Maureen (née Mac Geehin)Wall, Thomas | Monograph or Collective Volume | Privately printed | 1973 |
| Glimpse of an Irish felon's prison life | Clarke, ThomasO'Hegarty, P. S. | Monograph or Collective Volume | Mansell and Roberts | 1922 |
| Glimpses of eighteenth-century Limerick from contemporary newspapers | Byrne, Thomas J. | Article in Journal | | 2012 |
| Gloom without sunshine : the reception of T. C. Murray in America, 1911-1938 | Degiacomo, Albert J. | Article in Journal | | 1995 |
| 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 |
| God’s Wall of Brass: Cromwell’s Generals in Ireland, 1649–1650 | Bennett, Martyn | Article in Book | | 2021 |
| Going home | Sheehan, Thomas | Article in Journal | | 1999 |
| Going to war | Pennell, Catriona | Article in Book | | 2008 |
| Gone for a soldier : the story of a Dublin boy | Clarke, Howard R. | Article in Journal | | 2015 |
| Good Citizenship | Kilcoyne, Thomas (Tom), fl.1911 | Article in Journal | | 2019 |
| Governance in a globalized political economy : Irish labour market policy, 1987-1999 | Boyle, Nigel | Article in Book | | 2003 |
| Government and Dáil : constitutional myth and political practice | Chubb, Basil | Article in Book | | 1988 |
| Grace O'Malley | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| Graham Stuart Thomas and Ireland's gardens | Nelson, E. Charles | Article in Journal | | 2003 |
| Grand Jury and other records of St Thomas's Parish, Dublin City | Magee, Seán | Article in Journal | | 2019 |
| Grant of lands in Co. Limerick to Thomas Blackall under the Act of Settlement | Anonymous | Article in Journal | | 1941 |
| Grattan's parliament | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1973 |
| Graves family of Thomastown | Hoyne, Liam | Article in Journal | | 1992 |
| Gravestone inscriptions of Co. Cork XX: Kilcolman Burial Ground, Coachford | Henchion, Richard | Article in Journal | | 2017 |
| Griffith’s valuation a genealogical source for county Kerry | O'Connor, Thomas, of County Kerry | Article in Journal | | 1995 |
| Grosse Ile gateway to Canada, 1832-1834 | Radigan, Thomas B. | Article in Journal | | 1996 |
| Growing up in Drogheda in the 1920s and 30s | Flynn, Thomas Joseph (1915-1995) | Article in Journal | | 2014 |
| Großbritannien seit 1945 | Mergel, Thomas | Monograph or Collective Volume | Vandenhoeck & Ruprecht | 2005 |
| Grubbs of Dublin : telescope makers to the world | Elliott, Ian, 1936-2015 | Article in Book | | 2011 |
| Guardian of the Treaty: the Privy Council appeal and Irish sovereignty | Mohr, Thomas | Monograph or Collective Volume | Four Courts Press | 2016 |
| Guerilla days in Ireland | Barry, Thomas Bernardine, 1897-1980 | Monograph or Collective Volume | Anvil | 1981 |
| Guerilla days in Ireland : a first-hand account of the Black and Tan war (1919-1921) | Barry, Thomas Bernardine, 1897-1980 | Monograph or Collective Volume | Devin-Adair | 1956 |
| Guerrilla days in Ireland | Barry, Thomas Bernardine, 1897-1980 | Monograph or Collective Volume | [s.n.] | 1981 |
| Guide to Mountshannon | MacNamara, Thomas | Monograph or Collective Volume | The author | 1980 |
| Gypsy Politics and Traveller identity | | Monograph or Collective Volume | University of Hertfordshire Press | 1997 |
| Hanbury Lane from whence I came : memories of growing up in Dublin's Liberties | Phelan, Thomas | Monograph or Collective Volume | NUI Maynooth | 1998 |
| Handy book of small farm management | Baldwin, Thomas | Monograph or Collective Volume | | 1870 |
| Hannah Falvey of Valencia Island, County Kerry | Merrigan, Thomas W. | Article in Journal | | 2013 |
| Harnessing the tides : the early medieval tide mills at Nendrum Monastery, Strangford Lough | Crothers, NormanMcErlean, Thomas, | Monograph or Collective Volume | The Stationery Office : Environment and Heritage Service | 2007 |
| Harriet Elizabeth Stamer, Duchess of Rovigo (1816-1875) | O'Connell, Gerald | Article in Book | | 2000 |
| Harvest home : a selection from the writings of T.G.F. Paterson relating to county Armagh | Evans, E. Estyn (Emyr Estyn), 1905-1989Paterson, T. G. F. | Monograph or Collective Volume | County Museum | 1975 |
| Hawkshaw of Hillburn and all that : whey, tea and rice at Store Pound in the spring of black '47 | McDonald, Thomas | Article in Journal | | 2003 |
| Headcounting in British Ireland 1650-1911 : colonialism, demography and ethnicity | McEldowney, Owen Thomas | Thesis | | |
| Health status in medieval Dublin : analysis of the skeletal remains from the abbey of St. Thomas the Martyr | Buckley, Laureen | Article in Book | | 2003 |
| Hearing voices : the history of psychiatry in Ireland | Kelly, Brendan | Monograph or Collective Volume | Irish Academic Press | 2016 |
| Henry Archer | Thomas, David | Article in Journal | | 1950 |
| Henry Ellis | Hoyne, Thomas | Article in Journal | | 1956 |
| Henry Foxall and the Arigna Iron Works | Donovan, Jane | Article in Journal | | 2003 |
| Henry Pelham (1749-1806), painter, engraver, engineer, map-maker and illustrator of County Clare's antiquities | Harbison, Peter | Article in Book | | 2000 |
| Henry Quin, M.D. ... (1718-91) | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Monograph or Collective Volume | | 1919 |
| Henry Robert McAdoo - a tribute | Carroll, Thomas G. | Article in Journal | | 1999 |
| Henry VIII | Scarisbrick, John Joseph | Monograph or Collective Volume | | 1968 |
| Henry VIII and Ireland, 1509-34 | Quinn, D. B. (David Beers) | Article in Journal | | 1960 |
| Henry VIII, rebellion, and the rule of law | Ellis, Steven G., 1950- | Article in Journal | | 1981 |
| Hereditary enemies : Home Rule, Unionism, and The Times | Kennedy, Thomas C. | Article in Journal | | 2001 |
| Hermits and their Habitats | Thomas, Colleen M. | Article in Book | | 2021 |
| Hibernia Dominicana | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776 | Monograph or Collective Volume | | 1762 |
| Hibernia Dominicana : Supplementum | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776 | Monograph or Collective Volume | | 1772 |
| Hibernia Dominicana; sive, historia provinciae Hiberniae Ordinis Praedicatorum | Burke, Thomas, O.P., bishop of Ossory, c.1709-1776
| Monograph or Collective Volume | Gregg | 1970 |
| Hibernia im Ruhrgebiet : William Thomas Mulvaney & the industrialisation of the Ruhr | Dooge, Jim | Article in Journal | | 1997 |
| Hickie of Kilelton | Pierce, Thomas | Article in Journal | | 1957 |
| High Sheriffs of the King's County, 1655-1915 | Sadlier, Thomas U. | Article in Journal | | 1917 |
| Historia Anglicana, 1272-1422 | Riley, H. T.Walsingham, Thomas, c.1340-c.1422 | Monograph or Collective Volume | [s.n.] | 1965 |
| Historic and municipal documents of Ireland, A.D. 1172-1320, from the archives of the city of Dublin, etc | | Monograph or Collective Volume | | 1870 |
| Historic loyalism : allegiance, patriotism, Irishness and Britishness in Ireland | Hennessey, Thomas | Article in Book | | 2011 |
| Historical anthropology and the ethnographic tradition : a personal, historical, and intellectual account | Gulliver, P. H.Silverman, M. | Article in Book | | 1992 |
| Historical dictionary of Ireland | Thomas, Colin J. | Monograph or Collective Volume | Scarecrow | 1997 |
| Historical geography of Ireland from c.1700 | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1984 |
| Historical memoirs of the Geraldine earls of Desmond | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1872 |
| Historical sketch of the late Catholic Association of Ireland. | Wyse, Thomas, Sir, 1791-1862 | Monograph or Collective Volume | Henry Colburn | 1829 |
| Historical works | Gerald, of Wales, c.1146-1220x23Hoare, Richard Colt, Sir, 1758-1838Wright, Thomas, 1810-1877 | Monograph or Collective Volume | [s.n.] | 1968 |
| Histories of the Irish future | Fanning, Bryan | Monograph or Collective Volume | Bloomsbury | 2015 |
| History and development of Irish population censuses | Linehan, Thomas P. | Article in Journal | | 1991 |
| History and development of Irish population censuses : paper read to the Statistical and Social Inquiry Society of Ireland, 5 December 1991 | Linehan, Thomas P. | Monograph or Collective Volume | Statistical and Social Inquiry Society of Ireland | 1991 |
| History and environment | | Monograph or Collective Volume | University College Dublin: Lord Edward [Fitzgerald] Memorial Fund Board of Management | 1998 |
| History and politics : Macaulay and Ireland | Millgate, Jane | Article in Journal | | 1973 |
| History in stone | Smith, Des | Article in Journal | | 1996 |
| History in the thought of the architects of peace in Northern Ireland : Gerry Adams, John Hume, and David Trimble | Dolan, Thomas Pierce | Thesis | | |
| 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 Irish Confederation and the war in Ireland, 1641- [1649]: containing a narrative of affairs of Ireland / by Richard Bellings... with correspondence and documents of the Confederation and of the administrators of the English government in Ireland, contemporary personal statements, memoirs, etc. Now for the first time published from original manuscripts; [Vol. I-VII] / edited by John T. Gilbert | Bellings, Richard | Monograph or Collective Volume | The Editor | 1882-1891 |
| History of the medical teaching in Trinity College, Dublin, and of the School of Physic in Ireland | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Monograph or Collective Volume | | 1912 |
| History of the parish of Derrykeighan for three centuries | Camac, Thomas | Monograph or Collective Volume | Northern Constitution [Printer] | 1930 |
| Hoban-Thomas : a family history : flowerings from our ancestral garden | Hoban, Brendan | Monograph or Collective Volume | Brendan Hoban | 2021 |
| Hobbes, Bramhall and the politics of liberty and necessity : a quarrel of the Civil Wars and Interregnum | Jackson, Nicholas D. | Monograph or Collective Volume | Cambridge University Press | 2007 |
| Holy Cross Abbey, Co. Tipperary | Morris, Thomas | Monograph or Collective Volume | Eason | 1986 |
| Holy Trinity Church, Westport | Hastings, Caitríona | Article in Journal | | 2014 |
| Holy war at Aasleagh, 1851-1884 | McGinley, Michael | Article in Journal | | 2008 |
| Home front and everyday life | Fitzpatrick, David | Article in Book | | 2008 |
| Home rule finance, an experiment in justice | Kettle, Thomas Michael, 1880-1916 | Monograph or Collective Volume | Maunsell | 1911 |
| Home Rule, radicalism and the Liberal party, 1886-1895 | Heyck, Thomas William | Article in Book | | 1987 |
| Home Rule, radicalism and the Liberal party, 1886-95. | Heyck, Thomas William | Article in Journal | | 1974 |
| Home rulers at Westminster, 1880–1814 | Mulvagh, Conor | Article in Book | | 2018 |
| Home thoughts from abroad : the Australian letters of Thomas F. Culhane | Culhane, Thomas F., 1891-1969 | Monograph or Collective Volume | Glin Historical Society | 1998 |
| Hon. Eli Thayer, one of the early members of the American Irish Historical Society. A most distinguished American, known the world over. A few facts about his life and work | Murray, Thomas Hamilton | Article in Journal | | 1909 |
| Hon. Patrick J. McCarthy | Lee, Thomas Zanslaur | Article in Journal | | 1921 |
| Honorary degree for First President of the AGTI | Waddington, Shelagh B. | Article in Journal | | 2003 |
| Honouring Thomas Jackson, 1807-1890, architect | Dixon, Hugh | Article in Journal | | 1978 |
| Hopkins' friends and colleagues | Morrissey, Thomas J. | Article in Book | | 1988 |
| Housing | Johnson, Thomas | Article in Book | | 1944 |
| Housing and local government | Fahey, Tony | Article in Book | | 2001 |
| How early Irish canon lawyers dealt with St Augustine's indecent proposal | O'Loughlin, Thomas | Article in Book | | 2019 |
| How Major John MacBride became involved in the 1916 Rising | Jordan, Anthony | Article in Journal | | 2015 |
| How the Irish saved civilization : the untold story of Ireland's heroic role from the fall of Rome to the rise of medieval Europe | Cahill, Thomas | Monograph or Collective Volume | Hodder and Stoughton | 1995 |
| How the Irish won the American revolution : a new look at the forgotten heroes of America's War of Independence | Tucker, Phillip Thomas | Monograph or Collective Volume | Skyhorse Publishing | 2015 |
| Hucksters and petty retailers in Thomastown, 1880-1945 | Gulliver, P. H.Silverman, Marilyn | Article in Journal | | 1993 |
| Hugh Cargill, a friend of liberty | O'Malley, Thomas | Article in Journal | | 1900 |
| Hugh Kennedy and the Constitutional Development of the Irish Free State, 1922-1923 | Towey, Thomas | Article in Journal | | 1977 |
| Hugh Lane and his pictures | Bodkin, Thomas Patrick, 1887-1961 | Monograph or Collective Volume | | 1932 |
| Hugh O'Neill - not guilty | Morgan, Hiram | Article in Journal | | 2010 |
| Hugh O'Neill : free spirit, religious chameleon or ardent Catholic? | O'Connor, Thomas | Article in Book | | 2004 |
| Hugh O'Neill, 2nd earl of Tyrone and Captain Thomas Lee, double-agent | McGurk, J. N. N. (John James Noel) | Article in Journal | | 2006 |
| Humbert's raid on Ireland, 1798 | Pakenham, Thomas | Article in Journal | | 1969 |
| Hungary and Ireland : historical contrasts, historical parallels : a lecture given in Dublin, 3rd December 1991 | Kabdebo, Thomas | Monograph or Collective Volume | St Patrick's College | 1992 |
| Hyde in conflict | Blythe, Ernest, 1889-1975 | Article in Book | | 1972 |
| Hyde, D. P. Moran, and Irish Ireland | McCartney, Donal | Article in Book | | 1967 |
| I am not a master of events : the speculation of John Law and Lord Londonderry in the Mississippi and South Sea Bubbles | Neal, Larry | Monograph or Collective Volume | Yale University Press | 2012 |
| I die in a good cause : a study of Thomas Ashe, idealist and revolutionary | Ó Lúing, Seán | Monograph or Collective Volume | Anvil Books | 1970 |
| I remember | Kelly, Thomas | Article in Journal | | 1942 |
| I'm sending a shamrock to remind you of home : Roscommon families and the Irish diaspora, 1875-1950 | Callahan, Thomas, Jr. | Monograph or Collective Volume | Glasnevin Publishing | 2013 |
| I.R.A. sectarianism in Skibbereen ? | Ungued-Thomas, Jasper | Article in Journal | | 2010 |
| Ideological architecture and regional identities : Workhouses in Ireland | Thomas, Liz | Article in Book | | 2005 |
| Ideology and the Famine | Gray, Peter, 1965- | Article in Book | | 1995 |
| Imagery and imaginary of islander identity : older people and migration in Irish small-island communities | Burholt, VanessaScharf, ThomasWalsh, Kieran | Article in Journal | | 2013 |
| Images and iconoclasts in early modern Gaelic texts | Mac Craith, Mícheál | Article in Book | | 2010 |
| Imaginative literature and the revolution | MacManus, Francis | Article in Book | | 1968 |
| Imitatio Christi: A small taste of Fr Dónald Ó Súilliobháin's translation: "Searc-Leanmhain Chríosd" | Hamilton, Pádraig | Article in Journal | | 2023 |
| Imperial minds : Irish writers and empire in the nineteenth century - Charles Gavan Duffy, Thomas Moore, Charles Lever and Kim | Shanahan, Jim | Article in Book | | 2020 |
| Imported late-Roman Mediterranean pottery in Ireland and western Britain : chronologies and implications | Thomas, Charles | Article in Journal | | 1976 |
| In a fierce and frightful region : Thomas Francis Meagher's Montana adventure, 1865-1867 | Axeline, Jon | Article in Journal | | 2003 |
| In memoriam Thomas Kenneth Whitaker (1916-2017) | Ó Catháin, Séamas | Article in Journal | | 2017 |
| In memory of Lieutenant Tom Kettle, 'B company, 9th Royal Dublin Fusiliers | Burke, Tom | Article in Journal | | 2004 |
| In memory of Lieutenant Tom Kettle, 'B' Company, Ninth Royal Dublin Fusiliers | Burke, John | Article in Journal | | 2003 |
| In memory of Tom Kettle | Burke, Tom | Article in Journal | | 2002 |
| In pursuit of comparative aspects of Irish and Scottish development : a review of the symposium | Devine, Thomas MartinDickson, David | Article in Book | | 1983 |
| In search of a political path : Irish republicanism, 1922 to 1927 | O'Neill, Thomas Patrick | Article in Book | | 1977 |
| In search of paradise : collecting trees in Ireland | Pakenham, Thomas | Article in Book | NA | 2022 |
| In search of peaks, passes and glaciers : Irish Alpine pioneers | Nugent, Frank | Monograph or Collective Volume | Collins | 2013 |
| In search of Thomas Sheahan : radical politics in Cork, 1824-1836 | Lane, Fintan | Monograph or Collective Volume | Irish Academic Press | 2001 |
| In search of Thomas Smyth, mayor of Limerick | Spurrell, Jonathan C. | Article in Journal | | 2009 |
| In state opinions alamode : Swift and the frontispiece to Thomas Burnett's Essays (1714) | McMinn, Joseph | Article in Journal | | 1995 |
| In Tenga Bithnua : from apocalypse to homily? | Carey, John | Article in Book | | 1999 |
| In the shadow of St Patrick's | McCall, Patrick JosephWall, Thomas | Monograph or Collective Volume | Carraig Books | 1976 |
| In the valley of the Nore : a social history of Thomastown, Co. Kilkenny, 1840-1983 | Gulliver, P. H.Silverman, Marilyn | Monograph or Collective Volume | Geography Publications | 1986 |
| In the valley of the Nore : a social history of Thomastown, county Kilkenny, 1840-1893 | Gulliver, P. H.Silverman, Marilyn | Monograph or Collective Volume | [s.n.] | 1986 |
| Incomes, social classes and economic growth in Ireland and Scotland 1600-1900 | Cullen, L. M. (Louis Michael) | Article in Book | | 1983 |
| Indiscipline and disaffection in the armed forces in Ireland in the 1790s | Bartlett, Thomas | Article in Book | | 1985 |
| Indiscipline and disaffection in the French and Irish armies during the revolutionary period | Bastlett, Thomas | Article in Book | | 1990 |
| Industrial decline in the nineteenth century | Green, E. R. R. | Article in Book | | 1969 |
| Industrial relations | Roche, W. K. | Article in Book | | 1994 |
| Industry | Curtin, Tom | Article in Book | | 1980 |
| Industry : the revolution unfinished | Kennedy, Kieran A. | Article in Book | | 1986 |
| Industry in Waterford city, 1932-1962 | Hearne, John M. | Article in Book | | 1992 |
| Informers, agents, the IRA and British counter-insurgency strategy during the Northern Ireland Troubles, 1969 to 1998 | Leahy, Thomas Daniel Melchizadek | Thesis | | |
| Informers, informants & information : the secret history of the 1790s | Bartlett, Thomas | Article in Journal | | 1998 |
| Informers, Informants & Information: The secret history of the 1790s | Bartlett, Thomas | Article in Book | | 2018 |
| Informers, informants and information : the secret history of the 1790s reconsidered | Bartlett, Thomas | Article in Book | | 2003 |
| Initial findings at Kilteasheen, Knockvicar, Co. Roscommon | Barton, KevinFinan, ThomasRead, Christopher | Article in Journal | | 2005 |
| Innti and onwards : the new poetry in Irish | Titley, Alan | Article in Book | | 1996 |
| Inside out : value and display in Thomas De Quincey and Isaac Butt | Bigelow, Gordon | Article in Book | | 2007 |
| Inside story : the photographs of Thomas Gribben of Loughinisland | Turner, Brian S. | Monograph or Collective Volume | Down County Museum | 2010 |
| Inspector Thomas Lowth, D.M.P. | Lowth, Cormac F. | Article in Journal | | 2017 |
| Institutional space and the geography of confinement in Ireland, 1750-2000 | Cox, Catherine | Article in Book | | 2018 |
| Integration : Patriotism and Nationalism | Kidd, Colin | Article in Book | | 2002 |
| Interconnections between the lands of Edward I : a Welsh-English mercenary force in Ireland, 1285-1304 | Thomas, Avril | Article in Journal | | 1993 |
| Interdenominational relations in pre-famine Tipperary | McGrath, Thomas | Article in Book | | 1985 |
| Interim report on the excavations at Kells priory, Co. Kilkenny, 1980 | Fanning, Thomas | Article in Journal | | 1981 |
| Intra-party decision-making in contemporary Europe : improving representation or ruling with empty shells? | Poguntke, ThomasScarroe, Susan E.Webb, Paul D. | Article in Journal | | 2022 |
| Introduction | Wooding, Jonathan M. | Article in Book | | 2010 |
| Introduction | Hachey, Thomas E. | Article in Book | | 2011 |
| Introduction | Nolan, William | Article in Book | | 1986 |
| Introduction | Farrell, Mel | Article in Book | | 2023 |
| Introduction | Keir, David Lindsay, Sir | Article in Book | | 1955 |
| Introduction | Lyons, Mary AnnO'Connor, Thomas | Article in Book | | 2006 |
| Introduction | Charles-Edwards, T. M. (Thomas Mowbray)Owen, Morfydd E.Russell, Paul, 1956 Feb. 23- | Article in Book | | 2000 |
| Introduction | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2003 |
| Introduction | Lyons, Mary Ann,O'Connor, Thomas, | Article in Book | | 2010 |
| Introduction - college communities abroad: education, migration and Catholicism in early modern Europe | Chambers, Liam | Article in Book | | 2017 |
| Introduction : A fragmented Renaissance | Herron, Thomas, 1968- | Article in Book | | 2007 |
| Introduction : ancient republics and other political dreams | McDonald, Marianne | Article in Book | | 2005 |
| Introduction : beyond nationalism and complacency : the evolution of Thomas O'Brien | Klaus, H. Gustav | Article in Book | | 1994 |
| Introduction : converts and conversion in Ireland, 1650-1850 | Brown, MichaelMcGrath, Charles IvarPower, Thomas P. | Article in Book | | 2005 |
| Introduction : monumental Sidney | Herron, Thomas, 1968-Maley, Willy | Article in Journal | | 2011 |
| Introduction : Moylurg and Lough Cé in the later Middle Ages | Finan, Thomas | Article in Book | | 2010 |
| Introduction : prehistoric and early Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2005 |
| Introduction : the FitzGeralds, Florence, St Fiachra and a few fragments | Potterton, Michael | Article in Book | | 2011 |
| Introduction to Irish farming | Baldwin, Thomas | Monograph or Collective Volume | | 1874 |
| Introduction to practical farming, specially written for use in Irish national schools | Baldwin, Thomas | Monograph or Collective Volume | | 1875 |
| Introduction. The historical reputation of Thomas Wentworth | Merritt, Julia F. | Article in Book | | 1996 |
| Introduction: Lord Edward Fitzgerald, 1763-98 : history and environment | Bartlett, Thomas | Article in Book | | 1998 |
| Introduction: Thomas Moore and romantic inspiration reassessed : enlightened tolerance and interdisciplinary poetics | Caraher, Brian G.McCleave, Sarah | Article in Book | | 2018 |
| Introductions to sections 1 to 8 | Whelan, Kevin | Article in Book | | 2003 |
| Inventing the myth : political passions and the Ulster Protestant imagination | Parr, Connal | Monograph or Collective Volume | Oxford University | 2017 |
| Investigating the Protestant ‘Kaleidoscope’ | McDonald, Henry | Article in Book | | 2015 |
| Iona : the earliest poetry of a Celtic monastery | Clancy, Thomas OwenMárkus, Gilbert | Monograph or Collective Volume | Edinburgh University Press | 1994 |
| Iona v. Kells : succession, jurisdiction and politics in the Columban Familia in the later tenth century | Clancy, Thomas Owen | Article in Book | | 2011 |
| Iona, and some satellites | Hannan, Thomas | Monograph or Collective Volume | Chambers | 1937 |
| Iona, Scotland and the Céli Dé | Clancy, Thomas Owen | Article in Book | | 1996 |
| IRA activity in Kildare during the War of Independence | Dooley, Terence A. M. | Article in Book | | 2006 |
| Ireland | Cosgrove, Art | Article in Book | | 1998 |
| Ireland - America's first ally | Mullen, Thomas J. | Article in Journal | | 1976 |
| Ireland - the EEC Referendum1972: A campaign compendium | Desmond, Barry | Monograph or Collective Volume | self-published | 2019 |
| Ireland 1865-1921 | Dillon, Thomas | Article in Journal | | 1966 |
| Ireland 1880–2016: negotiating sovereignty and freedom | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2018 |
| Ireland : a history | Bartlett, Thomas | Monograph or Collective Volume | Cambridge University Press | 2010 |
| Ireland : external relations 1926-1939 | Mansergh, Nicholas, 1910-1991 | Article in Book | | 1967 |
| Ireland : from legislative independence to legislative union 1782-1800 | Bartlett, Thomas | Article in Book | | 2000 |
| Ireland : its evils, and their remedies; being a refutation of the errors of the Emigration Committee ... | Sadler, M. T. | Monograph or Collective Volume | | 1829 |
| Ireland : its physical, historical, social and economic geography | Freeman, Thomas Walter | Monograph or Collective Volume | Methuen | 1950 |
| Ireland : Radicalism, Rebellion and Union | Powell, Martyn J. | Article in Book | | 2002 |
| Ireland : The Making of the "Protestant Ascendancy", 1690-1760 | McNally, Patrick | Article in Book | | 2002 |
| Ireland and Australia | | Monograph or Collective Volume | Mercier Press in collaboration with Radio Telefís Éireann | 1984 |
| Ireland and Europe, 1580-1815 : some historiographical remarks | O'Connor, Thomas | Article in Book | | 2001 |
| Ireland and Hungary : a study in parallels, with an Arthur Griffith bibliography | Kabdebo, Thomas | Monograph or Collective Volume | Four Courts | 2001 |
| Ireland and its invaders, 1166-1186 | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2003 |
| Ireland and Scotland 1600-1850 : parallels and contrast in economic and social development | | Monograph or Collective Volume | John Donald | 1983 |
| Ireland and Scotland : literature and culture, state and nation, 1966-2000 | Ryan, Ray | Monograph or Collective Volume | Oxford University Press | 2002 |
| Ireland and Scotland : the seventeenth-century legacies compared | Mitchison, Rosalind | Article in Book | | 1983 |
| Ireland and the 'end of the European crisis', 1923-24 | Barry, Gearóid | Article in Book | | 2023 |
| Ireland and the Bolshevik Revolution | De Wiel, Jérome aan | Article in Journal | | 2017 |
| Ireland and the British Commonwealth : the Dominion Settlement | Mansergh, Nicholas, 1910-1991 | Article in Book | | 1966 |
| Ireland and the Corfu crisis, 1923 | Phelan, Mark
| Article in Journal | | 2017 |
| Ireland and the French Revolution | Elliott, Marianne | Article in Book | | 1989 |
| Ireland and the Great War | Fitzpatrick, David | Article in Book | | 2018 |
| Ireland and the quality of life : the famine era | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Edwin Mellen Press | 1997 |
| Ireland and the Spanish Civil War, 1935 to 1939 | Bell, J. Bowyer | Article in Book | | 1994 |
| Ireland at the U.N. | Mulkeen, Thomas A. | Article in Journal | | 1973 |
| Ireland during the Revolutionary and Napoleonic wars, 1793–1815 | Bartlett, Thomas | Article in Book | | 2018 |
| Ireland her own : an outline history of the Irish struggle for national freedom and independence | Jackson, Thomas Alfred | Monograph or Collective Volume | Lawrence and Wishart | 1971 |
| Ireland in conflict, 1922-1998 | Fraser, Thomas G. | Monograph or Collective Volume | Routledge | 2000 |
| Ireland in the 1350s : Sir Thomas de Rokeby and his successors | Otway-Ruthven, Annette Jocelyn, 1909-1989 | Article in Journal | | 1967 |
| Ireland in the 1990s : policy concertation triumphant | O'Donnell, RoryThomas, Damien | Article in Book | | 2001 |
| Ireland in the Renaissance, c.1540-1660 | | Monograph or Collective Volume | Four Courts | 2007 |
| Ireland in the world economy | McAleese, Dermot | Article in Book | | 1986 |
| Ireland in transition : economic and social change since 1960 | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1986 |
| Ireland looking outwards 1880–2016 | O' Halpin, Eunan | Article in Book | | 2018 |
| Ireland on the international stage | Dorr, Noel | Article in Book | | 2009 |
| Ireland through a Chinese mirror | McCormack, Jerusha | Article in Book | | 2009 |
| Ireland transformed? Modernisation, secularisation and conservatism since 1973 | Girvin, Brian | Article in Book | | 2018 |
| Ireland's children : quality of life, stress, and child development in the Famine era | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Greenwood | 1998 |
| Ireland's first inter-party government, 1948-1951 | McElligott, William Thomas | Thesis | | 1999 |
| Ireland's first school of medicine | Bewley, Beulah, Dame | Article in Journal | | 2011 |
| Ireland's minstrel : a life of Tom Moore : poet, patriot and Byron's friend | Kelly, Linda, 1936- | Monograph or Collective Volume | I.B. Tauris | 2006 |
| Ireland's prehistoric communication networks : exploring the movements of the early prehistoric inhabitants of the Barrow valley | Kador, Thomas | Article in Journal | | 2007 |
| Ireland's unique abbey : the abbey that refused to die | Egan, Thomas A. | Article in Journal | | 1963 |
| Ireland, America and the transformation of US politics, 1783-1800 | Bric, Maurice J. | Article in Book | | 2003 |
| Ireland, Australia and the Commonwealth | Murphy, Brian | Article in Book | | 1984 |
| Ireland, Elizabeth I and the Counter-Reformation | Edwards, R. W. D. (Robert Walter Dudley) | Article in Book | | 1961 |
| Ireland, empire and union, 1690-1801 | Bartlett, Thomas | Article in Book | | 2004 |
| Ireland, England and the restoration of the Society of Jesus | Morrissey, Thomas J. | Article in Book | | 2003 |
| Ireland, Germany and the Nazis: Politics and Diplomacy, 1919-1939 | O'Driscoll, Mervyn | Monograph or Collective Volume | Four Courts Press | 2018 |
| Ireland, habitat, culture, and personality | Cawley, Mary | Article in Book | | 1988 |
| Ireland, New York, and the eighteenth-century Atlantic world | Truxes, Thomas M. | Article in Journal | | 2011 |
| Ireland, New York, and the eighteenth-century Atlantic world | Truxes, Thomas M. | Article in Journal | | 2011 |
| Irish agriculture : land tenure systems, redistribution and risk | Hickson, Charles | Article in Book | | 2009 |
| Irish Americans in American politics and the Catholic Church, 1870-1945 | Meagher, Thomas J. | Article in Book | | 2024 |
| Irish and Anglo-Norman warfare in twelfth-century Ireland | Flanagan, Marie Therese | Article in Book | | 1996 |
| Irish and Scottish development revisited | Devine, Thomas Martin | Article in Book | | 2003 |
| Irish and Scottish poetry in the Romantic era | Dornan, Stephen | Thesis | | |
| Irish apocalypse : Derricke, Dürer, and Foxe | Herron, Thomas | Article in Book | NA | 2021 |
| Irish archaeology and the poetry of Edmund Spenser : content and context | Herron, Thomas, 1968- | Article in Book | | 2009 |
| Irish as a vernacular before the Norman invasion | Greene, David | Article in Book | | 1969 |
| Irish bibliography | Clarke, DesmondGilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Journal | | 1954 |
| Irish businessman and French courtier : the career of Thomas Sutton, comte de Clonard, c.1722-1782 | Cullen, L. M. (Louis Michael) | Article in Book | | 2000 |
| Irish cities | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1995 |
| Irish clerics and French politics of grace | O'Connor, Priscilla | Article in Book | | 2003 |
| Irish clerics and Jacobites in early eighteenth-century Paris, 1700-30 | O'Connor, Priscilla | Article in Book | | 2001 |
| Irish clerics in Madrid, 1598-1665 | García Hernán, Enrique | Article in Book | | 2006 |
| Irish colleges abroad | Wall, Thomas | Article in Journal | | 1947 |
| Irish Collegians in Spanish Service (1560–1803) | O’Connor, Thomas | Article in Book | | 2018 |
| Irish colonists in south-west Britain | Thomas, Charles | Article in Journal | | 1973 |
| Irish communities in early-modern Europe | | Monograph or Collective Volume | Four Courts | 2006 |
| Irish confederates : the Civil War's forgotten soldiers | Tucker, Phillip Thomas, 1953- | Monograph or Collective Volume | McWhiney Foundation Press | 2006 |
| Irish Congress of Trade Unions appendices | Anonymous | Article in Book | | 1994 |
| Irish Congress of Trade Unions bibliography of trade unions and trade unionism in Ireland | Anonymous | Article in Book | | 1994 |
| Irish Congress of Trade Unions. Congress centenary miscellany | Anonymous | Article in Book | | 1994 |
| Irish costume in two portraits | Anonymous | Article in Journal | | 1957 |
| Irish country towns | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1994 |
| Irish covenanters : politics and society in the nineteenth century | Donachie, Thomas Charles | Thesis | | |
| Irish creamware : the Downshire pottery in Belfast | Francis, Peter | Article in Journal | | 1995 |
| Irish cultural politics, Thomas McGreevy and the Avant-Garde, 1922-1941 | Hutton-Williams, Francis Brent | Thesis | | |
| Irish cursing and the art of magic, 1750–2018 | Waters, Thomas | Article in Journal | | 2020 |
| Irish debates on money and banking | Turner, John | Article in Book | | 2009 |
| Irish diplomatic missions to Rome during the 1640s | Ó hAnnracháin, Tadhg | Article in Book | | 2006 |
| Irish economic history : fact and myth | Cullen, L. M. (Louis Michael) | Article in Book | | 1969 |
| Irish elements in the pseudo-Isidorian Liber de ortu et obitu patriarcharum | Carracedo-Fraga, José | Article in Book | | 1999 |
| Irish emigration to Argentina : a different model | McKenna, Patrick | Article in Book | | 2000 |
| Irish émigré group strategies of survival, adaptation and integration in seventeenth and eighteenth-century Spain | Recio Morales, Óscar | Article in Book | | 2006 |
| Irish enterprise in the university of Paris (1651-1653) | Wall, Thomas | Article in Journal | | 1944 |
| Irish entrepreneurs and Sweden in the first half of the eighteenth century | Murdoch, Steve | Article in Book | | 2006 |
| Irish famine in literature | Kelleher, Margaret | Article in Book | | 1995 |
| Irish foreign policy 1919 to 1973 | Kennedy, Michael (Michael J.) | Article in Book | NA | 2018 |
| Irish foreign policy, 1949-69 | Williams, T. Desmond | Article in Book | | 1979 |
| Irish Franciscan archbishop of Dublin : Thomas Fleming, 1623-1655 | Barrett, Fergus | Article in Journal | | 1941 |
| Irish Franciscan networks at home and aborad, 1607-1640 | O'Connor, Thomas | Article in Book | | 2010 |
| Irish Gothic theory before Pugin | Masheck, J. D. C. | Article in Journal | | 1981 |
| Irish home rule and constitutional reform in the British Empire, 1885-1914 | Mohr, Thomas | Article in Journal | | 2019 |
| Irish homilies A.D. 600-1100 | McNamara, Martin | Article in Book | | 2002 |
| Irish immigrants and Scottish society in the nineteenth and twentieth centuries | | Monograph or Collective Volume | John Donald | 1991 |
| Irish immigration to Latin America | Dunleavy, Harry | Monograph or Collective Volume | Newman Springs Publishing | 2019 |
| Irish in Britain 1748 | Mahon, Thomas | Article in Journal | | 1966 |
| Irish in the modern world | Ó Cuív, Brian | Article in Book | | 1969 |
| Irish interloping trade and colonial warfare in the 18th century | Truxes, Thomas M. | Article in Book | | 2010 |
| Irish involvement in the 'surprise of Cremona', 1702 | Ó hAnnracháin, Tadhg | Article in Book | | 2006 |
| Irish issues in the nineteenth and twentieth century : radicalism in a Scottish context? | McCaffrey, John F. | Article in Book | | 1991 |
| Irish Jacobite involvement in the American war of independence | Clarke de Dromantin, Patrick | Article in Book | | 2003 |
| Irish Jansenists, 1600-70 : religion and politics in Flanders, France, Ireland and Rome | O'Connor, Thomas | Monograph or Collective Volume | Four Courts | 2008 |
| Irish land questions 1879–1923 | Dooley, Terence | Article in Book | | 2018 |
| Irish language textbooks in the United States, 1873-1904 | Ihde, Thomas W. | Article in Journal | | 2005 |
| Irish leaders of our time : 1, Tom Clarke | MacDonagh, Donagh | Article in Journal | | 1945 |
| Irish leaders of our time : 16, Thomas Ashe | Lawless, J. V. | Article in Journal | | 1946 |
| Irish leaders of our time : 9, Thomas MacDonagh | MacDonagh, Donagh | Article in Journal | | 1945 |
| Irish Legion officers of Kilkenny origin. Thomas Jackson of Ballyreddin | Dunne-Lynch, Nicholas | Article in Journal | | 2009 |
| Irish links with Santa Maria dell'Anima in Rome | Ó Fearghail, Fearghus | Article in Journal | | 2009 |
| Irish literary tradition | Mac Cana, Proinsias | Article in Book | | 1969 |
| Irish literature in Spanish Flanders | Ó hUiginn, Ruairí | Article in Book | | 2010 |
| Irish medical men and philosophers | Shaw, Francis | Article in Book | | 1961 |
| Irish medical obituary | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1948 |
| Irish medieval tiles : decorated medieval tiles in Ireland, with an inventory of sites and designs and a visual index | Eames, E. S.Fanning, Thomas | Monograph or Collective Volume | | 1988 |
| Irish melodies and discordant politics. Thomas Moore's 'Memoirs of Captain Rock' (1824) | Nolan, Emer | Article in Journal | | 2006 |
| Irish migrant networks and rivalries in Spain, 1575-1659 | Schüller, Karin | Article in Book | | 2003 |
| Irish migrants in Europe after Kinsale, 1602-1820 | | Monograph or Collective Volume | Four Courts | 2003 |
| Irish migration and exiles in Spain : refugees, soldiers, traders and statesmen | Villar García, María Begoña | Article in Book | | 2006 |
| Irish migration to Spain and the formation of an Irish college network, 1589-1800 | O'Connor, Thomas | Article in Book | | 2001 |
| Irish modernism in an international frame : Thomas MacGreevy, Sean O'Faolain and Samuel Beckett in the 1930s | Moss, Rhiannon Sarah | Thesis | | |
| Irish monks in the Golden Age | | Monograph or Collective Volume | | 1963 |
| Irish nationalism and the British connection | Hachey, Thomas E. | Article in Book | | 1989 |
| Irish naval service | Adams, Thomas A., 1945- | Monograph or Collective Volume | World Ship Society | 1982 |
| Irish oral tradition | Ó Súilleabháin, Seán | Article in Book | | 1969 |
| Irish periodicals and the dissemination of French enlightenment writings in the eighteenth century | Sheridan, Geraldine | Article in Book | | 2003 |
| Irish philosophy in the nineteenth century : epistemology and metaphysics | | Monograph or Collective Volume | Thoemmes | 2002 |
| Irish poetry and Norse dróttkvaett | Holland, GaryLindow, John | Article in Book | | 1996 |
| Irish poetry since Kavanagh [the Thomas Davis lectures] | Dorgan, Theo | Monograph or Collective Volume | Four Courts | 1996 |
| Irish poets in English | | Monograph or Collective Volume | The Mercier Press | 1973 |
| Irish political activity in Spain during the restoration | Pérez Tostado, Igor | Article in Book | | 2006 |
| Irish political economy before and after the famine | Boylan, Thomas A.McDonough, TerrenceSlater, Eamonn | Article in Book | | 2005 |
| Irish possessions of St. Thomas of Acre | Brooks, E. St. J. | Article in Journal | | 1956 |
| Irish preaching before the end of the ninth century : assessing the extent of our evidence | O'Loughlin, Thomas | Article in Book | | 2001 |
| Irish radicalism in the late eighteenth century | Dickinson, Harry Thomas | Article in Journal | | 1997 |
| Irish rectors at Seville, 1619-1687 | Finegan, Francis | Article in Journal | | 1966 |
| Irish republicanism in England : the first phase, 1797-9 | Elliott, Marianne | Article in Book | | 1979 |
| Irish revival movements | Ó Hailín, Tomás | Article in Book | | 1969 |
| Irish Romance : Spenser's Prince Arthur and The Hystorye of Olyuer of Castylle (c. 1518) | Herron, Thomas, 1968- | Article in Journal | | 2004 |
| Irish Romanesque architecture | O'Keeffe, Tadhg | Article in Book | | 1998 |
| Irish romantic poets 1850-1900 | Reynolds, Lorna | Article in Book | | 1973 |
| Irish roots, Australian rhizomes : ancestry and diasporic cultural identity in the works of Thomas Keneally and Christopher Koch | Habel, Chad | Article in Journal | | 2008 |
| Irish sagas | | Monograph or Collective Volume | The Stationery Office for Radio Éireann | 1959 |
| Irish soldiers abroad, 1600-1800 | Murtagh, Harman | Article in Book | | 1996 |
| Irish soldiers of the old regime in Canada | Guerin, Thomas | Article in Journal | | 1954 |
| Irish storytelling after the coming of the Normans | Murphy, Gerard | Article in Book | | 1961 |
| Irish studies : a general introduction | | Monograph or Collective Volume | Gill & Macmillan | 1988 |
| Irish Studies in the second-level school curriculum in Ireland 1973-1977 : a missed opportunity for the development of an inclusive notion of Irish identity | O'Donoghue, Tom ; Walsh, Thomas | Article in Journal | | 2025 |
| Irish swordsmen of France. With a foreword by Rev. Patrick Browne | Hayes, Richard Francis | Monograph or Collective Volume | | 1934 |
| Irish symbols of 3500 B.C. | Thomas, N. L. | Monograph or Collective Volume | Mercier Press | 1988 |
| Irish translation in continental Europe, 1630-1660 | Dillon, Charles | Article in Book | | 2006 |
| Irish translations of Thomas à Kempis, De Imitatione Christi | Ó Cuív, Brian | Article in Journal | | 1954 |
| Irish travellers to the Dead Sea: The interplay and impact of empirical investigation and Biblical exegesis | O'Loughlin, Thomas | Article in Book | | 2018 |
| Irish travelling artists : Ireland, Southern Asia and the British Empire, 1760-1850 | McDermott, Siobhan | Thesis | | |
| Irish urban cultures | | Monograph or Collective Volume | Institute of Irish Studies, QUB | 1993 |
| Irish voices from the Spanish Inquisition : migrants, converts and brokers in early modern Iberia | O'Connor, Thomas | Monograph or Collective Volume | Palgrave Macmillan | 2016 |
| Irish votes and Yankee cotton : the constitution of 1853 | O'Connor, Thomas H. | Article in Journal | | 1983 |
| Irish warfare before 1100 | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1996 |
| Irish warrants - hidden treasures from the East (Riding) | Empey, Mark | Article in Journal | | 2013 |
| 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 nationalism, 1870-1890 | Brown, Thomas N. | Monograph or Collective Volume | Lippincott | 1966 |
| Irish-American trade in the eighteenth century | Truxes, Thomas Michael | Thesis | | 1985 |
| Irish-American Trade, 1660-1783 | Truxes, Thomas M. | Monograph or Collective Volume | Cambridge University Press | 1988 |
| Irish-Americans, Woodrow Wilson, and self-determination : a re-evaluation | O'Grady, Joseph P. | Article in Journal | | 1963 |
| 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 |
| Irishness and womanhood in nineteenth-century British writing | Tracy, Thomas J. | Monograph or Collective Volume | Ashgate | 2009 |
| Irland - korstog og klassekamp | Rordam, Thomas | Monograph or Collective Volume | Det Danske Forlag | 1973 |
| Irlandeses en Marruecos : el batallón de Thomas Stucley en la batalla de Alcazarquivir (1578) | Bunes Ibarra, Miguel Angel de | Article in Book | | 2002 |
| Italian opera in Dublin | Allen, John | Article in Book | | 1998 |
| Itinerarium ... cum historiâ facti Butleri, Gordon, Lesley et aliorum | Carve, Thomas | Monograph or Collective Volume | | 1639 |
| Itinerarium ... cum historia facti Butleri, Gordon, Leslie et aliorum | | Monograph or Collective Volume | [s.n.] | 1639 |
| J. Sheridan Le Fanu : a bio-bibliography | Crawford, Gary William | Monograph or Collective Volume | Greenwood Press | 1995 |
| J. Sheridan Le Fanu : letters to William Blackwood and John Forster | McCormack, W. J. | Article in Journal | | 1973 |
| J. Sheridan Le Fanu, Chapelizod and the Dublin connection | Brennan, Kevin | Article in Journal | | 1980 |
| Jack B. Yeats : a vision of Ireland | Booth, John | Monograph or Collective Volume | Thomas & Lochar | 1993 |
| Jacob brothers' intervention saves life of man wrongly convicted | Fennelly, Teddy | Article in Journal | | 2010 |
| Jacobitism, Catholicism and the Irish Protestant elite, 1700-1710 | Doyle, Thomas | Article in Journal | | 1997 |
| James and Thomas Drummond : their Scottish origins and curatorships in Irish botanic gardens (ca.1808-ca.1831) | Nelson, E. Charles | Article in Journal | | 1990 |
| James Anthony Froude on nation and empire : a study in Victorian racialism | Thompson, Thomas Walter | Monograph or Collective Volume | Garland | 1987 |
| James Anthony Froude, a biography, 1 : 1818-56; 2 : 1856-1894. 2 vols. | Dunn, W. H. | Monograph or Collective Volume | | 1961 |
| 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 Clarence Mangan | Ó Faracháin, Roibeárd | Article in Book | | 1945 |
| James Connolly | Ryan, Desmond | Article in Book | | 1966 |
| James Connolly and Patrick Pearse | MacArdle, Dorothy | Article in Book | | 1960 |
| James Connolly and the worker's republic | Hanley, Brian | Article in Book | | 2005 |
| James Duffy, the Young Ireland publisher | MacManus, M. J. | Article in Book | | 1945 |
| James Fintan Lalor | O'Shannon, Cathal | Article in Book | | 1945 |
| James Fintan Lalor | Goulding, JohnO'Neill, Thomas Patrick | Monograph or Collective Volume | Wexford Historical Publications | 2003 |
| James Fintan O'Neill | O'Neill, Thomas Patrick | Article in Book | | 1966 |
| James Fitzpiers Fitzgerald, Captain Thomas Lee, and the problem of 'secret traitors': conflicted loyalties during the Nine Years' War, 1594-1603 | Canning, Ruth A. | Article in Journal | | 2015 |
| James Joyce and the invention of Irish history : ‘Finnegans Wake’ in context | Hofheinz, Thomas C. | Monograph or Collective Volume | Cambridge University Press | 1995 |
| James Kirkland and other Potsdam Grenadiers of Irish birth | Ferguson, Kenneth | Article in Journal | | 2011 |
| James Mullett (1854-1915), 'Invincible' | Mac Aongusa, Brian | Monograph or Collective Volume | Foxrock Local History Club | 2016 |
| James Shirley and the earl of Kildare : speculating playhouses and dwarves à la mode | Griffith, Eva | Article in Book | | 2011 |
| James Stephens and Paris : an insight gleaned from letters to Thomas Bodkin | Bramsbäck, Birgit | Article in Book | | 1991 |
| James Stephens and Thomas Clarke Luby | Ryan, Desmond | Article in Book | | 1968 |
| James Thomas Griffin : 28 October 1929 - 9 May 2010 | Bull, PhilipOrmonde, Paul | Article in Journal | | 2010 |
| James Thomas Jackson of Ballyoran, 1868-1938 | Cox, Ronald C. | Article in Journal | | 2013 |
| Jane Austen's Irish friend : Rt. Hon. Thomas Langlois Lefroy, 1776-1869 | Lefroy, J. A. P. | Article in Journal | | 1979 |
| Jane Austen's Irish friend : Thomas Langlois Lefroy of Carriglas manor, 1776-1869 | Lefroy, Patrick | Article in Journal | | 1983 |
| Jasper Wolfe of Skibbereen | Ungoed-Thomas, Jasper | Monograph or Collective Volume | Collins Press | 2008 |
| Jean-Thomas "Tomi" Ungerer 28 November 1931-9 February 2019 [Obituary] | Anonymous | Article in Journal | | 2019 |
| Jeremiah Curtin - folklorist, linguist | Cannon, Thomas Gildea | Article in Journal | | 1995 |
| Jeremiah Hogan and University College Dublin | Nevin, Thomas E. | Article in Journal | | 1985 |
| Jeremiah O'Donovan Rossa's funeral | Connell, Joseph E. A., Jr. | Article in Journal | | 2015 |
| Jesuit Nuncios to Tudor Ireland | McCoog, Thomas M. | Article in Book | | 2002 |
| Jim Larkin | Plunkett, James, 1920-2003 | Article in Book | | 1966 |
| Jim Larkin and the risen people | Plunkett, James, 1920-2003 | Article in Book | | 1994 |
| John A. McClelland 1870-1920 | O'Connor, Thomas | Article in Book | | 2003 |
| John and James Toohey : brewers | Anonymous | Article in Journal | | 1988 |
| John Blake Dillon | Rooney, Philip | Article in Book | | 1945 |
| John Bramhall and the Church of Ireland in the 1630s | McCafferty, John | Article in Book | | 1995 |
| John Bramhall and the reconstruction of the Church of Ireland, 1633-1641 | McCafferty, John | Thesis | | |
| John C. O'Neill : the Irish nationalist and US army officer who invaded Canada | Fox, Thomas | Monograph or Collective Volume | McFarland | 2019 |
| John Daly and the 'Thomas Joseph' | Daly, Eugene | Article in Journal | | 2002 |
| John Daniel, Thomas Conolly and the Erne Fisheries, 1796-1799 | Hayes, Frank | Article in Journal | | 1994 |
| John Derricke, Edmund Spenser, and the white wand of justice and equity | O'Neil, William | Article in Book | | 2021 |
| John Derricke’s The Image of Irelande: with a Discoverie of Woodkarne : essays on text and context | | Monograph or Collective Volume | Manchester University Press | 2021 |
| John Devoy and Jeremiah O'Donovan Rossa | Williams, T. Desmond | Article in Book | | 1968 |
| John Doherty | Boyd, Andrew, 1921- | Article in Book | | 1966 |
| John E. Pigot and Thomas Davis | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1949 |
| John Eliot Caimes, John Stuart Mill and Ireland : some problems for political economy | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Journal | | 1983 |
| John Estrete (fl. 1474-89) : the 'Yorkist' earl of Kildare's 'Lancastrian' lawyer | Jones, Randolph | Article in Book | NA | 2025 |
| John Felton, popular political culture, and the assassination of the duke of Buckingham | Cogswell, Thomas | Article in Journal | | 2006 |
| John fitzThomas, fifth lord of Offaly and first earl of Kildare, 1287-1316 : a study of an Anglo-Irish magnate | Ó Cléirigh, Cormac | Thesis | | 1997 |
| John Hughes, reluctant agent provocateur and millennarian : a note and new documents | Durey, Michael | Article in Journal | | 1992 |
| John Kenny, 1847-1924 | Christ, Frances | Article in Journal | | 2015 |
| John Mitchel | O'Neill, M. | Article in Book | | 1945 |
| John Moore of Columbkill (1809-97) : a Thomastown antiquary | Doyle, Joe | Article in Journal | | 2006 |
| John Murphy and educational publishing in the early nineteenth century | Cronin, Neil | Article in Journal | | 2021 |
| John O'Donovan (1806-1861) : a biography | Boyne, Patricia | Monograph or Collective Volume | | 1987 |
| John O'Donovan and Colonel Larcom | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1945 |
| John O'Donovan and Thomas le Keu: preliminary comments on processes af Anglicisation in Irish surnames | Swift, Catherine | Article in Journal | | 2015 |
| John O'Donovan's Curragh | Costello, Con | Article in Book | | 2006 |
| John O'Mahony | Ryan, Desmond | Article in Book | | 1968 |
| John Ogilby and his Aesop : the fortunes and fables of a 17th century virtuoso | Eames, Marian | Article in Journal | | 1961 |
| John Redmond | Mansergh, Nicholas, 1910-1991 | Article in Book | | 1960 |
| John Rhys, Celtic studies and the Welsh past | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2013 |
| John Ryan polemicist and local historian | King, Thomas, 1955- | Article in Journal | | 1997 |
| John Snow, Thomas Wakley and 'The Lancet' | Froggatt, Peter | Article in Book | | 2002 |
| John Sullivan SJ., 1861 - 1933 : where two traditions meet | Morrissey, Thomas J. | Monograph or Collective Volume | Columba | 2009 |
| John Swiney, the Cork United Irishman : his duel with Thomas Corbett | Ó Coindealbháin, Seán | Article in Journal | | 1955 |
| 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 Tyndall's travels in Ireland, 1865 | Higgins, Kevin | Article in Journal | | 2020 |
| John Walter and the social history of early modern England | Thomas, Keith | Article in Book | Boydell Press | 2017 |
| John Wesley in Cavan and Monaghan in 1778 | Barron, Thomas J. | Article in Journal | | 1980 |
| John's Lane | Butler, Thomas | Monograph or Collective Volume | St John's Priory | 1983 |
| Jonathan Swift and Thomas Sheridan : the 'Intelligencer' | | Monograph or Collective Volume | | 1992 |
| Jones Hughes's Ireland : a literary quest | Andrews, J. H. (John Harwood) | Article in Book | | 1988 |
| Joseph Campbell and the School of Irish Studies at Fordham University, 1928-1932 | Hennessy, Thomas C. | Article in Journal | | 1996 |
| Joseph Dalton, S.J., first Irish Jesuit missionary in Australia | Morrissey, Thomas J. | Article in Journal | | 2000 |
| Joseph Sheridan Le Fanu | Longford, Christine | Article in Journal | | 1942 |
| Joseph Sheridan Le Fanu | Begnal, Michael | Monograph or Collective Volume | Bucknell University Press | 1971 |
| Joseph Sheridan Le Fanu : a centenary memoir | Byrne, Patrick | Article in Journal | | 1973 |
| Joseph Sheridan Le Fanu, 1814-73 | Dagg, T. S. C. | Monograph or Collective Volume | University P. | 1950 |
| Journal of County Clare, 1681 | Dineley, Thomas (Dingley) | Article in Book | | 1998 |
| Journals and memoirs of Thomas Russell 1791-5 | Russell, Thomas, Sir
| Monograph or Collective Volume | Irish Academic Press in association with the Linen Hall Library | 1992 |
| Journals and memoirs of Thomas Russell, 1791-1795 | | Monograph or Collective Volume | | 1991 |
| Journey to reconciliation | Finlay, Finola | Article in Journal | | 2018 |
| Journeys on the edges : the Celtic tradition | O'Loughlin, Thomas | Monograph or Collective Volume | Dalton, Longman and Todd | 2000 |
| Judiciary, police, and the maintenance of order | Molony,Thomas Francis, Sir | Article in Book | | 1912 |
| Justice for Thomas Mooney | Barrow, G. L. | Article in Journal | | 1970 |
| Karl Marx : the materialist messiah | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1984 |
| Kavanagh and after : an ambiguous legacy | Martin, Augustine | Article in Book | | 1996 |
| Kells | Simms, Anngret | Article in Book | | 1994 |
| Kells Priory, Co. Kilkenny : archaeological excavations by T. Fanning and M. Clyne | Clyne, Miriam | Monograph or Collective Volume | Stationery Office | 2007 |
| Kerry's Tenuous connection with the foundation of the Gaelic Athletic Association | O'Sullivan, Donal J. | Article in Journal | | 2010 |
| Kerry, geo-politics and 1916 | Fitzgerald, Thomas Earls | Article in Book | Irish Historical Publications | 2016 |
| Key personalities | Fitzpatrick, Margaret,Hartnett, Eoin,O'Riordan, TomásÓ Corráin, Donnchadh, | Article in Book | | 2011 |
| Kicking with the left foot : being Catholic in Scotland | Reilly, Patrick | Article in Book | | 2000 |
| Kilbrogan Church & Graveyard | Desmond, John | Article in Journal | | 2013 |
| Kilcolgan | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1915 |
| Kildare | Andrews, J. H. (John Harwood) | Article in Book | | 1995 |
| Kildare : history and society : interdisciplinary essays on the history of an Irish county | McGrath, ThomasNolan, William | Monograph or Collective Volume | Geography Publications | 2006 |
| Kildare County Council 1919-1921 | Kenny, Liam | Article in Book | | 2006 |
| Kildare County Council, 1899-1926 | Nelson, Thomas | Thesis | | 2007 |
| Kildare from the documents of conquest : the monastic extents 1540 and the civil survey 1654-1656 | Nolan, William | Article in Book | | 2006 |
| Kildare members of Parliament 1559-1800 | Sadlier, Thomas U. | Article in Journal | | 1917 |
| Kildare members of Parliament, 1559-1800 | Sadlier, Thomas U. | Article in Journal | | 1911 |
| Kildare members of Parliament, 1559-1800 | Sadlier, Thomas U. | Article in Journal | | 1914 |
| Kildare members of Parliament, 1559-1800 | Sadlier, Thomas U. | Article in Journal | | 1921 |
| Kildare members of Parliament, 1559-1800 | Sadlier Thomas U. | Article in Journal | | 1928 |
| Kildare Street Club 1-3 Kildare Street, Dublin | Murphy, Damian | Article in Journal | | 2024 |
| Kilkenny - the faire citie | Bradley, John, 1954-2014 | Article in Book | | 1995 |
| Kilkenny : the struggle for the land, 1850-1882 | Walsh, Walter | Monograph or Collective Volume | Walsh Books | 2008 |
| Kilkenny and the reprieve of Thomas Bourke, Fenian, 1867 | O'Donnell, Michael | Article in Journal | | 1990 |
| KIlkenny apprentices at Bristol, 1532-1545 | O'Brien, Niall C.E.J. | Article in Journal | | 2018 |
| Kilkenny U.S.A. | Halpin, Thomas B. | Article in Journal | | 1994 |
| Kilkenny's titled landowners in 1876 | Halpin, Thomas B. | Article in Journal | | 2006 |
| Kilkerrin in early times | Fahy, Thomas B. | Article in Book | | 2006 |
| Killarney tourist literature of the past | O'Connor, Thomas, of County Kerry | Article in Journal | | 1994 |
| Killerig and district | Clarke, Thomas | Article in Journal | | 1968 |
| Kilmacthomas Union: the administration of Poor Law in a county Waterford workhouse 1851-1872 | Crotty, Ger | Article in Journal | | 2008 |
| Kilmichael Revisited: Tom Barry and the ‘False Surrender | Morrison, Eve | Article in Book | Lilliput Press | 2012 |
| Kilroy's theatre of the conflicted self | Dubost, Thierry | Article in Journal | | 2002 |
| King and commons in Gaelic Ireland | Byrne, Francis John, 1934- | Article in Book | | 1973 |
| King Guaire and Bishop Cellach | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1902 |
| King pawn or black knight? | Thomas, Gwyn | Monograph or Collective Volume | Mainstream | 1995 |
| King, hero and hospitaller in 'Aided Cheltchair Maic Uthechair' | Ó Cathasaigh, Tomás | Article in Book | | 2010 |
| Kingdom in reversion : the Irish viceroyalty of the earl of Wharton, 1708-10 | Dralle, L. A. | Article in Journal | | 1951 |
| Kings and clerics in some Leinster sagas | Davies, Morgan Thomas | Article in Journal | | 1996 |
| Kinship, status and the origins of the hide | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1972 |
| Knights errant | Ryan, John | Article in Book | | 1998 |
| Krone, Hof und Adel in den Ländern der Stuart Dynastie im frühen 17. Jahrhundert | Asch, Ronald G. | Article in Journal | | 1989 |
| L'écriture de l'histoire chez la Jeune Irlande : quelle histoire pour une nation du consensus et de la réconciliation? | Saison, Ghislaine | Article in Book | | 2001 |
| L'Estrange and Brett : a history of the firm, 1796-2007 | Brett, Charles Edward Bainbridge, Sir, 1928-2005,Hewitt, V. A. | Monograph or Collective Volume | L'Estrange & Brett | 2007 |
| L'insertion des réfugiés jacobites dans la société francaise du dix-huitiéme siècle | Dromantin, Patrick Clarke de | Article in Book | | 2006 |
| L'Irlande à l’Époque de la Révolution française | Dickinson, Harry Thomas | Article in Journal | | 2005 |
| La expedición francesa a la bahía de Bantry, Irlanda, 1796 | Bartlett, Thomas | Article in Book | | 2008 |
| La poésie lyrique de Thomas Moore (1779-1852) | Tessier, Thérèse | Monograph or Collective Volume | [s.n.] | 1976 |
| La ville de New York vue par les nationalistes irlandais dans la seconde moitié du XIXe siècle | Saison, Ghislaine | Article in Book | | 2000 |
| Labour and politics in Kerry during the First World War | Crean, Thomas Neilan | Article in Journal | | 1994 |
| Labour and the political revolution | Farrell, Brian | Article in Book | | 1994 |
| Labour and the political revolution | Nevin, Donal | Article in Book | | 1967 |
| Labour aristocracies, triumphalism and melancholy : misconceptions of the Protestant working-class and Loyalist community | Mulvenna, Gareth | Article in Book | | 2015 |
| Labour in waiting : * the after-effects of the Dublin lockout | Lysaght, D.R. O'Connor | Article in Journal | | 2013 |
| Lady Harriet Kavanagh on the route of the Israelites (1846-8) | Jackson, Emmet | Article in Book | | 2015 |
| Ladytown and the Allens | Sadlier, Thomas U. | Article in Journal | | 1921 |
| Lally's finances | Ó hAnnracháin, Eoghan | Article in Journal | | 2013 |
| Lally, the regime's scapegoat | Ó hAnnracháin, Eoghan | Article in Journal | | 2004 |
| Lally, the regime's scapegoat | Ó hAnnracháin, Eoghan | Article in Journal | | 2004 |
| Lamentable intelligence from the Admiralty : [the sinking of HMS Vanguard in 1875] | Thomas, Chris | Monograph or Collective Volume | Nonsuch | 2006 |
| Land holdings and settlement in the Cooley peninsula of Louth | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1961 |
| Land purchase policy in Ireland, 1917-23: from the Irish Convention to the 1923 land act | Sheenan, Joseph Thomas | Thesis | | 1993 |
| Land systems and industrial economy of Ireland, England, and continental countries | Leslie, Thomas Edward Cliffe, 1826-1882 | Monograph or Collective Volume | Longman | 1870 |
| Land tenure in south Kilkenny, c.1800-1850 | Fewer, T. G. (Thomas Gregory) | Thesis | | 1993 |
| Land, politics and society in eighteenth-century Tipperary | Power, Thomas P. | Monograph or Collective Volume | Oxford University Press | 1993 |
| Land, politics and society in eighteenth-century Tipperary | Power, Thomas | Thesis | | 1987 |
| Landholding and settlement in the counties of Meath and Cavan in the nineteenth century | Jones Hughes, Thomas | Article in Book | | 1987 |
| Landlord and tenant relations in Ireland between the famine and the land war 1850-1878 | Vaughan, W. E. | Article in Book | | 1977 |
| Landlordism in the Mullet of Mayo | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1959 |
| Landlords and merchants : Belfast 1600-1750 | Gillespie, Raymond | Article in Book | | 1995 |
| Landowners in Scotland, Ireland and Denmark in the age of improvement | Smout, Thomas Christopher | Article in Journal | | 1987 |
| Landownership in County Waterford c.1640 : the evidence from the civil survey | Ketch, Catherine | Article in Book | | 1992 |
| Landscape and history on the medieval Irish frontier : the kin's cantreds in the thirteenth century | Finan, Thomas | Monograph or Collective Volume | Brepols | 2016 |
| Language and society among the insular Celts A.D. 400-1000 | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1995 |
| Language Policy and Nationalism in Wales : A Comparative Analysis | Thomas, Alys | Article in Journal | | 1997 |
| Language, literature and culture in Ireland since the war | Ó Tuathail, Gearóid | Article in Book | | 1979 |
| Language, personality and the nation | Brennan, Martin | Article in Book | | 1969 |
| Languages of legitimacy? An Ghaeilge, the earl of Thomond and British politics in the Renaissance Pale, 1600-24 | Kane, Brendan | Article in Book | | 2011 |
| Laochra Chogadh na Saoirse i dTiobraid Árann agus an Ghaeilge | Ó Cearnaigh, Seán | Article in Journal | | 2013 |
| Lapsed member and penitent convert : reformation, liturgy and conversion in Ireland in the 1690s | Power, Thomas P. | Article in Book | | 2016 |
| Larcom the cartographer: political economy in pre-Famine Ireland | McWilliams, Patrick | Article in Journal | | 2008 |
| Larkin, Connolly, and the Labour movement | MacLysaght, Edward | Article in Book | | 1967 |
| Last flight of the Wild Geese? Bonaparte's Irish Legion, 1803-15 | Bartlett, Thomas | Article in Book | | 2006 |
| Late Viking age settlement in Waterford city | Hurley, Maurice | Article in Book | | 1992 |
| Latin and the vernacular languages : The creation of a bilingual textual culture | Orchard, Andy | Article in Book | | 2003 |
| Latin poetry in Ireland | Byrne, Francis John, 1934- | Article in Book | | 1965 |
| Laurence O'Neill (1864-1943), Lord Mayor of Dublin (1917-1924) : patriot and man of peace | Morrissey, Thomas J. | Monograph or Collective Volume | Dublin City Council | 2014 |
| Law in a republic | Bacik, Ivana | Article in Book | | 2005 |
| Law in Dundalk in 1719 | Anonymous | Article in Journal | | 1944 |
| Law without loyalty - the abolition of the Irish appeal to the Privy Council | Mohr, Thomas | Article in Journal | | 2002 |
| Lawyers and chroniclers | Binchy, D. A. (Daniel Anthony), 1900-1989 | Article in Book | | 1961 |
| Leaca and Gaelic inauguration ritual in Medieval Ireland | FitzPatrick, Elizabeth | Article in Book | | 2003 |
| Leaders and workers | | Monograph or Collective Volume | Mercier Press | 1965 |
| Leamanach and Dromoland : the O'Brien Ambition Part II. 'Obliges, me to dip my Hands in Mortar' : Catherine O'Brien's influence at Dromoland | O'Kane, Finola | Article in Journal | | 2004 |
| Lebor na Cert and clientship | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2013 |
| Legal aspects of the 1798 rising, its suppression and the aftermath | Osborough, W. N. (William Nial) | Article in Book | | 2003 |
| Legal nationalism : the case of Lord Cooper | MacQueen, Hector L. | Article in Book | | 2006 |
| Leisure and the Irish in the Nineteenth Century | | Monograph or Collective Volume | Liverpool University Press | 2016 |
| Leonardo da Vinci 1452-1952 | MacGreevy, Thomas | Article in Journal | | 1954 |
| Les irlandais et la bataille de Carillon | Chapais, Thomas | Article in Journal | | 1911 |
| Lessons in medical politics : Thomas Wakley and the Irish medical charities, 1827-1839 | Cassell, R. D. | Article in Journal | | 1990 |
| 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 |
| Letter from Samuel Pelan to his son Thomas Rutherford Pelan | Pelan, Samuel | Article in Journal | | 1984 |
| Letter to John Vesey, bishop of Tuam, July 1711 | Ó Murchadha, Ciarán | Article in Journal | | 2008 |
| Letter to Murray of Broughton | Addi, Thomas | Article in Journal | | 1979 |
| Letter-book of the earl of Clanricarde, 1643-47 | | Monograph or Collective Volume | | 1983 |
| Letterbook of Greg and Cunningham, 1756-57 : merchants of New York and Belfast | | Monograph or Collective Volume | Oxford University Press for the British Academy | 2001 |
| Letterkenny's Garden of remembrance | Bourke, Wesley | Article in Journal | | 2013 |
| Letters from camp; John Thomas Stanley to John Baker Holroyd, January-October 1797 | | Article in Journal | | 1953 |
| Letters from Dublin, Easter 1916 : Alfred Fannin's diary of the Rising | Fannin, Thomas Alfred, 1874-1939Warwick-Haller, AdrianWarwick-Haller, Sally | Monograph or Collective Volume | Irish Academic Press | 1995 |
| Letters from James Fintan Lalor in Limerick | | Article in Journal | | 1952 |
| Letters of Edward FitzGerald | | Monograph or Collective Volume | | 1960 |
| Letters of John Mitchel, 1848-1869 | Connors, Thomas G. | Article in Journal | | 1998 |
| Letters of the late Thomas Rundle ... lord bishop of Derry in Ireland, to Mrs. Barbara Sandys, of Miserden, Glocestershire. 2 vols. | | Monograph or Collective Volume | | 1789 |
| Letters on the condition of the people of Ireland | Foster, Thomas Campbell, 1813-1882 | Monograph or Collective Volume | | 1846 |
| Letters to Benjamin Franklin from Irish officers offering to serve the United States | Ferguson, Kenneth | Article in Journal | | 2021 |
| Liberal Catholic ideology: an exposition of the political catechism by Thomas Wyse | Heggs, Elizabeth | Article in Journal | | 2007 |
| Libraries in Ireland | Clarke, DesmondO'Neill, Thomas Patrick | Article in Journal | | 1955 |
| Lick Hill 'Cave' and its inscriptions | Kearney, TerriUngood Thomas, Jasper | Article in Journal | | 2014 |
| Life and Letters of Thomas Drummond | O'Brien, R. B. | Monograph or Collective Volume | | 1889 |
| Life and times of Thomas Joseph Condon: one of Clonmel's most illustrious sons, 1850-1943 | Ahern, Michael | Monograph or Collective Volume | Ardo Books | 2019 |
| Life in Tudor Limerick: William Good's 'Annual Letter' of 1566 | Houliston, VictorMcCoog, Thomas M. | Article in Journal | | 2016 |
| Life in Wicklow a century ago... 1921 | Finlay, John | Article in Journal | | 2021 |
| Life of Sir John T. Gilbert ... Irish historian and archivist, vice-president of the Royal Irish Academy, secretary of the Public Record Office of Ireland | Gilbert, R. M. (Rosa Mulholland) | Monograph or Collective Volume | | 1905 |
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| List of the absentees of Ireland | Prior, Thomas | Article in Book | | 1860 |
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| Living standards | Cassells, Peter | Article in Book | | 1986 |
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| Local elections and national politics | Coakley, John | Article in Book | | 2001 |
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| Local government in Northern Ireland 1920-73 | Jackson, Alvin | Article in Book | | 2001 |
| Local government in Northern Ireland : a town clerks perspective | Hayes, Maurice | Article in Book | | 2001 |
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| Londonderry and the London Companies, 1609-1629 : being a survey and other documents submitted to King Charles I by Sir Thomas Phillips | Public Record Office of Northern Ireland | Monograph or Collective Volume | | 1928 |
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| Long-term trends in top income shares in Ireland | Nolan, B. | Article in Book | | 2007 |
| Longas Macc nUisnig | Quin, E. G. | Article in Book | | 1959 |
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| Malthus on Emigration and Colonization : Letters to Wilmot-Horton | Ghosh, R. N. | Article in Journal | | 1963 |
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| Margaret McNair Stokes (1832-1900): negotiating cultural values within nineteenth-century Irish antiquarian discourse | NicGhabhann, Niamh ; Thomas, Colleen M. | Article in Journal | | 2020 |
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| Marking thirty years of diplomatic relations between Ireland and China | Kelleher, Declan | Article in Book | | 2009 |
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| Master of the hounds and 'Father of the Turf': Tom Conolly and his equine exploits | McCarthy, Patricia | Article in Journal | | 2017 |
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| Meagher memorabilia on display at the Waterford museum of treasures | Hearne, John M.McEneaney, Eamonn | Article in Book | | 2006 |
| Meagher to Leonard July, 1849. Thomas Francis Meagher's last letter written in Ireland and some new information pertaining to the origin of the Irish tricolour | Hearne, John M. | Article in Journal | | 2009 |
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| Medieval hagiography : an anthology | | Monograph or Collective Volume | Routledge | 2001 |
| Medieval Limerick : the growth of two towns | O'Rahilly, Celie | Article in Book | | 1995 |
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| Medieval papal letters : a source for local history | O'Loughlin, Thomas | Article in Journal | | 1993 |
| Medieval settlement hierarchy in Carlow and the 'Carlow corridor', 1200-1550 | Doran, Linda | Article in Book | | 2008 |
| Medieval settlement in north Roscommon, c. 1200AD-c. 1350AD | Finan, ThomasO'Conor, Kieran | Article in Book | | 2018 |
| Medieval Thurles : origins and development | Empey, C. A. (Adrian) | Article in Book | | 1989 |
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| Memoirs | Holt, Joseph, 1756x9-1826 | Monograph or Collective Volume | [s.n.] | 1838 |
| Memoirs of his own life and times. By Sir James Turner. MDCXXXII-MDCLXX. From the original manuscript | Turner, James, Sir
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| Memoirs of Laetitia Pilkington | | Monograph or Collective Volume | University of Georgia Press | 1997 |
| Memoirs, Journal and Correspondence of Thomas Moore. 8 vols. | | Monograph or Collective Volume | | 1853 |
| Memoriam: Thomas Kenneth Whitaker. 42nd President of the Statistical and Social Inquiry Society of Ireland (1968-1971) | | Article in Journal | | 2017 |
| Memories in focus : N. E. Ulster from old photographs, 1850-1950 | | Monograph or Collective Volume | Second Coleraine Company Boys Brigade Old Boys' Silver Band | 1982 |
| Memories of Mr Holden | Devlin, Madeline | Article in Journal | | 2010 |
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| Mercantilism and Ireland, 1620-40 | Kearney, H. F. | Article in Book | | 1958 |
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| 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 Collins and the Civil War | Dwyer, T. Ryle (Thomas) | Article in Book | | 2017 |
| Michael Collins's famous speech and the advent of the Republic of Ireland | Vermeulen, Saskia | Article in Journal | | 2024 |
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| Michael Cusack's prairie fire and athletics in Thurles and Moycarkey-Borris | Tobin, J,M, | Article in Journal | | 2017 |
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| Michael Healy : personal reminiscences | MacGreevy, Thomas | Article in Journal | | 1944 |
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| Michael O'Clery | MacGreevy, Thomas | Article in Journal | | 1944 |
| Michael O'Riordan's 'La recente insurrezione in Irlanda, 1916' | Greene, Thomas R. | Article in Journal | | 1993 |
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| Míchéal Ó Mealláin | Ó Mealláin, Séamus | Monograph or Collective Volume | Coiscéim | 2012 |
| Mickeen Cullins - Ireland's forgotton hero of Messines | Dillon, Thomas | Article in Journal | | 2017 |
| Mid-eighteenth-century Irish marriage as portrayed in The Bordeaux-Dublin letters | Truxes, Thomas M. | Article in Book | | 2019 |
| Mid-nineteenth century Thurles : the visual dimension | Condon, James | Article in Book | | 1989 |
| Middlemen | Dickson, David | Article in Book | | 1979 |
| Migrant labour in British agriculture in the nineteenth century | Collins, Edward John Thomas | Article in Journal | | 1976 |
| Migration and economic growth : a study of Great Britain and the Atlantic economy | Thomas, Brinley | Monograph or Collective Volume | | 1954 |
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| Migration and upward mobility : the Meagher family in Ireland and Newfoundland, 1780-1830 | Mannion, John | Article in Journal | | 1988 |
| Migration since 1914 | Daly, Mary E. | Article in Book | | 2018 |
| Miles Byrne : United Irishman, Irish exile and "Beau Sabreur" | Bartlett, Thomas | Article in Book | | 1996 |
| Milestones in Irish history | | Monograph or Collective Volume | Mercier Press in collaboration with Radio Telefís Éireann | 1986 |
| Militant Ireland | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Book | | 1964 |
| Militarism in Ireland, 1900-1922 | Fitzpatrick, David | Article in Book | | 1996 |
| Militarization and politicization in Ireland, 1780-1820 | Bartlett, Thomas | Article in Book | | 1991 |
| Milk Symbolism in the Bethu Brigte | Torma, Thomas | Article in Journal | | 2004 |
| Millennial vision ... Thomas Russell re-assessed | Gray, John | Article in Journal | | 1989 |
| Ministers and mines : religious conflict in an Irish mining community, 1847-1858 | Power, Thomas P. | Monograph or Collective Volume | iUniverse | 2014 |
| Minnesota pioneers and the Carlow connection | Byrne, Thomas J. | Article in Journal | | 2001 |
| Miracle rescue of Portlaoise couple from Lusitania sinking in 1915 | Fennelly, Teddy
| Article in Journal | | 2014 |
| Miscellanea : a nineteenth century description of Kilpeacon church | Irwin, Liam | Article in Journal | | 2000 |
| Miscellanea : discovery of a tomb at Thomastown, county Kilkenny | Phelan, Margaret M. | Article in Journal | | 1997 |
| Miscellaneous : 1920 : Bloody Sunday | Bourke, MarcusGaynor, Willie | Article in Journal | | 2006 |
| Miscellany. I The origins of Irish penetential descipline | Oakley, Thomas P. | Article in Journal | | 1933 |
| Misplaced hospitality and practical implications: the northern tour of Thomas Sandby and Theodosius Forrest, August 1774 | Bristol, Kerry | Article in Book | | 2023 |
| Miss Smith comes to Tipperary | Girouard, Mark | Article in Book | | 1992 |
| Mission or Church, 1570-1640? | McCoog, Thomas M. | Article in Book | | 2023 |
| Mission to a suffering people : Irish Jesuits 1596-1696 | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2021 |
| Missionary Activity and Religious Houses | Binasco, Matteo ; Thomas, Hannah | Article in Book | Oxford University Press | 2023 |
| Mitchel on Meagher | Mitchel, John | Article in Book | | 1945 |
| Mixed marriage : Sheridan, Macklin, and the hybrid audience | Harris, Susan Cannon | Article in Book | | 2007 |
| Moated sites in county Roscommon, Ireland : a statistical approach | Thomas, Finan | Article in Journal | | 2014 |
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| Modalités d'une négociation : le trèfle et la faucille chez Thomas McGrath (1916-1990) | Dussol, Vincent | Article in Journal | | 2004 |
| Modern poetry in Irish, 1940-1970 | Mac Giolla Léith, Caoimhín | Article in Book | | 1996 |
| Modernity, the past and politics in post-war Ireland | Delaney, Enda | Article in Book | | 2011 |
| Monalty House, Carrickmacross, Co. Monaghan | Hughes,Alan | Article in Journal | | 2022 |
| Monasterevan | Horner, Arnold | Article in Book | | 1995 |
| Monasteries and manuscripts : the transmission of Latin learning in early medieval Ireland | O'Loughlin, Thomas | Article in Book | | 2001 |
| Monastic dress and the appearance of sanctity: the evangelists' shoes | Thomas, Colleen M. | Article in Book | | 2017 |
| 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 Thomas Aquinas Quirke | Crowley, SeamusO'Connor, Jim | Article in Journal | | 1998 |
| Monument to Sir Thomas Cusack | Hickey, Elizabeth | Article in Journal | | 1971 |
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| Moore to Hobhouse : an unpublished letter | Booth, Bradford A.Moore, Thomas | Article in Journal | | 1940 |
| Moore's centenary: music and politics in Dublin 1879 | McHale, Maria
| Article in Journal | | 2009 |
| Moore's claim as Anglo-Irish national poet | Stockley, W. F. P. | Article in Journal | | 1939 |
| Moore's Irish melodies | Travis, James | Article in Journal | | 1944 |
| Moore's Irish melodies | Diskin, Patrick | Article in Journal | | 1960 |
| Moore's Melodies and the paper maker | | Article in Journal | | 1942 |
| Moore's Oriental Artifice: Mughal history, Irish antiquarianism and romance in Lalla Rookh | Roberts, Daniel Sanjiv | Article in Book | | 2018 |
| Moore's Romantic Neoclassicism | Larrissy, Edward | Article in Book | | 2018 |
| Moore, Stevenson, Bishop and the Powers: A series of complex relationships | Hunt, Una | Article in Book | | 2018 |
| Moran of the 'Leader' and Ryan of the 'Irish Peasant' | Inglis, Brian | Article in Book | | 1960 |
| More Irish country towns | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1995 |
| More than a token gift - Bishop Croke's 'toke pounamu' | Gilhooly, BernardMulhall, Isabella | Article in Journal | | 2020 |
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| Mount Juliet, Kilmurry and the Carricks | Butler, Hubert | Article in Journal | | 1987 |
| Moving titles of a Young Ireland text : Davis, Duffy, McGee and the origins of Tiocfaidh ár lá | Lambkin, Brian | Article in Book | | 2005 |
| Mr de Valera drafts a constitution | Fanning, Ronan | Article in Book | | 1988 |
| Mr Whitaker and Northern Ireland policy from 1959 to 1972 | McCann, David | Article in Journal | | 2012 |
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| Mugwump cartoonists, the papacy, and Tammany Hall in America'a gilded age | Thomas, Samuel J. | Article in Journal | | 2004 |
| Muintir Chiarraí agus Craobh an Chéitinnigh. Kerry connections with the Keating Branch of the Gaelic League, 1901-1916 | MacDiarmada, Mary | Article in Journal | | 2023 |
| Muirchú's 'Vita Patricii' : a note on an unidentified source | O'Loughlin, Thomas | Article in Journal | | 1996 |
| Muirchu's poisoned cup : a note on its sources | O'Loughlin, Thomas | Article in Journal | | 2006 |
| Muirchú’s theology of conversion in his Vita Patricii | O'Loughlin, Thomas | Article in Book | | 2002 |
| Mullingar | Andrews, J. H. (John Harwood) | Article in Book | | 1994 |
| Multiple Crossings : Thomas Devyr and the American Fate of British Agrarianisms | Huston, John Reeve | Article in Book | | 2004 |
| Murder at Knocknamuckley | Dixon, Terence | Article in Journal | | 2019 |
| Murder or manslaughter? A 1739 decision of the Irish King's Bench | Osborough, W. N. (William Nial) | Article in Journal | | 2004 |
| Murphy of Gragara and Castle Annaghs | Hoyne, Thomas | Article in Journal | | 1968 |
| Music | McHale, Maria | Article in Book | | 2011 |
| Music and broadcasting | Ó Broin, Eimear | Article in Book | | 1998 |
| Music and dancing at Castletown, County Kildare, 1759-1821 | Mullaney-Dignam, Karol | Monograph or Collective Volume | Four Courts | 2011 |
| Music and the institutions | Ryan, Joseph J. | Article in Book | | 1998 |
| Music education in the emergent nation state | McCarthy, Marie | Article in Book | | 1998 |
| Music in Ireland : performance in music education | Heneghan, Frank | Article in Book | | 1998 |
| Music in Ireland, 1848-1998 (Thomas Davis Lecture Series) | | Monograph or Collective Volume | Mercier Press, in association with Radio Telefís Éireann | 1998 |
| Music in Ireland, 1848-1998: an overview | Pine, Richard | Article in Book | | 1998 |
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| Mutiny or subversion : Spithead and the Nore | Rodger, N. A. M., 1949- | Article in Book | | 2003 |
| My earliest Irish friends | O'Brien, Mrs William (O'Brien, Sophie Raffalovich, 1860-1960) | Article in Journal | | 1949 |
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| My feelings about Ireland, Irish nationalists and Ulster unionists | Utley, Thomas L. | Article in Book | | 1986 |
| My green age | MacDonagh, Thomas | Monograph or Collective Volume | Poolbeg | 1986 |
| My Nation: the transatlantic vision of Thomas Flanagan | O'Connell, Shaun | Article in Journal | | 2013 |
| My Power / Fortescue ancestors | Burke, Thomas A. | Article in Journal | | 2016 |
| My scholarly and sagacious friend | Flanagan, Thomas | Article in Book | | 1998 |
| My Uncle Frank | Bodkin, Thomas Patrick, 1887-1961 | Monograph or Collective Volume | Hale | 1940 |
| Myths, magic and the middle ages : Dublin from its beginning to 1577 | Clarke, Howard B. | Article in Book | | 1995 |
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| Negotiating public history in the Republic of Ireland : collaborative, applied and usable practices for the profession | Cauvin, ThomasO'Neill, Ciaran | Article in Journal | | 2017 |
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| Negotiating the Belfast agreement | Hennessey, Thomas | Article in Book | | 2009 |
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| New Wave 1 : 'A rising tide'; Irish poetry in the 60s | Goodby, John | Article in Book | | 1996 |
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| Now and in time to be : Ireland and the Irish | Keneally, Thomas | Monograph or Collective Volume | Ryan Publishing | 1991 |
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| One man' flying column. Parts 1-2 | Ryan, Thomas | Article in Journal | | 1992 |
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| Ordnance survey of the county of Londonderry. 1 : Memoir of the city and north-western Liberties of Londonderry. Parish of Templemore | Anonymous | Monograph or Collective Volume | | 1837 |
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| Ormond and Strafford, pupil and mentor? | Kelly, W. P. (William P.) | Article in Journal | | 1997 |
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| Osmond Esmonde's Dominion odyssey: Irish nationalism in the British Empire 1920-21 | Lynn, Shane | Article in Journal | | 2014 |
| Our Irish ancestry : American Augustinians, the heirs of Rome and Ireland | Roland, Thomas F. | Article in Book | | 1956 |
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| Our man in Rome : Peter Lombard, agent of the University of Louvain, at the grand theatre of European politics, 1598-1612 | Boute, Bruno | Article in Book | | 2010 |
| Our war : Ireland and the Great War | | Monograph or Collective Volume | Royal Irish Academy | 2008 |
| Our war, our history | Horne, John | Article in Book | | 2008 |
| Out of Ireland into the Union Army : the battle over Irish emigration | Ryan, Thomas J. | Article in Journal | | 2002 |
| Out of the maze | Davidson, Noel I. | Monograph or Collective Volume | Ambassador | 2000 |
| Out of Ulster 1 : Louis MacNeice and his influence | Longley, Edna | Article in Book | | 1996 |
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| Pacata Hibernia : Ireland appeased and reduced, or a historie of the late warres of Ireland, especially in the province of Munster under the command of Sir George Carew | [Stafford, Thomas] | Monograph or Collective Volume | | 1633 |
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| Paddy Healy : a rare peace of mind | Goodbody, Rob | Article in Book | | 1998 |
| Pádraig Mac Gamhna, Paddy Bergin and Labour in Carlow | Devine, Francis | Article in Book | | 2008 |
| Pádraig Ó hÉailidhe/Patrick Healy : published and unpublished work | Ireland, Aideen | Article in Book | | 1998 |
| Paine and Ireland | Dickson, David | Article in Book | | 1993 |
| Paint and politics - an 'unhealthy intersection. The fate of Sir John Lavery's 'Irish history paintings' exhibited at the Irish Race Congress in Paris in January 1922 | Shortall, Billy | Article in Journal | | 2022 |
| Painting the Flight. "The artist overlooked" | Ryan, Thomas | Article in Journal | | 2006 |
| Painting the Flight. "The artist overlooked" | Ryan, Thomas | Article in Journal | | 2006 |
| Painting, Politics and Propaganda | O'Regan, Maebh | Article in Journal | | 2008 |
| Paintings at Adare 'abbey', County Limerick | Westropp, Thomas Johnston | Article in Journal | | 1915 |
| Pairlement Chloinne Tomáis | | Monograph or Collective Volume | Institute for Advanced Studies | 1981 |
| Pairlement Chloinne Tomáis | | Article in Journal | | 1912 |
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| Pallace Row. Part 1 | Kelly, Thomas | Article in Journal | | 1941 |
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| Palladius, Prosper and Leo the Great : mission and primatial authority | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1993 |
| Panic at MacDermot's feast. Archaeological investigations seek evidence for a tragic event on Lough Key Island | Finan, ThomasSchryver, James G. | Article in Journal | | 2021 |
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| Papers relating to Thomas Wentworth, first Earl of Strafford. From the mss. of Dr William Knowler | | Article in Book | | 1895 |
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| Parnell's funeral | Brophy, Thomas J. | Article in Journal | | 2001 |
| Parnell: from landlord of Avondale to MP for Meath | Lawlor, David | Article in Journal | | 2011 |
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| Partition | Fanning, Ronan | Article in Book | | 1986 |
| Partition : the Ulster question (1916-1926) | Wall, Maureen (née Mac Geehin) | Article in Book | | 1968 |
| Partition in Ireland, India and Palestine : Theory and Practice | Fraser, Thomas Grant | Monograph or Collective Volume | Macmillan | 1984 |
| Partition in Ireland, India and Palestine : Theory and Practice | Fraser, Thomas Grant | Monograph or Collective Volume | | 1984 |
| Partners in struggle : the women of 1798 | Cullen, Mary | Article in Book | | 1998 |
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| Patristic background to medieval Irish ecclesiastical sources | McNamara, Martin | Article in Book | | 1995 |
| Patron of partition : Bishop Thomas Quinlan, 1896-1970 | McHale, Conor | Monograph or Collective Volume | Rednal | 1995 |
| Patronage and purchase in the Irish standing army under Thomas Wentworth, earl of Strafford, 1632-1640 | Hardacre, P. H. | Article in Journal | | 1989 |
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| Peadar Ó Conaill, Scoláire agus Scríobhaí (1755-1826) | Ní Dheá, Eilís | Article in Book | | 2000 |
| Pearse's legacy : the partition of Ireland | Hennessey, Thomas | Article in Book | | 2009 |
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| Penal era and golden age : essays in Irish history, 1690-1800 | | Monograph or Collective Volume | Ulster Historical Foundation | 1979 |
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| Perceptions of pagan and Christian : from Patrick to Gregory the Great | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2016 |
| Peregrinatio and transculturalism in the Regensburger Schottenlegende | Poser, Thomas | Article in Book | | 2017 |
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| 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 |
| Piecing together a shattered past : the historical writings of the United Irish exiles in America | Burke, Martin J. | Article in Book | | 1993 |
| Pietas Austriaca and ‘Dispensers of Royal Authority’: The early Irish Colleges and Habsburg cultural strategies | Downey, Declan M. | Article in Book | | 2018 |
| Piggybacking Hewetson's Baldwin monument from Rome to Trinity College, Dublin, in 1784 | McDonnell, Joseph | Article in Book | | 2011 |
| Pilgrim souvenirs | Spencer, Brian | Article in Book | | 1988 |
| Pilib Ministir and the Beresford-Mundey manuscript | Flahive, Joseph J. | Article in Book | | 2010 |
| Pioneers in penology : the reformers, the institutions, and the societies, 1557-1900 | | Monograph or Collective Volume | Edwin Mellen Press | 2006 |
| Piracy and poverty : aspects of the Irish Jacobite experience in France, 1691-1720 | Bracken, David | Article in Book | | 2001 |
| Pitying the plumage : commemorating 'the flight of the earls' in contemporary and historical contexts | Brady, Ciaran | Article in Book | | 2010 |
| Place and people into poetry | MacMahon, Bryan | Article in Book | | 1973 |
| Placenames and change in the Irish landscape | O'Flanagan, Patrick | Article in Book | | 1986 |
| Placenames in the Antartic after Thomas Crean of Annascaul | Headland, R. K. | Article in Journal | | 1992 |
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| Plantation and the manor of Pellipar, part 2 | Hasson, Seamus | Article in Journal | | 1999 |
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| Platform. Remembering the First World War, Ireland and historians | O'Loughlin, Thomas
| Article in Journal | | 2016 |
| Platforms : the journals, the publishers | Roche, Anthony | Article in Book | | 1996 |
| Players and painted stage : aspects of the twentieth century theatre in Ireland | | Monograph or Collective Volume | New Island | 2004 |
| Plays and controversies | Grene, Nicholas | Article in Book | | 2004 |
| Pleasant Ned Lysaght, poet, wit, songwriter and barrister (1763-1809) | O'Connell, Gerald | Article in Book | | 2000 |
| Plunkett and MacDonagh | McDonagh, Donagh | Article in Book | | 1967 |
| Poems of Blathmac, son of Cú Brettan | Carney, James Patrick, 1914-1989 | Article in Book | | 1965 |
| Poet Lizzie Twigg's Kilmacud connections | Igoe, Vivien | Article in Journal | | 2020 |
| Poet of a single poem, Brian Merriman (c.1749-1805) | Ó Dálaigh, Brian | Article in Book | | 2000 |
| Poetry | Burke, Tom | Article in Journal | | 2008 |
| Poets and patronage under Falkland and Wentworth: the commendatory verses to Richard Bellings's 'Arcadia' (1624) and James Shirley's 'The Royal Master' (1638) | McGrath, Bríd | Article in Journal | | 2021 |
| Poff and Barrett: The Road to Justice | Murphy, Janet; Flynn, Jeremiah; Roche, John | Article in Journal | | 2024 |
| Points Critical : Russia, Ireland, and Science at the Boundary | Gordin, Michael D. | Article in Journal | | 2009 |
| Policeman shot and wounded in Ballyduff on the night of 31st October/1st November 1920, was involved in the Listowel Police Mutiny nineteen weeks earlier | O'Connor, Noel | Article in Journal | | 2003 |
| Policy and propaganda in Hugh O'Neill's connection with Europe | Morgan, Hiram | Article in Book | | 2010 |
| Political activity in Cappoquin in the 1840s : Michael Cavanagh's obituary of Hugh Collender | Overlander, Thomas F.Ó Macháin, Pádraig | Article in Journal | | 2001 |
| Political culture in contemporary Meath, 1977-2010 | Wilson, Thomas M. | Article in Book | | 2015 |
| Political economy : from nation building to stagnation | Brownlow, Graham | Article in Book | | 2009 |
| Political economy and colonial Ireland : the propagation and ideological functions of economic discourse in the nineteenth century | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Monograph or Collective Volume | Routledge | 1992 |
| Political ethnographies and historical narratives in eighteenth-century Ireland, 1690-1766 : situating Charles O'Conor of Belanagare | Dwyer, MacDara Thomas | Thesis | | 2015 |
| Political formations in the pre-first world war Ireland : the politics of the lost generation and the cult of Tom Kettle | O'Callaghan, Margaret | Article in Book | | 2010 |
| Political funerals and the realisation of Irish independence, 1847-1929 | Brophy, Thomas J. | Thesis | | 2004 |
| Political priests: the Parnell split in Meath | Lawlor, David | Article in Journal | | 2010 |
| Political propaganda in the 1923 General Election : methods and themes | Callinan, Elaine | Article in Book | | 2023 |
| Political women and reform in Tudor Ireland | Brady, Ciarán | Article in Book | | 1991 |
| Politicization and paramilitarism : north-west and south-west Ulster c.1772-98 | Mac Suibhne, Breandàn | Article in Book | | 2003 |
| Politics and change | Farrell, Brian | Article in Book | | 1986 |
| Politics and society in post-independence Ireland | Boylan, Thomas A.Curtin, ChrisO'Dowd, Liam | Article in Book | | 1988 |
| Politics and society in Wales, 1840-1922 : essays in honour of Ieuan Gwynedd Jones | NA | Monograph or Collective Volume | NA | 1988 |
| Politics and the cinematograph. The Boer War and the funeral of Thomas Ashe | Condon, Denis | Article in Journal | | 2008 |
| Politics, bands and marketing : army recruiting in Waterford city, 1914-15 | Dooley, Thomas P. | Article in Journal | | 1991 |
| Politics, economy and society in the Irish Free State 1922–39 | Dolan, Anne | Article in Book | | 2018 |
| Politics, economy, society: Northern Ireland 1920–1939 | Riordan, Susannah | Article in Book | | 2018 |
| 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, family and war: the career of Thomas Butler, earl of Ossory 1634-1680 | Jordan, Daniel | Thesis | | 2011 |
| 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, land and rural conflict in county Waterford, c.1830-1845 | Kiely, Maurice B.Nolan, William | Article in Book | | 1992 |
| Politics, reform and the New York city election of 1886 | Condon, Thomas J. | Article in Journal | | 1960 |
| Popular culture in Ireland, 1880–2016 | Rouse, Paul | Article in Book | | 2018 |
| Population growth and the Irish economy | Drake, Michael | Article in Book | | 1969 |
| Population in County Kildare - change, contrast and challenges | Gorry, David | Article in Book | | 2006 |
| Portrait of a Young Irelander Thomas Davis (1814-1845) | Ryan, Mary Stratton | Article in Journal | | 2017 |
| Portumna and the Burkes | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1909 |
| Post-Famine landlords of the Flurry Valley | Johnston, Don | Article in Journal | | 2011 |
| Potatoes, poverty and the Irish peasantry: a history of the potato in the Irish diet, c.1590-1900 | O'Riordan, Thomás Anthony | Thesis | | 1998 |
| Potter's College Dun Laoghaire - a tribute to Thomas R. Potter | McGovern, Ada | Article in Journal | | 2006 |
| Poverty and famine in County Kildare, 1820-1850 | Kiely, Karel | Article in Book | | 2006 |
| Poverty and patronage : responses to the Famine on the Duke of Devonshire's Lismore estate | Fewer, T. G. (Thomas Gregory) | Article in Book | | 1995 |
| Power and communication : Thomas Wentworth and government at a distance during the Personal Rule, 1629-1635 | Merritt, Julia F. | Article in Book | | 1996 |
| Power and politics in Galway, 1770-1830 | Murtagh, Thomas Michael | Thesis | | 1983 |
| Power, prerogative, and the politics of Sir Thomas Wentworth in early Stuart England and Ireland | Empey, Mark | Article in Journal | | 2022 |
| POWs and Internees. Collecting for prisoners in 1916 | Patterson, Tony | Article in Journal | | 2021 |
| Pre and post-famine landscape change | Whelan, Kevin | Article in Book | | 1995 |
| Pre-Norman grave slabs and cross-inscribed stones in the Dublin region | Healy, Patrick Thomas, 1916-2000 | Monograph or Collective Volume | South Dublin Libraries : Local Studies Section | 2009 |
| Preface | Póirtéir, Cathal | Article in Book | | 1998 |
| Prelude to the Tudor conquest: Henry VIII and the Irish expedition of Thomas Howard, earl of Surrey, 1520-22 | Ellis, Steven G. | Article in Journal | | 2023 |
| Prequels: the Irish European diaspora | O'Connor, Thomas | Article in Book | | 2019 |
| Presbyterianism and imagination in modern Scotland | Crawford, Robert | Article in Book | | 2000 |
| Presentation convent, Thurles, 1817-1917 | Liguiro, M. | Article in Book | | 1989 |
| President Cosgrave's last administration | Nowlan, Kevin B. | Article in Book | | 1967 |
| President Woodrow Wilson and the Irish question | Hopkinson, Michael | Article in Journal | | 1993 |
| Primary education in Ireland, 1897-1990 | Walsh, Thomas, 1976- | Monograph or Collective Volume | Peter Lang | 2012 |
| Primate Robinson and Rokeby Hall Estate | Young, Jean | Article in Journal | | 2016 |
| Prince of spies | Cole, J. A. | Monograph or Collective Volume | Faber | 1984 |
| Printed propaganda from the Waterford press of Thomas Bourke, 1643-1644 | Brady, Fergus | Article in Journal | | 2013 |
| Printers of the past | O'Neill, Thomas Patrick | Article in Journal | | 1952 |
| Printing Carton : the 2nd Duke of Leinster, Thomas Roberts and William Ashford | Laffan, WilliamRooney, Brendan | Article in Book | | 2014 |
| Private correspondence of Chesterfield and Newcastle, 1744-1746; Pt.1 Chesterfield at the Hague; Pt.2 Chesterfield at Dublin | | Monograph or Collective Volume | | 1930 |
| Private sessions of second Dáil : minutes of proceedings, 18 August 1921 to 14 September 1921 and report of debates 14 December 1921 to 6 January 1922 = Suíonna príobhaideacha an dara Dáil : miontuairiseí na nimeachtaí 18 Lúnasa 1921 go 14 Meán Fómhair 1921 agus tuairisc na ndíospóireachtaí 14 Nollaig 1921 go 6 Eanáir 1922 | | Monograph or Collective Volume | The Stationery Office | 1972 |
| Private Shaw and Public Shaw : a dual portrait of Arabia and G.B.S. | Weintraub, Stanley, 1929- | Monograph or Collective Volume | Cape | 1963 |
| Privates Thomas and John Messitt 2nd battalion Royal Dublin Fusiliers | Messitt, Bertie | Article in Journal | | 2001 |
| Problematizing Primitivism: Contesting Antiquarianism in Moore's Irish Melodies | Rooney, Sheila | Article in Book | | 2018 |
| Problems with databases and the XML solution | Clancy, DenisKeating, John G.Lyons, Mary AnnO'Connor, Thomas | Article in Journal | | 2004 |
| Proceedings in the matter of the custom called tolboll, 1308 and 1385 : St Thomas' abbey v. some early Dublin brewers, &c. | Berry, H. F. | Article in Journal | | 1910 |
| Professor Hugh Ryan (1873-1931) | Dillon, T. | Article in Journal | | 1946 |
| Professor T.P. O’Neill, a personal tribute | Tobin, Lois | Article in Journal | | 1996 |
| Professor Thomas Fanning, 1933-1993 | R., E. | Article in Journal | | 1993 |
| Professor Thomas P. O’Neill. [Obituary] | De Valera, Terry, 1922-2007 | Article in Journal | | 1996 |
| Progress in Irish printing | Thom, A. | Monograph or Collective Volume | Thomas | 1936 |
| Prohibitation and the unsinkable Molly Brown | Costello, Tom | Article in Journal | | 2001 |
| Property in the constitution and in the courts | Keane, Ronan | Article in Book | | 1988 |
| Prophecies of the expected deliverer in thirteenth and fourteenth century Irish bardic poetry | Finan, Thomas | Article in Journal | | 2002 |
| Proposed uniform regulations for the volunteer force 1933 | Anonymous | Article in Journal | | 1998 |
| Protestant faction, the impeachment of Strafford and the origins of the Irish civil war | Perceval-Maxwell, Michael | Article in Journal | | 1982 |
| Protestant nationalism in eighteenth-century Ireland | Bartlett, Thomas | Article in Book | | 1995 |
| Protestants and the 1826 Waterford county election | Broderick, Eugene | Article in Journal | | 1997 |
| Protestants, Catholics, and university education: Trinity College Dublin in the age of revolution | Power, Thomas P | Monograph or Collective Volume | Wipf and Stock | 2023 |
| Protocols of reading in early Irish literature : notes on some notes to Orgain Denna Ríg and Amra Coluim Cille | Davies, Morgan Thomas | Article in Journal | | 1996 |
| Protocols of reading in early Irish literature : notes on some notes to Orgain Denna Ríg and Amra Coluim Cille | Davies, Morgan Thomas | Article in Journal | | 1996 |
| PTrue to the cause: P T Daly, 1870-1943 | Cody, Séamus | Article in Book | | 2017 |
| Public administration, 1927-1936 | Barrington, T. J. | Article in Book | | 1967 |
| Publishing and sectarial tension in South Munster in the 1760s | Power, Thomas P. | Article in Journal | | 2004 |
| Purgation and propaganda: Thomas Peall on the common disease of the horse | Hartigan, P.J. | Article in Book | | 2013 |
| Puritan subjectivities : the conversion debate in Cromwellian Dublin | Gribben, Crawford | Article in Book | | 2005 |
| Pursuing the millennium. Thomas Russell's attempts to raise Antrim and Down in 1803 | Quinn, James | Article in Journal | | 2003 |
| Putting Ireland on the map again | Sheridan, Cormac | Article in Journal | | 1999 |
| Quaker reports on Famine conditions in Clare, 1847 | Barclay Fox, RobertGrubb, ThomasHarvey, James | Article in Book | | 1998 |
| Quality of life and mortality among children : historical perspectives | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Springer | 2012 |
| Quality of life and mortality in seventeenth-century London and Dublin | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Springer | 2016 |
| Quality of life in seventeenth-century Dublin | Jordan, Thomas E. (Thomas Edward) | Article in Journal | | 2008 |
| Quintin castle | Byers, Thomas | Article in Journal | | 1982 |
| R. R. Madden, historian of the United Irishmen | Woods, C. J. (Christopher John) | Article in Book | | 2003 |
| R.I.C. Consolidation in Limerick 1919-1921 | Toomey, Thomas | Article in Journal | | 2006 |
| Race, nation and empire in the Irish music of Sir Charles Villiers Stanford | Murphy, Michael | Article in Book | | 1998 |
| Radharc ar gCúl : A backward glance. 'Twelve Irish Artists' described | Redshaw, Thomas Dillon | Article in Journal | | 2002 |
| Radharc ar gCúl : A backward glance. Thomas Bodkin, arts policy and exile | Kelly, Anne | Article in Journal | | 2002 |
| Radharc ar gCúl: A backward glance. The color of Ireland: "Twelve Irish Artists" | Rooney, Brendan | Article in Journal | | 2002 |
| Radical nationalisms, 1882-1916 | Kelly, Matthew | Article in Book | | 2018 |
| Radical Satire, Politics and Genre : The Case of Thomas Moore | Moore, Jane | Article in Journal | | 2007 |
| Radicalism and ritual in east Ulster | Miller, David William, 1940- | Article in Book | | 2003 |
| Rathfarnham roads : topographical notes on Rathfarnham and the adjacent hills, including Two Rock and Three Rock mountains Kilmashogue, Tibradden, Killakee, Cruagh, Glencullen and Glendoo | Healy, Patrick Thomas, 1916-2000 | Monograph or Collective Volume | South Dublin Libraries | 2005 |
| Reading Muirchú's Life of St Patrick as a 'Sacred Narration' | O'Loughlin, Thomas | Article in Journal | | 2018 |
| Reading Muirchu's Tara-event within its background as a biblical "trial of divinities" | O'Loughlin, Thomas | Article in Book | | 2003 |
| Reading the Irish future in the Celtic past : T. W. Rolleston and the politics of myth | Lanters, José | Article in Book | | 2003 |
| Reappraising the synod of Whitby | Dailey, Erin Thomas A. | Article in Journal | | 2009 |
| Rebel on the run : T.J. Quinn and the IRB/Land League diaspora in America | Maume, Patrick | Monograph or Collective Volume | Nova Southeastern University | 2000 |
| Rebel Prods : the forgotten story of Protestant radical nationalists and the 1916 Rising | Jones, Valerie | Monograph or Collective Volume | Ashfield Press | 2016 |
| Rebellion : a television history | Bartlett, ThomasDawson, KevinKeogh, Dáire | Monograph or Collective Volume | Gill & Macmillan | 1998 |
| Rebellion and rehabilitation : the first earl of Desmond and the English scene | Frame, Robin | Article in Book | | 2016 |
| Rebellion and style : John Mitchell and the jail journal | Flanagan, Thomas | Article in Journal | | 1970 |
| Rebels Denied a Cause : Fiction, Anti-Jacobinism and the Irish Rebellion | Grenby, Matthew Orville, 1970- | Article in Book | | 2007 |
| Rebels in the dock : the prosecution of the Dublin Fenians, 1865-6 | Kostal, R. W. (Rande W.) | Article in Journal | | 1999 |
| Recalling the 'View': Edmund Spenser and Ireland in the eighteenth century | O'Halloran, Clare | Article in Journal | | 2014 |
| Reclaiming the forgotton church of St Thomas à Becket in Waterford City | McLellan, Damien
| Article in Journal | | 2016 |
| Reclaiming the republican tradition | Honohan, Iseult | Article in Book | | 2005 |
| Recognising Christian origins : an archaeological and historical dilemma | Thomas, Charles | Article in Book | | 1986 |
| Recollections and reflections ... a memoir of a Scottish soldier family in Ireland from the seventeenth century . | Fraser, Thomas, Sir | Monograph or Collective Volume | | 1914 |
| Recollections of our native valley : a history of the parish of Loughill-Ballyhahill and the Owvaun Valley | Curtin, Gerard | Monograph or Collective Volume | Loughill-Ballyhahill Heritage Society | 1996 |
| Reconfigured sovereignty : multi-layered governance in the global age | | Monograph or Collective Volume | Ashgate | 2003 |
| Records of the export of Irish wolf-dogs to the east in the 17th century | Ball, V. | Article in Journal | | 1894 |
| Recreating Kylemore - an exercise in garden archaeology | Golden, AnnJupp, BelindaMcErlean, Thomas | Article in Journal | | 2000 |
| 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 |
| Reforming the Fox : Spenser's 'Mother Hubberds Tale', the beast fables of Barnabe Riche, and Adam Loftus, Archbishop of Dublin | Herron, Thomas, 1968- | Article in Journal | | 2008 |
| Regional industrial change: Northern ireland | Steed, Guy P.F.Thomas, Morgan D. | Article in Journal | | 1971 |
| Regional settlement patterns in early medieval Ireland | Kerr, Thomas R. | Article in Journal | | 2018 |
| Register of the abbey of St Thomas, Dublin | | Monograph or Collective Volume | Cambridge University Press | 1889 |
| Register of the Cathedral Church of St Columb, Derry, 1732-1775 | | Monograph or Collective Volume | Representative Church Body Library | 1999 |
| Register of the Cathedral Church of St. Columb, Derry, 1703-1732 | | Monograph or Collective Volume | Respresentative Church Body Library | 1997 |
| Relations between the Abbey of St Thomas the Martyr and the municipality of Dublin c. 1176-1527 | Davis, Virginia, 1958- | Article in Journal | | 1987 |
| 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 the laity in early modern Galway | Connors, Thomas G. | Article in Book | | 1996 |
| Religion in Ireland | Connolly, Sean J. | Article in Book | | 2002 |
| Religion, land and laws in eighteenth century Thomond | O'Neill, Thomas Patrick | Article in Journal | | 1991 |
| Religion, nationalism and political economy in the early twentieth century | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | NA | 2009 |
| Religion, work-discipline and economic attitudes : the case of Ireland | Connolly, Sean J. | Article in Book | | 1983 |
| Religious affiliation and the immigrant experience : Catholic Irish and Protestant highlanders in Glasgow, 1830-1850 | Sloan, William | Article in Book | | 1991 |
| Religious change, 1550-1800 | O'Connor, Thomas | Article in Book | | 2006 |
| Religious polarization and sectarianism in the Ulster rebellion | Elliott, Marianne | Article in Book | | 2003 |
| Religious politics in Ben Jonson's "The Irish Masque" | Rist, Thomas C. K. | Article in Journal | | 1999 |
| 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 rivalries in France and Ireland in the Age of the French Revolution | Bartlett, Thomas | Article in Journal | | 1991 |
| Reliving the nightmare | Kenny, Thomas | Article in Book | | 2005 |
| Reluctant Fenian : Thomas Francis Meagher and militant Irish-American nationalism | McCarthy, Patrick | Article in Journal | | 2003 |
| Remembering Canon McGarry | Ryan, ThomasStuart, Imogen | Article in Journal | | 1980 |
| Remembering the fallen | McInerney, J. | Article in Journal | | 1996 |
| Remembering to remember (1862-2012). Thomas St George MacCarthy and the Abbey School Tipperary | Marnane, Denis G. | Article in Journal | | 2012 |
| Remembering where the bishop sat : exploring perceptions of the past at the Bishop's Seat, Kilteasheen, Co. Roscommon | Read, Christopher, | Article in Book | | 2010 |
| Reminders of the City of Dublin Steam Packet Company at Holyhead | Owen, John Roger | Article in Journal | | 2005 |
| Reminiscences of east Clare, 1849 | Carlyle, Thomas | Article in Book | | 1998 |
| Reminiscences of Thurles in the early decades of the twentieth century | Condon, Brigid | Article in Book | | 1989 |
| Remonstrantia Hibernorum contra Louvanienses, 1665 | Caron, Redmond
| Monograph or Collective Volume | Gregg | 1970 |
| Renaissance influences in English colonization | Quinn, D. B. (David Beers) | Article in Journal | | 1976 |
| Rental of Gerald, earl of Kildare, A.D. 1518 | | Article in Book | | 1884 |
| Rentals of encumbered estates | O'Neill, Thomas Patrick | Article in Journal | | 1994 |
| Report from the select committee on poor removal [Chairman : Thomas Salt] | Anonymous | Monograph or Collective Volume | | 1878-9 |
| Report of the commissioners appointed to inquire and ascertain how far the mercantile laws in the different parts of the United Kingdom of Great Britain and Ireland may be advantageously assimilated, and also whether any and what alterations and amendments should be made in the law of partnership as regards the question of the limited or unlimited responsibility of partners [Chairman : Thomas Berry Cusack Smith] | Anonymous | Monograph or Collective Volume | | 1854 |
| Report of the commissioners of inquiry into the state of the lunatic asylums and other institutions for the custody and treatment of the insane in Ireland [Chairman : Sir Thomas Nicholas Redington]. Report plus Evidence etc. | Anonymous | Monograph or Collective Volume | | 1857-8 |
| Report of the royal commission on the Land Law (Ireland) Act, 1881, and the Purchase of Land (Ireland) Act, 1885 [Chairman : Earl Cowper], plus Minutes of evidence etc., and Report by Thomas Knipe | Anonymous | Monograph or Collective Volume | | 1887 |
| Report on the fortifications of Limerick, 1685 | Phillips, Thomas | Article in Journal | | 1990 |
| Report on the records of the corporation of Cork, and the collections of Thomas Hewitt, Esq., and Richard Caulfield, LL.D., Cork | Royal Commission on Historical Manuscripts | Article in Book | | 1870 |
| Report on the state of Ireland, 1552 | Walshe, Thomas | Article in Book | | 2016 |
| Report to the Right Honourable the Master of the Rolls upon the Carte and Carew papers in the Bodleian and Lambeth libraries | Brewer, J. S.Hardy, Thomas Duffus, Sir, 1804-1878 | Monograph or Collective Volume | | 1864 |
| Representations of rebellion : 1798 in literature | Dunne, Tom, 1939- | Article in Book | | 1990 |
| Representing cultural divides in Ireland: Some nineteenth- and early twentieth-century mappings of variation in religion and language | Horner, Arnold | Article in Journal | | 2010 |
| Repressing the rebellion in county Down | Bartlett, Thomas | Article in Book | | 1998 |
| Repressing the rebellion in county Longford | Bartlett, Thomas | Article in Book | | 1998 |
| Republic : a hope mislaid? | Kotsonouris, Mary | Article in Book | | 2005 |
| Republicanism and radical memory : the O'Connors, O'Carolan and the United Irishmen | Gibbons, Luke | Article in Book | | 2000 |
| Republics of difference. Yeats, MacGreevy, Beckett | Lloyd, David | Article in Journal | | 2005 |
| Research in progress in English and history in Britain, Ireland, Canada, Australia and New Zealand. | | Monograph or Collective Volume | | 1976 |
| Researches in the south of Ireland : illustrative of the scenery, architectural remains, and the manners and superstitions of the peasantry; with an appendix, containing a private narrative of the rebellion of 1798 | Croker, Thomas Crofton, 1798-1854 | Monograph or Collective Volume | | 1824 |
| Researches in the south of Ireland illustrative of the scenery, architectural remains, and the manners and superstitions of the peasantry, with an appendix containing a private narrative of the rebellion of 1798 | Croker, Thomas Crofton, 1798-1854Danaher, Kevin, 1913-2002 | Monograph or Collective Volume | Irish University Press | 1969 |
| Resolving intercommunal conflict : some enabling factors | Thomas, Quentin, Sir | Article in Book | | 2015 |
| Response of the McDonnell clan to change in early seventeenth century Ulster | McDonnell, Hector | Article in Book | | 2003 |
| Restoration through ritual in Ireland : the celebrations of 1661 | Shaw, Dougal | Article in Book | | 2007 |
| Retrospective : Wentworth's political world in revisionist and post-revisionist perspective | Lake, Peter | Article in Book | | 1996 |
| Rev. Alexander McWhidd : a seventeenth-century minister in Knockbride, Co. Cavan | Barron, Thomas J. | Article in Journal | | 1959 |
| Rev. David Alfred Doudney and educational establishments at Bunmahon, Co. Waterford, 1847-58 | Power, Thomas | Article in Journal | | 1979 |
| Rev. Dr. James O'Fallon, Bishop of Elphin 1756-1786 | Gacquin, William | Article in Journal | | 1996 |
| Rev. James Mac Sparran, Irishman, scholar, preacher and philosopher, 1680-1757 | Murray, Thomas Hamilton | Article in Journal | | 1900 |
| Rev. Professor T. A. Finlay, S. J. | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Rev. Thomas Kennedy (c.1624-1714), founder and first minister of Carland Presbyterian church | Gray, Jonathan | Article in Journal | | 2017 |
| Rev. Thomas MacNamara | Kelly, Joseph P. | Article in Journal | | 1974 |
| Revd Naylor's desecration | Knight, George | Article in Journal | | 2012 |
| Revelation and romanticism : the revolutionary ideology of Thomas Russell | Quinn, James | Article in Book | | 2007 |
| Review article : Why the history of the 1798 rebellion has yet to be written | Bartlett, Thomas | Article in Journal | | 2000 |
| Review article. Challenges of the Historical Survey | Ó Corráin, Daithí | Article in Journal | | 2012 |
| Review article. Ireland's difficulty, the noverlist's opportunity | Ryder, Sean | Article in Journal | | 2008 |
| Review article. Louis Cullen, at home and abroad | Truxes, Thomas M. | Article in Journal | | 2012 |
| Review article. T.K. Whitaker, engineering prosperity or preventing the future | Brownlow, Graham | Article in Journal | | 2011 |
| Review article. The Gaelic Southwest | Herron, Thomas, 1968- | Article in Journal | | 2009 |
| Review Essay. In the shadow of the split. Writing the Irish Civil War | Foster, Gavin | Article in Journal | | 2006 |
| Revolution and the Napier brothers, 1820-40 | Napier, Priscilla | Monograph or Collective Volume | | 1973 |
| Revolution, 1916–1923 | McGarry, Fearghal | Article in Book | | 2018 |
| Revolutionary Dublin, 1795-1801 : the letters of Francis Higgins to Dublin Castle | Bartlett, ThomasHiggins, Francis | Monograph or Collective Volume | Four Courts | 2004 |
| Reward for honesty | Davies, Peter R. B. | Article in Journal | | 2003 |
| Rewriting the past : historical pageantry in the Dublin Civic Weeks of 1927 and 1929 | Dean, Joan Fitzpatrick | Article in Journal | | 2009 |
| Richard Archdekin's catechetical hour | Wall, Thomas | Article in Journal | | 1948 |
| Richard Boyle's ironworks in County Waterford | Power, Thomas | Article in Journal | | 1978 |
| Richard Dungan, master plasterer in London in Shakespeare's time. A continuing quest for origins | Dungan, Thomas P. | Monograph or Collective Volume | Tennessee Valley Publishing | 2003 |
| Richard Flynn, horseman and more | Burke, Thomas A. | Article in Journal | | 2014 |
| Richard Moynan : painting, priviledge and poverty | O'Regan, Maeve | Article in Journal | | 2006 |
| Ringed pins, the Hiberno-Norse, and the discovery of Vinland | Fanning, Thomas | Article in Journal | | 1992 |
| Rishworth, McLaughlin and the Shannon Scheme | Duffy, Paul | Article in Journal | | 2017 |
| Rising from the ashes : the burning of Cork's Carnegie library and the rebuilding of its collections | McCarthy, Thomas | Monograph or Collective Volume | Cork City Libraries | 2010 |
| Rivalry and reform in the Irish college Paris, 1676-1775 | Chambers, Liam | Article in Book | | 2006 |
| Rivalry between Irish Associations in San Francisco over the second funeral of Thomas Bellew | Brophy, Thomas J. | Article in Book | | 2010 |
| Robert Blair of Bangor containing his autobiography from 1593 to 1636 | | Article in Journal | Presbyterian Historical Society of Ireland | 2011 |
| Robert Boyle | Farrington, Thomas | Article in Journal | | 1916 |
| Robert Cranston and the Catalpa escape | Fee, Ciarán | Article in Journal | | 2006 |
| Rolleston and the revival | MacManus, Patrick | Article in Journal | | 1938 |
| Roman Catholicism, Christendom, History: an Enquiry into the Conception of John Hume's Formula for Irish Unity | Dolan, Thomas
| Article in Journal | | 2022 |
| Romanesque architecture and sculpture at Ardmore | O'Keeffe, Tadhg | Article in Book | | 1992 |
| Romanesque sculpture in north Roscommon | Moss, Rachel | Article in Book | | 2010 |
| Roscrea | Cunningham, George | Article in Book | | 1995 |
| Roscrea Poor Law Union : its administration 150 years ago | Deegan, Thomas | Article in Journal | | 1992 |
| Rosse, Robinson, and the resolution of the nubulae | Hoskin, Michael | Article in Journal | | 1990 |
| Roundwood's welcome for President O'Kelly | Timmons, Joe | Article in Journal | | 2004 |
| Roy Geary | Spencer, John | Article in Book | | 2009 |
| Royal Cork Institution : pioneer of education | McCarthy, Kieran | Monograph or Collective Volume | Cork Institute of Technology | 2010 |
| Royal Irish Academy activity in Celtic-Latin studies | Harvey, Anthony | Article in Book | | 1999 |
| Rt. Rev. John England, first bishop of Charleston | Phelan, Thomas P. | Article in Journal | | 1915 |
| Rundale, clachan and farmhouse : an appreciation of the work of Desmond McCourt | Buchanan, R. H. (Ronald Hull) | Article in Book | | 1986 |
| Rural change and rural landscape quality : experience and planning in Europe and Ireland | Aalen, F. H. A. | Article in Book | | 1986 |
| Rural landscapes and communities : essays presented to Desmond McCourt | | Monograph or Collective Volume | Irish Academic Press | 1986 |
| Rural life | O'Neill, Thomas Patrick | Article in Book | | 1957 |
| Rural politics in County Meath, Ireland: ethnographic and historical studies | Wilson, Thomas M. | Monograph or Collective Volume | Edwin Mellen Press | 2013 |
| Sagairt chróga Fhearna | de Vál, Séamas S. | Monograph or Collective Volume | Foilseacháin Ábhair Spioradálta | 2019 |
| Saint Aidan in England | Wallace-Hadrill, J. M. | Article in Book | | 1963 |
| Saint Cathaldus of Taranto | Mooney, Canice | Article in Book | | 1963 |
| Saint Colmcille in Ireland and Scotland | Ó Fiaich, Tomás | Article in Book | | 1963 |
| Saint Columbanus | Dubois, Marguerite-Marie | Article in Book | | 1963 |
| Saint Gall in Switzerland | Hertling, Ludwig | Article in Book | | 1963 |
| Saint Patrick | | Monograph or Collective Volume | Stationery Office for Radio Éireann | 1958 |
| Saint Patrick and fifth century Britain : an historical model explored | Thomas, Charles | Article in Book | | 1979 |
| Saint Peter's College | Nolan, Thomas J. | Article in Journal | | 1960 |
| Saints and skinners: excavations along the northern precinct of the abbey of Saint Thomas the Martyr, Dublin | Duffy, Paul | Article in Book | | 2020 |
| Saints' cults and the early Irish church | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2007 |
| Saints, seaways and dispute settlements | Watkin, Thomas Glyn, 1952- | Article in Book | | 1991 |
| Salmon and trout | Whelan, Ken | Article in Book | | 1997 |
| Salmon of knowledge | Mohr, Thomas | Article in Journal | | 2002 |
| Same but different? the Democratic Unionist Party and Ulster Unionist Party compared | Braniff, MáireHennessey, ThomasMcAuley, James W.Tonge, JonathanWhiting, Sophie A. | Article in Journal | | 2020 |
| Samuel Ferguson and John T. Gilbert | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1948 |
| Samuel Johnson, the Ossian fraud, and the Celtic revival in Great Britain and Ireland | Curley, Thomas M. | Monograph or Collective Volume | Cambridge University Press | 2009 |
| Sarah Cecilia Harrison Dublin's first female city councillor | Burke, Thomas A. | Article in Journal | | 2019 |
| Saving the language : 'the impatient revolutionary' | Morrissey, Thomas J. | Article in Journal | | 1988 |
| Scandal and anti-semitism in 1916 : Thomas Dickson and The Eye-Opener | Morrissey, Conor | Article in Journal | | 2016 |
| Scandal, Wentworth's deputyships and the breakdown of Stuart honour politics | Kane, Brendan | Article in Book | | 2011 |
| Scattered, ambushed and laid out: war and counterinsurgency in the greater Tuam area, 1919-21 | Gardiner, Eamonn T. (Eamonn Thomas) | Article in Journal | | 2015 |
| Scéal na nUachtarán | Murray, Donal | Monograph or Collective Volume | Coiscéim | 2011 |
| Scéla Mucce Meicc Da Thó | Chadwick, Nora Kershaw, 1891-1972 | Article in Book | | 1959 |
| Schools in connection with the Kildare Place Society in county Waterford, 1817-1840 | Power, Thomas | Article in Journal | | 1981 |
| Scotichronicon ... cum ... continuatione [by Walter Bower]. 5 vols. | Fordun, Johannis deHearne, Thomas | Monograph or Collective Volume | | 1722 |
| Scotland and the 1798 rebellion : the limits of 'common cause' | McFarland, E. | Article in Book | | 2003 |
| Scotland's Image of Irelande : Scott, Small, and the Edinburgh edition | Maley, Willy ; Thanisch, Alasdair | Article in Book | | 2021 |
| Scotland’s Easter Rising veterans and the Irish revolution | Tormey, Thomas | Article in Journal | | 2019 |
| Scottish comunities abroad : Some concluding remarks | O'Connor, ThomasSogner, SølviVan Voss, Lex Heerma | Article in Book | | 2005 |
| Scottish radicalism in the later eighteenth century : "The social thistle and shamrock" | McFarland, Elaine W. | Article in Book | | 1999 |
| Scottish trade on the eve of the union, 1660-1707 | Smout, Thomas Christopher | Monograph or Collective Volume | | 1963 |
| Scottish-Irish trade in the eighteenth century | Cochran, L. E. | Article in Book | | 1983 |
| Scoundrels all -- priests and prelates in '98 | Keogh, Dáire | Article in Book | | 1998 |
| Scríobhaithe Phort Láirge 1700-1900 | Ó Suilleabháin, Eoghan | Article in Book | | 1992 |
| Scríobhaithe Phort Lairge, 1700-1900 | Ó Suilleabháin, Eoghan | Article in Book | | 1992 |
| Scriptural interpretation in the fathers : letter and spirit | | Monograph or Collective Volume | Four Courts | 1995 |
| Sea pirate wanted to be king of Ireland | Piondar, Sean | Article in Journal | | 1943 |
| Sean Lemass | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1979 |
| Seán MacEntee : a political life | Feeney, Tom (Thomas M.) | Monograph or Collective Volume | Irish Academic Press | 2009 |
| Seán O’Mahony 1872-1934 - a Thomastown nationalist | Doyle, Joe | Article in Journal | | 1996 |
| Seán T. | Ó Ceallaigh, Seán | Monograph or Collective Volume | Foilseacháin Náisiúnta Teo | 1963 |
| Sean T. O'Kelly | Timmons, Martin | Article in Journal | | 1989 |
| Seanchas Ó Chnoc na Faille | Ó hAirt, Diarmuid | Article in Book | | 1992 |
| Searching for the normal : the Farmers' and Labour Parties in the 1923 election | Knirck, Jason | Article in Book | | 2023 |
| Secret landscapes : mysterious sites, deserted villages and forgotten Places of Great Britain and Ireland | Hales, MichaelVaughan-Thomas, Wynford | Monograph or Collective Volume | Webb & Bower | 1980 |
| Sectarian tensions in Scotland : social and cultural dynamics and the politics of perception | Walker, Graham | Article in Book | | 2000 |
| Securing the Protestant interest : policy, politics and parliament in Ireland in the aftermath of the Glorious Revolution, 1690-95 | McGrath, Charles Ivar | Article in Book | | 1998 |
| Seditious libel in eighteenth-century Dublin: 'Polyphemus's Farewel' (1714) | Geary, ChristopherKeymer, Thomas | Article in Journal | | 2016 |
| Select document : a settlement between the canons of St Thomas’s Abbey, Dublin, and Walter de Lacy concerning the church of Ardmulchan granted to the canons by Theobald Walter | Flanagan, Marie Therese | Article in Journal | | 2020 |
| Select Documents IX. The Irish Parliamentary Party and the Liberals in mid-Ulster, 1894 | | Article in Journal | | 1951 |
| Select documents XXXI. 'What Mr Redmond thought', December 1906 | | Article in Journal | | 1974 |
| Select documents XXXIX. The religious outlook of a Gaelic lord : a new light on Thomas Óg Maguire | | Article in Journal | | 1986 |
| Select documents XXXVIII. Defenders and Defenderism in 1795 | | Article in Journal | | 1985 |
| Select documents. 'The present state of Ireland', 1749 | | Article in Journal | | 2009 |
| Selected speeches and arguments of the Right Hon. Thomas, Baron O'Hagan | | Monograph or Collective Volume | | 1885 |
| Selections from 'Thomas Mellon and his Times' | Mellon, Thomas | Monograph or Collective Volume | Scotch-Irish Trust of Ulster | 1976 |
| Selections from the Zoilomastix of Philip O'Sullivan Beare | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1960 |
| Selections of Irish melodies, with symphonies and accompaniments by Sir John Stevenson, Mus. Doc., and characteristic words by Thomas Moore esq. 10 vols. | Moore, Thomas, 1779-1852Stevenson, John, Sir | Monograph or Collective Volume | | 1808 |
| Self-worth and property : equipage and early medieval personhood | Patterson, Nerys Thomas | Article in Book | | 2000 |
| Senator George Mitchell on the 1998 Good Friday Agreement in conversation with Miriam Nyhan Grey and Thomas Hill (2018 Irish Institute lecture) | Nyhan Grey, Miriam ; Hill, Thomas | Article in Journal | | 2021 |
| Sensibility and the sublime in the storm paintings of Thomas Roberts (1748-1777) | Dunne, Tom, 1939- | Article in Journal | | 2009 |
| Seraphic sparks : The Irish Franciscan and Capuchin Colleges on the Continent | Mac Craith, Mícheál | Article in Book | | 2018 |
| Serving the state : the public sector in Ireland : lectures on the 50th anniversary of the Institute of Public Administration | | Monograph or Collective Volume | Institute of Public Administration | 2009 |
| Settlement changes and their measurement : a case study from Co. Londonderry, 1833-1906 | Currie, E. A. | Article in Book | | 1986 |
| Settlement development and trading in Ireland 1600-1800 : a preliminary investigation | O'Flanagan, P. | Article in Book | | 1983 |
| Settlement patterns in the west of Ireland in the pre-Famine period | Whelan, Kevin | Article in Book | | 1997 |
| Seven Anglo-Irishmen of the Tudor time. Draycot (Henry), Moore (Edward, George, Owen, Thomas), Pipho (Robert), Rich (Barnaby) | Welply, W. H. | Article in Journal | | 1944 |
| Seven centuries of Irish learning 1000-1700 | | Monograph or Collective Volume | The Stationery Office for Radio Éireann | 1961 |
| Seven signatories : tracing the family histories of the men who signed the proclamation | Gorry, Paul | Monograph or Collective Volume | Merrion Press | 2016 |
| Seventeenth century Irish theologians in exile | Wall, Thomas | Article in Journal | | 1939 |
| Seventeenth-century Ireland and Scotland and their wider worlds | Ohlmeyer, Jane H. | Article in Book | | 2006 |
| Sex and the archbishop : John Charles McQuaid and social change in 1960s Ireland | Ferriter, Diarmaid | Article in Book | | 2011 |
| Sex on (Bare) Legs? Thomas Lee and 'Irishness' | Leask, Ian | Article in Journal | | 2010 |
| Sex, lies and rigged returns - the Kerry county parliamentary election of 11 June 1634 and its consequences | McGrath, Bríd ; McInerney, Luke | Article in Journal | | 2017 |
| Sgéalta Thomáis Uí Chathasaigh : Mayo stories told by Thomas Casey | | Monograph or Collective Volume | Irish Texts Society | 1939 |
| Shakespeare, Spenser, and the matter of Britain | Hadfield, Andrew | Monograph or Collective Volume | Palgrave Macmillan | 2004 |
| Shane Leslie and 'Ireland' (1916-17) : 'England's little Irish organ in New York' | Greene, Thomas R. | Article in Journal | | 1987 |
| Shared sovereignty as an instrument of peacemaking in Northern Ireland | Crighton, Elizabeth | Article in Book | | 2003 |
| Sheffield City Libraries' archives department | Meredith, R. | Article in Journal | | 1974 |
| Sheridan Le Fanu | Browne, Nelson | Monograph or Collective Volume | [s.n.] | 1951 |
| Sheridan le Fanu | Begnal, Michael | Monograph or Collective Volume | [s.n.] | 1971 |
| Sheridan Le Fanu : the Purcell papers, 1838-40 | Sullivan, Kevin | Article in Journal | | 1972 |
| Sheridan Le Fanu and greater Chapelizod | McCormack, W. J. | Article in Book | | 2011 |
| Ships provisioned in Waterford for Newfoundland, 1765 | Power, Thomas | Article in Journal | | 1981 |
| Shot at dawn | Lee, David | Article in Book | | 1997 |
| Showdown at Shepherd's Bush. The 1908 Olympic Marathon and the three runners who launched a sporting craze | Davis, David | Monograph or Collective Volume | Thomas Dunne Books - St Martin's Press | 2012 |
| Sidelights on souperism | O'Neill, Thomas Patrick | Article in Journal | | 1949 |
| Sights and scenes in County Clare, 1859 | Lacy, Thomas | Article in Book | | 1998 |
| Sinéad de Valera agus drámaíocht ghaelach na n-óg | Kirwan-Keane, Siobhán | Article in Book | | 2012 |
| Sinn Féin from dual monarchy to the first Dáil | Laffan, Michael | Article in Book | | 1994 |
| Sinn Féin policy and practice (1916-1926) | Ryan, Desmond | Article in Book | | 1968 |
| Sir Edward Lovett Pearce | Sadlier, Thomas U. | Article in Journal | | 1928 |
| Sir Edward Stanhope's Advice to Thomas Wentworth, Viscount Wentworth, concerning the Deputyship of Ireland : an Unpublished Letter of 1631 | Zagorin, Perez | Article in Journal | | 1964 |
| Sir Geoffrey Fenton and the office of Secretary of State for Ireland, 1580-1608 | Barry, Judith | Article in Journal | | 2006 |
| Sir Henry Cavendish (1732–1804), parliamentarian in two countries | Thomas, P. D. G. | Article in Journal | | 2017 |
| Sir Henry Sidney's bridge at Athlone, 1566-7 | Bradley, John, 1954-2014 | Article in Book | | 2007 |
| Sir Humphrey Gilbert and American colonization | Simmons, Richard C. | Article in Journal | | 1969 |
| Sir John Davies : lawyer and poet | Brink, Jean R. | Article in Book | | 2007 |
| Sir John Gilbert (1829-98) : historian of the Irish bourgeoisie | Brady, Ciaran | Article in Book | | 2016 |
| Sir John Gilbert and archival reform | Ó Dúill, Gréagóir | Article in Journal | | 1977 |
| Sir John Gilbert and Irish historiography | Barnard, T. C. (Toby Christopher) | Article in Book | | 1999 |
| Sir John T. Gilbert : life, works and contexts | Twomey, Brendan | Monograph or Collective Volume | Dublin City Public Libraries | 2013 |
| Sir John T. Gilbert and the search for Ireland's 'original history' in the nineteenth century | Twomey, Brendan | Article in Book | | 2013 |
| Sir John T. Gilbert commemorative lectures, 1998-2007 | | Monograph or Collective Volume | | 2009 |
| Sir Piers Crosby, 1590-1646 : Wentworth's "tawney ribbon" | Clarke, Aidan | Article in Journal | | 1988 |
| Sir Richard Bingham's government of Connaught | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| Sir Richard Bingham's government of Connaught | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| Sir Richard Bingham's government of Connaught | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1907 |
| Sir Thomas Brown, 1838-1903 | Smith, Brian | Article in Journal | | 2003 |
| Sir Thomas Browne as 'orphan', with some account of his stepfather, Sir Thomas Dutton | Endicott, N. J. | Article in Journal | | 1961 |
| Sir Thomas Cusack | Kelly, J. P. | Article in Book | | 1962 |
| Sir Thomas Deane and the college buildings | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1950 |
| Sir Thomas Farrell, Stillorgan sculptor | MacMahon, Bryan, 1949- | Article in Journal | | 2013 |
| Sir Thomas Hewett and the new junta for architecture | McParland, Edward | Article in Book | | 1994 |
| Sir Thomas Jackson | Cumiskey, Mary | Article in Journal | | 1990 |
| Sir Thomas Phillips of Hammersmith and Limavady | Phillips, Frank | Article in Journal | | 1986 |
| Sir Thomas Phillips of Limavady | Stewart, Morrison | Article in Journal | | 2010 |
| Sir Thomas Phillips of Limavady, Servitor | Moody, T. W. (Theodore William), 1907-1984 | Article in Journal | | 1939 |
| Sir Thomas Shirley's Project for Jewes | Samuel, Edgar Roy | Article in Book | | 2004 |
| Sir Thomas Smith (1513-77) and the beginnings of English colonial theory | Quinn, D. B. (David Beers) | Article in Journal | | 1945 |
| Sir Thomas Stucley, c 1525-78 : traitor extraordinary | Izon, John | Monograph or Collective Volume | Andrew Melrose | 1956 |
| Sir Thomas Wentworth's visit to Kilkenny, August 1637 | Phelan, Margaret M. | Article in Journal | | 1982 |
| Sir Thomas Wyse 1791-1862 : an advocate of a 'mixed education' policy over Ireland | Batterberry, R. P. J. | Monograph or Collective Volume | Browne and Nolan | 1939 |
| Sir Thomas Wyse and Irish educational reform | Bradley, W.J. | Thesis | | 1946 |
| Sir Thomas Wyse and mixed education | Batterberry, R. P. J. | Article in Journal | | 1939 |
| Sir Walter Ralegh in Ireland | Hennessy, Sir John Pope, 1834-1891 | Monograph or Collective Volume | | 2009 |
| Sir William McArthur K.C.M.G. A biography, religious, parliamentary, municipal, commercial | MacCullagh, Thomas | Monograph or Collective Volume | | 1891 |
| Sir William Petty, 1623-1687 : the genius entrepreneur of seventeenth-century Ireland | Jordan, Thomas Edward | Monograph or Collective Volume | Edwin Mellen Press | 2007 |
| Sister Act | O'Loughlin, Thomas | Article in Book | | 2019 |
| Sister act | O'Loughlin, Thomas | Article in Journal | | 1994 |
| Six decades of St. Thomas' National School, Peterswell, 1944 - 2004 | Peterswell Reunion Book Committee | Monograph or Collective Volume | Peterswell Reunion Book Committee | 2004 |
| Six Local Heroes | Wylie, Griffith | Article in Journal | | 2009 |
| Six tracts on 'coign and livery', c.1568-78 | | Article in Journal | | 2014 |
| Sixmilecross Parish : a brief historical account: thanksgiving for the Sesquicentenary, 1836-1986 | Murphy, Thomas | Monograph or Collective Volume | [Sixmilecross Parish] | 1986 |
| Sixth Report of the Royal Commission on Historical Manuscripts, with appendix, pts. 1 [C. 1745]; 2 : index [C. 2102] | Royal Commission on Historical Manuscripts | Monograph or Collective Volume | | 1877 |
| Sketches of William Dunlap, Thomas P. Johnson and Thomas Sharp, distinguished Irish Americans during revolutionary times | O'Neill, James L. | Article in Journal | | 1909 |
| Sligo | O'Dowd, Mary | Article in Book | | 1994 |
| Smaointe fá Éire Óg | Breathnach, Micheál | Article in Book | | 1945 |
| Smoke without fire? : Munster and the 1798 rebellion | Dickson, David | Article in Book | | 2003 |
| Social conditions in Ireland 1880-1914 | Clear, Caitriona | Article in Book | | 2018 |
| Social life and local meaning : the case of contemporary Thomastown | Gulliver, P. H.Silverman, Marilyn | Article in Book | | 1990 |
| Social life in Ireland 1927-1937 | White, Terence De Vere | Article in Book | | 1967 |
| Social structure | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2009 |
| Society and politics in pre-Norman Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2010 |
| Society and settlement on the Drogheda estate in County Kildare, 1750-1840 | Burke, Mary | Article in Book | | 2006 |
| Society and settlements in 19th century Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1965 |
| Society, community, and identity | Hines, John | Article in Book | | 2003 |
| Socio-economic rights and the making of the 1937 Irish constitution | Murray, Thomas | Article in Journal | | 2016 |
| Solid as a rock? Oldcourt Castle, Co. Wicklow | Bolton, JasonPavia, Sara | Article in Journal | | 1999 |
| Some aspects of nineteenth-century Irish emigration | Ó Gráda, Cormac | Article in Book | | 1977 |
| Some aspects of the life of Doctor John Thomas Troy, O. P., 1739-1823 | Peel, H. E. | Article in Journal | | 1957 |
| Some bronze ringed pins from the Irish Midlands | Fanning, Thomas | Article in Journal | | 1975 |
| Some Celtic kinship terms | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1971 |
| Some civil and ecclesiastical territorial divisions and their geographical significance | Nolan, William | Article in Book | | 1986 |
| Some Clare bygones in drawings by Thomas Johnson Westropp (1860-1922) in the Royal Irish Academy | Harbison, Peter | Article in Journal | | 2007 |
| Some cross-inscribed slabs from the Irish midlands | Fanning, ThomasÓ Heailidhe, Pàdraig | Article in Book | | 1980 |
| Some deeds relating to the Earls of Carrick | Hoyne, Liam | Article in Journal | | 1998 |
| Some early police connections to Stillorgan | Casey, Patrick | Article in Journal | | 2008 |
| Some echoes of 'St Catherine's Bells' | Dawson, T. | Article in Journal | | 1978 |
| Some field monuments in the townlands of Clonmelsh and Garyhundon, Co. Carlow | Fanning, Thomas | Article in Journal | | 1984 |
| Some fitting and adequate recognition : a new direction for civic portraiture in ninteenth-century Ireland's industrial capital | McIntosh, Gillian | Article in Book | | 2011 |
| Some Franciscan 'ex libris' from Multyfarnham library | Wall, Thomas | Article in Journal | | 1951 |
| Some Jesuit contributions in Irish education : a study of the work of Irish members of the Society of Jesus in connection with the Irish College, Salamanca (1592-1610), Mungret College, Limerick (1881-1889), St. Stanislaus College, Tullabeg (1818-1886), and University College, Dublin (1883-1909) | Morrissey, Thomas J. | Thesis | | 1975 |
| Some letters of a Thomond antiquary | Hayes, Richard Francis | Article in Journal | | 1943 |
| Some letters of John P Leahy O.P., regarding 'The Obnoxious Clause' of the Catholic Relief Bill 1829 | Cunningham, John M.
| Article in Journal | | 2022 |
| Some mediaeval documents | | Article in Journal | | 1937 |
| Some MSS of Fr Thomas Lindlay Murray, P.P., Inniscara 1868-1891 | Whelton, Michael John | Article in Journal | | 2000 |
| Some notable friendships | Allworthy, S. W. | Article in Journal | | 1943 |
| Some notes on Barbour's 'Bruce' :Books XIV-XVI and XVIII | Dunlop, R. | Article in Book | | 1925 |
| Some notes on Leixlip | Sadlier, Thomas U. | Article in Journal | | 1928 |
| Some noteworthy Cork contributions to the pursuit of knowledge in relation to soils and agriculture | Collins, J.F. | Article in Journal | | 2010 |
| Some observations on the family background of the signatories of the Proclamation | Feerick, Aidan | Article in Journal | | 2016 |
| Some observations on the medieval pavement tiles from the site of St Nicholas's church, Dublin | Fanning, Thomas | Article in Book | | 1998 |
| Some philological observations on Codex Vindobonensis 940 | Forte, Anthony J. | Article in Book | | 1999 |
| Some rentals of the earl of Shelburne's estates, 1755-1776 | Kelly, Thomas | Article in Journal | | 1939 |
| Some responses to the protestant reformation in sixteenth-century Meath | Walshe, H. C. | Article in Journal | | 1987 |
| Some statues by John Hogan | MacGreevy, Thomas | Article in Journal | | 1947 |
| Some thoughts on early Irish roads and travel | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2012 |
| Some units of measurement in insular art | Lang, James Thomason | Article in Book | | 1988 |
| Some unpublished letters from James Stephens to James Sullivan Starkey and Thomas MacDonagh | Stephens, James, ?1880-1950 | Article in Journal | | 1978 |
| Some views of Ballylinch Castle, Thomastown | Kirwan, John | Article in Journal | | 2006 |
| Some voices from ye olden time | Murray, Thomas Hamilton | Article in Journal | | 1904 |
| Somerset Arthur Butler, 5th earl of Carrick, of Mount Juliet. Marguerite Solly-Flood's 'reclusive earl' | KIrwan, John | Article in Journal | | 2014 |
| Songs illustrating the French invasions of Ireland | Croker, Thomas Crofton, 1798-1854 | Monograph or Collective Volume | | 1847 |
| Sons of fire : the murder of Thomas Hodgett 1921 | Courtney, Ultan | Monograph or Collective Volume | Self Published | 2022 |
| Sore heads and sorrowful days : the cost of underestimating Sir Thomas Wentworth | Empey, Mark | Article in Book | NA | 2006 |
| Soul on fire : a life of Thomas Russell | Quinn, James, 1961- | Monograph or Collective Volume | Irish Academic Press | 2002 |
| Sounds of Manymirth on the Night's Ear Ringing : Percy French (1854-1920): his forgotten Jarvey Years and Joyce's Haunted Inkbottle | Lowry, Bernadette | Monograph or Collective Volume | Carmen Eblana AE Productions | 2021 |
| Source of the term Scotch-Irish | Hudson, Thomas F. | Article in Book | | 1984 |
| Sources - Ashe's survey. Mullacreevie and Knockamell in 1703 | Barden, Sean | Article in Journal | | 2008 |
| Sources and style in Moore's Irish Melodies | Hunt, Una | Monograph or Collective Volume | Routledge | 2017 |
| Sources for a history of Catholic life in Ireland, 1780-1850 | O'Neill, Thomas Patrick | Article in Journal | | 1960 |
| Sources for Irish genealogy in the India Office records | Thomas, Timothy | Article in Book | | 1993 |
| Sources for the history of women in County Kildare | Luddy, Maria | Article in Book | | 2006 |
| Sources for the study of the history of the secondary school curriculum : a survey of the Irish scene, 1921-1962 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1990 |
| Sources of Irish local history. 1st series | O'Neill, Thomas Patrick | Monograph or Collective Volume | Library Association | 1958 |
| Sources of Irish-American genealogy in New England | Daly, Marie E. | Article in Book | | 1985 |
| Sources of local history | O'Neill, Thomas Patrick | Article in Journal | | 1958 |
| Sources of the Liber questionum in euangeliis; the redactor's adaptation of Jerome's Commentarius in Matheum and Augustine's De sermone Domini in monte | Rittmueller, Jean | Article in Book | | 1999 |
| South Ulster in the age of the United Irishmen | MacDonald, Brian | Article in Book | | 2003 |
| Southern Ireland, historians and the First World War | Dooley, Thomas P. | Article in Journal | | 1993 |
| Space and the trace : Thomas Kinsella's postcolonial placelore | Obert, Julia C. | Article in Journal | | 2009 |
| Spanish correspondence | O'Brien, Thomas | Article in Book | | 1994 |
| Speaking of '98 : Young Ireland and republican memory | Ryder, Sean | Article in Journal | | 1999 |
| 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 |
| Speeches of Oliver Cromwell | | Monograph or Collective Volume | | 1989 |
| Spence, Bryson & Co. Ltd. Linen weaving factory, Markethill | Marshall, Pamela | Article in Journal | | 2000 |
| Spenser and Ireland | Jenkins, R. | Article in Journal | | 1952 |
| Spenser's Irish work : poetry, plantation and colonial reformation | Herron, Thomas, 1968- | Monograph or Collective Volume | Ashgate | 2007 |
| Spenser's Irish work : poetry, plantation and colonial reformation | Herron, Thomas, 1968- | Monograph or Collective Volume | Ashgate | 2007 |
| Sport, recreation and physical education : the evolution of a national policy of regeneration in Eire, 1926-48 | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1986 |
| Srahanboy and its environs: a rich archaeological landscape | Neligan, Thomas P. | Article in Journal | | 2014 |
| St Brendan's cathedral, Loughrea, 1897-1947 | MacGreevy, Thomas | Article in Journal | | 1947 |
| St Dympna's Church, Carlow. A student project | Conroy. Thomas | Article in Journal | | 2009 |
| St Michan's after 1845 | Brennan, Elizabeth | Article in Book | | 2002 |
| St Michan's Parish in 1845 | Jones, Priska | Article in Book | | 2002 |
| St Moling, contemplative Christianity and the medieval landscape of south Carlow : biblical style in the poem Gáir na Gairbhe | de Paor, Máire B. | Article in Book | | 2008 |
| St Patrick : the legend and the bishop | O'Loughlin, Thomas | Article in Journal | | 2006 |
| St Patrick and fifth-century Irish chronology : the kings | Dumville, David N. | Article in Book | | 1993 |
| 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 terminology for confirmation | Marsh, Thomas William | Article in Journal | | 1960 |
| St. Brendan America's first discoverer. How a learned and adventurous Irishman and sixty monks outstripped Columbus by nearly ten centuries in his quest of the western hemisphere - a graphic and convincing treatise | Lonergan, Thomas S. | Article in Journal | | 1910 |
| St. Oliver Plunkett : Deo Gratias | Burns, Thomas | Monograph or Collective Volume | Tommy Burns | 2000 |
| St. Patrick : the man and his works | O'Loughlin, Thomas | Monograph or Collective Volume | Triangle | 1999 |
| St. Patrick in Cornwall? : the origin and transmission of Vita tertia S. Patricii | Dumville, David N. | Article in Book | | 1996 |
| St. Thomas : church and Apostle | | Monograph or Collective Volume | [privately published] | c. 1940 |
| Stability, crisis and change in post-war Ireland 1945–1973 | Girvin, Brian | Article in Book | | 2018 |
| Stair Nuadat Find Fenim, and Sliabh nDee, alias Sliabh na tri nDee, alias Sliabh Guaire | Barron, Thomas J. | Article in Journal | | 1976 |
| Stapletown | Walsh, Thomas | Article in Journal | | 1948 |
| Starting Ireland on the road to industry : Henry Ford in Cork | Grimes, Thomas | Thesis | | 2008 |
| Stella's cottage : Jonathan Swift, Esther Johnson and her cottage | Murray, Thomas Cornelius, 1873-1959 | Monograph or Collective Volume | Trymme Press | 1991 |
| Stephens, Devoy and Clarke | Comerford, R. V. (Richard Vincent) | Article in Book | | 2016 |
| Stephens, Devoy, Tom Clarke | Ryan, Desmond | Article in Book | | 1960 |
| Stonehead, Clannaphillip church, Co. Cavan | Barron, Thomas J. | Article in Journal | | 1941 |
| Stoneman of Cloughabroady | Ó Maoileóin, Séamus | Article in Journal | | 2006 |
| Stories of Subversion: Thomas Moore's 'Memoirs of Captein Rock' and Irish historical tradition | O'Halloran, Clare | Article in Journal | | 2014 |
| Strafford | Smith, Frederick Winston Furneaux, 2nd Earl of Birkenhead | Monograph or Collective Volume | Hutchinson | 1938 |
| Strafford and Ireland : the history of his viceroyalty, with an account of his trial. 2 vols. | O'Grady, W. H. A. | Monograph or Collective Volume | | 1923 |
| Strafford and the Byrnes' country | Cooper, John Phillips | Article in Journal | | 1966 |
| Strafford in Ireland 1633-41 : a study in absolutism | Kearney, Hugh | Monograph or Collective Volume | Cambridge University Press | 1989 |
| Strafford in Ireland : a revaluation | Ranger, Terence Osborn | Article in Journal | | 1961 |
| Strafford in Ireland, 1633-1640 | Kearney, Hugh | Article in Journal | | 1989 |
| Strafford in Ireland, 1633-41 : a study in absolutism | Kearney, H. F. | Monograph or Collective Volume | | 1959 |
| Strafford's 'spirit' at the royalist court : Sir George Radcliffe and Irish affairs, 1643-5 | Pogson, Fiona | Article in Journal | | 2019 |
| Strafford's ghost : the British context of Viscount Lisle's lieutenancy of Ireland | Adamson, John Sonley Anthony | Article in Book | | 1995 |
| Strafford's Irish army, 1640-41 | Forkan, Kevin Brendan | Thesis | | 1999 |
| Strafford, 1593-1641 | Wedgwood, Cicely Veronica, Dame, 1910-1997 | Monograph or Collective Volume | | 1935 |
| Strafford, the "Londonderry Business" and the "New British History" | Ohlmeyer, Jane H. | Article in Book | | 1996 |
| Strafford, the Ulster-Scots, and the covenanters | Perceval-Maxwell, Michael | Article in Journal | | 1973 |
| Strafford. 2 vols. | Gardner, Winifred Anne Henrietta Christina, Baroness Burghclere, 1864-1933 | Monograph or Collective Volume | | 1931 |
| Strained neutrality : Irish-American Catholics, Woodrow Wilson, and the Lusitania | Rowland, Thomas J. | Article in Journal | | 1995 |
| Strangers to citizens : the Irish in Europe, 1600-1800 | Lyons, Mary AnnO'Connor, Thomas | Monograph or Collective Volume | National Library of Ireland | 2008 |
| Strong words, brave deeds : the poetry, life and times of Thomas O'Brien volunteer in the Spanish civil war | | Monograph or Collective Volume | O'Brien Press | 1994 |
| Studies in Irish history, 1649-1775 | | Monograph or Collective Volume | [s.n.] | 1903 |
| Studies in the quality of life in Victorian Britain and Ireland | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Springer | 2013 |
| Sub-Inspector Thomas Trant of Callan and 1848 Rising | Nolan, William | Article in Book | | 2007 |
| Subversion at sea : structure, style and intent in 'Immrama' | Clancy, Thomas Owen | Article in Book | | 2000 |
| Suicide and religion in Ireland : an investigation of Thomas Masaryk's theory of suicide | Kelleher, Michael J.
Chambers, Derek
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| Surgeon General - Thomas Maunsell C.B., LL.D., A.M.S. | McKenna, John | Article in Journal | | 1992 |
| Surgeon Major T.H. Parke : a short history of his life | Smith, Des | Monograph or Collective Volume | Carrick-on-Shannon and District Historical Society | 1994 |
| Surnames of County Galway | O'Neill, Thomas Patrick | Article in Journal | | 1994 |
| Surprising benefit of I.F.H.S. membership | Davies, PeterWilkins, David | Article in Journal | | 2007 |
| Survey of the Thomond Estate, 1703 | Moland, Thomas | Article in Book | | 1998 |
| Surviving the Civil Constitution of the Clergy : Luke Joseph Hooke's revolutionary experiences | O'Connor, Thomas | Article in Journal | | 1996 |
| Surviving the Reformation in Ireland (1534-80) : Christopher Bodkin, Archbishop of Tuam, and Roland Burke, Bishop of Clonfert | Connors, Thomas G. | Article in Journal | | 2001 |
| Survivors | Leonard, Jane | Article in Book | | 2008 |
| Swan and shadow : Yeat's dialogue with history | Whitaker, Thomas R. | Monograph or Collective Volume | University of North Carolina Press | 1964 |
| Swapping Canada for Ireland: the Fenian invasion of 1866 | Wilson, David A. | Article in Journal | | 2008 |
| Swift and Berkeley on economic development | McPhail, EdwardRashid, Salim | Article in Book | | 2009 |
| Swift's early biographers | Williams, H. | Article in Book | | 1949 |
| Swift, secret history, and war | Keymer, Thomas | Article in Journal | | 2019 |
| T. C. Murray's farmsteads : an historical record | Lane, Pádraig G. | Article in Journal | | 2007 |
| T. E. Cliffe Leslie, Irish social reform, and the origins of the English historical school of economics | Koot, G. M. | Article in Journal | | 1975 |
| T. F. Meagher and the Irish Brigade | Cullinane, Jim | Article in Journal | | 2003 |
| T. F. Meagher reminiscences - an unpublished letter (to C. Gavan Duffy) | Ryan, Tom | Article in Journal | | 1976 |
| T. K. Whitaker | Crotty, Raymond, 1925-1994 | Article in Book | | 2012 |
| T. K. Whitaker : portrait of a patriot | Chambers, Anne | Monograph or Collective Volume | Doubleday Ireland | 2014 |
| T. K. Whitaker, 1976-96 | Fanning, Ronan | Article in Book | | 2008 |
| T. P. O'Connor and The Star, 1886-90 | Sheehy, Ian D. | Article in Book | | 2004 |
| T. Percy C. Kirkpatrick, physician, bibliophile | O'Doherty, Mary | Article in Journal | | 1998 |
| T. W. Rolleston, W. B. Yeats and the new history of Ireland controversy | O'Brien, Maria | Article in Journal | | 2002 |
| T.E. Lawrence's Irish ancestry and relationship to Sir Walter Raleigh | Knight, Ronald D., 1932- | Monograph or Collective Volume | R. D. Knight | 2000 |
| T.E. Lawrence’s Irish links : 1995 marks the sixteenth anniversary of his death | Bailey, Bel | Article in Journal | | 1995 |
| T.G.F. Paterson O.B.E., M.A., M.R.I.A. Founder curator of Armegh County Museum: a memoir by Roger Weatherup, who succeeded him as curator | Weatherup, Roger | Article in Journal | | 2012 |
| T.J. O’Connell (1882-1969): Pioneer of the Irish National Teachers Organisation and Labour Party leader | Cunningham, John, 1957-Puirséil, Niamh | Article in Book | | 2014 |
| T.J. Westropp : the father of Burren archaeology | O'Connell, J. W. | Article in Book | | 1991 |
| T.J. Westropp's Notes on the Discoveries at Ennis Abbey 1893 | Westropp, Thomas Johnson | Article in Journal | | 2019 |
| T.N. Deane no better than Westropp | Ní Ghrádaigh, Jenifer | Article in Journal | | 2008 |
| T.W. Russell and the compulsory-land-purchase campaign in Ulster, 1900-3 | Cosgrove, Patrick J. | Article in Journal | | 2010 |
| T.W. Russell: temperature orator, militant Unionist missionary, radical land reformer and political pragmatist | McKeown, Paschal | Thesis | | 1991 |
| Tabo Morrissey - melodeon player (1888-1962). A short account of his life and times | Walsh, Walter | Article in Journal | | 2001 |
| Táin after Táin : the mythical past and the Anglo-Irish | Leerssen, J. Th. (Joep) | Article in Book | | 1988 |
| Táin Bó Cúailnge | Greene, David | Article in Book | | 1959 |
| Táin Bó Cúailnge, hagiography and history | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2015 |
| Teachers and code-breakers : the Latin Genesis tradition, 430-800 | O'Loughlin, Thomas | Monograph or Collective Volume | [s.n.] | 1998 |
| Teachers of Cashel and Emly, A.D. 1750-1760 | Dwan, Thomas | Article in Journal | | 1939 |
| Teagasc na Scrioptúr agus na Diagachta as Breatnais | Thomas, Isaac | Article in Book | | 1997 |
| Teige MacMahon and Peter O'Connell, seanchaí and scholar in Co. Clare | Wall, Thomas | Article in Journal | | 1964 |
| Templetown and the order of the hospital | Walsh, Thomas P. | Article in Journal | | 1970 |
| Tennyson at Kilkee and other Munster tours, 1842-1878 | Byrne, Thomas J. | Article in Journal | | 2002 |
| Terence Bellew McManus 1811(?)-1861: a short biography | McAllister, T. G. (Thomas G.) | Monograph or Collective Volume | St Patrick's College, Department of Modern History | 1972 |
| Terence Gorman | Honohan, PatrickNeary, Peter | Article in Book | | 2009 |
| Testing the depth of Catholic/ Protestant conflict : the case of Thomas Leland's "History of Ireland", 1773 | Liechty, Joseph | Article in Journal | | 1987 |
| Texts and society | Stacey, Robin Chapman | Article in Book | | 2003 |
| The "dull lapse of hopeless slavery": European & Irish politics in Moore's Fables for the Holy Alliance, Rhymes on the Road, &c. &c . | Martin, Jennifer | Article in Book | | 2018 |
| The "principal inhabitants" of county Waterford in 1746 | Morris, Henry F. | Article in Book | | 1992 |
| The 'Black Book' of King's Inns : an introduction with an abstract of contents | Power, Thomas | Article in Journal | | 1985 |
| The 'Clongowes' of Thomas Francis Meagher | Pierce, Tony | Article in Journal | | 2003 |
| The 'college builder' - Thomas Whitehouse? | Pollard, M. | Article in Journal | | 1993 |
| The 'Corpus Iuris Hibernici' | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1980 |
| The 'Forty-eight men in exile | MacManus, M. J. | Article in Book | | 1945 |
| The 'Industrial' Sisters of Charity in Benada, Co. Sligo, 1858-1955 | McDermott, Margaret Brid | Article in Book | | 1998 |
| The 'Intelligencer' | Sheridan, ThomasSwift, Jonathan, 1667-1745Woolley, James | Monograph or Collective Volume | Clarendon Press | 1992 |
| The 'Intelligencer' : its dating and contemporaneity | Wooley, James | Article in Book | | 1985 |
| The 'Irish' play on the London stage, 1990-2004 | Roche, Anthony | Article in Book | | 2004 |
| The 'Library of Ireland', 1845-1847 | O'Hegarty, P. S. | Article in Book | | 1945 |
| The 'Mayflower' letters, 1757-58: Correspondence from Limerick to the Caribbean in the era of the Seven Years' War | Truxes, Thomas M. | Article in Journal | | 2017 |
| The 'Rajah of Tipperary' and the Begun of Sardhana | James, David | Article in Journal | | 1988 |
| The 'Sword' speech in context | Hearne, John M. | Article in Journal | | 2003 |
| The 1613 will and 1614 codicil of Thomas, Earl of Ormond | Butler, Thomas, 10th earl of Ormond, 1532-1614 | Article in Journal | | 2000 |
| The 1659 census | Halpin, Thomas B. | Article in Journal | | 1999 |
| The 1718 Kilkenny presentation of freedom to Richard Tighe of Dublin | Sinsteden, Thomas | Article in Journal | | 1999 |
| The 1755 Louth Election Medal | Bellew, Séamus
| Article in Journal | | 2014 |
| The 1798 rebellion in north Leinster | Chambers, Liam | Article in Book | | 2003 |
| The 1798 rebellion in perspective | Bartlett, Thomas | Article in Book | | 2000 |
| The 1895 fire in Castlerea House, the repair estimates, and the aftermath | Wills-Sandford, Thomas G. | Article in Journal | | 2014 |
| The 1913 lock-out : letters for the archbishop | Morrissey, Thomas J. | Article in Journal | | 1986 |
| The 1941 mission of Frank Aiken to the United States : an American perspective | Rosenberg, Joseph L. | Article in Journal | | 1980 |
| The 4th Earl of Dunraven (1841-1926) : local realities and 'conciliation' politics | Spillane, Michael V. | Article in Book | | 2009 |
| The 80th anniversary of the death of a submarine. The Old Leighlin connection | Power, Ann | Article in Journal | | 2020 |
| The AARIR and the 1923 General Election in the United States | Donlon, Regina | Article in Book | | 2023 |
| The abbey of St Thomas the martyr and the le Brun family: piety and patronage in Anglo-Norman Dublin | Foley, Áine | Article in Book | | 2019 |
| The Abbey of St Thomas the Martyr, Dublin|Mainistir Thomáis Mairtíreach, Baile Átha Cliath | Foley, Áine | Monograph or Collective Volume | Dublin City Council | 2017 |
| The abbey of St Thomas the Martyr, near Dublin | Elliott, A. L. | Article in Book | | 1990 |
| The Abbey Theatre 1916 plaque | Wren, James | Article in Journal | | 1999 |
| The Abercromby affair | Gaynor, Tony | Article in Book | | 2003 |
| The absentee landlord's landscape : the Watson-Wentworth estate in eighteenth-century Ireland | Jones, Melvyn | Article in Journal | | 2000 |
| The achievements of our Irish monks | Ryan, John | Article in Book | | 1963 |
| The act of union | McGuire, James | Article in Book | | 1986 |
| The administration of the diocese of Dublin during the eighteenth century | Kennedy, Raymond Thomas | Thesis | | 1970 |
| The administration of Thomas Drummond in Ireland | Kelly, T. | Thesis | | 1941 |
| The affair at Fort William and Mary | Gregory, Thomas | Article in Journal | | 1907 |
| The affiliations and origins of the Catechesis Celtica : an ongoing quest | De Coninck, LucMacNamara, Martin | Article in Book | | 1999 |
| The aftermath | McLaughlin, Terry | Article in Journal | | 2006 |
| The agricultural trade of the port of Waterford, 1809-1909 | Solar, Peter Michael | Article in Book | | 1992 |
| The Airgíalla charter poem : the legal content | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2005 |
| The Alamo and the Carlow man Thomas Hendricks, Barnahask (1815-1851) | Anonymous | Article in Journal | | 2000 |
| The Alderman : Alderman Tom Kelly (1868-1942) and Dublin Corporation | Carden, Sheila | Monograph or Collective Volume | Dublin City Council | 2007 |
| 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 American government and the Irish question during World War 1 | Noer, Thomas J. | Article in Journal | | 1973 |
| The American motif in the Irish literary renaissance : the Old Lady's lost children | Evans, Thomas | Article in Journal | | 1987 |
| The ancient chapter-house of the priory of the Holy Trinity, Dublin | Drew, Thomas | Article in Book | | 1990 |
| The Ancient Church of St. Nicholas, Carrickfergus, Diocese of Connor: A report to the Right Rev. Robert Knox, D.D., Lord Bishop of Down and Connor and Dromore | Drew, Thomas | Monograph or Collective Volume | W. Erskine Mayne|E. Posonby | 1872 |
| The ancient exchequer of England, the treasury, and origin of the present management of the exchequer and treasury of Ireland | Thomas, F. S. | Monograph or Collective Volume | | 1848 |
| The ancient exchequer of England; the treasury; and origin of the present management of the exchequer and treasury of Ireland | Thomas, F. S. | Monograph or Collective Volume | | 1848 |
| The Anglo-Irish treaty | Gallagher, FrankO'Neill, Thomas Patrick | Monograph or Collective Volume | Hutchinson | 1965 |
| The Anglo-Normans and their English dialect of south-east Wexford | Ó Muirithe, Diarmaid | Article in Book | | 1977 |
| The apocalypse in Ireland : prophecy and politics in the 1820s | Power, Thomas P | Monograph or Collective Volume | Peter Lang | 2023 |
| The appeal of Thomas Franke to the Court of Claims, 1666 | Franke, Thomas | Article in Journal | | 2018 |
| The appointment of Dr Troy to the see of Dublin | Peel, H. E. | Article in Journal | | 1971 |
| The appointments of Patrick Curtis and Thomas Kelly as archbishop and coadjutor archbishop of Armagh | Macaulay, Ambrose | Article in Journal | | 1982 |
| The archaeology of County Carlow: an aerial perspective | Barrett, Gillian F. | Article in Book | | 2008 |
| The archaeology of early Christianity in the North of Ireland | Hamlin, AnnKerr, Thomas R. (Thomas Robert), 1972- | Monograph or Collective Volume | Archaeopress | 2007 |
| The archaeology of parks and gardens, 1600-1900 : an introduction to Irish garden archaeology | McErlean, Thomas | Article in Book | | 2007 |
| The archaeology of the Celts in Ireland | Raftery, Joseph | Article in Book | | 1964 |
| The archaeology of the continental Celts | Frey, Otto-Herman | Article in Book | | 1964 |
| The archaeology of the Great Famine : time for a beginning | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 1997 |
| The archaeology of writing in the time of Adomnán | Campbell, Ewan | Article in Book | | 2010 |
| The archdeacon (Cody) family in the American south 1730-1875 | Boaz, Thomas | Article in Journal | | 1999 |
| The Architecture of the Old Museum | Patton, Marcus | Article in Book | | 2023 |
| The architecture of Deane and Woodward | O'Dwyer, Frederick | Monograph or Collective Volume | Cork University Press | 1997 |
| The ardent exile : the life and times of Thomas D'Arcy McGee | Phelan, Josephine | Monograph or Collective Volume | Macmillan | 1951 |
| The Arklow yawl | Myler, Thomas | Article in Journal | | 1986 |
| The army and law and order in the nineteenth century | Crossman, Virginia | Article in Book | | 1996 |
| The army and the Dáil - civil/military relations within the independence movement | O'Halpin, Eunan | Article in Book | | 1994 |
| The army in independent Ireland | O'Halpin, Eunan | Article in Book | | 1996 |
| The arrival of the Famine Irish in New York City | Gallagher, Thomas | Article in Book | | 1987 |
| The art and science of political economy : Nassau Senior and Ireland in the 1830s | Boylan, Ciara M.Boylan, Thomas A. | Article in Book | | 2010 |
| The art of authority | O'Reilly, Jennifer | Article in Book | | 2003 |
| The Arthur manuscript | | Article in Journal | | 1950 |
| The Arthur manuscript | | Article in Journal | | 1962 |
| The artillery train of Thomas Wentworth, Earl of Strafford, 1640 | Mercer, Malcolm | Article in Journal | | 2011 |
| The artist and the people, a foray into uncertain semiotics | Thomas, Charles | Article in Book | | 1995 |
| The Association of Anaesthetists of Great Britain and Ireland 1932-1992 and the development of the speciality of anaesthesia : sixty years of progress and achievement in the context of scientific, political and social change | Boulton, Thomas B. | Monograph or Collective Volume | Association of Anaesthetists of Great Britain and Ireland | 1999 |
| The Association of Anaesthetists of Great Britain and Ireland, 1932-92, and the development of the speciality of anaesthesia | Boulton, Thomas B. | Thesis | | |
| The Atherton file | Clarke, Aidan | Article in Journal | | 1979 |
| The Atkins of Mallow | Myers, Kevin | Article in Journal | | 2009 |
| The attempt by the Department of Defence to introduce the Sokol system of physical education into Irish schools in the 1930s | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1985 |
| The attempted Anglicisation of Ireland in the seventeenth century : an exemplar of 'British history' | Canny, Nicholas P. | Article in Book | | 1996 |
| The augmentation of the army in Ireland 1767-1769 | Bartlett, Thomas | Article in Journal | | 1981 |
| The author of the poem 'Mac an Cheannaí' | Ó Buachalla, Breandán | Article in Book | | 2010 |
| The authorship of the manuscript Irish parliamentary diary (1776-89) in the Library of Congress | Thomas, Peter David Garner | Article in Journal | | 1962 |
| The autobiography of Thomas Witherow, 1824-1890: the boy from Auglish, near Dungiven, who became Presbyterian minister of Maghera and then first Professor of Church History in Magee College, Londonderry | Dunlop, EullMawhinney, GrahamWitherow, Thomas | Monograph or Collective Volume | Ballinascreen Historical Society | 1990 |
| The background to 1798 in Wexford | Powell, Thomas | Thesis | | 1970 |
| The background to the Wexford rebellion, 1790-1798 | Powell, Thomas | Article in Journal | | 1975 |
| The Bally Cotton Job: An incredible true story of IRA Pirates | Mahon Thomas | Monograph or Collective Volume | Mercier Press | 20 |
| The Bandon river ships 'Thomas' and 'Hope', 1610-1614|Bibliography | O'Sullivan, Paddy | Article in Journal | | 2014 |
| The bard of Erin : a study of Thomas Moore's Irish melodies, 1808-1834 | Tessier, Thérèse | Monograph or Collective Volume | [s.n.] | 1981 |
| The Bardic search for God: vernacular theology in Gaelic Ireland,1200-1400 | Finan, Thomas | Article in Journal | | 2007 |
| The barony of Shanid : a short history of Shanegolden, Foynes and Robertstown | Culhane, Thomas Joseph | Monograph or Collective Volume | Mount Pleasant Publications | 2003 |
| The Basnetts during the 16th and 17th centuries | Percival, S. T. B. | Article in Journal | | 1962 |
| The battle at Monasternenagh, 1579 | Morsch, Thomas | Article in Journal | | 2003 |
| The battle of Aughrim | Murtagh, Diarmuid | Article in Book | | 1964 |
| The battle of Benburb | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Book | | 1964 |
| The battle of Clontarf | Ryan, John | Article in Book | | 1964 |
| The battle of Crossbarry : the private British army inquiries into the deaths of Charlie Hurley and the other three volunteers | Ó Cuanacháin, Pádraig | Article in Journal | | 2003 |
| The battle of Dysert O'Dea, May 10, 1318 | Westropp, Thomas Johnston | Article in Journal | | 1918 |
| The battle of Faughart | Sayles, George Osborne | Article in Book | | 1964 |
| The battle of Harlem Heights | Emmet, Thomas Addis | Article in Journal | | 1911 |
| The battle of New Ross | Dickson, Charles, 1886-1978 | Article in Book | | 1964 |
| The battle of Piltown, 1462 | Butler, George | Article in Journal | | 1964 |
| The Battle of Plassey and its Limerick connections | Hodkinson, Brian | Article in Journal | | 2009 |
| The battle of Rathangan, 24-28 May 1798 | Corrigan, Mario | Article in Book | | 2006 |
| The battle of the Yellow Ford | Falls, Cyril Bentham | Article in Book | | 1964 |
| The beginnings of English colonisation, 1569-1618 | Newton, Arthur Percival | Article in Book | | 1929 |
| The beginnings of Fenianism | Green, E. R. R. | Article in Book | | 1968 |
| The beginnings of historic tradition and survival of Celtic mythology in Ireland | Westropp, Thomas Johnson | Article in Journal | | 1919 |
| The beginnings of modern Ireland | Bradshaw, Brendan | Article in Book | | 1973 |
| The beginnings of the 'undertaker' system | Hayton, D. W. (David William) | Article in Book | | 1979 |
| The Belfast labour dispute and riots of 1907 | McHugh, J. | Article in Journal | | 1977 |
| The Belmont boys | Fitzgerald, Michael | Article in Journal | | 2020 |
| The bi-lingual programme of instruction : 1904-1922 with specific reference to its introduction in west Waterford | O'Donoghue, Thomas A., 1953- | Article in Journal | | 1984 |
| The biblical text of the Book of Deer : evidence for the remains of a division system from its manuscript ancestry. APPENDIX: A concordance of the display initials of the Book of Deer with the Ammonian sections / Eusebian canons; | O'Loughlin, Thomas | Article in Book | | 2008 |
| The bilingual programme of instruction 1904-1922 | O'Donaghue, Thomas | Article in Journal | | 1984 |
| The bilingual programme of instruction in the county Waterford gaeltacht, 1904-1922 | O'Donoghue, Thomas A., 1953- | Article in Book | | 1992 |
| The Birmingham family of Athenry | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1918 |
| The birth of the modern constitution | Canny, Nicholas P. | Article in Book | | 1988 |
| The Bishop of Meath and the Ratoath imposter : Thomas Lewis O'Beirne (1748-1823) and Laurence Hynes Halloran (1765-1831) | Comerford, Patrick | Article in Journal | | 2005 |
| The Bishop Stock address | Mitchell, Thomas | Article in Book | | 1993 |
| The Black Castle at Leighlin | Coyle, J,, Rev., fl.1917 | Article in Journal | | 2018 |
| The Blackall line, two branches, one remaining | Goodwillie, John | Article in Journal | | 2017 |
| The Bloody Bridge and other papers relating to the insurrection of 1641 (Sir Phelim O'Neill's rebellion) | Fitzpatrick, Thomas | Monograph or Collective Volume | | 1903 |
| The blueshirts | Thornley, David | Article in Book | | 1967 |
| The book of Irish books | Kennedy, Thomas D. | Monograph or Collective Volume | Albertine Kennedy | 1982 |
| The Bordeaux-Dublin letters, 1757 : correspondence of an Irish community abroad | | Monograph or Collective Volume | Oxford UP for the British Academy | 2013 |
| The borough of Thomastown in Irish history, 1520-1652 | Silverman, Marilyn | Article in Journal | | 2001 |
| The Boston Irish : a political history | O'Connor, Thomas H. | Monograph or Collective Volume | North Eastern University Press | 1995 |
| The brewster in medieval and early modern Kilkenny and Waterford | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 2015 |
| The Bridge Castle, Thomastown, Co. Kilkenny | Murtagh, Ben | Article in Book | | 1988 |
| The British and peace in Northern Ireland : the process and practice of reaching agreement | | Monograph or Collective Volume | Cambridge UP | 2015 |
| The British army and Ireland since 1922 | Jeffery, Keith | Article in Book | | 1996 |
| The British background to the Irish Rebellion of 1641 | Russell, Conrad Sebastian Robert, 5th earl Russell, 1937-2004 | Article in Journal | | 1988 |
| The British Foreign Office and new perspectives on the Irish issue in Anglo-American relations, 1919-21 | Hachey, Thomas E. | Article in Journal | | 1972 |
| The British Museum catalogue of medieval tiles : a review, incorporating the Irish evidence | Fanning, Thomas | Article in Journal | | 1981 |
| The brothers Grimm and T. C. Croker | Hennig, John | Article in Journal | | 1946 |
| The builders of the Boyne tombs | Mitchell, Frank | Article in Book | | 1986 |
| The burden of the present : Theobald Wolfe Tone, republican and separatist | Bartlett, Thomas | Article in Book | | 1993 |
| The Burkes of Marble Hill | Sadleir, Thomas U. | Article in Journal | | 1913 |
| The burning of Knockcroghery village Co. Roscommon 1921 | Donlon, Regina | Monograph or Collective Volume | Four Courts Press | 2022 |
| The Butler archbishops of Cashel | Morris, Thomas | Article in Journal | | 1955 |
| The Butlers of Ballyglasheen, Co. Tipperary | Bunbury, Turtle | Article in Journal | | 2012 |
| The Butlers of South Carolina, U.S.A., and the Butlers of Carlow, Ireland | Butler, Thomas, Sir | Article in Journal | | 1981 |
| The Cambridge History of Ireland Volume IV. 1880 to the Present | | Monograph or Collective Volume | Cambridge University Press | 2018 |
| The Cambridge Modern History, 3 : The wars of religion | | Monograph or Collective Volume | | 1905 |
| The Capt. Cornelius O'Connor house in Homer : a symbol for the Dakota county Irish | Kuhlman, Thomas A. | Article in Journal | | 1982 |
| The captains' games : army and society in Elizabethan Ireland | Brady, Ciarán | Article in Book | | 1996 |
| The Capuchins in Cork | Walsh, T. J. (Thomas Joseph) | Article in Journal | | 1952 |
| The career and correspondence of Thomas Allan, c. 1725-98 | Johnston, E. M. | Article in Journal | | 1957 |
| 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 ANZACs. County Carlow-born World War One ANZAC dead: some of our long forgotton emigrants | Greene, Jackie | Article in Journal | | 2019 |
| The Carlow College priest : from Australasia to the Americas | McEvoy, John | Article in Book | | 2008 |
| The Carlow workhouse | Foley, Thomas | Article in Journal | | 1999 |
| The Carte Project : An Electronic Calendar of the Carte Papers in the Bodleian Library | Anonymous | Article in Journal | | 2006 |
| The case of Ireland stated | Simms, J. G. (John Gerald) | Article in Book | | 1973 |
| The case of the incorrigible canon: Dublin's first heresy conviction, 1310, and the rivalry between its cathedral chapters | Callan, Maeve B. | Article in Journal | | 2013 |
| The case of the Moat Ring: from Cornashee to the House of Lords | Knight, George | Article in Journal | | 2009 |
| The case of the snow 'Johnson' : New York city's Irish merchants and trade with the enemy during the Seven Years War | Truxes, Thomas M. | Article in Book | | 2003 |
| The Catachesis Veronensis | Martin, Lawrence T. | Article in Book | | 1999 |
| The catechism in Irish : Bonaventure O'Hussey, O.F.M. | Wall, Thomas | Article in Journal | | 1942 |
| The Cathedral of the Assumption : an outline of its history | O'Toole, James | Article in Book | | 1989 |
| 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 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 secondary school curriculum in Ireland, 1922-1962 | O'Donoghue, Thomas A., 1953- | Monograph or Collective Volume | Peter Lang | 1999 |
| The Catholic church in Connecticut : their growth and character | Duggan, Thomas | Monograph or Collective Volume | The States History | 1930 |
| The Catholic church since the Reformation | Kelleher, Thomas | Article in Book | | 1994 |
| 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 community in Hamilton c.1800-1914 | Mitchell, Martin J. | Article in Book | | 1995 |
| 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 question in the eighteenth century | Bartlett, Thomas | Article in Journal | | 1993 |
| The Catholic University of Ireland | Wall, Thomas | Article in Journal | | 1954 |
| The causes of the rebellion in Ireland (1798) : and other writings by Rev. Thomas Ledlie Birch, United Irishman | Birch, Thomas LedlieClifford, Brendan | Monograph or Collective Volume | Athol | 1991 |
| The Celtic aftermath in the islands | Jackson, Kenneth | Article in Book | | 1964 |
| The Celtic cross at Limburg an der Lahn, Germany: a sentimental journey | O'Brien, Anthony | Article in Journal | | 2005 |
| The Celtic homily : creeds and eschatology | O'Loughlin, Thomas | Article in Journal | | 1998 |
| The Celtic languages | Greene, David | Article in Book | | 1964 |
| The Celts | | Monograph or Collective Volume | Mercier Press | 1964 |
| The Celts and classical authors | Tierney, James | Article in Book | | 1964 |
| The census of Ireland, 1821-1911 : general reports and extracts | Jordan, Thomas Edward | Monograph or Collective Volume | Edwin Mellen Press | 1998 |
| The centenary of John T. Gilbert (1829-1898) | Clark, Mary | Article in Journal | | 1998 |
| The centenary of Thomas Davis | Mehigan, P. D. | Article in Journal | | 1944 |
| The chairing of Thomas Spring Rice | Herbert, Robert | Article in Journal | | 1945 |
| The changing face of the Irish public service | Boyle, Richard | Article in Book | | 2009 |
| The changing form of the irish language | Ó Cuív, Brian | Article in Book | | 1969 |
| The changing fortunes of the Headfort estates, 1870-1928 | Mooney, Joe | Monograph or Collective Volume | Four Courts Press | 2012 |
| The changing image of O'Connell | McCartney, Donal | Article in Book | | 1984 |
| The Chevalier O'Gorman | Harbison, Sheila | Article in Journal | | 2000 |
| The chief governors : the rise and fall of reform government in Tudor Ireland, 1536-1588 | Brady, Ciarán | Monograph or Collective Volume | Cambridge University Press | 1994 |
| The Christian Brothers and the second reformation in Ireland | Keogh, Dáire | Article in Journal | | 2005 |
| The Christian Brothers in Thurles | Ó Dúgáin, Seán | Article in Book | | 1989 |
| The Chronicle of Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Monograph or Collective Volume | Liverpool University Press | 2006 |
| The chronicle of the 19th century | Mullaney, Thomas | Article in Journal | | 2000 |
| The chronicles of a Gay Gordon | Gordon, Joseph M.Toomey, Thomas | Article in Journal | | 2003 |
| The church and change | Fisher, Desmond | Article in Book | | 1986 |
| The Church and settlement | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1984 |
| The Church of Ireland : trauma, opportunity, legacy | Power, Thomas P | Article in Book | | 2021 |
| The Church of Ireland in County Carlow, 1549-2000 | MacCarthy, R. B. (Robert B.) | Article in Book | | 2008 |
| The Church of Ireland Unions of Killinane and Kilconickny, Loughrea County Galway: A History | Kearney, Gerry | Monograph or Collective Volume | The author | 2015 |
| The church overseas | McDonald, Thomas | Article in Book | | 1970 |
| The churches founded by Saint Patrick | Mac Airt, Seán | Article in Book | | 1958 |
| The Churches of Callan, ancient and modern | Shelly, Thomas | Article in Journal | | 1879 |
| The churches of County Clare and the origin of the ecclesiastical divisions in that county | Westropp, Thomas Johnston | Article in Journal | | 1900 |
| The city of Limerick in the 17th century | O'Sullivan, Thomas F. | Article in Book | | 1951 |
| The City of Londonderry : demographic trends and socio-economic characteristics 1650-1900 | Thomas, Colin | Article in Book | | 1999 |
| The civil war in Kerry | Doyle, Thomas | Monograph or Collective Volume | Mercier Press | 2008 |
| The Clog an Oir, or bell shrine of Scattery | Westropp, Thomas Johnston | Article in Journal | | 1900 |
| The Coilleanach | Ó Murchadha, Seán | Article in Book | | 2000 |
| The collectors of Irish dialect material | Quin, E. G. | Article in Book | | 1977 |
| The college and the nation | Williams, Thomas | Article in Book | | 1954 |
| The college of New Jersey and the Presbyterian Church | Wertenbaker, Thomas Jefferson | Article in Journal | | 1998 |
| The colonial Conan Doyle : British imperialism, Irish nationalism and the gothic | Wynne, Catherine | Monograph or Collective Volume | Greenwood | 2002 |
| The Colonial Laws Validity Act and the Irish Free State | Mohr, Thomas | Article in Journal | | 2008 |
| The colonial venture of Sir Thomas Smith in Ulster, 1571-1575 | Morgan, Hiram | Article in Journal | | 1985 |
| The coming of Christianity | De Paor, Liam | Article in Book | | 1986 |
| The coming of joint-stock banking to Scotland and Ireland 1820-1845 | Munn, C. W. | Article in Book | | 1983 |
| The coming of parliament | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1973 |
| The coming of the men of the cross to East Cavan, then known as Sliabh Guaire of the Gailenga | Barron, Thomas J. (Thomas James, 1903-1992) | Article in Book | | 2012 |
| The coming of the Welshmen to Tirawley | McDonnell, Thomas | Article in Journal | | 1987 |
| The complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct and dormant, vol. 1 : Ab-Adam to Basing; vol. 2 : Bass to Canning; vol. 3 : Canonteign to Cutts; vol. 4 : Dacre to Dysart; vol. 5 : Eardley to Spalding to Goojerat; vol. 6 : Gordon to Hurstpierpoint; vol. 7 : Husee to Lincolnshire; vol. 8 : Lindley to Moate; vol. 9 : Moels to Nuneham; vol. 10 : Oakham to Richmond; vol. 11 : Rickerton to Sisonby; vol. 12 pt. 1 : Skelmersdale to Towton; [vol. 12] pt. 2 : Tracton to Zouche; vol. 13 : Peers created 1901 to 1938. 13 vols. in 14 | Cokayne, George Edward, 1825-1911Doubleday, H. A.Gibbs, VicaryScott-Ellis, Thomas Evelyn, 8th Baron Howard de WaldenWarrand, DuncanWhite, Geoffrey Henllan, 1873- | Monograph or Collective Volume | | 1910 |
| The complete Young Irelander | Downey, Alan. | Monograph or Collective Volume | Carthage Press | 1945 |
| The composite literal gloss of the double psalter of St.-Ouen and the contents of MS Vat. Pal. Lat. 68 | De Coninck, Lucas | Article in Book | | 1999 |
| The concept of Ireland | Herries Davies, Gordon L. | Article in Book | | 1986 |
| The conduct of the Anglo-Irish war, 1919-1921 | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Book | | 1968 |
| The Confederacy's fighting chaplain : Father John B. Bannon | Tucker, Phillip Thomas, 1953- | Monograph or Collective Volume | University of Alabama Press | 1992 |
| The confederation of Kilkenny | Cregan, Donal F. | Article in Book | | 1973 |
| The Confession of Saint Patrick | Grosjean, Paul | Article in Book | | 1958 |
| The Connaught Rangers Mutiny: Thomas Murray's story | MacMahon, Bryan, 1949- | Article in Journal | | 2021 |
| The Conolly archive | Malcomson, A. P. W.Walsh, Patrick, | Monograph or Collective Volume | Irish Manuscripts Commission | 2010 |
| The constitution : a view from the bench | Walsh, Brian | Article in Book | | 1988 |
| The constitution and the role of women | Scannell, Yvonne | Article in Book | | 1988 |
| The constitutions of Ireland and the development of national identity, 1919-1984 | Harkness, D. W. | Article in Book | | 1993 |
| The construction of the 'Hibernensis' | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1998 |
| The contested identities of Ulster protestants | | Monograph or Collective Volume | Palgrave Macmillan | 2015 |
| The context and course of Thomas Orde's plan of education of 1787 | Kelly, James, 1959- | Article in Journal | | 1986 |
| The context and uses of literacy in early Christian Ireland | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1998 |
| The context of Tintagel : a new model for the diffusion of post-Roman Mediterranean imports | Thomas, Charles | Article in Journal | | 1988 |
| The continuity of the Gaelic tradition in eighteenth-century Ireland | Bromwich, R. S. | Article in Journal | | 1947 |
| The contribution of O'Connell | MacDonagh, Oliver | Article in Book | | 1973 |
| The conversion experience : the case of Fr James O'Farrell, OP, 1785-7 | Kelly, James, 1959- | Article in Book | | 2005 |
| The convicts : transportation from Ireland | Costello, Con | Article in Book | | 1984 |
| The corporation of Waterford in the eighteenth century | Milne, Kenneth | Article in Book | | 1992 |
| The correspondence of James Boswell with David Garrick, Edmund Burke, and Edmond Malone | Baker, Peter StuartCopeland, ThomasKahrl, G. M.McClellan, RachelOsborn, James | Monograph or Collective Volume | | 1987 |
| 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 correspondents of Thomas Andrews | Sharp, Robert | Article in Journal | | 2002 |
| The Cosgrave legacy | Collins, Stephen | Monograph or Collective Volume | Blackwater | 1996 |
| The Cosgrave party : a history of Cumann na nGaedheal, 1923-33 | Meehan, Ciara | Monograph or Collective Volume | Royal Irish Academy | 2010 |
| The council book of the corporation of Drogheda Vol. 1 ... 1649 to 1734 | | Monograph or Collective Volume | | 1915 |
| The counsels of Cormac: an ancient Irish guide to leadership; a new translation from the original Old Irish | Cleary, Thomas | Monograph or Collective Volume | | 2004 |
| The counter-revolution and Franco-Irish solidarity : Irish clerical refugees at the universities of Toulouse and Cahors in the seventeenth and eighteenth centuries | Ferté, Patrick | Article in Book | | 2006 |
| The country house and its demesne in County Carlow | Campbell, R. TimothyRoyle, Stephen A. | Article in Book | | 2008 |
| The country in Irish history | Daly, Mary E. | Article in Book | | 2001 |
| The county manager | Haslam, Richard | Article in Book | | 2001 |
| The court martial of Thomas Kent | O'Shea, BrendanWhite, Gerry | Article in Journal | | 2006 |
| The courts of Dáil Éireann | Kotsonouris, Mary | Article in Book | | 1994 |
| The creation of RTE and the impact of television | Mac Conghail, Muiris | Article in Book | | 1984 |
| The creation of the Dáil : a volume of essays from the Thomas Davis lectures | | Monograph or Collective Volume | Blackwater Press in association with Radio Telefís Éireann | 1994 |
| The Creevekeeran incident - an examination of judicial process in county Armagh in 1822 | Gilmore, Brian | Article in Journal | | 2011 |
| The crisis in Ireland, an account of the present condition of Ireland and suggestions towards reform | Wyndham-Quin, Windham Thomas, 4th Earl of Dunraven | Monograph or Collective Volume | Hodges Figgis | 1905 |
| The crisis year : Europe and the Atlantic in 1798 | Gough, Hugh | Article in Book | | 2003 |
| The Cromwellian confiscation in Muskerry | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1920 |
| The cross and the sword. Marie, Tommy and Charles Martin in the First World War. Parts 1-3 | Lecane, Philip | Article in Journal | | 2003 |
| The Crozier Memorial LOL 297 Pipe Band, Cavanapole, Killyea, in July 1949 | Gilmore, Brian | Article in Journal | | 2013 |
| The Crozier Memorial LOL 297 Pipe Band, Cavanapole, Killylea in July 1949 | Gilmore, Brian | Article in Journal | | 2013 |
| The cults of saints Patrick and Palladus in early medieval Scotland | Clancy, Thomas Owen | Article in Book | | 2009 |
| The cultural geography of rural Ireland in the twentieth century | Smyth, W. J. (William John), 1944- | Article in Book | | 1986 |
| The Culture War: the Gaelic League and Irish-Ireland | Ó Conchobair, Brian | Article in Book | | 2018 |
| The cup of madness: Religious insanity in A Lost Name | Cavalli, Valeria | Article in Book | | 2016 |
| The curious career of sub-inspector Thomas St George McCarthy | De Búrca, Marcus | Article in Journal | | 1988 |
| The Curragh : a prehistoric landscape | Clancy, Pádraig | Article in Book | | 2006 |
| The curse of Cromwell : a history of the Ironside conquest of Ireland, 1649-53 | Esson, Denis Main Ross | Monograph or Collective Volume | Leo Cooper | 1971 |
| The Czech reception of Irish poetry and prose, c. 1790-2013 | Mánek, Bohuslav | Article in Book | | 2014 |
| The Dáil cabinet's mission to Belfast November 1921 to January 1922 | Clancy, Julitta | Article in Journal | | 2021 |
| The Dáil government and Irish local democracy, 1919-23 | Garvin, Tom | Article in Book | | 2001 |
| The date 432 | Dumville, David N. | Article in Book | | 1993 |
| The dating of the White Castle, Athy, Co. Kildare : an outlying bastion of the Pale | Murtagh, Ben | Article in Book | | 2011 |
| The Davis influence | Fay, BrianLangtry, Joseph | Article in Book | | 1998 |
| The Davisons, A century by the Roe | Kealey, Donal | Article in Journal | | 2005 |
| The dawn of the Reformation. 1534-1547 | Gogarty, Thomas | Article in Journal | | 1913 |
| The day Maurice Fitzgibbon became the White Knight | Collins, Noel | Article in Journal | | 2009 |
| The de Burghs of Oldtown | de Burgh, Thomas J. | Article in Journal | | 1905 |
| The De Burgo Clans (continued) : the Clann David Burke and the family of William, Sheriff of Connaught | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1903 |
| The De Burgo clans of Galway | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1900 |
| The De Burgo clans of Galway | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| The De Vesci papers | | Monograph or Collective Volume | Irish Manuscripts Commission | 2006 |
| The Dean of Kildare and a revolution in France | | Article in Journal | | 1980 |
| The death of Brother Edmund Ignatius Rice in the words of an eyewitness | Connolly, M. Austin | Article in Book | | 1994 |
| The death of the Irish language | Walsh, Richard B. | Article in Book | | 1986 |
| The Decline of the Irish Language | Wall, Maureen (née Mac Geehin) | Article in Book | | 1969 |
| The decorated bookbindings of Sir Edward Sullivan, Bart | Lange, Thomas V. | Article in Journal | | 1995 |
| The defence forces - history outlined | McDonald, Thomas | Article in Journal | | 1967 |
| The defence of Ireland 1797 | Kerrigan, Paul M. | Article in Journal | | 1998 |
| The defence of Protestant Ireland, 1660-1760 | Connolly, Sean J. | Article in Book | | 1996 |
| The defence of the English lordship, 1250-1450 | Frame, Robin | Article in Book | | 1996 |
| The deliverance of Donegal: a political ballad and the Donegal election of 1874 | Blair, Raymond | Article in Journal | | 2018 |
| The demand and supply of priests to the United States from All Hallows College, Ireland, between 1842-1860 | O'Loughlin, Thomas | Article in Journal | | 1983 |
| The Democratic Unionist Party : from protest to power | Braniff, MaireHennessey, ThomasMcAuley, James W.Tonge, JonathanWhiting, Sophie | Monograph or Collective Volume | Oxford University Press | 2014 |
| The departure of Thomas MacDonagh (1878-1916) from Kilkenny in 1903 | Ó Drisceoil, Proinsias | Article in Journal | | 2017 |
| The Derrynaflan paten : discovering an ancient theology | O'Loughlin, Thomas | Article in Book | | 2012 |
| The development of anaesthetic apparatus : a history based on the Charles King Collection of the Association of Anaesthetists of Great Britain and Ireland | Thomas, K. B. | Monograph or Collective Volume | | 1975 |
| The development of early modern Irish prose | Mac Airt, Seán | Article in Book | | 1961 |
| The development of Irish trade unions | McCarthy, Charles | Article in Book | | 1980 |
| The development of neonatal paediatrics at the Rotunda | Clarke, Thomas A.Matthews, Thomas G. | Article in Book | | 1995 |
| The development of the dairy industry in county Waterford | Breathnach, Proinnsias | Article in Book | | 1992 |
| The Devil in Hiberno-Latin exegesis of the early middle ages | Kelly, J. F. | Article in Book | | 1999 |
| 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 diaries (1888, 1911 [review] and 1912) of Rachel Wood Wolfe of Snugville, Skibbereen, Co. Cork. | Ungoed-Thomas, Jasper | Article in Journal | | 2016 |
| The diary of Thomas Conolly, M.P. : Virginia, March-April 1865 | Lankford, N. D. | Article in Journal | | 1987 |
| The difficulties in coping with parish registers as a genaelogical source | O'Connor, Thomas, of County Kerry | Article in Journal | | 1992 |
| The diffusion of Adomnán's De Locis Sanctis in the medieval period | O'Loughlin, Thomas | Article in Journal | | 2000 |
| The dimensions of British radicalism : the case of Ireland, 1874-95 | Heyck, Thomas William | Monograph or Collective Volume | University of Illinois Press | 1974 |
| The diocese of Derry in the twentieth century | Bradley, ThomasMadden, Finbar J. | Article in Book | | 2000 |
| The district of Grangegorman | Moylan, Thomas King | Article in Journal | | 1945 |
| The divisions of south Munster under the Tudors | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1897 |
| The domestic and international roles of Irish overseas colleges, 1590-1800 | O'Connor, Thomas | Article in Book | | 2017 |
| The dominance of the English language in the 19th century | de Fréine, Seán | Article in Book | NA | 1977 |
| The Dominicans of Rosbercon (1267 - c.1800) | Flynn, Thomas S. | Monograph or Collective Volume | The author | 1981 |
| The Doneraile Fenian | Shine, Michael | Article in Journal | | 1991 |
| The draft indenture of Thomas, Duke of Gloucester as lieutenant of Ireland, 1391, with 2 plates | Johnston, Dorothy | Article in Journal | | 1982 |
| The dream of Bishop Loras : a catholic Iowa | Auge, Thomas E. | Article in Journal | | 1980 |
| The Dublin and Drogheda Railway: the first great Irish speculation | Geraghty, P. J. | Article in Journal | | 2013 |
| The Dublin medical journals | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1932 |
| The Dublin Orator : Thomas Sheridan's Influence on Eighteenth-Century Rhetoric and Belles Lettres | Benzie, William | Monograph or Collective Volume | University of Leeds | 1972 |
| The Dublin Protestant working class, 1870-1930 : economy, society, politics | Maguire, Martin | Article in Book | | 1998 |
| The Dubliner known as 'King of the Ruhr' | Kullmann, Kurt | Article in Journal | | 2016 |
| The duel between Daniel O'Connell and John d'Ésterre | Doyle, Thomas | Article in Journal | | 1998 |
| The duke of Ormond, the Popish Plot and the Exclusion Crisis, 1677-82 | Doyle, Thomas J. | Thesis | | 2004 |
| The Dungannon conventions of 1782-1783 | Ó Conluain, Proinsias | Article in Journal | | 2008 |
| The Dungarvan ore ships Part I: The example of the coaster 'Ruby' | Cowman, DesMorris, John | Article in Journal | | 2014 |
| The dynamics of the clan system in fourteenth century Clare | Nugent, Pat | Article in Book | | 2000 |
| The dynamics of the clerical-lay relationship in the Roscommon Gaelic League | McMahon, Timothy G.Paton, Monica | Article in Journal | | 2013 |
| The Earl and Silverstream : Prize horses | Devlin, Audrey Poynton | Article in Journal | | 2005 |
| The Earl Grey orphan scheme, 1848-1850, and the Irish diaspora in Australia | Abbott, Rebecca | Article in Book | | 2016 |
| The earl of Cork and the fall of the earl of Strafford, 1638-41 | Little, Patrick, 1969- | Article in Journal | | 1996 |
| The earl of Strafford and the arts | Wedgwood, Cicely Veronica, Dame, 1910-1997 | Article in Journal | | 1961 |
| The Earl of Strafforde's letters and despatches with an essay towards his life by Sir George Radcliffe ... 2 vols. in 1 | | Monograph or Collective Volume | | 1739 |
| The earl of Wharton and Whig party politics, 1679-1715 | Robbins, Christopher | Monograph or Collective Volume | Edwin Mellen Press | 1992 |
| The Earl, the nephew and the mountain man | Brennan, Eddie | Article in Journal | | 2006 |
| The earliest Christian art in Ireland and Britain | Thomas, Charles | Article in Book | | 1987 |
| The earliest world maps known in Ireland | O'Loughlin, Thomas | Article in Journal | | 1993 |
| The earls of Ormond and the liberty of Tipperary, c.1603-41 | McKnight, Aileen | Thesis | | 1985 |
| The earls of Ormond and Tipperary's role in the governing of Ireland 1603-1641 | McClintock, Aileen | Article in Journal | | 1988 |
| The early development of metallurgy in the British Isles | Budd, P.Gale, D.Pollard, A. M.Thomas, R. G.Williams, P. | Article in Journal | | 1992 |
| The early failures of the Irish College Rome, 1628–78 | Binasco, Matteo | Article in Book | | 2018 |
| The early history of St. Thomas' Abbey, Dublin | Gwynn, Aubrey | Article in Journal | | 1954 |
| The early history of the town of Birr or Parsonstown | Cooke, Thomas LalorHogan, Margaret | Monograph or Collective Volume | Esker Press | 1990 |
| The early mediaeval Gaelic lawyer | Charles-Edwards, T. M. (Thomas Mowbray) | Monograph or Collective Volume | Department of Anglo-Saxon, Norse and Celtic, University of Cambridge | 1999 |
| The early medieval Church | Harney, LorcanKerr, Thomas R.McCormick, FinbarO'Sullivan, Aidan | Article in Book | | 2014 |
| The early presidents, 1938-1973 | Meehan, Ciara | Article in Book | | 2014 |
| The early-modern Irish college network in Iberia, 1590-1800 | O Connell, Patricia | Article in Book | | 2001 |
| The Easter Proclamation of 1916 and the democratic programme | Mansergh, Martin | Article in Book | | 2005 |
| The Eastern Mediterranean and the Western provinces : a British perspective | Thomas, Charles | Article in Book | | 1994 |
| The ebbs and flows of fortune : the life of Thomas Howard, third Duke of Norfolk | Head, David M. | Monograph or Collective Volume | University of Georgia Press | 1995 |
| The economic and political ideas of James Fintan Lalor | O'Neill, Thomas Patrick | Article in Journal | | 1950 |
| The effigy of William Burke | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1902 |
| The election that made the first Dáil | Coakley, John | Article in Book | | 1994 |
| The electoral rise and fall of Clann na Poblachta : who voted for Clann, where, when and why | O'Sullivan, Colman Tadhg | Article in Book | | 1998 |
| The eleven years' tyranny of Charles I | Kearney, H. F. | Monograph or Collective Volume | | 1962 |
| The emergence of an Irish community in Saint-Malo, 1550-1710 | Lyons, Mary Ann | Article in Book | | 2001 |
| The emergence of the Irish Catholic nation, 1750-1850 | Bartlett, Thomas | Article in Book | | 2014 |
| The emigrant ship : The transportation, regulation and reception of Irish immigrants in New Brunswick, 1815-1855 | Power, Thomas P. | Article in Book | | 1992 |
| The Emmet portrait of Robert Fulton | Tuite, Thomas P. | Article in Journal | | 1914 |
| The Emmets and the Jameses : an Irish-American case study | Tóibín, Colm | Article in Book | | 2024 |
| The End of Disadvantage? The descendants of Irish-Catholic immigrants in modern Scotland since 1945 | Devine, Thomas Martin | Article in Book | | 2008 |
| The England family of Bandon; part 2 | England, M. J. | Article in Journal | | 2004 |
| 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 connection and Irish and Scottish development in the eighteenth century | Devine, Thomas Martin | Article in Book | | 1983 |
| The English connections and Irish and Scottish development in the eighteenth century | Devine, Thomas Martin | Article in Book | | 1995 |
| The English conquest of Ireland, 1166-85 : mainly from the 'Expugnatio Hibernica' of Giraldus Cambrensis. Pt 1 : Text | Bray, ThomasFurnivall, F. J. | Monograph or Collective Volume | | 1896 |
| The English language in Ireland | | Monograph or Collective Volume | Mercier Press | 1977 |
| The enigma as exemplar : Walter Butler (d.1638) and Schiller's Wallenstein (1799) | Krobb, Florian | Article in Book | | 2010 |
| The enigma of Tom Kettle : Irish patriot, essayist, poet, British soldier 1880-1916 | Lyons, J. B. (John Benignus) | Monograph or Collective Volume | Glendale | 1983 |
| The entire Gilbert : the life and times of John T. Gilbert | Hardiman, Nodlaig P. | Article in Book | | 1999 |
| The environment, 1945-70 | Clarke, Brendan | Article in Book | | 1979 |
| The equine industry in county Kildare | Breathnach, ProinnsiasVan Egeraat, Chris | Article in Book | | 2006 |
| The establishment of the Model School system in Ireland, 1834-1854 | Mangione, Thomas | Article in Journal | | 2003 |
| The estate of John Otway Wemys, Danesfort House, 1896 | O'Dwyer, Michael | Article in Journal | | 1998 |
| The estate system in mid-nineteenth century county Waterford | Proudfoot, Lindsay J. | Article in Book | | 1992 |
| The estate system of landholding in nineteenth-century Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Book | | 1986 |
| The ethnic descent of Kentucky's early population | Purvis, Thomas L. | Article in Journal | | 1982 |
| The Europe that the earls encountered | Bergin, Joseph | Article in Book | | 2010 |
| The European ancestry of the United States population, 1790 | Purvis, Thomas L. | Article in Journal | | 1984 |
| The European economic community | Murphy, John A. | Article in Book | | 1986 |
| The European modernists : MacGreevy, Devlin and Coffey | Dawe, Gerald, 1952- | Article in Book | | 1996 |
| The European Union and the development of local government in Ireland | Coyle, Carmel | Article in Book | | 2001 |
| The evangelist slab at Athlone, and some additional cross-inscribed stones from Athlone and Lemanaghan | Fanning, ThomasÓ Floinn, Raghnall | Article in Journal | | 1985 |
| The eve of the Reformation | Gogarty, Thomas | Article in Journal | | 1912 |
| The evolution of a capital market : the case of Ireland | Thomas, W. A. | Article in Journal | | 1987 |
| The evolution of pre-hospital emergency care : Belfast and beyond | Baskett, Thomas F.Geddes, John S.Stewart, Ronald D. | Monograph or Collective Volume | Clinical Press | 2017 |
| The evolution of the Troubles, 1970-72 | Hennessey, Thomas | Monograph or Collective Volume | Irish Academic Press | 2007 |
| The evolution of Ulster Protestant identity in the twentieth century: nations and patriotism | Hennessey, Thomas | Article in Book | | 2008 |
| The evolving moral and physical geometry of childhood in Ulster workhouses, 1838-55 | Thomas, Liz | Article in Journal | | 2013 |
| The evolving status of elementary teachers in Ireland (1831-1921) : from ‘feckless and impoverished’ to ‘respectable’ | Walsh, Thomas | Article in Journal | | 2022 |
| The evolving status of elementary teachers in Ireland (1831–1921) : from ‘feckless and impoverished’ to ‘respectable’ | Walsh, Thomas | Article in Journal | | 2022 |
| The exchange of letters between Lally and Coote upon the surrender of Pondichery, 15th January 1761 | | Article in Journal | | 2004 |
| The exclusion of the Dáil courts and the Privy Council appeal from the creation of the courts of the Irish Free State, 1922-1924 | Mohr, Thomas | Article in Journal | | 2025 |
| The Execution of the Earl of Desmond | Ashdown-Hill, JohnCarson, Annette | Article in Journal | | 2005 |
| The execution of the earl of Desmond, 1468 | Cosgrove, Art | Article in Journal | | 1975 |
| The exile and repatriation of Father Dominic O'Connor (O.F.M. Capuchin), 1922-58 | Borgonovo, John | Article in Journal | | 2017 |
| The expansion of two Royal tribes of Connaught | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| The experience of being a councillor | Gallagher, Pat | Article in Book | | 2001 |
| The failure of idealism? Thomas Russell and Robert Emmet | Kelly, James, 1959- | Article in Journal | | 2003 |
| The Fairgreen revisited | Cleere, Joan | Article in Journal | | 2003 |
| The fall and rise of the Irish nation : the Catholic question, 1690-1830 | Bartlett, Thomas | Monograph or Collective Volume | | 1992 |
| The fall of the house of Desmond | Mac Curtain, Margaret | Article in Journal | | 1975 |
| The Fallen remembered in St. Peter's | Onions, Mark | Article in Journal | | 2014 |
| The falling world | Ryan, John | Article in Book | | 1963 |
| The family in Ireland, 1880–2015 | Earner-Byrne, Lindsey | Article in Book | | 2018 |
| The family in transition | Kennedy, Finola | Article in Book | | 1986 |
| The family of Saunders of Saunders' Grove, County Wicklow | Sadlier, Thomas U. | Article in Journal | | 1921 |
| The Famine and its consequences | O'Neill, Thomas Patrick | Article in Book | | 1957 |
| The famine and post-famine adjustment | Whelan, Kevin | Article in Book | | 1986 |
| The famine and the Catholic church : a review article | McGrath, Thomas | Article in Journal | | 1997 |
| The famine in Carlow | O'Neill, Thomas Patrick | Article in Journal | | 1947 |
| The Famine in Kilkenny | O'Neill, Thomas Patrick | Article in Journal | | 1958 |
| The famine in the Skibbereen Union (1845-51) | Hickey, Patrick | Article in Book | | 1995 |
| The famous historye of the life and death of Captaine Thomas Stukeley | Anonymous | Monograph or Collective Volume | [s.n.] | 1605 |
| The farmers | Manning, Maurice | Article in Book | | 1979 |
| The feminization of the Canadian frontier. Engendering the "peacable kingdom" myth in the writings of Anne Sadlier (1820-1913) & Isabella Valancy Crawford (1850-1887) | King, Jason | Article in Journal | | 2006 |
| The Fenian movement : a select bibliography | Moody, T. W. (Theodore William), 1907-1984 | Article in Book | | 1968 |
| The Fenian rising of 1867 | Nowlan, Kevin B. | Article in Book | | 1968 |
| The Fenian Wild Geese : from the last convict ship to the Catalpa rescue | Waters, Ormond D. P. | Monograph or Collective Volume | Catalpa Press | 2011 |
| The Fenians : for the Old Land | Duffy, Luke J. | Article in Book | | 1942 |
| The Fianna Éireann and the War of Independence - a personal experience | Dargan, Pat | Article in Journal | | 2006 |
| The fight at Burgatia House | O'Callaghan, Con | Article in Journal | | 2007 |
| The Fighting Irish : The story of the extraordinary Irish soldier | Newark, Tim | Monograph or Collective Volume | Thomas Dunne Books | 2013 |
| The fighting sixty-ninth | Mullen, Thomas J. | Article in Journal | | 1969 |
| The final chapter in the House of Galmoy | Butler, Barbara | Article in Journal | | 2016 |
| The final days of Meagher's Irish uprising | Nolan, William | Article in Book | | 2006 |
| The finances of Ireland before the Union and after | Wyndham-Quin, Windham Thomas, 4th Earl of Dunraven | Monograph or Collective Volume | | 1912 |
| The financial aspect of Home Rule | Kettle, Thomas Michael, 1880-1916 | Article in Journal | | 1912 |
| The financial relations of Ireland with the Imperial Exchequer | Shaw, Thomas | Monograph or Collective Volume | Gill | 1911 |
| The Financial Sector | Connor, GregoryFlavin, ThomasO'Kelly, Brian | Article in Book | | 2017 |
| The first Dáil and after | Farrell, Brian | Article in Book | | 1973 |
| The first Dáil and its constitutional documents | Farrell, Brian | Article in Book | | 1994 |
| The first earl of Desmond as other than "Rebellious": a challenge to G.O.Sayles | Fitzgerald, Michael (M.J.)Sayles, George Osborne | Article in Journal | | 2009 |
| The first marquess of Dufferin and Ava, whig, Ulster landlordand imperial statesman | Harrison, Andrew Thomas | Thesis | | 1983 |
| The first Northern Ireland peace process : power-sharing, Sunningdale and the IRA ceasefires, 1972-76 | Hennessey, Thomas | Monograph or Collective Volume | Palgrave Macmillan | 2015 |
| The first ten years of Corofin Poor Law Union, 1850-1860 | MacMahon, Michael | Article in Book | | 2000 |
| The Fitzgeralds of Kildare and the building of a dynastic image, 1500-1630 | Lennon, Colm | Article in Book | | 2006 |
| The Fitzpatrick-Thomas letter of 1840 : the story behind a unique item of Irish postal history | Ferguson, Stephen | Monograph or Collective Volume | An Post | 2012 |
| The five martyrs of Drogheda | Rice, Gerard | Article in Journal | | 1997 |
| The flight of the earls | Mac Curtain, Margaret | Article in Book | | 1986 |
| The flight of the earls in British-Spanish diplomacy | Lennon, Colm | Article in Book | | 2010 |
| The fly in the cathedral : how a group of Cambridge scientists won the international race to split the atom | Cathcart, Brian | Monograph or Collective Volume | Viking | 2004 |
| The folklore of county Waterford | Uí Ógáin, Ríonach | Article in Book | | 1992 |
| The folklore of Irish nationalism | Thuente, Mary Helen | Article in Book | | 1989 |
| The food crisis of the 1890's | O'Neill, Thomas Patrick | Article in Book | | 1989 |
| The forgotten labour struggle : the 1911 Wexford lockout | Roche, Kieran S. | Article in Journal | | 2013 |
| The formation of the Irish economy | | Monograph or Collective Volume | Mercier Press | 1969 |
| The formation of the Irish political élite | Garvin, Tom | Article in Book | | 1994 |
| The formative period in Alabama, 1815-1828 | Abernethy, Thomas Perkins | Monograph or Collective Volume | University of Alabama Press | [1965] |
| The fortune of Thomas Wentworth, earl of Strafford | Cooper, John Phillips | Article in Journal | | 1958 |
| The foundation legend of Laurencekirk revisited | Clancy, Thomas Owen | Article in Journal | | 1999 |
| The founders of the Gaelic Athletic Association | Hurley, James | Article in Journal | | 1960 |
| The founders of the Royal Dublin Society : with illustrations of their houses and a list of members who joined the Dublin Society between 1731 and 1800 | Kelleher, MaryMulligan, Fergus | Monograph or Collective Volume | Royal Dublin Society | 2005 |
| The founding of the Gaelic League | Greene, David | Article in Book | | 1972 |
| The founding of the Gaelic League | McCartney, Donal | Article in Book | | 1986 |
| The founding of the Queen's Colleges : context and origins | Boylan, Thomas A. | Article in Book | | 1999 |
| The fourth class house in 1841 and later | Flynn, Pat | Article in Book | | 2000 |
| The fourth earl of Dunraven, 1841-1926 : a study of his contribution to the emerging Ireland at the beginning of the twentieth century | Spillane, Michael V. | Thesis | | 2003 |
| The Franciscan Brothers in Westport | Thomas, Conal | Article in Journal | | 1999 |
| The Franciscan house in Thurles | Conlan, Patrick, 1940- | Article in Book | | 1989 |
| The Franciscans in Ireland, 1400-1534 | Clabby, Thomas Niall | Thesis | | 1998 |
| The French expedition to Gigeri, 1664 | Ó hAnnracháin, Eoghan | Article in Journal | | 2016 |
| The French invasion of Ireland in 1798 | Dowds, Thomas J.McHale, Conor | Monograph or Collective Volume | IHR Publications | 2000 |
| The full shilling | Liddy, James, 1934- | Monograph or Collective Volume | Salmon Poetry | 2008 |
| The funerary landscape of Clare in space and time | Condit, TomGrogan, Eoin | Article in Book | | 2000 |
| The future of irish medieval studies | Finan, Thomas | Article in Journal | | 2009 |
| The GAA and revolutionary Irish politics in late nineteenth-and early twentieth-century Ireland | Hassan, DavidMcGuire, Andrew | Article in Journal | | 2016 |
| The Gaelic League - a spent force? | Devlin, Brendan | Article in Book | | 1972 |
| The Gaelic League and other national movements | Nowlan, Kevin B. | Article in Book | | 1972 |
| The Gaelic League idea | | Monograph or Collective Volume | Mercier Press | 1973 |
| The Gaelic League idea in the future | Ó Tuama Seán | Article in Book | | 1972 |
| The Gaeltacht | Ó Danachair, Caoimhín, 1913-2002 | Article in Book | | 1969 |
| The Galway American 1862-63 : James Roche and the American civil war | Joyce, Toby | Article in Journal | | 1996 |
| The game of handball | McElligott, Thomas | Article in Journal | | 1960 |
| The game of hurling | O'Gorman, Donal | Article in Book | | 1989 |
| The genealogy of Irish modernism : the case of W.B. Yeats | Heyck, Thomas William | Article in Book | | 2000 |
| The General and his drivers - Eoin O'Duffy's chauffeurs | Traynor, Jack | Article in Journal | | 2025 |
| The general election, 1918 | O'Neill, Thomas Patrick | Article in Journal | | 1968 |
| The ghosts of Ardtrea | Glendinning, James | Article in Journal | | 2006 |
| The Gilbert library and the Dublin city local collection | Dowd, Teresa P. | Article in Journal | | 1978 |
| The glorious seven | O'Kelly, Séamus G. | Monograph or Collective Volume | Newservice | 1965 |
| The gold discovery 1851-1880 and Ireland | Bolton, G. C. (Geoffrey Curgenven) | Article in Book | | 1984 |
| The Gormanston register - Viscount Gormanston, Gormanston Castle, Ireland | Gilbert, J. T. (John Thomas), Sir, 1829-1898 | Article in Book | | 1874 |
| The government of Wentworth, 1632-40 | Clarke, Aidan | Article in Book | | 1976 |
| The grammar school of Thomas Leverous and the town of Adare | Spillane, Milo | Article in Journal | | 2018 |
| The grave-slab of Charles Reynolds in Rome | Manning, Conleth | Article in Journal | | 2010 |
| The grave-stone of Thomas Crosbie alias Godly, 1767 | O'Gorman, Jude | Article in Journal | | 2010 |
| The Gray family of Claremorris, Co, Mayo | Ruttledge, Thomas Ormsby | Article in Journal | | 1989 |
| The great controversy | Ó Fiaich Tomás | Article in Book | | 1972 |
| The Great Famine and Australia | Keneally, Thomas | Article in Book | | 2012 |
| The great famine and Irish politics | Connolly, Sean J. | Article in Book | | 1995 |
| The great famine and today's famines | Ó Gráda, Cormac | Article in Book | | 1995 |
| The Great Famine in Thomastown, 1845-9 | Walsh, Walter | Article in Journal | | 2003 |
| The great importance and necessity of increasing tillage | Publicola [i.e. Thomas Dawson] | Monograph or Collective Volume | | 1754 |
| The great Irish famine | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1995 |
| The Great Irish Famine and Scottish History | Devine, Thomas Martin | Article in Book | | 2008 |
| The great Irish famine, 1845-1852 | O'Neill, Thomas Patrick | Article in Journal | | 1995 |
| The Great Irish Famine, 1845-52 | O'Neill, Thomas Patrick | Article in Journal | | 1947 |
| The great Irish rebellion of 1798 | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1998 |
| The great landowners of Meath, 1879 | Wilson, Thomas M. | Article in Journal | | 1980 |
| The great shame : a story of the Irish in the old world and the new | Keneally, Thomas | Monograph or Collective Volume | Chatto and Windus | 1998 |
| The great shame : and the triumph of the Irish in the English-speaking world | Keneally, Thomas | Monograph or Collective Volume | Nan A. Talese | 1999 |
| The Great War and the Britannic question in Ireland: concepts of national and imperial identity among Irish nationalists and unionists | Hennessey, Thomas William | Thesis | | 1995 |
| The greatest brigade : how the Irish Brigade cleared the way to victory in the American Civil War | Craughwell, Thomas J. | Monograph or Collective Volume | Four Winds | 2011 |
| The greatest knight : the remarkable life of William Marshal, the power behind five English thrones | Asbridge, Thomas | Monograph or Collective Volume | Simon and Schuster | 2015 |
| The greatness of Thomas Davis | MacManus, Francis | Article in Book | | 1945 |
| The green flag in America | Fleming, Thomas | Article in Journal | | 1979 |
| The growth and decline of a medieval suburb? | O'Donovan, Edmond | Article in Book | | 2003 |
| The growth and decline of an industrial city : Belfast from 1750 | Royle, Stephen A. (Stephen Arthur) | Article in Book | | 1995 |
| The growth of government | Walsh, Brendan M. | Article in Book | | 1986 |
| The growth of the Archdiocese of Tuam | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1903 |
| The Hales brothers and the Irish revolution | Gillis, Liz | Monograph or Collective Volume | Mercier | 2016 |
| The hall house at Kilteasheen, Co. Roscommon, Ireland | Thomas, Finan | Article in Journal | | 2010 |
| 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 harpers’ legacy : Irish national airs and pianoforte composers | Hunt, Una | Article in Journal | | 2011 |
| The hearth money roll of 1665 for the city of Kilkenny extracted from "The Kilkenny Moderator" (1892) | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 2001 |
| The heir-apparent in Irish and Welsh law | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1971 |
| The Hibernian academy : an eighteenth-century group experiment in modern education | Sheldon, E. K. | Article in Journal | | 1975 |
| The hidden Dublin : facts connected with the social and sanitary conditions of the working classes in the city of Dublin | Willis, Thomas, 1790-1881, | Monograph or Collective Volume | Trinity College | 2002 |
| The Hidden Dublin facts connected with the social and sanitary condition of the working classes in the City of Dublin | Willis, Thomas | Monograph or Collective Volume | Trinity History Workshop | 2002 |
| The hidden Ireland : women's inheritance | NÍ Dhomhnaill, Nuala | Article in Book | | 1996 |
| The Hill Architects and Queen's College/University College Cork | Ó Riain-Raedel, Dagmar | Article in Journal | | 2020 |
| The historian of "Ballymackasy" | McDonald, Thomas | Article in Journal | | 2005 |
| The historical background | Ryan, John | Article in Book | | 1961 |
| The historical background to Irish art | MacGreevy, Thomas | Article in Journal | | 1944 |
| The historical basis of socialism in Ireland | Brady, Thomas | Monograph or Collective Volume | Cork Workers' Club | 1975 |
| The historical consistency of Berkeley's idealism | Lennon, Thomas M. | Article in Journal | | 2008 |
| The Historical Manuscripts Commission and the Franciscan manuscripts | Gillespie, Raymond | Article in Journal | | 2007 |
| The historical works of Giraldus Cambrensis : containing the topography of Ireland, and the history of the conquest of Ireland; and The itinerary through Wales, and The description of Wales | Forester, ThomasGerald, of Wales, c.1146-1220x23Hoare, Richard Colt, Sir, 1758-1838Wright, Thomas, 1810-1877 | Monograph or Collective Volume | | 1905 |
| The historiography of female religious teachers and schooling in Ireland : a critical review of key works | O'Donoghue, Thomas Anthony | Article in Journal | | 2020 |
| The historiography of the Anglo-Saxon conversion : the state of the art | Pickles, Thomas | Article in Book | | 2016 |
| The history of a Waterford farm | McGrath, Thomas | Article in Journal | | 1976 |
| The history of Doctor Steevens' Hospital, Dublin, 1720-1920 | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Monograph or Collective Volume | University College Dublin Press | 2008 |
| The history of Dr Steevens' Hospital, 1720-1920 | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Monograph or Collective Volume | Ponsonby & Gibbs | 1924 |
| The history of English affairs. Book 2 | Kennedy, M. J.Walsh, P. G. (Patrick Gerard)William, of Newburgh, b. 1135x6, d. in or after 1198 | Monograph or Collective Volume | Aris & Phillips | 2007 |
| The history of Ireland from the invasion of Henry II | Leland, Thomas | Monograph or Collective Volume | | 1773 |
| The history of Ireland from the invasion of Henry II. 3 vols. | Leland, Thomas | Monograph or Collective Volume | | 1773 |
| The history of Loftus Hall, 1871 - centenary year, 1971 | Walsh, Thomas P. | Article in Journal | | 1974 |
| The history of the Castletown collections, 1720-1960 | O'Boyle, Aidan | Article in Journal | | 2017 |
| The history of the county of Mayo to the close of the sixteenth century | Knox, H. T. (Hubert Thomas) | Monograph or Collective Volume | De Búrca Rare Books | 1982 |
| The History of the Huguenot Settlements in Ireland ... | Gimlette, Thomas | Monograph or Collective Volume | | 1888 |
| The history of the Irish confederation and the war in Ireland, 1641-1649. 7 vols. | | Monograph or Collective Volume | | 1882 |
| The history of the suppressed Irish College, Rome, part I: 1798-1808 | Korten, Christopher | Article in Journal | | 2014 |
| The history of the survey of Ireland commonly called the Down survey, 1655-6 | Petty, William, Sir, 1623-1687 | Monograph or Collective Volume | Irish Archaeological Society | 1851 |
| The honest whore, with the humours of the patient man, and the longing wife | Dekker, Thomas | Monograph or Collective Volume | | 1604 |
| The Horgan brothers : the Irish Lumières | Clancy, Darina ; Horgan, Jim ; Horgan Whyte, Patricia | Monograph or Collective Volume | Mercier Press | 2025 |
| The house that Jack Bryan or Jeremiah built | McDonald, Thomas | Article in Journal | | 2003 |
| The house that Tom built | Butler, Patrick Theobald Tower, 28th baron Dunboyne, 1917-2004 | Article in Journal | | 1969 |
| The humors of Quilca : Swift, Sheridan and County Cavan | McMinn, Joseph | Article in Book | | 1995 |
| The Hungarian-Irish 'parallel' and Arthur Griffith's use of his sources | Kardebo, Thomas | Monograph or Collective Volume | St Patrick's College | 1988 |
| The Hungarian-Irish parallel and Arthur Griffith's use of historical sources | Kabdebo, Thomas | Monograph or Collective Volume | [s.n.] | 1988 |
| The hunting of the Clarke | Steemson, Michael | Article in Journal | | 2013 |
| The imagined unities of Thomas Moore | White, Harry | Article in Book | | 2018 |
| The immigrants' influence on Wilson's peace policies | O'Grady, Joseph P. | Monograph or Collective Volume | University of Kentucky Press | 1967 |
| The immortal Irishman : the Irish revolutionary who became an American hero | Egan, Timothy | Monograph or Collective Volume | Houghton Miffin Harcourt | 2016 |
| The impact of English colonial expansion on Irish culture : the clergy, popular religion and the transformation of the family in early modern Galway | Connors, Thomas Gilroy | Thesis | | 1997 |
| The impact of the American Revolution on Ireland | York, Neil Longley | Article in Book | | 1998 |
| The implications of Thomas Wentworth's proposals for a plantation in Connacht and the provincial old English | Duignan, Aoife | Article in Journal | | 2001 |
| The industrialisation of the north-east | Goldstrom, J. M. | Article in Book | | 1969 |
| The inevitable demise of Thomas Bewley | Scannell, James | Article in Journal | | 2008 |
| The infantry of the confederate Leinster army, 1642-47 | Perry, Nicholas | Article in Journal | | 1983 |
| The influence of Jean-Jacques Rousseau on Thomas Moore | Burns, Joanne | Article in Book | | 2015 |
| The influence of Sir Walter Crofton's 'Irish system' on prison reform in Germany | Krause, Thomas | Article in Book | | 2005 |
| The influence of Sir Walter Crofton's 'Irish system' on prison reform in Germany | Krause, Thomas | Article in Book | | 2003 |
| The influence of the landlord in eighteenth century Ulster | Crawford, W. H. (William Henry) | Article in Book | | 1977 |
| The influence of topography on the distribution of the population of Ireland from prehistoric to modern times | Mason, Thomas H. | Article in Journal | | 1939 |
| The inhabitants of the British Isles on the first crusade : medieval perceptions and the invention of a Pan-Angevin crusading heritage | Parsons, Simon Thomas | Article in Journal | | 2019 |
| The intemperate life of Thomas Frederick Collier | Wilson, Lynda | Article in Journal | | 2000 |
| The interface of research, evaluation and policy in Irish education | Kellaghan, Thomas | Article in Book | | 1989 |
| The international almanac of electoral history | Mackie, Thomas T.Rose, Richard | Monograph or Collective Volume | Macmillan | 1991 |
| The interrogation of Gerald Keating: trouble, tension and treason | Empey, Mark | Article in Journal | | 2024 |
| 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 American worker in transition 1877-1914 : New York city as a test case | McKivigan, John R.Robertson, Thomas J. | Article in Book | | 1996 |
| The Irish Ascendancy: decadent overlords or literary buffs? Two Tipperary men of letters | Leahy, Nancy | Article in Journal | | 2018 |
| The Irish at the Jacobite court of Saint-Germain-en-Laye | Corp, Edward T. | Article in Book | | 2001 |
| The Irish at war | Bartlett, Thomas | Article in Book | | 2015 |
| The Irish at war | | Monograph or Collective Volume | Mercier Press | 1964 |
| The Irish Augustine’s knowledge and understanding of scripture | MacGinty, Gerard | Article in Book | | 1995 |
| The Irish Augustinians in Australia, 1839-1992 : Australia remembers St. Patrick's College, Rome | Hunt, Thomas | Article in Book | | 1994 |
| The Irish background to Thomas Campbell's Declaration and Address | Thompson, David Michael | Article in Journal | | 1985 |
| The Irish brigades in the Union army, 1861-65 | Mullen, Thomas J. | Article in Journal | | 1970 |
| The Irish campaign of 1689 and 1690 | Anonymous | Article in Journal | | 1948 |
| The Irish career of an English Highwayman: Captain Swift Nix [or Nicks] (1638-1688) | Harris, Amy Louise | Article in Journal | | 2021 |
| The Irish Catholic narrative : reflections on milestones | Fuller, Louise | Article in Book | | 2011 |
| The Irish clergyman in the United States | McAvoy, Thomas T. | Article in Journal | | 1964 |
| The Irish colleges on the continent and the creation of an educated clergy | Brockliss, Laurence W. B. | Article in Book | | 2010 |
| The Irish community in eighteenth-century Cadiz | Fannin, Samuel | Article in Book | | 2003 |
| The Irish concert soloist | Tinney, Hugh | Article in Book | | 1998 |
| The Irish connection : Wallace Stevens and Thomas McGreevy | Brazeau, Peter | Article in Journal | | 1981 |
| The Irish connection and the birth of Political Economy : Petty and Cantillon | Brewer, Anthony | Article in Book | | 2009 |
| The Irish contribution to America's independence | Maginnis, Thomas Hobbs | Monograph or Collective Volume | | 1913 |
| The Irish convicts in America and Australia | Magner, Thomas F. | Article in Journal | | 1995 |
| The Irish Desert Fox | Lowry, Thomas | Article in Journal | | 2003 |
| 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 Ecclesiastical Record and Maynooth | Wall, Thomas | Article in Journal | | 1945 |
| The Irish economy 1973 to 2016 | O'Hagan, John | Article in Book | | 2018 |
| The Irish economy in the eighteenth century | Cullen, L. M. (Louis Michael) | Article in Book | | 1969 |
| The Irish economy since the war, 1946-1951 | Lynch, Patrick, 1917-2001 | Article in Book | | 1969 |
| The Irish experience | Hachey, Thomas E.Hernon, Joseph M.McCaffrey, Lawrence J., 1925- | Monograph or Collective Volume | Prentice Hall | 1989 |
| The Irish experience since 1800 : a concise history | Hachey, Thomas E.McCaffrey, Lawrence J., 1925- | Monograph or Collective Volume | M.E. Sharpe | 2010 |
| The Irish Famine : genocide | Gallagher, Thomas | Article in Book | | 1987 |
| The Irish Famine in American schools curricula | Archdeacon, Thomas J. | Article in Journal | | 2002 |
| The Irish Franciscans in seventeenth and eighteenth-century Prague | Parez, Jan | Article in Book | | 2003 |
| The Irish Free State and public democracy : The first official visit of William T. Cosgrave to the United States | Carroll, Francis M. | Article in Journal | | 2012 |
| The Irish Free State and the legal implications of Dominion status, 1922-37 | Mohr, Thomas | Thesis | | 2008 |
| The Irish general : Thomas Francis Meagher | Wylie, Paul R. | Monograph or Collective Volume | University of Oklahoma Press | 2007 |
| The Irish House of Commons' rejection of the "Privy Council" money bill in 1769 : a reassessment | Bartlett, Thomas | Article in Journal | | 1979 |
| The Irish in Atlantic Canada, 1780-1900 | | Monograph or Collective Volume | New Ireland Press | 1991 |
| The Irish in Australia, 1945-68 | O'Brien, John | Article in Book | | 1984 |
| The Irish in Boston | O'Connor, Thomas H. | Article in Journal | | 1979 |
| The Irish in Europe, 1580-1815 | | Monograph or Collective Volume | Four Courts | 2001 |
| The Irish in France 1660-90 : the point of no return | O'Ciosáin, Éamon | Article in Book | | 2006 |
| The Irish in New England | O'Connor, Thomas H. | Article in Journal | | 1985 |
| The Irish in New England | O'Connor, Thomas H. | Monograph or Collective Volume | New England Historic Genealogical Society | 1985 |
| The Irish in New England | O'Connor, Thomas H. | Article in Book | | 1985 |
| The Irish in Paris at the end of the ancien régime | Swords, Liam | Article in Book | | 2001 |
| The Irish in Uruguay and Paraguay | Murray, Edmundo | Article in Journal | | 2005 |
| The Irish Institute of Hellenic Studies at Athens | Loughlin, Thomas | Article in Journal | | 2012 |
| The Irish land question, 1830-50 | O'Neill, Thomas Patrick | Article in Journal | | 1955 |
| The Irish language and the languages of the world | Jackson, Kenneth Hurlstone | Article in Book | | 1969 |
| The Irish language in the United States : a historical, sociolinguistic and applied linguistic survey | Ihde, Thomas W. | Monograph or Collective Volume | Bergin & Garvey | 1994 |
| The Irish Liber de numeris | Smyth, Marina | Article in Book | | 1999 |
| The Irish Linen Board, 1711-1828 | Gribbon, H. D. | Article in Book | | 1977 |
| The Irish literary revival | Foster, R. F. (Robert Fitzroy) (Roy), 1949- | Article in Book | | 2018 |
| The Irish marble industry and the Museum Building, Trinity College Dublin | Caulfield, Louise | Article in Book | | 2019 |
| The Irish media and the foundation of the Irish State on 6 December 1922 | Mohr, Thomas | Article in Journal | | 2023 |
| The Irish media and the foundation of the Irish State on 6 December 1922 | Mohr, Thomas | Article in Journal | | 2023 |
| The Irish military establishment, 1660-1776 | Guy, Alan J. (Alan James) | Article in Book | | 1996 |
| The Irish nation-state in the constitution | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1988 |
| The Irish national pilgrimage to Bobbio 1923 | Orschel, Vera | Article in Book | | 2015 |
| The Irish Negative : review article | Thurlow, Richard C. | Article in Journal | | 1997 |
| The Irish novelists, 1800-1850 | Flanagan, Thomas | Monograph or Collective Volume | [s.n.] | 1959 |
| The Irish Order of St Thomas the Martyr of Acre | Byrne, Niall | Article in Journal | | 2009 |
| The Irish Pallottines | McCarthy, Donal | Article in Book | | 1989 |
| The Irish parliament in the early seventeenth century | Kearney, Hugh | Article in Book | | 1973 |
| The Irish parliament of 1692 | McGuire, James | Article in Book | | 1979 |
| The Irish parliamentary diary (1776-89) of Sir Henry Cavendish | Thomas, Peter David Garner | Article in Journal | | 2016 |
| The Irish parliamentary party | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1973 |
| 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 political tradition | Larkin, Emmet | Article in Book | | 1989 |
| The Irish question : the British foreign office and the American political conventions of 1920 | Hachey, Thomas E. | Article in Journal | | 1968 |
| The Irish question in British politics (1916-1922) | Mowat, Charles Loch, 1911- | Article in Book | | 1968 |
| The Irish readers of 'The rights of man', 1790 : 200 anniversary | Ensko, Senan | Article in Journal | | 1991 |
| The Irish Rebellion of 1798 : History and Memory | Dickinson, Harry Thomas | Article in Book | | 2007 |
| The Irish Republican Brotherhood | Connell, Joseph E. A., Jr. | Article in Journal | | 2011 |
| The Irish response to Darwinism | Duddy, Thomas | Article in Book | | 2011 |
| The Irish settlements in post-Roman western Britain : A survey of the evidence | Thomas, Charles | Article in Journal | | 1972 |
| The Irish student diaspora in the sixteenth century and the early years of the Irish College at Salamanca | Morrissey, Thomas J. | Article in Journal | | 1978 |
| The Irish townland system of landscape organisation | McErlean, Thomas | Article in Book | | 1983 |
| The Irish trade union movement in the nineteenth century | D'Arcy, Fergus A., 1943- | Article in Book | | 1994 |
| The Irish tradition and nineteenth century fiction : a review | Sheeran, Patrick | Article in Book | | 1988 |
| The Irish Traveller Movement | McCann, Thomas | Article in Book | | 2000 |
| The Irish vanguard of Rhode Island | Murray, Thomas Hamilton | Article in Journal | | 1904 |
| The Irish workhouses during the Great Famine | O'Neill, Thomas Patrick | Article in Journal | | 1958 |
| The Irish yeomanry and the 1798 rebellion | Blackstock, Allan | Article in Book | | 2003 |
| The islands of Ireland : their scenery, people, life and antiquities | Mason, Thomas H. | Monograph or Collective Volume | Batsford | 1936 |
| The Jerusalem pilgrim. Thomas Whaley (1766-1800) of Castletown and Font Hill, Co. Laois | Ryan, Mary Stratton | Article in Journal | | 2015 |
| The Johnstons of Drumsaragh townland, Co. Londonderry - and Sorrel Ridge, New Brunswick | Moffatt, Thomas F. | Article in Journal | | 2008 |
| The Journal of a disappointed man (1954) | McDowell, R. B. | Article in Journal | | 2012 |
| The journal of an Irish emigrant to Canada | Begley, Donal | Article in Journal | | 1974 |
| The journal of Thomas Moore, 1818-1841 | Moore, Thomas, 1779-1852 | Monograph or Collective Volume | Batsford | 1964 |
| The Journal of Thomas Moore. Volume 1 [1818-1820] | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1983 |
| The Journal of Thomas Moore. Volume 2. 1821-1825 | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1984 |
| The Journal of Thomas Moore. Volume 3. 1826-1830 | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1986 |
| The Journal of Thomas Moore. Volume 4. 1831-1835 | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1987 |
| The Journal of Thomas Moore. Volume 5. 1836-1842 | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1988 |
| The Journal of Thomas Moore. Volume 6. 1843-1847 | | Monograph or Collective Volume | University of Delaware Press|Associated University Presses | 1991 |
| The Journal of Thomas Tasburgh, SJ, 1726-1727 | Clesham, Brigid | Article in Journal | | 2017 |
| The journalist in Canadian politics : a retrospect | Wallace, W. S. | Article in Journal | | 1941 |
| 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 Kells Priory excavations - personal memories of working on the site | Manning, Conleth | Article in Journal | | 2006 |
| The Kelly theatre riot | Power, Victor | Article in Journal | | 1972 |
| The Kelts of Colonial Boston | Ackland, Thomas | Article in Journal | | 1907 |
| The kelts of colonial Boston | Ackland, Thomas | Article in Journal | | 1907 |
| The Kennedys of Massachusetts | Galvin, Edward L. | Article in Book | | 1985 |
| The Kildare rebellion and the early Henrician Reformation | Ellis, Steven G., 1950- | Article in Journal | | 1976 |
| The Kildare Revolt : accident of design? | Jefferies, Henry A. | Article in Journal | | 2004 |
| The Kildare revolt : accident or design? | Jefferies, Henry A. | Article in Journal | | 2004 |
| The Kilkenny Castle clearance sale of 1630: administering the debts of the Scottish Earl of Desmond | Edwards, David | Article in Journal | | 2022 |
| The killing of Thomas Birch, United Irishman, March 1797 and the meeting of the Armagh freeholders, 19 April 1797 | Ó Muirí, Réamonn | Article in Journal | | 1982 |
| The Kilmainham treaty of 1798 | Quinn, James | Article in Book | | 2003 |
| The Kilmichael Ambush, 1920 : Exploring the 'Provocative Chapters' | Ryan, Meda | Article in Journal | | 2007 |
| The Kilshanny bell | Rynne, Etienne | Article in Book | | 2000 |
| The king of the Claddagh | Fitzpatrick, ThomasMorrissey, Una | Monograph or Collective Volume | Mercier Press | 1979 |
| The Kingdom in the empire : a portrait of Kerry during World War One | Martin, Thomas | Monograph or Collective Volume | Nonsuch | 2006 |
| The kingdom of Airghialla and its sub-kingdoms before 1100 | Fee, Thomas, Rev. | Thesis | | 1950 |
| The knights of Glin : seven centuries of change | | Monograph or Collective Volume | Glin Historical Society | 2009 |
| The labour movement in Kerry and Limerick, 1914-21 | Crean, Thomas | Thesis | | 1996 |
| The lady of Birr | MacGreevy, Thomas | Article in Journal | | 1963 |
| The Lally inventory | Ó hAnnracháin, Eoghan | Article in Journal | | 2010 |
| The lamentation of James Walsh | Feeley, Pat | Article in Journal | | 1992 |
| The Lancashire witches and Tegue O Divelly | Shadwell, Thomas | Monograph or Collective Volume | | 1682 |
| The land for the people : the United Irish League and land reform in north Galway and west Mayo,1898-1912 | Thomas, Conal | Article in Journal | | 1999 |
| The land for the people : the United Irish League and land reform in north Galway, 1898-1912 | Thomas, Conal | Monograph or Collective Volume | Annaghdown Heritage Society | 1999 |
| The land of Kildare : valuation, ownership and occupation 1850-1906 | Nolan, William | Article in Book | | 2006 |
| The land question in nationalist politics | Donnelly, James S., Jr | Article in Book | | 1989 |
| The land war | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1986 |
| The landed gentry in decline : a county Carlow perspective | O'Toole, Jimmy | Article in Book | | 2008 |
| The landowner's and agent's practical guide | De Moleyns, Thomas | Monograph or Collective Volume | | 1860 |
| The language and political history | Ó Fiaich, Tomás | Article in Book | | 1969 |
| The language, the census and the Rising : uisce faoi thalamh | Lonergan, Dymphna | Article in Journal | | 2011 |
| The large farm in nineteenth-century Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Book | | 1982 |
| The last rose of summer | Nelson, E. Charles | Article in Journal | | 2000 |
| The last rose of summer : the love story of Tom Moore and Bessy Dyke | Brady, Margaret | Monograph or Collective Volume | Green Hills Publications | 1993 |
| The late Thomas Carley, Ph.C., M.P.S.I. | Kavanagh, Bob | Article in Journal | | 1996 |
| The later medieval versions of 'The Voyage of Colum Cille's Clerics' | Clancy, Thomas Owen | Article in Book | | 2025 |
| The Latin sources of medieval Irish culture | O'Loughlin, Thomas | Article in Book | | 1996 |
| The Latin sources of medieval Irish culture : a partial status quaestionis | O'Laughlin, Thomas | Article in Book | | 1996 |
| The law and the constitution | Newark, F. H. | Article in Book | | 1955 |
| The law of Adomnán : a translation | Ní Dhonnchadha, Máirín | Article in Book | | 2001 |
| The law relating to charities in Ireland | Delaney, V. T. H. | Monograph or Collective Volume | Thomas | 1956 |
| The Lefroy family and the emergence of the Tory Party in County Longford, 1828-'31 | O'Ferrall, Fergus | Article in Journal | | 2006 |
| The legacy of the Alderman | Carden, Sheila | Article in Journal | | 2009 |
| The legacy of the Irish Parliamentary Party in Independent Ireland, 1922-49 | O'Donoghue, Thomas Patrick Martin | Thesis | | 2016 |
| The legacy of the middle ages | Mac Niocaill, Gearóid | Article in Book | | 1988 |
| The Leinster army and the Battle of Dungan's Hill, 1647 | Lenihan, Pádraig, 1959- | Article in Journal | | 1991 |
| The lemmata from the Gospel of Matthew in Clm 6233 and their Irish affinities | Brearley, Denis | Article in Book | | 1999 |
| The letters of Lieutenant Robert Clifford, 1st Punjab Cavalry | Kirwan, John | Article in Journal | | 2006 |
| The letters of Thomas 'Buck' Whaley at Castletown, County Carlow | Monahan, Amy | Article in Journal | | 1994 |
| The letters of Thomas Moore | Moore, Thomas, 1779-1852 | Monograph or Collective Volume | Clarendon Press | 1964 |
| The Liberties and counties of Carlow in the high Middle Ages | Empey, C. A. (Adrian) | Article in Book | | 2008 |
| The libraries of Maynooth College | Corish, Patrick J. | Article in Book | | 1995 |
| The library and reading of Jonathan Swift : a bio-bibliographical handbook | Passmann, Dirk F.Vienken, Heinz J. | Monograph or Collective Volume | Peter Lang | 2003 |
| The library of Iona in the late seventh century : the evidence from Adomnán 'De locis sanctis' | O'Loughlin, Thomas | Article in Journal | | 1994 |
| The library of Thomas Moore, Ireland's national poet | Fitzpatrick, Siobhán | Article in Book | | 2009 |
| The life and adventures of two Drogheda Fenians, Patrick Leonard and John Francis Nugent | Matthews, Brendan | Article in Journal | | 2013 |
| The life and after-life of P.H. Pearse = Pádraic Mac Piarais : saol agus oidhreacht | | Monograph or Collective Volume | Irish Academic Press | 2009 |
| The life and death of Edward Fitzgerald | Moore, Thomas, 1779-1852 | Monograph or Collective Volume | | 1831 |
| The life and death of Thomas Shannon | Cahill, Shane | Article in Journal | | 2017 |
| The life and letters of Lady Sarah Lennox, 1745-1826, daughter of Charles, 2nd duke of Richmond, and successively the wife of Sir Thomas Charles Bunbury, bart., and of the Hon. George Napier; also a short political sketch of the years 1760 to 1763 by Henry Fox, 1st Lord Holland. 2 vols. | | Monograph or Collective Volume | | 1901 |
| The life and opinions of Leonard MacNally (1752-1820) : playwright, barrister, United Irishman, and informer | Bartlett, Thomas | Article in Book | | 2001 |
| The life and politics of Thomas Spring Rice, 1st Baron Monteagle of Brandon, 1790-1866 | Murphy, Charlotte | Thesis | | 1991 |
| 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 Mary Ann McCracken, 1770-1866 | McNeill, Mary | Monograph or Collective Volume | Allen Figgis | 1960 |
| The life and times of the revd. Thomas Conolly Cowan (1776-1856), of Clifton, a "restless and enquiring spirit" or "a wolf in sheep's clothing"? | Crossley Evans, Martin J. | Article in Book | | 2007 |
| The life and times of Thomas Kettle | Sutherland, Richard S. | Article in Journal | | 1982 |
| The life and times of Thomas Kettle | Sutherland, Richard Sage | Thesis | | 1980 |
| The life and times of Thomas Stukeley (c.1525-78) | Tazón, Juan E. | Monograph or Collective Volume | Ashgate | 2003 |
| The life of a Land Agent: Thomas O'Mahony 1833-1897 | Bennet, Gwynneth O'Mahony | Article in Journal | | 2019 |
| The Life of Charles Stewart Parnell, MP., with some account of his ancestry, etc. | Sherlock, Thomas | Monograph or Collective Volume | | 1887 |
| The life of Dr Thomas Hussey (1746-1803), bishop of Waterford and Lismore | Murphy, William Gerald | Thesis | | 1968 |
| The life of Fenian convicts in Australia | Duggan, ThomasWyse, Kieran | Article in Journal | | 1989 |
| The life of James Gandon | Craig, Maurice JamesGandon, James, c.1773-1851Mulvany, T. J. | Monograph or Collective Volume | Cornmarket P. | 1969 |
| The Life of Mr. Robert Blair, minister of St. Andrews, containing his autobiography, 1593 to 1636, with supplement to his life, and continuation of the history of the times to 1680, by his son-in-law, Mr William Row, minister of Ceres | | Monograph or Collective Volume | | 1848 |
| The life of the Very Rev. Thomas N. Burke, O.P. | Fitzpatrick, W. J., 1830-1895 | Monograph or Collective Volume | | 1885 |
| The life of Theobald Wolfe Tone | | Monograph or Collective Volume | Lilliput | 1998 |
| The Life of Thomas Ainge Devyr, Donegal Town | Meehan, Helen | Article in Journal | | 2024 |
| The life of Thomas Hussey, 1746-1803, Bishop of Waterford and Lismore | Murphy, Liam | Monograph or Collective Volume | Kingdom Books | 2016 |
| The Life of Thomas Lally | Greacen, Lavinia | Article in Book | | 2009 |
| The life of Thomas Reynolds. 2 vols. | Reynolds, Thomas | Monograph or Collective Volume | | 1839 |
| The Life of Thomas Wentworth, Earl of Strafford and Lord-Lieutenant of Ireland. 2 vols. | Cooper, Elizabeth | Monograph or Collective Volume | | 1874 |
| The life of William Bulfin, 1863-1910 | Harris, Thomas | Thesis | | 2010 |
| The Limerick watercourse | Jackson, Valentine | Article in Journal | | 1947 |
| The limits of Brown's landscape : translations of the landscape garden into Ireland | O'Kane, Finola | Article in Journal | | 2016 |
| The limits of Old English liberty : the case of Thomas Arthur, MD (1593-1674) in Limerick and Dublin | Lyons, Mary Ann | Article in Book | | 2016 |
| The link between the Earl of Coningsby, Lord Ranelagh and the Earl of Essex in relation to properties in Roscommon town and a list of leases connected with their names | Siggins, Albert | Article in Journal | | 2019 |
| The literary relationship of Lord Byron and Thomas Moore | Vail, Jeffery W. | Monograph or Collective Volume | Johns Hopkins University Press | 2001 |
| The literary scene | Mercier, Vivian | Article in Book | | 1980 |
| The literature of the period | MacManus, Francis | Article in Book | | 1967 |
| The Little Green | Moylan, Thomas King | Article in Journal | | 1946 |
| The lives of Saint Patrick and the Book of Armagh | Bieler, Ludwig | Article in Book | | 1958 |
| The Lord Lieutenant of Ireland and the Irish elections of 1922 | Towey, Thomas | Article in Journal | | 1980 |
| The lost archangel : a new view of Strafford | Wedgwood, Cicely Veronica, Dame, 1910-1997 | Article in Journal | | 1951 |
| The lost houses of Ireland : a chronicle of great houses and the families who lived there | MacDonnell, Randal | Monograph or Collective Volume | Weidenfeld and Nicolson | 2002 |
| The lost leader? Thomas Francis Meagher and the Fenian Brotherhood | McCarthy, Pat | Article in Book | | 2006 |
| The Lost Paradise : an account of the Jesuits in Paraguay, 1607-1768 | Caraman, Philip, 1911- | Monograph or Collective Volume | Sidgwick & Jackson | 1975 |
| The Loughcrew Fires | Hand, Malachy | Article in Book | | 2016 |
| The love story of Annie Hutton and Thomas Davis | O'Connell, Helen | Article in Journal | | 2014 |
| The love story of Thomas Davis told in the letters of Annie Hutton | | Monograph or Collective Volume | Cuala Press | 1945 |
| The lumper : an analysis of its role in the Irish famine, 1845-50 | Downey, Thomas | Article in Journal | | 1996 |
| The Maamtrasna murders : Language, life and death in nineteenth-century Ireland | Kelleher, Margaret | Monograph or Collective Volume | University College Dublin | 2018 |
| The Magners of the Blackwater Valley Cork | Magner, Thomas J. | Article in Journal | | 1986 |
| 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 an Irish-American - Thomas Francis Meagher in the United States, 1852-1865 | Cornish, R. T. | Article in Journal | | 2003 |
| The making of managers : a history of the Irish Management Institute, 1952-2002 | Cox, Thomas | Monograph or Collective Volume | Oaktree Press | 2002 |
| The making of nations in Britain and Ireland in the early middle ages | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2004 |
| The making of the common law | Brand, Paul | Monograph or Collective Volume | | 1992 |
| The Man from God Knows Where: Thomas Russell, 1767-1803 | Carroll, Denis | Monograph or Collective Volume | Gartan | 1995 |
| The Manchester outrage : a Fenian Tragedy | Doughty, Jack | Monograph or Collective Volume | Jade | 2001 |
| The mandarin, the musician and the mage : T.K. Whitaker, Seán Ó Riada, Thomas Kinsella and the lessons of Ireland's mid-twentieth-century revival | Fanning, John, 1944- | Monograph or Collective Volume | Peter Lang | 2022 |
| The manifestations of the Irish Poor Law ideologies in Ulster workhouses, 1838-1855 | Thomas, Elizabeth Anne | Thesis | | |
| The manor of Admekin (Headford) in the thirteenth century | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1900 |
| The manuscripts of His Grace the Duke of Rutland, G.C.B., preserved at Belvoir Castle, 1 : Letters and papers, c.1440-1641; 2 : Letters and papers, 1642-1771, with miscellaneous documents, c.1600-c.1790, inventories, etc., 1369-1787, and extracts from account books, 1557-1612; 3 : letters and papers, 1771-87; 4 : Charters, cartularies, etc., 12th-16th centuries, with court rolls and pedigrees, letters and papers, 1471-1806, extracts from household accounts, 1522-1700, a list of Sir Thomas Lovell's retinue, 1508, returns of artillery, etc. in the marches of Scotland, 1548-9, and travelling expenses, 1552. 4 vols. | Historical Manuscripts Commission | Monograph or Collective Volume | | 1888 |
| The manuscripts of J.B. Fortescue esq., [formerly] preserved at Dropmore, 1 : Papers of Governor Thomas Pitt, 1698-1709, with Pitt family letters and miscellaneous papers to 1779, and correspondence of Lord Grenville, 1782-90; 2 : Grenville correspondence, 1791-4; 3 : 1795-7, with additions, 1787-96, and index and introduction to this and vol. 2; 4 : 1792-Mar. 1799, concerned mainly with the coalition against France and the civil war in Ireland; 5 : Apr.-Oct. 1799, with additions, 1792-9; 6 : Nov. 1799-Mar. 1801; 7 : Feb. 1801-Feb. 1806; 8 : Jan.-Dec. 1806; 9 : 1807-9, with additions 1806-7, edited by R.F. Isaacson. 10 vols. | Historical Manuscripts Commission | Monograph or Collective Volume | | 1892 |
| The many-sided Tom Kettle | Reilly, Niamh | Article in Book | | 2018 |
| The market-book of Thomas Greer, a Dungannon linendraper, 1758-9 | Crawford, W. H. (William Henry) | Article in Journal | | 1967 |
| The marquess and Mycenae | Loughlin, Thomas | Article in Journal | | 2021 |
| The marquess of Ormond, Lord Montgomery of the Ards, and the problem of authority in Ulster, 1649 | Forkan, Kevin | Article in Book | | 2019 |
| The marriage of Thomas Wyse and Lelitia Bonaparte | Holt, Eileen | Article in Journal | | 1979 |
| The massacre of the Boyd | Mackaness, George | Article in Journal | | 1964 |
| The mauve decade : American life at the end of the nineteenth century | Beer, Thomas | Monograph or Collective Volume | Garden City | 1926 |
| The media and Irish culture | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1984 |
| The media, 1945-70 | Gageby, Douglas | Article in Book | | 1979 |
| The medieval bishops of Elphin and the lost church at Kilteasheen | Finan, Thomas | Article in Book | | 2013 |
| The medieval churches and Old Leighlin cathedral in County Carlow | O'Neill, Michael | Article in Book | | 2008 |
| The medieval hospital in Ireland: a comment on the crusader connection | Ivory, Thomas | Article in Book | | 2022 |
| The medieval Irish Church and early Norse Christianity | Martin, Thomas | Thesis | | 2008 |
| The medieval parish churches of County Kildare | O'Neill, Michael | Article in Book | | 2006 |
| The memoirs of lord Edward Fitzgerald | Fitzgerald, Edward, Lord, 1763-1798Moore, Thomas, 1779-1852 | Monograph or Collective Volume | [s.n.] | 1897 |
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O Daly, Máirín | Article in Book | | 1965 |
| The mid nineteenth century Irish landscape | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1962 |
| The mighty exertions of Thomas Russell | Dawson, Kenneth | Article in Book | | 2003 |
| The military career of Thomas North | Davis, H. H. | Article in Journal | | 1949 |
| The Military Pensions Act (1934) na the 3rd Tipperary Brigade: Recent acquisition for Tipperary studies | Darmody, Mary GuinanMarnane, Denis, G. | Article in Journal | | 2012 |
| The military services pensions collection | Gibney, John | Article in Journal | | 2014 |
| The minor orders of knighthood. St Thomas of Acre and St Lazarus of Jerusalem | Marmion, William F. K. | Article in Journal | | 1999 |
| The minority problem in the 26 counties | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1967 |
| The mirror crack'd : refractions from criticism | O'Kelly, Emer | Article in Book | | 2004 |
| The misfortune of an emigrant (the downfall of Lieutenant Thomas Macnamara 1690-1710) | Litton, Francis J. | Article in Journal | | 1986 |
| The Molyneux brothers, the New Science and the Dublin Philosophical Society in the late seventeenth century | Kelly, Patrick | Article in Book | | 2022 |
| The Monasteranenagh miracle (1579) : an Irish legend in a south German abbey church | Stoll, Peter | Article in Book | | 2010 |
| The monastery of Lismore, AD 638-1111 | Sanderlin, Sarah | Article in Book | | 1992 |
| The monastic tide mills of Nendrum | McErlean, Thomas | Article in Book | | 2010 |
| The money bill dispute of 1753 | O'Donovan, Declan | Article in Book | | 1979 |
| The moves and removes of the Tau Cross from Killinaboy | Harbison, Peter | Article in Journal | | 2009 |
| The Mulligan manslaughter case | O'Reilly, Stan J. | Article in Journal | | 2020 |
| The murder of Thomas Connole, I.T.G.W.U. Branch Secretary at Ennistymon, September 1920 | Devine, FrancisMullins, Lisa | Article in Journal | | 2018 |
| The murder of Thomas Douglas Bateson, County Monaghan, 1851 | McMahon, Michael | Monograph or Collective Volume | Four Courts | 2006 |
| The murder of Thomas Hanlon : a 19th-century Dublin labour conspiracy | D'Arcy, Fergus A., 1943- | Article in Journal | | 1971 |
| The murder of Thomas Hodgett, postmaster in Navan 1917-1921 | McCarthy, Liam | Article in Journal | | 2011 |
| The murder of Thomas Hoskins [July 1821] | Dore, M. | Article in Journal | | 1983 |
| The murders of Arthur Prim and John Yates | Patterson, Tony | Article in Journal | | 2018 |
| The Murphys of Rathangan | Burke, Thomas | Article in Journal | | 2016 |
| The Museum Building of Trinity College Dublin : A model of Victorian craftsmanship | | Monograph or Collective Volume | Four Courts Press | 2019 |
| The music of the sentimental nationalist heart : Thomas Moore and Seamus Heaney | Kress, Simon B. | Article in Journal | | 2011 |
| The mystery of 'The Donagh' | O'Grady, Thomas | Article in Journal | | 2015 |
| The myth of 'Silken Thomas' | Brady, Ciarán | Article in Book | | 2016 |
| The myth of insularity and nationality in Ireland | O'Loughlin, Thomas | Article in Book | | 2007 |
| The narrow gauge in Britain and Ireland | Thomas, Clifford John | Monograph or Collective Volume | Atlantic | 2002 |
| The Nation : ideas and politics | Fay, BrianLangtry, Joseph | Article in Book | | 1998 |
| The National Athletic Association of Ireland and Irish athletics, 1922-1937 : steps on the road to athletic isolation | Hunt, Tom | Article in Journal | | 2016 |
| The National Cathedral of St. Patrick, Dublin: discrimination of its ancient architecture and various reparations and discoveries, 1900. The new organ and its place : a report to the Dean and Cathedral Board | Drew, Thomas | Monograph or Collective Volume | Church of Ireland Printing and Publishing Co. | 1900 |
| The national origins of New Yorkers in 1790 | Purvis, Thomas L. | Article in Journal | | 1986 |
| The national struggle 1913-21 : a pictorial record. Part 5 : The men of Kilmichael | Lyons, Michael | Article in Journal | | 1994 |
| The neutrality issue in Anglo-Irish relations during World War Two | Hachey, Thomas E. | Article in Journal | | 1979 |
| The new love poetry | Ó Tuama, Seán | Article in Book | | 1961 |
| The new model army in England, Ireland and Scotland, 1645-1653 | Gentles, Ian | Monograph or Collective Volume | Blackwell Publishers | 1991 |
| The new Oxford book of Irish verse | Kinsella, Thomas E. | Monograph or Collective Volume | [s.n.] | 1989 |
| The non-agricultural working class in nineteenth-century Thomastown | Silverman, Marilyn | Article in Journal | | 1990 |
| The Norman invasion of 1169 | Richter, Michael, 1943-2011 | Article in Book | | 1986 |
| The Normans in Thomond | Westropp, Thomas Johnston | Article in Journal | | 1890 |
| The North and the constitution | Barrington, Dónal | Article in Book | | 1988 |
| The northern flight : Irish soldiers in seventeenth-century Scandinavia | Murdoch, Steve | Article in Book | | 2010 |
| The Northern Ireland peace process : ending the troubles? | Hennessey, Thomas | Monograph or Collective Volume | Gill & Macmillan | 2000 |
| The Northern Lectionary : a source for the Codex Salmanticensis? | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2003 |
| The Ó Bruadair inheritance : some left a name behind them | O'Grady, Thomas B. | Article in Journal | | 2004 |
| The O'Connell mass | MacGreevy, Thomas | Article in Journal | | 1947 |
| The O'Connors | Pierce, Thomas | Article in Journal | | 1956 |
| The O'Haras of Annaghmore c.1600-c.1800 : survival and revival | Bartlett, Thomas | Article in Journal | | 1982 |
| The O'Haras of Annaghmore c.1600-c1800 : survival and revival | Bartlett, Thomas | Article in Book | | 2024 |
| The O'Neills of Ulster : their history and genealogy. 3 vols. | Mathews, Thomas | Monograph or Collective Volume | | 1907 |
| The one true faith : the burials of Bishop Matthew Sanders (d. 1549) and Bishop Thomas Filay (d. 1567) | Thompson, Pat | Article in Book | | 2016 |
| The open secret of Ireland | Kettle, Thomas Michael, 1880-1916Pašeta, SeniaRedmond, J. E. | Monograph or Collective Volume | University College Dublin Press | 2007 |
| The operations of famine relief, 1845-57 | Daly, Mary E. | Article in Book | | 1995 |
| The Orange Society | Carnduff, Thomas | Article in Journal | | 1951 |
| The Order of Deacons in early Irish canonical sources : a contribution to understanding the evolution of a 'Major Orders' in the western church | O'Loughlin, Thomas | Article in Journal | | 2017 |
| The Order of Deacons in early Irish canonical sources : a contribution to understanding the evolution of a ‘Major Orders’ in the Western church | O’Loughlin, Thomas | Article in Journal | | 2017 |
| The Ordnance Survey letters : Wicklow | | Monograph or Collective Volume | Roundwood & District Historical & Folklore Society and Kestrel Books | 2000 |
| The ordnance survey memoirs for the parish of Ballintoy, Co. Antrim (1830) | Hore, Thomas | Article in Journal | | 1985 |
| The organisation and administration of relief during the great famine | O'Neill, Thomas P. | Thesis | | 1946 |
| The organisation and administration of relief, 1845-52 | O'Neill, Thomas Patrick | Article in Book | | 1956 |
| The organisation and administration of relief, 1845-52 | O'Neill, Thomas Patrick | Article in Book | | 1994 |
| The oriental Irish | Jones, Matthew | Article in Journal | | 2014 |
| The origin and development of dominion status as a constitutional settlement in Ireland, 1920-1923 | Towey, Thomas | Thesis | | |
| The origin and early history of the National University | Dillon, Thomas | Article in Journal | | 1955 |
| The origin and growth of towns in Ireland | Jones Hughes, Thomas | Article in Journal | | 1960 |
| The origin and growth of towns in Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1960 |
| The Origin of Ireland's Ordnance Survey | Ó Cionnaith, Finnian | Monograph or Collective Volume | Four Courts Press | 2024 |
| The origin of Irish towns | Simms, Anngret | Article in Book | | 1994 |
| The origin of the Magner surname | Magner, Thomas F. | Article in Journal | | 1996 |
| The origins and character of Irish-American nationalism | Brown, Thomas N. | Article in Journal | | 1956 |
| The origins and development of Bagnalstown, c.1680-1920 | Power, Catherine Ann | Article in Book | | 2008 |
| The Origins and Early Development of the Christian Brothers' Schools in Thurles | Tobin, J.M. | Article in Journal | | 2024 |
| The origins and progress of the Catholic question in Ireland, 1690-1800 | Bartlett, Thomas | Article in Book | | 1990 |
| The origins of Irish immigration to Scotland in the nineteenth and twentieth centuries | Collins, Brenda | Article in Book | | 1991 |
| The origins of the Irish rising of 1916 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Book | | 1968 |
| The origins of the peace process | Hennessey, Thomas | Article in Book | | 2011 |
| The origins of the press in Ireland | Nowlan, Kevin B. | Article in Book | | 1984 |
| The origins of the Treaty on the Non-Proliferation of Nuclear Weapons : Ireland's initiative in the United Nations (1958-61) | Chossudovsky, Evgeny M. | Article in Journal | | 1990 |
| The origins, politics and culture of Irish Unionism c.1880–1916 | Jackson, Alvin | Article in Book | | 2018 |
| The other great Irish famine | Dickson, David | Article in Book | | 1995 |
| The O’Maddens of Silanchia | Madden, Thomas More | Article in Journal | | 1902 |
| The O’Maddens of Silanchia, or Siol Anmachadha, and their descendants, from the Milesian invasion of Ireland to the present time | Madden, Thomas More | Article in Journal | | 1900 |
| The Paine-Burke controversy in eighteeth-century Irish popular songs | Browne, R. B. | Article in Book | | 1964 |
| The Palmerston estate : improvement and assisted emigration before 1850 | Power, Thomas P. | Article in Book | | 2024 |
| The Palmerston estate in county Sligo : improvement and assisted emigration before 1850 | Power, Thomas P. | Article in Book | | 2004 |
| The papers of James Fintan Lalor in the National Library | O'Neill, Thomas Patrick | Article in Journal | | 1948 |
| The paradox of Irish politics | Farrell, Brian | Article in Book | | 1973 |
| The paradox of James Connolly, Irish Marxist socialist (1868-1916) and the Papal social encyclicals (1891-1991) | Morrissey, Thomas J. | Article in Journal | | 1991 |
| The parish and the universe : an Irish enclave on Prince Edward Island | O'Grady, Thomas | Article in Journal | | 2020 |
| The Parish of Ardboe and its church history - from a lecture in 1872 | Twigg, Thomas, Jr | Article in Journal | | 2013 |
| The parish of Inchicronan (Crusheen) | Coffey, Thomas | Monograph or Collective Volume | Ballinakella | 1993 |
| The parliamentary road to independence | Farrell, Brian | Article in Book | | 1994 |
| The Parnell split in Westmeath : The bishop and the newspaper editor | Nolan, Michael | Monograph or Collective Volume | Four Courts Press | 2018 |
| The partition of Ireland and the Ulster dilemma | Hachey, Thomas E. | Article in Book | | 1972 |
| The passing of the Irish parliamentary party (1916-1918) | Lyons, F. S. L. (Francis Stewart Leland) | Article in Book | | 1968 |
| 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 role of the church in the early Irish laws | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 1992 |
| The patent still distillers and the role of competition | Weir, R. B. | Article in Book | | 1977 |
| The patent still distillers and the role of competition | Weit, R. B. | Article in Book | | 1977 |
| The patriot parliament of 1689 | Farrell, Brian | Article in Book | | 1973 |
| The patriot parliament of 1689, with its statutes, roles and proceedings | Davis, Thomas OsborneDuffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1893 |
| The Patterson, Kempster and Shortall Collection in the Irish Architectural Archive | Dunne, Aisling | Article in Journal | | 2001 |
| The peculiar opinions of an Irish Platonist : the life and thought of Thomas Maguire | Duddy, Thomas | Article in Book | | 1998 |
| The peculiarities of place : the Irish historical school | Backhouse Roger | Article in Book | | 2009 |
| The pedigree and succession of the house of Mac Carthy Mór, with a map | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1921 |
| The penal laws against Irish Catholics : were they too good for them? | Bartlett, Thomas | Article in Book | | 2013 |
| The peninsula of Portrane | Moylan, Thomas King | Article in Journal | | 1960 |
| The Pentateuch of the Reference Bible : the problem concerning its sources | MacGinty, Gerard | Article in Book | | 1999 |
| The people of Northern Ireland : an anthropometric survey | Gamble, David P.Mogey, J. M.Walmsley, Thomas | Article in Journal | | 1942 |
| The peoples of Northern Ireland : an anthropometric survey | Mogey, J. M.Walmsley, Thomas | Article in Journal | | 1939 |
| The peoples of Northern Ireland : an anthropometric survey | Walmysley, Thomas | Article in Journal | | 1943 |
| The peoples of Northern Ireland : an anthropometric survey : 4, the town and district of Ballymena | Gamble, David P.Mogey, J. M.Walmysley, Thomas | Article in Journal | | 1946 |
| The peoples of the British Isles : a new history. Vol.2 : from 1688 to 1870 | Heyck, Thomas William | Monograph or Collective Volume | Wadsworth | 1992 |
| The peripatetic activity of Thomas Tresswell, London stationer (fl. c.1440-1470) | James-Maddocks, Holly | Article in Book | | 2018 |
| The persistence of famine in Ireland | O'Neill, Timothy P. | Article in Book | | 1995 |
| The personal and professional relationships between Thomas Wentworth, Earl of Strafford, and his closest advisors | Brownhill, Charlotte Kate | Thesis | | |
| The personal wealth of Northern Ireland, 1920-1960 | Corley, Thomas Anthony Buchanan | Article in Journal | | 1963 |
| The personal, marriage and baptismal register of the Reverend Michael Thomas Merritt, Catholic curate, Dublin, 1800-1805 | | Article in Journal | | 1940 |
| The personality of Carlow: landscape and people | Conry, Michael J. | Article in Book | | 2008 |
| The philosophy of Thomas Davis | Buckley, Mary C. | Thesis | | 1980 |
| The Phoenix Park murders : conflict, compromise and tragedy in Ireland, 1879-82 | Corfe, Thomas Howell | Monograph or Collective Volume | Hodder and Stoughton | 1968 |
| The Phoenix Park murders : conspiracy, betrayal and retribution | Moloney, Senan, 1963- | Monograph or Collective Volume | Mercier | 2006 |
| The pictorial mosaic tiles form Baltinglass Abbey, Co. Wicklow | Fanning, Thomas | Article in Book | | 1987 |
| The place of Dublin in the eighteenth-century Irish economy | Dickson, David | Article in Book | | 1983 |
| The place of Thomas Russell in the United Irish movement | Woods, C. J. (Christopher John) | Article in Book | | 1990 |
| The plan of campaign on the O'Grady estate, Herbertstown, Co. Limerick, 1886-92 | Ó hIarlaithe, Aogán | Article in Journal | | 2013 |
| The plan of the New Jerusalem in the Book of Armagh | O'Loughlin, Thomas | Article in Journal | | 2000 |
| The plantation of Leix and Offaly, 1556-1622 | Dunlop, Robert | Article in Journal | | 1891 |
| The plantations of Ulster | Clarke, Aidan | Article in Book | | 1986 |
| The pleasures and penalties of networking : John Frederick Lampe in the summer of 1750 | Johnston, Roy | Article in Book | | 2004 |
| The plight of the earls : Tyrone and Tyrconnell's 'Grievances' and Crown coercion in Ulster, 1603-7 | Edwards, David, 1963- | Article in Book | | 2010 |
| The poems of Blathmac son of Cú Brettan together with the Irish Gospel of Thomas and a poem on the Virgin Mary | | Monograph or Collective Volume | Irish Texts Society | 1964 |
| The poetry of The Nation, 1842-1848 : a descriptive and critical study with some reference to the influence on the poetic development of W. B. Yeats | Bradley, William | Thesis | | |
| The poetry of Thomas Davis | Fallon, Padraic | Article in Book | | 1945 |
| The polarisation of Protestants and Roman Catholics in rural northern Ireland : a case study of Glenravel Ward, County Antrim, 1956 to 1988 | Kirk, Thomas | Thesis | | |
| The policy of surrender and regrant | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1914 |
| The political and economic policy of Thomas Wentworth | Kearney, Hugh F. | Thesis | | 1955 |
| The political career of Thomas Radcliffe, 3rd Earl of Sussex (1526?-1583) | Doran, Susan | Thesis | | |
| The political ideology of home rule and of the opposition to it | Dunne, Thomas J. | Thesis | | 1972 |
| The political Irish : politicians and rebels | Brown, Thomas N. | Article in Book | | 1980 |
| The political parties and social background | Sayers, John E. | Article in Book | | 1955 |
| The political role of the media in contemporary Ireland | Chubb, Basil | Article in Book | | 1984 |
| The political scene in Northern Ireland, 1926-1937 | McCracken, J. L. | Article in Book | | 1967 |
| The political significance of the coinage of the Irish Free State | Mohr, Thomas | Article in Journal | | 2015 |
| The political significance of the coinage of the Irish Free State | Mohr, Thomas | Article in Journal | | 2015 |
| The politics of Irish literature from Thomas Davis to W. Yeats | Brown, Malcolm Johnston, 1910- | Monograph or Collective Volume | Allen & Unwin | 1972 |
| The politics of Northern Ireland | Hennessey, Thomas | Article in Book | | 2005 |
| The politics of preferment : the marquess of Ormond, Archbishop Ussher and the appointment of Irish bishops, 1643-47 | Little, Patrick | Article in Book | | 2019 |
| The Politics of the Presidency: An Appraisal of the Office of President of Ireland, 1938-1973 | Murphy, Brian | Thesis | | 2014 |
| The politics of troubles memories in Northern Ireland and the Republic of Ireland, 1998 to 2018 | Leahy, Thomas | Article in Journal | | 2019 |
| The politics of war | Bew, Paul | Article in Book | | 2008 |
| The Poor Law in County Carlow, 1838-1923 | Ó Cathaoir, Eva | Article in Book | | 2008 |
| The popular songs of Ireland | | Monograph or Collective Volume | | 1839 |
| The portrait collection in the great hall of the royal hospital, Kilmainham, Dublin | Fenlon, Jane | Article in Book | | 2016 |
| The position of Ulster | Sinclair, Thomas | Article in Book | | 1912 |
| The practice of policing in Ireland | O'Reilly, Thomas J. | Article in Journal | | 1986 |
| The prehistory of county Waterford | Moore, MichaelWoodman, Peter | Article in Book | | 1992 |
| The prehistory of Medieval farms and villages: From Saxons to Scandinavians | Thomas, Gabor | Article in Book | | 2012 |
| The prehistory of the Breifne region | Barron, Thomas J. | Article in Journal | | 1958 |
| The prehistory of Waterford | Moore, MichaelWoodman, Peter | Article in Book | | 1992 |
| The Presbyterian Church in Ireland in the Home Rule era with particular reference to Thomas Dickson and Thomas Sinclair | Murphy, David Alexander | Thesis | | |
| The president, the people and the constitution | Gallagher, Michael | Article in Book | | 1988 |
| The priest and the Protestant woman : the trial of Rev. Thomas Maguire, P.P., Dec. 1827 | Ó Duigneáin, Pronnsíos | Monograph or Collective Volume | Irish Academic Press | 1997 |
| The primatial controversy (1670-1728) : a bibliographical note | Wall, Thomas | Article in Journal | | 1939 |
| The prime informant : the life and times of "the Sham Squire" Francis Higgins (1746-1802) | Bartlett, Thomas | Article in Book | | 1998 |
| The Prince of Orange and the earl of Tyrone | Morrissey, Thomas J. | Article in Journal | | 1960 |
| The Pro-Cathedral altar frontal | Kane, Eileen | Article in Book | | 2012 |
| The problem of equality : women's activist campaigns in Ireland, 1920-1940 | Luddy, Maria | Article in Book | | 2011 |
| The problem of partition : peril to world peace | | Monograph or Collective Volume | Rand McNally | 1972 |
| The problem of the two Patricks | Esposito, Mario | Article in Book | | 1958 |
| The problems of unionist literature : Macaulay, Froude and Lawless | Vance, Norman | Article in Book | | 2001 |
| The professional poets | Greene, David | Article in Book | | 1961 |
| The property records : text and translation | Broun, DauvitClancy, ThomasForsyth, Katherine | Article in Book | | 2008 |
| The Protestant Irish in Scotland | Walker, Graham | Article in Book | | 1991 |
| The provision for conversion in the penal laws, 1695-1750 | McGrath, Charles Ivar | Article in Book | | 2005 |
| The Ps-Jerome Markan commentary : a clue to provenance? | Cahill, Michael | Article in Book | | 1999 |
| The Ps.-Jerome's Expositio IV euangeliorum | Kavanagh, Anne K. | Article in Book | | 1999 |
| The public career of Rev Thomas Maguire, 1792-1847 | Ó Duigneáin, Proinnsíos | Article in Book | | 2019 |
| The published writings of professor T. Jones Hughes | Horner, Arnold | Article in Book | | 1988 |
| The published writings of T.G.F. Paterson esq., O.B.E., M.A., M.R.I.A., curator of the county museum, Armagh, 1935-1963 | Weatherup, D. R. M. | Article in Journal | | 1972 |
| The purpose of the Pale : a view from Kilkenny | Bradley, John, 1954-2014 | Article in Book | | 2011 |
| The Pursuit of Helen Landreth: Robert Emmet, Gender and Historical Scholarship in Mid-Twentieth-Century Ireland | Bartlett, Thomas | Article in Journal | | 2010 |
| The quality of life in seventeenth-century Ireland | Jordan, Thomas E. (Thomas Edward) | Monograph or Collective Volume | Edwin Mellen Press | 2008 |
| The quality of life in Victorian Ireland, 1831-1901 | Jordan, Thomas E. (Thomas Edward) | Article in Journal | | 2000 |
| The quarantine of Archbishop Mannix : a British preventive policy during the Anglo-Irish troubles | Hachey, Thomas E. | Article in Journal | | 1970 |
| The Queensland Irish Association, 1898-1928: heroes and memorials | Sullivan, RobinSullivan, Rodney | Article in Journal | | 2015 |
| The quick and the dead ... in late seventeenth-century Dublin | Jordan, Thomas E. | Article in Journal | | 2008 |
| The race to Promontory | Fleming, Thomas | Article in Journal | | 1971 |
| The radical youth of a conservative : D'Arcy McGee in Young Ireland | Kirwin, Bill | Article in Journal | | 1984 |
| The railways in the Irish economy | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1969 |
| The Rajah from Tipperary | Hennessy, Maurice | Monograph or Collective Volume | Sidgwick & Jackson | 1971 |
| The Ray dynasty : Irish mercantile builders in Ostend, 1690-1790 | Parmentier, Jan | Article in Book | | 2006 |
| The re-creation of community and identity : the Irish in America | Hickey, John | Article in Book | | 1986 |
| The re-invention of the Orange Order : Triumphalism or Orangefest? | Kennaway, Brian | Article in Book | | 2015 |
| The reaction of the British government to the 1922 Collins De Valera pact | Towey, Thomas | Article in Journal | | 1980 |
| The Real Colegio de San Patricio de Nobles Irlandeses of Salamanca : its buildings and properties, 1592-1768 | Almajano, Nieves RupérezSantamaría, Ana Castro | Article in Book | | 2010 |
| The real Molly Macree | Mac Curtain, Margaret | Article in Book | | 1993 |
| The reality of the Anglo-Irish war, 1920-21 in west Cork : Refutations, corrections and comments on Liam Deasy's 'Towards Ireland Free' | Barry, Thomas Bernardine, 1897-1980 | Monograph or Collective Volume | Anvil | 1974 |
| The rebellion in Ireland, 1798 : Letter by the Rev. Adam Averell to the Rev. John Reynolds, Senior, from Jentover Durrow, June 7th, 1798 | Brigden, Thomas E. | Article in Journal | | 1920 |
| The rebellion of 1798 in south Leinster | Gahan, Daniel | Article in Book | | 2003 |
| The rebellious first earl of Desmond | Sayles, George Osborne | Article in Book | | 1961 |
| The reception of Thomas Moore in Italy in the nineteenth century | Minuto, Emanuela | Article in Book | | 2014 |
| The reconstruction of the Church of Ireland : Bishop Bramhall and the Laudian reforms, 1633-1641 | McCafferty, John | Monograph or Collective Volume | Cambridge University Press | 2007 |
| The Red Lad and Blunt - Hacketstown poachers of the early 20th century [Part One]|The Red Lad and Blunt - Hacketstown poachers of the early 20th century (Part Two) | Byrne, Patrick M. | Article in Journal | | 2017 |
| The Reformation in the age of Jefferson | Ingram, Robert G. | Article in Book | | 2021 |
| The regional dimension | Ó Tuathaigh, M. A. G. (Gearóid) | Article in Book | | 1986 |
| The register of the parish church of St Thomas, Dublin 1750 to 1791 | | Monograph or Collective Volume | Representative Church Body Library | 1994 |
| The register of the parish church of St. Thomas, Lisnagarvey, Co. Antrim, 1637-1646 | | Monograph or Collective Volume | Representative Church Body Library | 1996 |
| The relations between the disaffected Irish and Spain in the reign of Elizabeth | Huston, Thomasina | Thesis | | 1937 |
| 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 religious epic | Greene, David | Article in Book | | 1965 |
| The religious question in Ireland | Hammond, Thomas C. | Article in Journal | | 1913 |
| The rental of Holy Trinity abbey, Lough Cé | Clyne, Miriam | Article in Book | | 2010 |
| The Republic | | Monograph or Collective Volume | Mercier Press | 2005 |
| The republicanisation of Irish society, 1932-48 | Girvin, Brian | Article in Book | | 2003 |
| The return of Dr. Gallagher | Ridge, John T. | Article in Journal | | 1987 |
| The return of the native : the United Irishmen, culture and colonialism | Gibbons, Luke | Article in Book | | 2003 |
| The return to Ulster of Thomas Mellon : a pilgrimage | Lambkin, Brian | Article in Journal | | 2002 |
| The Rev. John Rooney | Mitchell, James | Article in Journal | | 1972 |
| The Rev. Thomas Carpendale AM | Dawson, Andrew | Article in Journal | | 2008 |
| The Rev. Thomas Gamble and Robert Emmet | Hammond, Joseph W. | Article in Journal | | 1958 |
| The Reverend David Bell | Bell, Thomas | Article in Journal | | 1967 |
| The Reverend Thomas Goff, 1772-1844 : property, propinquity and Protestantism | Doyle, David | Monograph or Collective Volume | Four Courts | 2015 |
| The revolt of Silken Thomas | Corristine, Laurence A. | Thesis | | 1975 |
| The revolt of Silken Thomas : a challenge to Henry VIII | McCorristine, Laurence | Monograph or Collective Volume | Wolfhound Press | 1987 |
| The rhetoric and reality of Irish neutrality | Hachey, Thomas E. | Article in Journal | | 2002 |
| The rider on the sea-monster; Quid gloriaris in militia | Wright, Rosemary Muir | Article in Book | | 2001 |
| The rights of women under the Constitution of the Irish Free State | Mohr, Thomas | Article in Journal | | 2006 |
| The Ring fishing industry 1890-1926 | O'Donohue, Thomas a. | Article in Journal | | 1981 |
| The rise and fall of the Protestant nation, 1690-1800 | Bartlett, Thomas | Article in Journal | | 1991 |
| The rise of the linen industry | Crawford, W. H. (William Henry) | Article in Book | | 1969 |
| The rise of the port of Liverpool | Parkinson, C. N. | Monograph or Collective Volume | | 1952 |
| The road from Balaclaug to Sebastopol : built by old Leighlin engineer William Thomas Doyle | Horne, D. K. | Article in Journal | | 1998 |
| The road to Avondale : the memoirs of an Irish forester (volume 1) | Briody, Thomas, 1913- | Monograph or Collective Volume | Choice Publishing | 2009 |
| The Roche brothers at war | Roche, Peter | Article in Journal | | 2010 |
| The Rock of Lough Cé, Co. Roscommon | Brady, Niall,Connon, Anne,Fidalgo-Romo, Carlos,O'Conor, Kieran, | Article in Book | | 2010 |
| The rocky road to Tom Boyse's Seaweed | McDonald, Tom | Article in Journal | | 2013 |
| The role of a Cashel man in the abolition of slavery | Dowling, Thomas | Article in Journal | | 2023 |
| The role of Castilian royal bureaucracy in the formation of early-modern Irish literacy | O'Scea, Ciaran | Article in Book | | 2006 |
| The role of graduate physicians in professionalising medical practice in Ireland, c. 1619-54 | Lyons, Mary Ann | Article in Book | | 2010 |
| The role of Irish clerics in Paris University politics 1730-40 | O'Connor, Thomas | Article in Journal | | 1999 |
| The role of St.Thomas's abbey in the early development of Dublin's western suburb | Duddy, Cathal | Article in Book | | 2003 |
| The role of the poor law during the famine | Kinealy, Christine | Article in Book | | 1995 |
| 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 romance of history : renegotiating the past in Thomas Kilroy's "The O'Neill" and Brian Friel's "Making history" | Fogarty, Anne | Article in Journal | | 2002 |
| The romance of the lace pillow, being the history of lace-making in Bucks, Beds., Northants and neighbouring counties, together with some account of the lace industries of Devon and Ireland | Wright, Thomas | Monograph or Collective Volume | | 1919 |
| The Roscommon and Leitrim Gazette 1822-1882 | Lombard, PatMullaney, Thomas | Article in Journal | | 1994 |
| The Rosseters of Rathmacknee Castle : part I, 1169-1627|The Rosseters of Rathmacknee Castle : part II, Colonel Thomas Rosseter (d.1690) to Cecilia Rosseter (d.1881) | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1949 |
| The Rotunda Hospital | Kirkpatrick, Thomas Percy Claude, 1869-1954 | Article in Journal | | 1945 |
| The round hall | Finlay, Thomas A. | Article in Book | | 1996 |
| The Royal British Legion and Dun Laoghaire | Weafer, John | Article in Journal | | 2016 |
| The Royal Cork Institution | McCarthy, Kieran | Article in Book | | 2005 |
| The Royal Irish Constabulary : a history and personal memoir | Fennell, RosemaryFennell, Thomas | Monograph or Collective Volume | University College Dublin | 2003 |
| The ruined church of Killea : a consideration of its date and foundation | Fewer, T. G. (Thomas Gregory) | Article in Journal | | 1996 |
| The Ruttledge families of Co. Mayo | Ruttledge, Thomas Ormsby | Article in Journal | | 1988 |
| The S.S. Kerry Head | McNamara, Patrick J. | Article in Journal | | 2009 |
| The sad story of Thomas Moore | Gamble, Norman | Article in Journal | | 2017 |
| The Sanskrit legacy of Whitley Stokes | Fomin, Maxim | Article in Book | | 2011 |
| The scapegoat and the opportunist : two figures from seventeenth-century Clare | Ó Murchadha, Ciarán | Article in Journal | | 1986 |
| The scientific investigation of the failure of the potato crop in Ireland | O'Neill, Thomas Patrick | Article in Journal | | 1946 |
| The scientific investigation of the failure of the potato crop in Ireland, 1845-6 | O'Neill, Thomas Patrick | Article in Journal | | 1946 |
| The Scots in the Italian peninsula during the Thirty Years War | Marks, Richard Adam | Article in Book | | 2010 |
| The Scots in Ulster : their denization and naturalization, 1605 to 1634. 3 pts. | Stewart, David | Monograph or Collective Volume | Presbyterian Historical Society of Ireland | 1952 |
| The Scottish reformations and the origin of religious and civil liberty in Britain and Ireland: Presbyterian interpretations, c. 1800-60 | Holmes, Andrew R. | Article in Journal | | 2014 |
| The scriptures and early medieval Ireland : proceedings of the 1993 Conference of the Society for Hiberno-Latin Studies on Early Irish Exegesis and Homilectics | | Monograph or Collective Volume | Brepols | 1999 |
| The sculpture of the cloister of Jerpoint abbey | Rae, E. C. | Article in Journal | | 1966 |
| The search for William Joyce | Keenan, Thomas | Article in Journal | | 2002 |
| The seats and demesnes of the nobility and gentry of Ireland | Milton, Thomas | Monograph or Collective Volume | Boethius Press | 1983 |
| The sequence of early Christian period horizontal tide mills at Nendrum monastery : an interim statement | Earwood, Caroline,McErlean, Thomas C.Moore, Dermot,Murphy, Eileen | Article in Journal | | 2007 |
| The sermons, lectures and addresses delivered by the Very Rev. Thomas N. Burke ... in the principal cities of the United States ... | Anonymous | Monograph or Collective Volume | | 1872 |
| The settlers : immigration from Ireland in the nineteenth century | Fitzpatrick, David | Article in Book | | 1984 |
| The Seven : the lives and legacies of the founding fathers of the Irish republic | Edwards, Ruth Dudley | Monograph or Collective Volume | Oneworld | 2016 |
| The seventeenth century city : a topographical study | O'Sullivan, Thomas F. | Article in Journal | | 1982 |
| The several incarnations of Plassey: Plassey House, University of Limerick | Hill, Judith | Article in Journal | | 2009 |
| The shaping of Ireland : the geographical perspective | | Monograph or Collective Volume | Mercier Press in association with Radio Telefís Éireann | 1986 |
| The shaping of modern Ireland | | Monograph or Collective Volume | Routledge & Kegan Paul | 1960 |
| The ship's journal of Captain Thomas Powell, 1642 | | Article in Journal | | 1998 |
| The shouting down of Fr. Thomas Furlong | McDonald, Tom | Article in Journal | | 2006 |
| The siege of Derry | Fraser, Thomas | Article in Journal | | 2000 |
| The siege of Limerick | Macaulay, Thomas Babington, 1st baron Macaulay, 1800-1859 | Article in Journal | | 1990 |
| The Sign of Doctor Hay's Head : being some account of the hazards and fortunes of Catholic printers and publishers in Dublin from the later penal times to the present day | Wall, Thomas | Monograph or Collective Volume | | 1958 |
| The sign of Dr Hay's head | Wall, Thomas | Monograph or Collective Volume | | 1958 |
| The significance and legacy of Spanish intervention in west Munster during the battle of Kinsale | O'Scea, Ciaran | Article in Book | | 2003 |
| The significance of some recent Irish statistics | Finlay, Thomas A. | Article in Journal | | 1912 |
| The significance of the first Dáil | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1994 |
| The six inches to the mile Ordnance Survey Townland map | Hughes, Thomas Jones, 1922-2011 | Article in Journal | | 2011 |
| The Skibbereen Skellig list | O'Brien, GeraldUngoed-Thomas, JasperVickery, Richard | Article in Journal | | 2016 |
| The Smyths of Brookfield | McCandless, Paul | Article in Journal | | 2003 |
| The so-called capitula for the book of the apocalypse in the Book of Armagh (Dublin, Trinity College, 52) and Latin exegesis | O'Loughlin, Thomas | Article in Book | | 2015 |
| The social and economic ideas of O'Connell | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1984 |
| The social background to Irish 'Peregrinatio' | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2000 |
| The social background to Irish peregrinatio | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 1976 |
| The social revolution that never was | Lynch, Patrick, 1917-2001 | Article in Book | | 1968 |
| The social teachings of James Connolly | McKenna, Lambert | Monograph or Collective Volume | Veritas | 1991 |
| The Society of Friends and the Great Famine | O'Neill, Thomas Patrick | Article in Journal | | 1950 |
| 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 in the three kingdoms | McCoog, Thomas M. | Article in Book | | 2008 |
| 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 somewhat heroic biography of Brandub mac Echach | Davies, Morgan Thomas | Article in Book | | 2008 |
| The sources of Moore's melodies | Ní Chinnéide, Veronica | Article in Journal | | 1958 |
| The sovereign ghosts of Thomas Moore | White, Harry | Article in Book | | 2006 |
| The Spanish Armada, Ireland, and Spenser's 'The Faerie Queene' | Herron, Thomas, 1968- | Article in Journal | | 2002 |
| The Spanish Court, Ecclesiastical Patronage, and the Irish College of Santiago de Compostela (1611–17) | O’Scea, Ciaran | Article in Book | | 2018 |
| The spirituality of John Henry Newman | Norris, Thomas | Article in Journal | | 2002 |
| The spy behind the Speaker's chair | Curran, Charles | Article in Journal | | 1968 |
| THe Start of the Ethnographic collection in the Old Museum and its Expansion in the Years 1834-1910 | Glover, Winifred | Article in Book | | 2023 |
| The state of Ireland before 1798 | Dickson, David | Article in Book | | 1998 |
| The Stauntons of Galway in China : Irish Catholic networks and the expansion of the British Empire in Asia | Harrison, Henrietta | Article in Journal | | 2024 |
| The stigma of souperism | Whelan, Irene | Article in Book | | 1995 |
| The stock exchanges of Ireland | Thomas, W. A. | Monograph or Collective Volume | Francis Cairns | 1986 |
| The stone that 'smashed the van' | Joye, Lar | Article in Journal | | 2017 |
| The story of St Peter's Port, Athlone | O'Brien, Gearoid | Article in Journal | | 1996 |
| The story of the Dublin Institute of Technology | Duff, ThomasHegarty, JosephHussey, Matthew | Monograph or Collective Volume | Blackhall Publishing | 2000 |
| The story of the Irish in Argentina | Murray, Thomas Cornelius, 1873-1959 | Monograph or Collective Volume | P. J. Kenedy & Sons | 1919 |
| The story of the Irish in Argentina | Murray, Thomas Cornelius, 1873-1959 | Monograph or Collective Volume | Cork UP | 2011 |
| The story of two monuments | Magner, Michael | Article in Journal | | 1998 |
| The story of Woodstock in Inistioge : the fascinating history of a great Kilkenny estate and the restoration of its magnificent gardens : an account inspired by Thomas Whyte of Cappagh (1888-1961) and incorporating his original material and research | Whyte, Thomas J. | Monograph or Collective Volume | Cappagh Press | 2007 |
| The Strafford inquisition of County Mayo (R.I.A. Ms. 24 E 15) | | Monograph or Collective Volume | Irish Manuscripts Commission | 1958 |
| The strange case of Bishop John Atherton | Winnett, Robert | Article in Journal | | 1988 |
| The strange death of Thomas Francis Meagher : tribal politics in territorial Montana | Emmons, David M. | Article in Book | | 2006 |
| The strange letters of Mathew O'Hartegan, S.J., 1644-45 | Morrissey, Thomas J. | Article in Journal | | 1970 |
| The streets of Dublin | Kelly, Thomas (Tom), Alderman, 1868-1942 | Article in Journal | | 2009 |
| The streets of Dublin 1910-1911 | Kelly, Thomas | Monograph or Collective Volume | Dublin Civic Trust | 2013 |
| The streets of Dublin revisited | Bennett, Douglas | Article in Book | | 1999 |
| The streets of Dublin revisited | Bennett, Douglas | Monograph or Collective Volume | Dublin City Public Libraries | 2003 |
| The Stroan fountain, Kilfane, Co. Kilkenny | McElveen, IvorWilson, Primrose | Article in Book | | 2016 |
| The structure and purpose of Adomnán's Vitae Columbae | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2010 |
| The study of Irish country towns | Andrews, J. H. (John Harwood) | Article in Book | | 1995 |
| The suicides of Thomas Judkin Fitzgerald (1864) and Lord Waterford (1895) | Laragy, Georgina | Article in Book | | 2016 |
| The sum of things | Boyle, J. W. (John William) | Article in Book | | 1966 |
| The summing-up | Williams, T. Desmond | Article in Book | | 1968 |
| The sumptuous silver of Thomas Bolton (1658-1736) | McCormack, John | Article in Journal | | 1995 |
| The support of Connacht's Catholic hierarchy for the Legislative Union of Great Britain and Ireland, 1800 | Hogan, Patrick | Article in Journal | | 2006 |
| The survival of books formerly owned by members of Old English and Gaelic Irish families in the sixteenth and seventeenth centuries | Loeber, Rolf,Stouthamer-Loeber, Magda | Article in Book | | 2011 |
| The Sweetman family | Halpin, Thomas B. | Article in Journal | | 2008 |
| The system of city and county management | O'Halpin, Eunan | Article in Book | | 2001 |
| The T.G.F. Paterson collection at Armagh County Museum | Abraham, A. S. K. | Article in Journal | | 2000 |
| The Táin | Kinsella, Thomas E. | Monograph or Collective Volume | Dolmen Press | 1969 |
| The taking of the earl of Ormonde, 1600 | Jackson, Donald | Article in Journal | | 1975 |
| The tax collector's tale | Foley, Áine | Article in Book | | 2014 |
| The territorial ambitions of Maurice FitzThomas, first earl of Desmond, with particular reference to the barony and manor of Inchiquin, co. Cork | O'Brien, A. F. | Article in Journal | | 1982 |
| The territorial identity of Kildare's landscapes | Duffy, Patrick J. | Article in Book | | 2006 |
| The theology and liturgy of conversion from Catholicism to Anglicanism | Power, Thomas P. | Article in Book | | 2005 |
| The Thomas Davis centenary lecture in Newry | Moody, T. W. (Theodore William), 1907-1984 | Article in Journal | | 1946 |
| The Thomas Davis lectures, 1953-67 | Martin, F. X. (Francis Xavier), 1922-2000 | Article in Journal | | 1967 |
| The Thomas Moore Songbook : Annotated and edited by Una Hunt | Moore, Thomas, 1779-1852 | Monograph or Collective Volume | Peter Lang (Carysfort Press) | 2022 |
| The Thomastown High Crosses - a Cornish connection | Rynne, Etienne | Article in Book | | 1997 |
| The thunder maker : General Thomas Meagher | Bruce, W. M. L. | Monograph or Collective Volume | [s.n.] | 1959 |
| The tithe applotment books as a Co. Kerry genealogical source | O'Connor, Thomas, of County Kerry | Article in Journal | | 1996 |
| The Tom Barry story | Ryan, Meda | Monograph or Collective Volume | Mercier Press | 1982 |
| The tombs of the saints : their significance for Adomnán | O'Loughlin, Thomas | Article in Book | | 2001 |
| The topographical development of Scandinavian and Anglo-Norman Waterford city | Bradley, John, 1954-2014Halpin, Andrew | Article in Book | | 1992 |
| The town walls of Dublin | Healy, Patrick Thomas, 1916-2000 | Article in Book | | 1990 |
| The Townshend viceroyalty | Bartlett, Thomas | Article in Book | | 1979 |
| The Townshend viceroyalty, 1767-72 | Bartlett, Thomas | Thesis | | 1976 |
| The trade union movement in Northern Ireland | Cradden, Terry | Article in Book | | 1994 |
| The traditional view | Ryan, John | Article in Book | | 1958 |
| The training of the Irish Volunteers, 1913-1916 | Gardiner, Eamonn T. (Eamonn Thomas) | Article in Journal | | 2017 |
| The transatlantic colonial context : John Derricke versus Edmund Spenser | Lockey, Brian C., 1968- | Article in Book | | 2021 |
| The transformation of the Dublin society of United Irishmen into a mass-based revolutionary organization, 1791-6 | Graham, Tommy | Article in Book | | 2003 |
| The transformation of the Irish College, Paris: war, education, and administration, 1870–1918 | Stover, Justin Dolan | Article in Book | | 2018 |
| The treaty negotiations | Pakenham, Francis Aungier, 7th earl of Longford, 1905-2001 | Article in Book | | 1968 |
| The trial and transportation of John McNamara for soliciting to murder the Reverend Thomas Brown Brady of Tuamgraney | Coffey, Michael | Article in Journal | | 2000 |
| The trial of Thomas Russell : a legal opinion | Ferguson, Richard | Article in Book | | 2003 |
| The trial of Thomas, earl of Strafford | | Monograph or Collective Volume | [s.n.] | 1680 |
| The trials and tribulations of a field worker | Coffey, Thomas | Article in Book | | 2000 |
| The tribes and other Galway families | O'Neill, Thomas Patrick | Monograph or Collective Volume | Connacht Tribune | 1984 |
| The Tridentine evolution of modern Irish Catholicism, 1563-1962 : a re-examination of the 'devotional revolution' thesis | McGrath, Thomas | Article in Book | | 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 Trinity College school of value and distribution | Moss, Lawrence | Article in Book | | 2009 |
| The trouble with France: Making Scots priests in France, 1818–78 | Saarinen, Iida | Article in Book | | 2018 |
| The Troubles : a photographic essay | Bartlett, Thomas | Article in Book | | 2018 |
| The true, exemplary and remarkable history of the earl of Tirone | Gainsford, Thomas | Monograph or Collective Volume | | 1619 |
| The Truth Teller and Irish Americana of the 1820s | Moriarty, Thomas F. | Article in Journal | | 1964 |
| The tryal of Thomas, Earl of Strafford (1641) | | Monograph or Collective Volume | | 1680 |
| The Tudor state and the Irish of east Leinster, 1535-54 | O'Byrne, Emmett | Article in Book | | 2011 |
| The Tudors and the origins of the modern Irish states : a standing army | Ellis, Steven G., 1950- | Article in Book | | 1996 |
| The two economies in Ireland in the twentieth century | Johnson, D. S. | Article in Book | | 2003 |
| The two faces of Irish industrial relations | Fogarty, Michael | Article in Book | | 1986 |
| The Uí Néill 695-743 : the rise and fall of dynasties | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Journal | | 2002 |
| The Ulster Covenant and the pulse of Protestant Ulster | Walker, Graham S. | Article in Journal | | 2016 |
| The Ulster earls and baroque Europe : refashioning Irish identities, 1600-1800 | | Monograph or Collective Volume | Four Courts | 2009 |
| The Ulster railway, 1835-1848 | Ferris, Thomas Gerard | Thesis | | 1980 |
| The Ulster Volunteer Force: its domestic development and political importance in the period 1913 to 1920 | Foy, Michael Thomas | Thesis | | 1986 |
| The unfaithful steward : Thomas Spaight of Bunratty Lodge | Ó Murchadha, Ciarán | Article in Journal | | 1987 |
| The United Irishmen and the re-invention of Irish America | Wilson, David A. | Article in Book | | 2003 |
| The United Irishmen and the Wexford rebellion : the sources re-examined | Powell, Thomas | Article in Journal | | 1998 |
| The United Irishmen, music, harps, and national identity | Boydell, Barra | Article in Journal | | 1998 |
| The United Irishmen, their lives and times. 7 vols. | Madden, Richard Robert | Monograph or Collective Volume | J. Madden & Co. | 1842 |
| The United States of America : the Irish layman | Brown, Thomas N. | Monograph or Collective Volume | Gill & Macmillan | 1970 |
| The university in a divided society | Fraser, Thomas G. | Article in Book | | 2009 |
| The University of Ulster : genesis & growth | | Monograph or Collective Volume | Four Courts | 2009 |
| The unpublished letters of T. Crofton Croker | Croker, Thomas Crofton, 1798-1854Curtis, Edmund, 1881-1943 | Article in Journal | | 1941 |
| The unreal republic | O'Toole, Fintan | Article in Book | | 2005 |
| The Ursulinés in Thurles : the first hundred years, 1787-1887 | Lillis, Mercedes | Article in Book | | 1989 |
| The venue and commemorations of the first Volunteer Convention in Dungannon on 15th February 1782 | Gilmore, Brian | 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 Viceroys visit The Heath | Hyland, Jackie
| Article in Journal | | 2014 |
| The Victorians, the Americans and the decline of Spain | Brady, Ciarán | Article in Book | | 2006 |
| The Viscount Weymouth Grammar School: Letters from past pupils | McDermot, Larry | Article in Journal | | 2017 |
| The visit of Reverend Thomas Goff to Bunclody, 1806 | de Vál, Séamus S. | Article in Journal | | 2010 |
| The Vocacyon of Johan Bale and early English Autobiography | Fairfield, L. P. | Article in Journal | | 1971 |
| The vocations of Lieutenant-Colonel Coghlan's two daughters | Ó hAnnracháin, Eoghan | Article in Journal | | 2008 |
| The Voice of the Provinces: The regional press in Revolutionary Ireland, 1914-1921 | Doughan, Christopher | Monograph or Collective Volume | Liverpool University Press | 2019 |
| The Volunteers and parliament, 1779-84 | Smyth, P. D. H. | Article in Book | | 1979 |
| The voting lists for the Irish House of Commons | Thomas, Peter David Garner | Article in Journal | | 1988 |
| the wages of bigamy (1663) | O'Connor, Thomas | Article in Book | | 2019 |
| The Waldron sword | Waldron, Liam | Article in Journal | | 1997 |
| The walled towns of Ireland | Thomas, Avril | Thesis | | 1989 |
| The walled towns of Ireland | Thomas, Avril | Thesis | | |
| The walled towns of Ireland. 2 vols. | Thomas, Avril | Monograph or Collective Volume | | 1992 |
| The war of independence in Limerick, 1912-1921 | Toomey, Thomas | Monograph or Collective Volume | Thomas Toomey | 2010 |
| The Wards of Coles Lane and Moore Street | Burke, Thomas A. | Article in Journal | | 2016 |
| The wars of religion, 1603-1660 | Ohlmeyer, Jane H. | Article in Book | | 1996 |
| The Waterford colony in Newfoundland, 1700-1850 | Byrne, Cyril J. | Article in Book | | 1992 |
| The way back from Rome | Purcell, Mary | Article in Journal | | 1979 |
| The well-travelled 'Wild Rover' | Peters, Brian | Article in Journal | | 2015 |
| The western suburb of medieval Dublin : its first century | Duddy, Cathal | Article in Journal | | 2001 |
| The Weymouth School: Letters from Past Pupils, part II | McDermott, Larry | Article in Journal | | 2019 |
| The White Knights of Munster | Lee, Robert | Article in Journal | | 2008 |
| The wider Castletown: the designed landscape of the Wonderful Barn and Barn Hall | Ó Drisceoil, Cóilín | Article in Journal | | 2017 |
| The widow Mulcahy : from the Golden Vale to the Goulburn valley | Flanagan, ThomasMulcahy, John Stanislaus | Article in Journal | | 1988 |
| The will of Friar Martin, 1842 | Martin, Thomas | Article in Journal | | 1952 |
| The will of Robert Forstall of Kilferagh, 1645 | | Article in Journal | | 1993 |
| The Williamite war, 1689-1691 | Childs, John, 1949- | Article in Book | | 1996 |
| The Wilson administration and the 1916 Rising | Whelan, Bernadette | Article in Book | | 2008 |
| The Wilson family - Croesi of Dublin | McMahon, Enda | Article in Journal | | 2016 |
| The women of 1798 : explaining the silence | Keogh, Dáire | Article in Book | | 2003 |
| The women writers of 'The Nation' | O'Toole, L. M. | Article in Book | | 1945 |
| The work of Carlow College since 1793 | Brophy, Thomas F. | Article in Journal | | 1960 |
| The workhouse child in Thurles, 1840-80 | Lanigan, Anne | Article in Book | | 1989 |
| The workhouse system in county Waterford, 1838-1923 | Kinealy, Christine | Article in Book | | 1992 |
| The works of George Berkeley, Bishop of Cloyne | | Monograph or Collective Volume | | 1948 |
| The world in Paris and Ireland too : The French diplomacy of Sinn Féin, 1919-1921 | Ranger, Pierre | Article in Journal | | 2011 |
| The world of Adomnán | Herbert, Máire | Article in Book | | 2001 |
| The world of Thomas Ward: sex and scandal in late seventeenth-century Co. Antrim | Darcy, Eamon | Monograph or Collective Volume | Four Courts | 2016 |
| The wounding of Meredith Chambre | McKeown, Thomas | Article in Journal | | 1979 |
| The year of liberty : the great Irish rebellion of 1798 | Pakenham, Thomas | Monograph or Collective Volume | Weidenfeld and Nicolson | 1997 |
| The year of liberty : the story of the great Irish rebellion of 1798 | Pakenham, Thomas | Monograph or Collective Volume | Hodder and Stoughton | 1969 |
| The years of the great test, 1926-39 | | Monograph or Collective Volume | Mercier Press in collaboration with RTE | 1967 |
| The young Yeats | Davie, Donald | Article in Book | | 1960 |
| The ‘British Establishments’, the Irish college in Paris and Restoration France, 1814–30 | Chambers. Liam | Article in Book | | 2018 |
| The ‘unforgivable’? : Irish Republican Army (IRA) informers and dealing with Northern Ireland conflict legacy, 1969-2021 | Leah Williams, Eleanor ; Leahy, Thomas | Article in Journal | | 2023 |
| Theatre beyond the Black Pig's Dyke : Ulster drama | Henderson, Lynda | Article in Book | | 2004 |
| Theatrical unrest : nine riots in the history of the stage, 1601-2004 | McEvoy, Sean | Monograph or Collective Volume | | 2016 |
| Theo Mortimer 1931-2008 | C., D. L. | Article in Journal | | 2008 |
| Theobald Wolfe Tone | Bartlett, Thomas | Monograph or Collective Volume | Dundalgan Press for the Historical Association of Ireland | 1997 |
| Theobald Wolfe Tone | Bartlett, Thomas | Article in Book | | 1998 |
| Theobald Wolfe Tone and County Kildare | Woods, C. J. (Christopher John) | Article in Book | | 2006 |
| Theobald Wolfe Tone and Irish republicanism and separatism | Bartlett, Thomas | Article in Book | | 2005 |
| Theorising sedentarism: The roots of anti-nomadism | McVeigh, Robbie | Article in Book | | 1997 |
| Theory, method and the Irish revolution | Thomas, Jim | Article in Journal | | 1974 |
| Ther Dublin District Surveyors, 1844-1924 | O'Donoghue, Brendan | Article in Journal | | 2019 |
| There you are : writings on Irish and American literature and history | Cahill, ChristopherFlanagan, Thomas | Monograph or Collective Volume | New York Review of Books | 2004 |
| Thesis abstract : Bishop Thomas Lewis O’Beirne and his church-building programme in
the diocese of Meath, 1798–1823 | Gallagher, M. Caroline | Article in Journal | | 2010 |
| Thesis abstract : Kildare County Council, 1899–1926 | Nelson, Thomas P. | Article in Journal | | 2009 |
| Thine is the kingdom : the trial for treason of Thomas Wentworth, earl of Strafford, first minister to King Charles I, and last hope of the English Crown | Timmis, J. H. | Monograph or Collective Volume | | 1974 |
| Thinking Ireland : cultural nationalism and the problem of Irish ideas | Duddy, Thomas | Article in Journal | | 2003 |
| Thirty years a-growing: environmental archaeology in Ireland | McClatchie, Meriel | Article in Journal | | 2017 |
| This sporting life : anything to declare? Community allegiance, sports and the National Question | Burgess, Thomas Paul | Article in Book | | 2015 |
| 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. Cobden, 1794-1842 : an architect in County Carlow | McDonnell, Thomas | Article in Book | | 2008 |
| Thomas A. Finlay S.J., 1848-1940 : educationalist, editor, social reformer | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2004 |
| Thomas Albert Lambert | Anonymous | Article in Journal | | 2006 |
| Thomas Andrews shipbuilder : a hero of the Titanic | Bullock, Shan F. [i.e. Bullock, John William] | Monograph or Collective Volume | Blackstaff Press | 1999 |
| Thomas Andrews, 1813-1885 | Burns, D. Thorburn (Duncan Thorburn) | Article in Book | | 2003 |
| Thomas Antisell, 1817-1893 | Reilly, D. | Article in Journal | | 1954 |
| Thomas Arnold junior : a biographical sketch | Chorley, K. | Article in Journal | | 1954 |
| Thomas Ash : author of 'A circumstantial journal of the siege of Londonderry' | Bartlett, IanHamilton, Roy, 1943- | Article in Journal | | 1990 |
| Thomas Ashe | Ó Lúing, Seán | Article in Journal | | 1967 |
| Thomas Ashe : a lost leader | Ó Moráin, Micheál | Article in Book | Irish Historical Publications | 2016 |
| Thomas Ashe and Ireland's Hunger Strikes: Centenary of the Death of the First Hunger-Striker 1917-2017 | No Author | Monograph or Collective Volume | Sinn Féin | 20 |
| Thomas Ashe dies after force-feeding, 25 September 1917 | Connell, Joseph E.A., Jr | Article in Journal | | 2017 |
| Thomas Barbour and the American linen-thread industry | Green, E. R. R. | Article in Book | | 1982 |
| Thomas Bateson and the earliest degrees in music awarded by the University of Dublin | Boydell, Brian | Article in Journal | | 1989 |
| Thomas Beckett and Ireland | Staunton, MichaelÓ Clabaigh, Colmán N. | Article in Book | | 2011 |
| Thomas Bermingham : Nineteenth-century Irish land agent and ‘improver’ | Smith, Cathal | Monograph or Collective Volume | Four Courts Press | 2018 |
| Thomas Berry (1805-1877). Connacht evangelist extraordinary | Dunlop, Robert | Article in Journal | | 1986 |
| Thomas Braughall, 1729-1803, Catholic emancipationist | Hammond, J. W. | Article in Journal | | 1956 |
| Thomas Brehun (1582-1647) and Maurice Brehun (1588-1633) | Hazard, Benjamin | Article in Journal | | 2019 |
| Thomas Browne, at The Three Candles | Ó Lochlainn, Colm, 1892-1972 | Article in Journal | | 1954 |
| Thomas Burgh's Naas map-book | Costello, Con | Article in Journal | | 1987 |
| Thomas Butler 10th earl of Ormond : his early career and rise to prominence. Part 11 | Kirwan, John | Article in Journal | | 1997 |
| Thomas Butler R. M. 1837-1920 | Stead, W. T. | Article in Journal | | 1980 |
| Thomas Butler, 10th earl of Ormond | Kirwan, John | Thesis | | 1993 |
| Thomas Butler, 10th Earl of Ormond. His early career and rise to prominence : Part I | Kirwan, John | Article in Journal | | 1994 |
| Thomas Butler, earl of Ormond (1531-1614) and reform in Tudor Ireland | Brady, Ciarán | Article in Book | | 1989 |
| Thomas Butler, Earl of Ossory, 1634-80 : A Privileged Witness | Jordan, Daniel D. | Monograph or Collective Volume | Four Courts Press | 2022 |
| Thomas Butler, tenth earl of Ormond (c.1532-1614) : his stewartship of the family estates | Kirwan, John | Article in Book | | 1997 |
| Thomas Campbell's "Exile of Erin" : English poem, Irish reactions | Molloy, Frank | Article in Book | | 2006 |
| Thomas Campion : Irishman and catholic | Flood, William Henry Grattan | Article in Journal | | 1922 |
| Thomas Carlyle : a descriptive bibliography | | Monograph or Collective Volume | | 1989 |
| Thomas Carlyle and Famine Ireland | Crowley, John | Article in Book | | 2012 |
| Thomas Carlyle and Ireland | Swift, Roger | Article in Book | | 2004 |
| Thomas Carlyle's "The Negro Question" : black Ireland and the rhetoric of famine | Mackenzie, C. G. | Article in Journal | | 1997 |
| Thomas Carlyle, 'Young Ireland', and the 'Condition of Ireland Question' | Morrow, John, 1951- | Article in Journal | | 2008 |
| Thomas Carnduff 1886-1956 | Grey, John | Article in Journal | | 1978 |
| Thomas Carnduff, 1886-1956 | Gray, John | Article in Journal | | 1978 |
| Thomas Carr in Ireland | Boland, T. P. | Article in Journal | | 1991 |
| Thomas Cavanagh (1872-1961 | | Article in Journal | | 2010 |
| Thomas Chalmers and Ireland | Holmes, Finlay | Monograph or Collective Volume | Presbyterian Historical Society of Ireland | 1980 |
| Thomas Chalmers and Irish poverty | Gray, Peter, 1965- | Article in Book | | 2009 |
| Thomas Chaplin and other Kilkenny cabinet makers | Law, Edward J. | Article in Journal | | 2010 |
| Thomas Charles Wright : soldier of Bolivar; founder of the Ecuadorian navy | Ireland, John de Courcy, 1911-2006 | Article in Journal | | 1964 |
| Thomas Clarke returns to Dublin (Countdown to 2016) | Connell, Joseph E. A., Jr. | Article in Journal | | 2012 |
| Thomas Clarke's signature, No. 16 Moore Street | Joye, Lar | Article in Journal | | 2016 |
| Thomas Cloney letters, 1815-1819, auctioned in America in 2001 | Joyce, John | Article in Journal | | 2006 |
| Thomas Colin McGinley (1830-187) | Mac Cuinneagáin, Éanna | Article in Journal | | 2003 |
| Thomas Colin McGinley (1830-1887) | Mac Cuinneagáin, Éanna | Article in Book | | 2000 |
| Thomas Coneys : first professor of Irish in T.C.D | Jennings, Catherine | Article in Journal | | 1995 |
| Thomas Conolly (1823-76) of Castletown House and the social networking of power | Pegley, Suzanne M. | Monograph or Collective Volume | Four Courts Press | 2022 |
| Thomas Cook of Leicester | Simmons, Jack | Article in Journal | | 1975 |
| Thomas Cooley before the Dublin Royal Exchange | Thorpe, Ruth | Article in Journal | | 2005 |
| Thomas Costello and O'Rourke's wife | Carney, James Patrick, 1914-1989 | Article in Journal | | 1950 |
| Thomas Crofton Croker 1798-1854 | MacCarthy, B. G. | Article in Journal | | 1943 |
| Thomas Cromie at the Battle of Waterloo | Harding, Barbara | Article in Journal | | 2015 |
| Thomas Cromwell and Ireland, 1532-1540 | Ellis, Steven G., 1950- | Article in Journal | | 1980 |
| Thomas Cromwell: A Life | MacCulloch, Diarmaid | Monograph or Collective Volume | Allen Lane | 2018 |
| Thomas Crowe of Mount Bruis | O'Donoghue, Nicole | Article in Journal | | 1994 |
| Thomas D'Arcy McGee : a commemoration, 1998 : recalling the escape of D'Arcy McGee to America, Septmeber 1998 | Beattie, Sean | Monograph or Collective Volume | Lighthouse Publications | 1998 |
| Thomas D'Arcy McGee : Irish founder of the Canadian nation | Davis, William | Article in Book | | 1988 |
| Thomas D'Arcy McGee : the prophet of Canadian nationality | Harvey, Daniel Cobb | Monograph or Collective Volume | [s.n.] | 1923 |
| Thomas D'Arcy McGee : turning points in the life of a nationalist | Kirwin, William | Article in Book | | 1988 |
| Thomas D'Arcy McGee and Charles Gavin Duffy's "The Irish Chiefs" : diasporic trajectories of a Young Ireland text | Lambkin, Brian | Article in Journal | | 2005 |
| Thomas D'Arcy McGee and his sisters and brother in Ireland, America and Australia : their mother's grave in Wexford | Meegan, BrendanMeegan, Jenny | Article in Journal | | 2005 |
| Thomas D'Arcy McGee's speech : prelude to an assassination | Browne, Bernard | Article in Journal | | 1992 |
| Thomas D'Arcy McGee's Wexford speech of 1865 : reflections on revolutionary republicanism and the Irish in North America | Wilson, David A. | Article in Journal | | 2001 |
| Thomas D'Arcy McGee, visionary of the welfare state in Canada | Kirwin, Bill | Monograph or Collective Volume | University of Calgary Faculty of Social Welfare | 1981 |
| Thomas D'Arcy McGee, Volume 1 : passion, reason, and politics, 1825-1857 | Wilson, David A. | Monograph or Collective Volume | McGill-Queen's University Press | 2008 |
| Thomas D'Arcy McGee, Volume 2 : the extreme moderate, 1857-1868 | Wilson, David A. | Monograph or Collective Volume | McGill-Queen's University Press | 2012 |
| Thomas Darragh - a Wicklow military Fenian escapes from Freemantle | O'Reilly, Vincent | Article in Journal | | 2002 |
| Thomas David Sinnott (1893-1965) : patriot, poet, orator, historian, Irish speaker, writer, intellectual, Wexford's first County Manager | Williams, Tom | Article in Journal | | 2010 |
| Thomas Davis | McHugh, Roger Joseph | Article in Journal | | 1945 |
| Thomas Davis | Hone, Joseph Maunsell, 1882-1959 | Monograph or Collective Volume | | 1934 |
| Thomas Davis | Clifford, BrendanDuffy, Charles Gavan, Sir | Monograph or Collective Volume | Aubane Historical Society | 2000 |
| Thomas Davis & Daniel O'Connell. marble statues by John Hogan in Dublin City Hall | Sheehan, Tim | Article in Journal | | 2009 |
| Thomas Davis (1814-1845) | Langtry, Joseph | Article in Book | | 1998 |
| Thomas Davis : 1814-1845 | Tierney, Michael | Article in Journal | | 1945 |
| Thomas Davis : a study in nationalist philosophy | Buckley, Mary | Article in Journal | | 1982 |
| Thomas Davis : essays and poems with a centenary memoir, 1845-1945 | Davis, Thomas J.De Blacam, Aodh | Monograph or Collective Volume | Gill | 1945 |
| Thomas Davis : Irish Romantic idealist | Molony, John N. | Article in Book | | 1996 |
| Thomas Davis and his circle | Ahern, J. L. | Monograph or Collective Volume | | 1945 |
| Thomas Davis and Ireland : a biographical study | Mulvey, Helen F. | Monograph or Collective Volume | Catholic University of America Press | 2003 |
| Thomas Davis and Irish Ireland | Ó Corcora, Domhnall | Article in Book | | 1942 |
| Thomas Davis and the Gaelic tongue | Mehigan, P. D. | Article in Journal | | 1945 |
| Thomas Davis and the Indian Empire : The Liberalism of Young Ireland | Davis, Richard | Article in Journal | | 1980 |
| Thomas Davis and the Irish nation | Moody, T. W. (Theodore William), 1907-1984 | Article in Journal | | 1966 |
| Thomas Davis and the Patriot Parliament of 1689 | Quinn, James | Article in Book | | 2009 |
| Thomas Davis and Tipperary | Boland, Tim | Article in Journal | | 2015 |
| Thomas Davis and Young Ireland | | Monograph or Collective Volume | The Stationery Office | 1945 |
| Thomas Davis as a military influence | Bryan, Dan | Article in Journal | | 1945 |
| Thomas Davis et la nation irlandaise | Saison, Ghislaine | Article in Journal | | 2002 |
| Thomas Davis Looney : Blarney's first representative in Dáil Éireann | Gabriel, Brian | Article in Journal | | 1999 |
| Thomas Davis's family and social life | Hone, Joseph Maunsell, 1882-1959 | Article in Book | | 1945 |
| Thomas Davis, 1814-45. A centenary address delivered in Trinity College, Dublin, on 12 June 1945, at a public meeting of the College Historical Society | Moody, T. W. (Theodore William), 1907-1984 | Monograph or Collective Volume | Hodges Figgis | 1945 |
| Thomas Davis, 1815-1845 | Dillon, T. | Article in Journal | | 1945 |
| Thomas Davis, nation builder | MacManus, M. J. | Monograph or Collective Volume | Glún na Buaidhe | 1945 |
| Thomas Davis, the memoirs of an Irish patriot, 1840-1846 | Duffy, Charles Gavan, Sir | Monograph or Collective Volume | | 1890 |
| Thomas Davis, the thinker and teacher, the essence of his writings in prose and poetry | | Monograph or Collective Volume | Gill | 1914 |
| Thomas Davis. The conservation of a tradition | Alvey, David | Article in Journal | | 1996 |
| Thomas Davis: a bicentenary assessment | Murphy, John A. | Article in Journal | | 2014 |
| Thomas de Rokeby, sheriff of Yorkshire, justiciar of Ireland | Frame, Robin | Article in Journal | | 1996 |
| Thomas Dease, Bishop of Meath (1622-1651) : his life and times | Fagan, Patrick, 1922-2011 | Article in Journal | | 2006 |
| 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 Denton : a perambulation of Cumberland 1687-1688 ; including descriptions of Westmorland, the Isle of Man and Ireland (Cumbria Record Office MS D/Lons/L12/4/2/2) | Denton, Thomas, 1637-1698Wane, MaryWinchester, Angus J. L. | Monograph or Collective Volume | Boydell | 2003 |
| Thomas Denton’s perambulation : two counties, three kingdoms, and four nations history? | McArthur, Euan David | Article in Journal | | 2021 |
| Thomas Dermody, 1775-1802 : another letter | Mabbott, T. O. | Article in Journal | | 1939 |
| Thomas Dermody, Robert Burns and the Killeigh Cycle | Dornan, Stephen | Article in Journal | | 2005 |
| Thomas Devine (1840-1922) | Magee, Seán | Article in Journal | | 1995 |
| Thomas Dongan : soldier and statesman. Irish-Catholic Governor of New York, 1683-1688 | Browne, P. W. | Article in Journal | | 1934 |
| Thomas Dongan : soldier and statesman. Irish-Catholic Governor of New York, 1683-1688 | Browne, P. W. | Article in Journal | | 1934 |
| Thomas Dowglass (1806-57) - evangelist | Grass, Tim | Article in Journal | | 2006 |
| Thomas Dowling’s hearse | McEvoy, Dan | Article in Journal | | 1996 |
| Thomas Drane. Professor of Civil Engineering, Queen's College Galway, 1849 | Mitchell, James | Article in Journal | | 2007 |
| Thomas Drew and the making of Victorian Belfast | Farrell, Sean | Monograph or Collective Volume | Syracuse University Press | 2023 |
| Thomas Drew's article on George Edmund Street as a restorer from the 'Dublin University Review', 1886 | Drew, Thomas | Article in Book | | 2000 |
| Thomas Drummond | O'Dea, Laurence | Article in Journal | | 1971 |
| Thomas Drummond and Irish administrative reform | Kelly, Timothy F. | Article in Journal | | 1944 |
| Thomas Drummond and the government of Ireland, 1835-41 | Ó Tuathaigh, M. A. G. (Gearóid) | Monograph or Collective Volume | National University of Ireland | 1978 |
| Thomas Drummond served his adopted country faithfully | Corish, Ray | Article in Journal | | 2023 |
| Thomas Drummond, R.C., F.R.A.S., (1797-1840) surveyor and administrator | Malley, A. J. | Article in Journal | | 1992 |
| Thomas Dunne (1884–1968) | Shortall, Lisa | Article in Journal | | 2020 |
| Thomas D’Arcy McGee – Ireland’s lost patriot and Canada’s assassinated hero | Ashe, Ian | Article in Journal | | 2020 |
| Thomas Earley, manufacturer of ecclesiastical furniture and stained-glass windows, Upper Camden Street | Cannon, Max | Article in Journal | | 2021 |
| Thomas Edmondson and the Dublin laundry : a Quaker businessman, 1837-1908 | Hearn, Mona | Monograph or Collective Volume | Irish Academic Press | 2004 |
| Thomas Emerson's Kildare estate surveys 1674-1697 | Horner, Arnold | Article in Journal | | 1996 |
| Thomas England 1823-1869, a Bandon-born architect in Carlifornia, U.S.A., part 1 | England, M. J. | Article in Journal | | 2003 |
| Thomas F. Feigh : philanthropist extraordinary | O'Brien-Grennan, Cathleen | Article in Journal | | 1993 |
| 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 Fanning 1933-1993 | W., P. F. | Article in Journal | | 1994 |
| Thomas Fawcett, Irish Quaker, American pioneer | Plunkett, Thomas | Article in Journal | | 1900 |
| Thomas Fitz Simons patriot, soldier, statesman | Phelan, Thomas P. | Article in Journal | | 1922 |
| Thomas Fitzanthony's borough : medieval Thomastown in Irish history, 1171-1555 | Silverman, Marilyn | Article in Journal | | 1998 |
| Thomas Fitzgerald of Lackaghe | Boylan, Lena, d. 2000 | Article in Journal | | 1969 |
| Thomas Fitzgerald, the Irish National Association of Queensland and Australian national security, 1916-1921 | Ainsworth, John | Article in Journal | | 2005 |
| Thomas Fitzpatrick : mountain man | McGrath, Roger | Article in Book | | 1987 |
| Thomas Fitzpatrick and The Lepracaun Cartoon Monthly, 1905-1915 | Curry, JamesWallace, Ciarán | Monograph or Collective Volume | Dublin City Public Libraries [Distributed by Four Courts Press] | 2015 |
| Thomas Fitzsimons (1614-80) | MacKiernan, Francis J. | Article in Journal | | 2001 |
| Thomas Fitzsimons : framer of the American constitution | Purcell, Richard J. | Article in Journal | | 1938 |
| Thomas Fleming, O.F.M., bishop of Leighlin (1432-c.58), cited to a provincial council at Ferns | Lynch, Anthony | Article in Journal | | 1993 |
| Thomas Foran, 1883-1951 | Lysaght, D. R. O'Connor | Article in Journal | | 2005 |
| Thomas Francis Bourke (1840-1889) part 1 | O'Donnell, Michael | Article in Journal | | 1990 |
| Thomas Francis Bourke : (1840-1889). Part 2 | O'Donnell, Michael | Article in Journal | | 1991 |
| Thomas Francis Meagher | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Monograph or Collective Volume | National University of Ireland | 1962 |
| Thomas Francis Meagher | Murphy, Kevin | Article in Book | | 1987 |
| Thomas Francis Meagher : an Irish revolutionary in America | Athearn, R. G. | Monograph or Collective Volume | University of Colorado Press | 1949 |
| Thomas Francis Meagher : his Stonyhurst years | Knight, David | Article in Journal | | 2003 |
| Thomas Francis Meagher : reluctant revolutionary | Hearne, John M. | Article in Book | | 2006 |
| Thomas Francis Meagher : the making of an Irish American | Cornish, Rory T.Hearne, John M. | Monograph or Collective Volume | Irish Academic Press | 2006 |
| Thomas Francis Meagher : the making of an Irish-American | | Monograph or Collective Volume | Irish Academic Press | 2005 |
| Thomas Francis Meagher in love and war : a narrative history | Smith, David | Article in Book | | 2006 |
| Thomas Francis Meagher's bar bill | West, Elliott | Article in Journal | | 2003 |
| Thomas Francis Meagher's reading in 1846 | | Article in Journal | | 1943 |
| Thomas Francis Meagher, 1822-67 | Bodkin, Mathias | Article in Journal | | 1968 |
| Thomas French proprietor of "The Western Star" newspaper | Mitchell, Vivienne | Article in Journal | | 2000 |
| Thomas Frye (1710-62) | Wynne, Michael | Article in Journal | | 1972 |
| Thomas Gogarty and the Records of Drogheda Corporation: Part 1 of 2 | Gurrin, Brian | Article in Journal | | 2019 |
| Thomas Gogarty and the Records of Drogheda Corporation: Part 2 of 3 | Gurrin, Brian | Article in Journal | | 2020 |
| Thomas Gogarty and the Records of Drogheda Corporation: Part 3 of 3 | Gurrin, Brian | Article in Journal | | 2021 |
| Thomas Greer of Dungannon (1724-1803), quaker linen merchant | McConaghy, John Willdridge | Thesis | | 1979 |
| Thomas Grubb 1800-1878 and Howard Grubb 1844-1931 | Whitaker, Andrew | Article in Book | | 2003 |
| Thomas Grubb, telescope maker and banknote printer | Wayman, P. A. | Article in Book | | 1990 |
| Thomas Gubby 'alias' Hughes : informant on the burning of Wildgoose Lodge | Ó Muirí, Réamonn | Article in Journal | | 1993 |
| Thomas H. Burke and the Phoenix Park murders | Higgins, Brendan | Article in Journal | | 2010 |
| Thomas Hand. 1878-1920. Irish volunteer | Whearity, Francis | Article in Journal | | 2004 |
| Thomas Harriot, 1560-1621 | Fenton, P. C. | Article in Book | | 2000 |
| Thomas Harrison, local surgeon and the Ballinasloe dispensary | Wilkins, David | Article in Journal | | 1998 |
| Thomas Harten : strike-breaker in the Dublin lockout | Cusack, Danny | Article in Journal | | 2019 |
| Thomas Hayes of Milltown Malbay | Breathnach, DiarmuidNí Mhurchú, Máire | Article in Journal | | 1991 |
| Thomas Henry Kavanagh, VC | Caomhánach, Mícheál Mac Murchadha | Article in Journal | | 1996 |
| Thomas Henry Kavanagh, Victoria Cross | Kavanagh, Jimmy | Article in Journal | | 2003 |
| Thomas Hibernicus, who flourished A. D. 1269, in the reign of Henry III | Mayo, Earl of | Article in Journal | | 1895 |
| Thomas Hickey and Ireland | Breeze, George | Article in Journal | | 1983 |
| Thomas Hobbes and political thought in Ireland, c.1660-c.1730 : the Leviathan released | Ward, Matthew | Monograph or Collective Volume | Oxford University Press | 2024 |
| Thomas Holand - Richard II's King of Ireland? | Dunn, Alastair | Article in Journal | | 2003 |
| Thomas Hopper and the Norman revival | Feddon, R. R. | Article in Book | | 1956 |
| Thomas Hovenden (1840-95) : a Cork artist in Brittany and America | Campbell, Julian | Article in Book | | 1987 |
| Thomas Howell and his friends : serving Christ Church Cathedral, Dublin 1570-1700 | Gillespie, Raymond | Monograph or Collective Volume | Friends of Christ Church Cathedral | 1997 |
| Thomas Hussey y sus servicios a la política de Floridablanca | Voltes Bou, Pedro | Article in Journal | | 1959 |
| Thomas Hussey, bishop of Waterford and Lismore, 1797-1803, and the rebellion of 1798 | Keogh, Dáire | Article in Book | | 1992 |
| Thomas Hussey, Edmund Burke, and the Irish Directory | Keogh, Dáire | Article in Book | | 2006 |
| Thomas Ivory | McParland, Edward | Article in Journal | | 1974 |
| Thomas Ivory, architect | McParland, Edward | Monograph or Collective Volume | Gifford & Craven | 1973 |
| Thomas J. Clarke | Quinn, James | Article in Book | Royal Irish Academy | 2015 |
| Thomas Jackson : minister of Downpatrick, 1700-1708 | Brown, A. W. Geoffrey | Article in Journal | | 1991 |
| Thomas Jackson : minister of Downpatrick, 1700-1708 | Brown, Godfrey M. | Article in Journal | | 1986 |
| Thomas Jackson, Minister of Downpatrick, 1700-1708 | Brown, A. W. Godfrey | Article in Journal | | 1986 |
| Thomas James Crotty O.P. and his correspondence with Sir Roger Casement | Walsh, Edward | Article in Journal | | 2019 |
| Thomas Johnson 1872-1963 : labour leader | Deasy, Joe | Article in Journal | | 1992 |
| Thomas Johnson and Dáil Éireann: a study of a Labour leader's parliamentary, career, 1922-27 | O'Sullivan, Sheena Maria | Thesis | | 1996 |
| Thomas Johnson Westropp | Irwin, Liam | Article in Book | | 2009 |
| Thomas Johnson Westropp | FitzGerald, Mairéad Ashe | Article in Book | | 2009 |
| Thomas Johnson Westropp (1860-1922) : an Irish antiquary | Fitzgerald, Mairéad Ashe | Monograph or Collective Volume | Department of Archaeology, University College Dublin | 2000 |
| Thomas Johnson Westropp and his study of the medieval tower houses of Counties Clare and Limerick | Donnelly, Colm J. | Article in Book | | 2007 |
| Thomas Johnson Westropp, 1860-1922 | Irwin, Liam | Article in Book | Four Courts | 2012 |
| Thomas Johnson, 1872-1963 : a pioneer labour leader | Mitchell, Arthur | Article in Journal | | 1969 |
| Thomas Johnson, 1872-1963 : first leader of the Labour Party in Dáil Éireann | Gaughan, J. Anthony, 1932- | Monograph or Collective Volume | Kingdom Books | 1980 |
| Thomas Jonathan (Stonewall) Jackson | Sheehan, John Louis | Article in Journal | | 1910 |
| Thomas Jones Hughes (28 April 1922 - 13 December 2011): First president of the Association of Geography Teachers of Ireland | Horner, Arnold | Article in Journal | | 2011 |
| Thomas Kavanagh and the people of Borris, Co. Carlow, 1790-1837 | Joyce, Tom | Article in Journal | | 2013 |
| Thomas Kavanagh M. P., 1767-1837, and his political contemporaries | Kavanagh, P. J. | Article in Journal | | 1977 |
| Thomas Kearns : Irish-American builder of modern Utah | Bringhurst, Newell G | Article in Journal | | 1992 |
| Thomas Kelly and the Blackrock 'connexion' | Jeffery, Heather | Article in Journal | | 2003 |
| Thomas Kelly, Co. Leitrim. Irish Volunteers, Co. Tyrone 1914-1916 | Kelly, Thomas | Article in Book | | 2016 |
| Thomas Keneally : Australian for history | Morgan, Hiram | Article in Journal | | 2001 |
| Thomas Kenneth Whitaker : a biographical note | Ó Muircheartaigh, Fionán | Article in Book | | 1997 |
| Thomas Kent | McCabe, Desmond : White, Lawrence William | Article in Book | Royal Irish Academy | 2015 |
| Thomas Kettle | Gwynn, Denis | Article in Book | | 2012 |
| Thomas Kettle | Pašeta, Senia | Monograph or Collective Volume | Published on behalf of the Historical Association of Ireland by University College Dublin Press | 2008 |
| Thomas Kettle : "an Irish soldier in the army of Europe"? | Pašeta, Senia | Article in Book | | 2002 |
| Thomas Kettle and Francis Sheehy Skeffington | McHugh, Roger Joseph | Article in Journal | | 1956 |
| Thomas Kettle and Francis Sheehy Skeffington: a thematic examination of their lives, works and relationship, 1897-1916 | Nowlan, Martin Gerard | Thesis | | 1994 |
| Thomas Kettle and Francis Sheehy-Skeffington | McHugh, Roger Joseph | Article in Book | | 1960 |
| Thomas Keys and the RMS Leinster sinking - a personal odyssey | Mullen, Denis | Article in Journal | | 2019 |
| Thomas Kilroy | Dawe, Gerald | Article in Journal | | 2002 |
| Thomas Kilroy (b.1934) | Murray, Christopher | Article in Book | | 2005 |
| Thomas Kinsella (b. 1929) | Clutterbuck, Catriona | Article in Book | | 2005 |
| Thomas Kinsella and the Peppercanister Press | Tubridy, Derval | Article in Book | | 2004 |
| Thomas L. Synnott : the career of a Dublin Catholic 1830-1870 | Cullen, Bob | Monograph or Collective Volume | Irish Academic Press | 1997 |
| Thomas Landsdowne Parr Moore, son and legionnaire | Ryan, George E. | Article in Journal | | 1998 |
| Thomas le Botiller, prior of Kilmainham, 1403-1419 | Butler, T. Blake | Article in Journal | | 1944 |
| Thomas Leahy, Member 'E' Company, 2nd Battalion, Dublin Brigade. Irish Volunteers 1914.Member of Irish Citizen Army. | Leahy, Thomas | Article in Book | | 2016 |
| Thomas Ledlie Birch, United Irishman | McClelland, Aiken | Article in Journal | | 1961 |
| Thomas M. Kettle, 1880-1916 | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1966 |
| Thomas MacDonagh | White, L. W. | Article in Journal | | 2016 |
| Thomas MacDonagh | White, Lawrence William | Article in Book | Royal Irish Academy | 2015 |
| Thomas MacDonagh | MacDonagh, Donagh | Article in Journal | | 1965 |
| Thomas MacDonagh (1878-1916) | Kiberd, Declan | Article in Book | | 2005 |
| Thomas MacDonagh 1878-1916 | Kiberd, Declan | Article in Journal | | 2006 |
| Thomas MacDonagh : a critical biography | Norstedt, Johann A. | Monograph or Collective Volume | University Press of Virginia | 1980 |
| Thomas MacDonagh : a literary life | | Article in Book | | 2017 |
| Thomas MacDonagh : the man, the patriot, the writer | Parks, Aileen WellsParks, Edwin | Monograph or Collective Volume | University of Georgia Press | 1967 |
| Thomas MacDonagh and the rising | Hayes, Michael | Article in Book | | 1966 |
| Thomas MacDonagh's role in the plans for the 1916 rising | Bourke, Marcus | Article in Journal | | 1968 |
| Thomas MacDonaglis 'Middle Country' : the Norman and Cromwellian plantation | Taatgen, Henderikus A. | Article in Journal | | 1990 |
| Thomas MacDonald Patterson (1839-1916) : the Colorado crusader for change | Byrne, Thomas J. | Article in Journal | | 2000 |
| Thomas MacGreevy : 1916 at a distance | Schreibman, Susan | Article in Book | Irish Historical Publications | 2016 |
| Thomas MacNevin's copy of 'The Nation' | MacGrath, Kevin | Article in Journal | | 1951 |
| Thomas Magauran, O.F.M. (c.1640-1715) | Faulkner, Anselm | Article in Journal | | 1970 |
| Thomas Maguire and the Parnell forgeries | Foley, Timothy P. (Tadhg) | Article in Journal | | 1994 |
| Thomas Markey, United Irishman | Markey, Patrick | Article in Journal | | 2008 |
| Thomas Martin and the founding of Sinn Féin | McEvatt, R. M. | Article in Journal | | 1970 |
| Thomas McDonagh's 1916: Protagonist and Playwright | Roche, Anthony | Article in Journal | | 2017 |
| Thomas Meagher : forgotten father of Thomas Francis Meagher | Broderick, Eugene | Monograph or Collective Volume | Irish Academic Press | 2022 |
| Thomas Messingham (c.1575-1638?) and the seventeenth-century church | O'Connor, Thomas | Article in Journal | | 2000 |
| Thomas Milles, Bishop of Waterford and Lismore | Finnegan, Rachel | Article in Journal | | 2013 |
| Thomas Mitchell and the passing of the old order in Birr, 1914–1918 | Byrne, Michael | Article in Journal | | 2020 |
| Thomas Moland's survey of Ennis, 1703 | Ó Dálaigh, Brian | Article in Journal | | 1987 |
| Thomas Moore | MacGreevy, Thomas | Article in Journal | | 1948 |
| Thomas Moore | MacCall, Séamus | Monograph or Collective Volume | | 1935 |
| Thomas Moore | Gwynn, Stephen Lucius, 1864-1950 | Monograph or Collective Volume | | 1905 |
| Thomas Moore : artistry in the song lyric | Jordan, H. H. | Article in Journal | | 1962 |
| Thomas Moore : towards a reassessment? | Rafroidi, Patrick | Article in Book | | 1992 |
| Thomas Moore and Irish music | Doyle, M. P. | Article in Journal | | 1946 |
| Thomas Moore and Poland | MacWhite, Eoin | Article in Journal | | 1972 |
| Thomas Moore and Romantic inspiration: Poetry, music, and politics | | Monograph or Collective Volume | Routledge | 2018 |
| Thomas Moore and the Holy Alliance | Hennig, J. | Article in Journal | | 1946 |
| Thomas Moore and the problem of colonial masculinity in Irish Romanticism | Wright, Julia M. | Article in Book | | 2012 |
| Thomas Moore and the review of 'Christabel' | Jordan, Hoover H. | Article in Journal | | 1957 |
| Thomas Moore and the social life of forms | Moore, Jane | Article in Book | | 2020 |
| Thomas Moore and the transatlantic, 1800-1840 : the local, the global and the mobile | Wright, Julia M. | Monograph or Collective Volume | Edinburgh University Press | 2025 |
| Thomas Moore as theologian | Hennig, John | Article in Journal | | 1947 |
| Thomas Moore in Ireland and America : The Growth of a Poet's Mind. By : Vail, Jeffery. Romanticism, 2004, Vol. 10 Issue 1, p41-62, 22p; Abstract : Traces the growth of Irish poet Thomas Moore's mind during the period from 1792 to 1806. | Vail, Jeffery W. | Article in Journal | | 2004 |
| Thomas Moore's "Loves of the Angels" (1952) | Davie, D. A. | Article in Journal | | 2012 |
| Thomas Moore's harp : the royal portable harp of John Egan | Hurrell, Nancy | Article in Book | | 2008 |
| Thomas Moore's visit to Bannow 1836 | McDonald, Tom | Article in Journal | | 2010 |
| Thomas Moore's wild song : the 1821 Irish Melodies | Campbell, M. | Article in Journal | | 2000 |
| Thomas Moore, der irische Freiheitssänger. Biographisch literarische Studie | Stockmann, Alois | Monograph or Collective Volume | | 1910 |
| Thomas Moore, Ireland, and Islam | Meagher, Shelley | Article in Book | | 2009 |
| Thomas Moore, Irish satirist and keeper of the English conscience | Brogan, H. O. | Article in Journal | | 1945 |
| Thomas Moore, the Irish poet | White, Terence De Vere | Monograph or Collective Volume | [s.n.] | 1977 |
| Thomas Moran : painter of grandeur | Heald, Weldon F. | Article in Journal | | 1965 |
| Thomas Nast and the public school of the 1870s | Justice, Benjamin | Article in Journal | | 2005 |
| Thomas Newenham 1762-1831 | Gribbon, H. D. | Article in Book | | 1982 |
| Thomas Nugent (1569-1635) and the Irish Capuchins in the counter-reformation, 1591-1641 | Martin, F.X. | Thesis | | 1951 |
| Thomas Nugent fourth earl of Westmeath | Fagan, Patrick, 1922-2011 | Article in Journal | | 2003 |
| Thomas O'Connor of the Ordnance Survey | Morris, Henry | Article in Journal | | 1937 |
| Thomas O'Connor: An Appreciation | Lyons, Mary Ann | Article in Journal | | 2022 |
| Thomas O'Reilly (1830-72) of Lurgan and Atlanta, Georgia, U.S.A. | Mitchell, K. J. | Article in Journal | | 1995 |
| Thomas O'Shea, a Kerry harper | Mac Lochlainn, Alf, 1926- | Article in Journal | | 1970 |
| Thomas of Ireland, the pseudo-Dionysius and the ecclesiastical hierarchy : a study of the three opuscula | Lawell, Declan | Article in Book | | 2009 |
| Thomas Orde and educational innovation 1786/87 | McElroy, Colm | Article in Journal | | 1996 |
| Thomas Orde and some Dublin printing jobs, 1787 | McCormack, W. J. | Article in Journal | | 1988 |
| Thomas P. Givens: from Bansha to Shanghai and back | Kenny, Denis | Article in Journal | | 2024 |
| Thomas P. O’Neill, 1922-1996 | Ó Snodaigh, Pádraig | Article in Journal | | 1996 |
| Thomas Paine and the United Irishmen | Thomson, Ann | Article in Journal | | 1991 |
| Thomas Parke, surgeon and explorer | Logan, P. J. | Article in Journal | | 1964 |
| Thomas Parnell, the poet | Jackson, Robert Wyse | Article in Journal | | 1945 |
| Thomas Patient in England and Ireland | White, Barrington Raymond, 1934- | Article in Journal | | 1970 |
| Thomas Patrick Conneff and the birth of modern mile racing in America | O'Leary, Wayne M. | Article in Journal | | 1995 |
| Thomas Percy : a scholar-cleric in the age of Johnson | Davis, B. H. | Monograph or Collective Volume | NA | 1989 |
| Thomas Percy in Ireland | Green, E. R. R. | Article in Journal | | 1970 |
| Thomas Phillip's plan of Athlone | Murtagh, Harman | Article in Journal | | 1985 |
| Thomas Phillips' prospects of Ireland, 1684-5 | Murtagh, Harman | Article in Journal | | 2007 |
| Thomas Pierce Purcell : a Kilkenny man to be remembered | Hegarty, Maureen | Article in Journal | | 2005 |
| Thomas Pleasants and the Stove Tenter House - 1815-1944 | Butler, Beatrice Bayley | Article in Journal | | 1945 |
| Thomas Pleasants and the Stove Tenter House, 1815-1944 | Bayley Butler, Beatrice | Article in Journal | | 1988 |
| Thomas Pleasants, 1729-1818 | Butler, Beatrice Bayley | Article in Journal | | 1944 |
| Thomas Prior - the Rathdowney man with an social conscience who founded the RDS | Fennelly, Teddy | Article in Journal | | 2016 |
| Thomas Prior : his life, times and legacy | Fennelly, Teddy | Monograph or Collective Volume | Arderin | 2001 |
| Thomas Prior, 1681-1751 : founder of the Royal Dublin Society | Clarke, Desmond | Monograph or Collective Volume | Three Candles | 1951 |
| Thomas Prior, 1681-1751, founder of the Royal Dublin Society | Clarke, D. | Article in Journal | | 1951 |
| Thomas Prior, Sir John Rawdon, third baronet, and the mentality and ideology of 'improvement' : a question of upbringing | Hayton, D. W. (David William) | Article in Book | | 2012 |
| Thomas Proby | Fleetwood, John | Article in Journal | | 1992 |
| Thomas Raven and the mapping of the Clandeboy estates, 1625 | Gillespie, Raymond | Article in Journal | | 1981 |
| Thomas Reid's travels | McAllen, Bridget | Article in Journal | | 1993 |
| Thomas Reids : voyages 1818-20 | McAngellan, Briget | Article in Journal | | 1992 |
| Thomas Reilly - a Crimean veteran from Tulla, Co. Clare | O'Reilly, William | Article in Journal | | 2002 |
| Thomas Rickman in Ireland : the building of Lough Fea, Co. Monaghan, and its context | Aldrich, M. B. | Article in Book | | 2008 |
| Thomas Roberts : landscape and patronage in eighteenth-century Ireland | Laffan, William,Rooney, Brendan | Monograph or Collective Volume | Churchill House Press for the National Gallery of Ireland | 2009 |
| Thomas Roberts et in Arcadia ego | Walton, Julian | Article in Journal | | 2009 |
| Thomas Roberts, 1748-1778 | Wynne, Michael | Article in Journal | | 1994 |
| Thomas Roberts, 1748-78 | Wynne, Michael | Article in Journal | | 1977 |
| Thomas Robinson Hewitt | Carpenter, G.H. | Article in Journal | | 1915 |
| Thomas Romney Robinson (1792-1882), Director of Armagh Observatory (1823-1882) | Crowe, Dolores | Article in Journal | | 1971 |
| Thomas Ronan in sixteenth-century Cork | MacCarthy, C. J. F. | Monograph or Collective Volume | The author | 1990 |
| Thomas Russell | Landreth, Helen | Article in Book | | 1942 |
| Thomas Russell | McGinty, Margaret | Article in Journal | | 1993 |
| Thomas Russell - the man from God knows where | Kavanagh, John J. | Article in Journal | | 1985 |
| Thomas Russell - United Irishman | Dawson, Kenneth | Article in Journal | | 1995 |
| Thomas Russell : the man from God-knows-where | Bryce, John | Article in Journal | | 1987 |
| Thomas Russell and Belfast | Clifford, Brendan | Monograph or Collective Volume | Athol | 1988 |
| Thomas Russell and county Down: marking the bi-centenary | Mckenna, Linda | Article in Journal | | 2003 |
| Thomas Russell, librarian | Gray, John | Article in Journal | | 2003 |
| Thomas Russell, United Irishman | Quinn, James | Article in Book | | 2018 |
| Thomas Russell, United Irishman | Quinn, James | Article in Journal | | 2002 |
| Thomas Russell: bi-centenary lecture | Elliott, Marianne | Article in Journal | | 2003 |
| Thomas Ryan : Dublin and thereabouts | Ryan, Thomas | Monograph or Collective Volume | Gandon Editions | 2011 |
| Thomas Ryan of Ballinakill | Holton, Karina | Article in Book | | 1998 |
| Thomas Shelly of Callan (1823-1905) : his life and times | Kennedy, Joseph | Article in Journal | | 1988 |
| Thomas Shelly's article in the Ossory Archaeological Journal, 1874 | Kennedy, JosephShelly, Thomas | Article in Book | | 2007 |
| Thomas Sheridan (1646-1712) and his "Narrative" | Hiller, J. | Article in Journal | | 1976 |
| Thomas Sheridan (1646-1712) and his 'narrative' | Miller, J. | Article in Journal | | 1976 |
| Thomas Sheridan : toleration and royalism | Geoghegan, Vincent | Article in Book | | 2001 |
| Thomas Sheridan and the second Smock Alley theatre riot, 1754 | Mounsey, Chris | Article in Journal | | 2000 |
| Thomas Sheridan of Smock-Alley; recording his life as an actor and theater manager in both Dublin and London, and including a Smock-Alley calendar for the years of his management | Sheldon, E. K. | Monograph or Collective Volume | Princeton University Press | 1967 |
| Thomas Sherrard's map of Naas, 1787 | Costello, Con | Article in Journal | | 1998 |
| Thomas Sinclair : 'Ulster's most prominent citizen' | Greenlee, GrahamLucy, GordonRoulston, William | Monograph or Collective Volume | Ulster-Scots Agency & Ulster Historical Foundation | 2016 |
| Thomas Sinclair : Presbyterian Liberal unionist | Walker, Graham | Article in Book | | 1996 |
| Thomas Skilling (1793-1865). Professor of Agriculture, Queens College Galway (Parts 1-2) | Mitchell, James | Article in Journal | | 2006 |
| Thomas Smith : Presbyterian bookman | Street, T. Watson | Article in Journal | | 1959 |
| Thomas Smyth, Frederick Douglass, and the Belfast antislavery campaign | Maclear, J. F. | Article in Journal | | 1979 |
| Thomas Spring Rice and the peopling of Australia | Fitzpatrick, David | Article in Journal | | 1988 |
| Thomas Spring Rice, Chancellor of the Exchequer 1835-39: recession and depression in early nineteenth-century Britain | Murphy, Charlotte | Article in Journal | | 2012 |
| Thomas St. George MacCarthy (1862-1943. R.I.C. District Inspector (1882-1912), co-founder of the Gaelic Athletic Association | Herlihy, Jim | Article in Journal | | 2010 |
| Thomas Stanislaus Cleary (1851-98) : Land League leader and campaigning newspaper editor | Moran, Oisín | Article in Book | | 2013 |
| Thomas Stapleton : student in divinity | Stewart, R. L. | Article in Journal | | 1966 |
| Thomas Steele : Clare man extraordinary | Lowth, Cormac | Article in Journal | | 1998 |
| Thomas Steele, patriot extraordinary | Lowth, Cormac | Article in Journal | | 2000 |
| Thomas Swanton : Protestant landlord and Irish language enthusiast | Daly, Eugene | Article in Journal | | 2007 |
| Thomas Swanton, réamhchonraitheoir in Iar-Chairbre | Ó Conchúir, Breandán | Article in Journal | | 1993 |
| Thomas Traynor 1882-1921 | McQuinn, Christopher P. | Article in Journal | | 2013 |
| Thomas Ulick Sadlier, 1882-1957 : a memoir | Sadlier, Randal, 1924-2009 | Monograph or Collective Volume | National Library of Ireland Society | 2004 |
| Thomas W. Allies (1813-1903) | Enciclopedia Cattolica | Article in Book | NA | 1948 |
| Thomas W. Davies - honest son of Galway in the wild west | Davies, Peter | Article in Journal | | 1998 |
| Thomas W. Palmer, 1822-1865, of Ireland and Michigan : his discent from James II, King of Scots | DuLong, John P.DuLong, Patricia Anne | Article in Journal | | 2005 |
| Thomas W. Rolleston (1857-1920), 'an educated Englishman who thinks he's an Irishman' | O'Brien, Mary | Thesis | | 2004 |
| Thomas Wadding's title to lands at Knockmaon, Co. Waterford, May 1587 | Hazard, Benjamin | Article in Journal | | 2023 |
| Thomas Walker and the Earl of Tyrone | Morgan, Hiram | Article in Journal | | 2010 |
| Thomas Walsh - Cashel's forgotten Archbishop | Ua Cearneigh, Seán | Article in Journal | | 2010 |
| Thomas Walter Freeman and the geography of Ireland : a tribute | Herries Davies, Gordon L. | Article in Journal | | 1973 |
| Thomas Wentworth and monarchical ritual in early modern Ireland | Shaw, Dougal | Article in Journal | | 2006 |
| Thomas Wentworth, Earl of Strafford | Watts, Jonathan | Article in Book | | 1985 |
| Thomas Wentworth, first earl of Strafford, 1593-1641 : a revaluation | Wedgwood, Cicely Veronica, Dame, 1910-1997 | Monograph or Collective Volume | Cape | 1961 |
| Thomas Wentworth’s Irish electoral strategy, 1634 | McGrath, Bríd | Article in Journal | | 2019 |
| Thomas Wickham of Kellystown and Montreal | Peterson, Brenda Wickham | Article in Journal | | 2001 |
| Thomas William Rolleston : the forgotten man | O'Brien, Maria | Article in Book | | 2004 |
| Thomas Willis, apothecary | Christie, Brendan | Article in Book | | 2002 |
| Thomas Wilson (1758 – 1824) of Dullatur,
the Scottish Second Husband of Matilda Tone:
The Unravelling of a Mystery | Rendall, Jane, 1945-Woods, C. J. (Christopher John) | Article in Journal | | 2012 |
| Thomas Wilson, Francis Hutchinson and Litriu na Gaeilge | Williams, N. J. A. | Article in Journal | | 1986 |
| Thomas Wise and family : Cork distillers | Crockett, Barry | Article in Journal | | 2018 |
| Thomas Witherow and Alexander Porter Goudy. 150 years after the Presbyterian marriage controversy, reflections on a biographer of the formidable minister of Strabane | Dunlop, Eull | Article in Journal | | 1996 |
| Thomas Wride : a Methodist preacher travelling in Ireland in the 1770s | Norris, Colin Murray | Monograph or Collective Volume | | 2020 |
| Thomas Wright and Viscount Limerick at Tollymore Park, county Down | Harris, Eileen | Article in Journal | | 2013 |
| Thomas Wyse (1791-1862) and the origins of an Irish system of national education | Smith, Gilian | Article in Journal | | 2002 |
| Thomastown Benevolent Society [from the] 'Kilkenny Journal and Leinster Commercial and Literary Advertiser', 25.10.1837 | Anonymous | Article in Journal | | 2004 |
| Thomastown Catholic church (notes on the background and construction) | Walsh, Walter | Article in Journal | | 1996 |
| Thomastown Cemetery. Undergoing restoration by Drum Heritage Group | Egan, Edmund | Article in Journal | | 1998 |
| Thomastown corporation | Pilsworth, W. J. | Article in Journal | | 1951 |
| Thomastown national schools in the nineteenth century : the role of the Roman Catholic clerical manager | Doyle, Joe | Article in Journal | | 2003 |
| Thomastown railway viaduct | Norton, Joe | Article in Journal | | 2009 |
| Thomastown recollections | Pinchin, Harry | Article in Journal | | 2001 |
| Three brides for three brothers, the Gibneys and Tyrells, bakers, millers, malsters and medics | Burke, Thomas | Article in Journal | | 2013 |
| Three Butler anniversaries | O'Regan, Donal J. | Article in Journal | | 2015 |
| Three Catholic bishops from Tennessee | Stritch, Thomas J. | Article in Journal | | 1978 |
| Three centuries of physics in Trinity College Dublin | Finch, Eric | Monograph or Collective Volume | Living Editions | 2016 |
| Three Cheers for Lord Denman : Reformers, the Irish, and Jury Reforms in Nova Scotia, 1833-1845 | Brown, R. Blake | Article in Journal | | 2005 |
| Three excecuted for Kilmacud murder | Sobolewski, Peter | Article in Journal | | 2010 |
| Three failures and a success : Dublin Castle's intelligence assessed, 1796-1803 | Bartlett, Thomas | Article in Book | | 2006 |
| Three Fellows in Mi’kma’ki: The Power of the Avocational | Reid, John G. | Article in Book | | 2021 |
| Three Irish-born judges at the Cape 1861-1896 | Girvin, Stephen D. | Article in Journal | | 1989 |
| Three Kilkenny book collectors | Law, Edward J. | Article in Journal | | 2005 |
| Three names - one history : City of Waterford Brass, St. Patrick's Brass Band, Thomas Francis Meagher Brass and Reed Band | Mernin, John | Monograph or Collective Volume | John Mernin | 2018 |
| Three nineteenth-century Limerick apothecaries | Phayer, John | Article in Journal | | 2012 |
| Three prophets of our own time : a lecture on Adam Clarke, Alexander Carson and Henry Cooke delivered on 3 Jan 1855 | Dunlop, EullWitherow, Thomas | Monograph or Collective Volume | Moyola Books|Braid Books | 1990 |
| Three revolutions and a failure | Whelan, Kevin | Article in Book | | 1998 |
| Three ringed pins from Viking Dublin and their significance | Fanning, Thomas | Article in Book | | 1988 |
| Three towns : Limerick since 1691 | O'Flaherty, Eamon | Article in Book | | 1995 |
| Through a virtual keyhole | Herron, Thomas, 1968-Lyttleton, James | Article in Journal | | 2019 |
| Through American and Irish wars : the life and times of General Thomas W. Sweeny 1820-1892 | Morgan, Jack | Monograph or Collective Volume | Irish Academic Press | 2006 |
| Through Kerry, Cork and Limerick with Rinuccini | Walsh, T. J. (Thomas Joseph) | Article in Journal | | 1963 |
| Through peace and war : Kildare County Council in the years of revolution, 1899-1926 | Nelson, Thomas | Monograph or Collective Volume | Killeaney Press | 2015 |
| Thurles : the Cathedral town : essays in honour of Archbishop Thomas Morris | | Monograph or Collective Volume | Geography Publications | 1989 |
| Thurles from a distance | Nolan, William | Article in Book | | 1989 |
| Thurles Savings Bank, 1829-71 | O'Shea, James | Article in Book | | 1989 |
| Tidal power | Crothers, NormanMcErlean, Thomas | Article in Journal | | 2001 |
| Tidal power in the seventh and eighth centuries A.D. | McErlean, Thomas | Article in Journal | | 2001 |
| Time and some citizenship : nationalism and Thomas Davis | Kearns, Gerard | Article in Journal | | 2001 |
| Timothy Michael Healy | O'Brien, Conor Cruise, 1917-2008 | Article in Book | | 1960 |
| Tip O'Neill's Buncrana links | Roarty, Leonard | Article in Journal | | 2012 |
| Tipperary to Worcester: gleanings from the O'Flynn papers | Griffin-Wilson, Margo | Article in Journal | | 2019 |
| To the beat of a different drum : Loyalist youth and the culture of marching bands | McCready, SamSymington, Neil | Article in Book | | 2015 |
| Tochmarc Étaíne | Dillon, Myles | Article in Book | | 1959 |
| Tochmarc Étaíne : a literal interpretation | Charles-Edwards, T. M. (Thomas Mowbray) | Article in Book | | 2002 |
| Toeing the line : why the American press fails | Thomas, Jo | Article in Book | | 1991 |
| Togail Bruidne da Derga | O Daly, Máirín | Article in Book | | 1959 |
| Toland, Berkeley and the irrational hypothesis | Duddy, Thomas | Article in Journal | | 1999 |
| Tollymore Park | Roden, Lord | Article in Journal | | 2007 |
| Tollymore Park : the gothick revival of Thomas Wright and Lord Limerick | Rankin, Peter J. | Monograph or Collective Volume | Follies Trust | 2010 |
| Tom Barry : IRA freedom fighter | Ryan, Meda | Monograph or Collective Volume | Mercier Press | 2003 |
| Tom Barry and the Kilmichael ambush | Ryan, Meda | Article in Journal | | 2005 |
| Tom Barry: guerilla days in Iraq | McLoughlin, Mark | Article in Journal | | 2008 |
| Tom Boyse's high steeple | McDonald, Tom | Article in Journal | | 2013 |
| Tom Carr : an appreciation | Maille, Eamonn | Monograph or Collective Volume | [The author] | 1990 |
| Tom Clarke | MacDonagh, Donagh | Article in Journal | | 1966 |
| Tom Clarke : life, liberty, revolution | MacAtasney, Gerard | Monograph or Collective Volume | Merrion Press | 2013 |
| Tom Clarke : the true leader of the Easter Rising | Foy, Michael T. | Monograph or Collective Volume | History Press Ireland | 2014 |
| Tom Clarke and the Irish freedom movement | Leroux, Louis | Monograph or Collective Volume | [s.n.] | 1936 |
| Tom Clarke's New York : a refuge (1880) and a home (1899-1907) | MacAtasney, Gerard | Article in Book | | 2016 |
| Tom Clarke, MacDermot, and the I.R.B. | Nowlan, Kevin B. | Article in Book | | 1967 |
| Tom Darragh | Jordan, John | Article in Journal | | 2004 |
| Tom Fanning's excavations at Rinnaraw Cashel, Portnablagh, Co. Donegal | Comber, Michelle | Article in Journal | | 2006 |
| Tom Garvin - Curriculum vitae as of September, 2010 | | Article in Journal | | 2010 |
| Tom Kettle remembered | Connolly, SeanQuinn, Tony | Article in Journal | | 2006 |
| Tom Kettle, 1880-1916 | Lyons, J. B. (John Benignus) | Article in Journal | | 1990 |
| Tom Lee : the posing peacemaker | Morgan, Hiram | Article in Book | | 1993 |
| Tom McHugh and the Tuam 'Caravaggio' | Nic Con Ultaigh, Nora | Article in Journal | | 2016 |
| Tom Moore and contemporary Ireland | De Paor, Liam | Monograph or Collective Volume | Irish Traditional Music Society, University College Cork | 1989 |
| Tom Moore and George Bryan, Jenkinstown | Brennan, John | Article in Journal | | 1989 |
| Tom Moore, the Irish poet | White, Terence De Vere | Monograph or Collective Volume | | 1977 |
| Tom Murphy and Druid Theatre's Famines: Developing images and contexts, 1984 and 2012 | Troupe, Shelley | Article in Book | | 2018 |
| Tomás Ághas, 1885-1917 : Thomas Ashe | Ó Móráin, Mícheál | Monograph or Collective Volume | Lios Póil : Coiste Cuimhreacháin Thomáids Ághas, 2017 | 2017 |
| Tomás Ághas. Laogh na nGael 90 bliain ar lár | Ó hEartáin, Roibeard | Article in Journal | | 2008 |
| Tomás Dáibhis - staraidhe | Ó Neill, Séamus | Article in Book | | 1945 |
| Tomás Ó Fiaich and the development of John Hume's political thinking | Dolan, Thomas | Article in Book | | 2023 |
| Tomás Ó Flannghaile, scoláire agus file, a ré agus a bheatha, a shaothar literdha agus a fhilifheacht | Ó Liatháin, Donnchadh | Monograph or Collective Volume | Oifig an tSoláthair | 1940 |
| Tomás Ó hÍcí, scríobhaí Chill Náile | Ó Duibhir, Donnchadha | Article in Journal | | 1990 |
| Tomás Ruiséil | Mac Giolla Easpaig, S. N. | Monograph or Collective Volume | | 1957 |
| Tomás Ruiséil | Mac Giolla Easpaig, S. N. | Monograph or Collective Volume | Cló Morainn | 1957 |
| Tomás Ruiséil (1767-1803) | Easpuig, S. MacGiolla, Rev. | Thesis | | 1955 |
| Tome : studies in medieval Celtic history and law in honour of Thomas Charles-Edwards | | Monograph or Collective Volume | The Boydell Press | 2011 |
| Tooloobaun Castle | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1915 |
| Topographical notes : 3, Rosnat, Rostat and the early Irish church | Thomas, Charles | Article in Journal | | 1971 |
| Tóraigheacht Dhiarmada agus Ghráinne | Breatnach, R. A. | Article in Book | | 1959 |
| Tory radicalism and the Home Rule crisis, 1910-1914 : the case of Lord Willoughby de Broke | Kennedy, Thomas C. | Article in Journal | | 2002 |
| Towards a national university : William Delaney, S.J. (1835-1924) and an era of initiative in Irish education | Morrissey, Thomas J. | Monograph or Collective Volume | Wolfhound Press|Humanities Press | 1983 |
| Towards a new Academy | O'Conor, John | Article in Book | | 1998 |
| Towards the invention of the Irish Catholic natio : Thomas Messingham's Florilegium (1624) | O'Connor, Thomas | Article in Journal | | 1999 |
| Towards the new constitution | Grogan, Vincent | Article in Book | | 1967 |
| Town and baile in Irish place-names | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Book | | 1970 |
| Town life in medieval Ireland | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1901 |
| Towns and plantations, 1500-1700 | Buchanan, R. H. (Ronald Hull) | Article in Book | | 1986 |
| Trade and society in Waterford city, 1800-1840 | Cowman, Des | Article in Book | | 1992 |
| Trade tokens of Co. Galway in the 17th century | Costello, Thomas B. | Article in Journal | | 1931 |
| Trade union century | | Monograph or Collective Volume | Mercier Press in association with Irish Congress of Trade Unions & Radio Telefís Éireann | 1994 |
| Trade unions and change in Irish society | | Monograph or Collective Volume | Mercier Press | 1980 |
| Trade unions and economic development | Girvin, Brian | Article in Book | | 1994 |
| Trade unions and the law | Redmond, Mary | Article in Book | | 1994 |
| Trades councils in Waterford city | O'Connor, Emmet | Article in Book | | 1992 |
| Tradition and enlightenment : conversion and assurance of salvation in Ulster Presbyterianism, 1700-1859 | Holmes, Andrew R., 1977- | Article in Book | | 2005 |
| Tradition and exegesis in the eighth century : the use of patristic sources in early medieval scriptural commentaries | O'Loughlin, Thomas | Article in Book | | 1999 |
| Traditions of Glin and its neighbourhood | Culhane, Thomas F. | Article in Journal | | 1969 |
| Tralee | Bradley, John, 1954-2014 | Article in Book | | 1995 |
| Transcripts from the monuments in Callan Church | Shelly, Thomas | Article in Journal | | 1879 |
| Translation and transition : writing in English 1700-1900 | O'Dwyer, Riana | Article in Book | | 1988 |
| Transnational trade in the wartime North Atlantic : the voyage of the snow recovery | Truxes, Thomas M. | Article in Journal | | 2005 |
| Transplanting China to Ireland : three generations of the Earls of Rosse | Parsons, Brendan, 7th Earl of Rosse | Article in Book | | 2009 |
| Transport | Murray, Kevin | Article in Book | | 1980 |
| Trapped between two worlds : Edward Nangle, Achill Island and sectarian competition in Ireland, 1800-1862 | Kelley, Thomas | Thesis | | 2004 |
| Travel and transport in Ireland | | Monograph or Collective Volume | Gill & Macmillan | 1973 |
| Travelling with Thomas Story : the life and travels of an eighteenth century Quaker | Moore, E. E. | Monograph or Collective Volume | Letchworth Printers | 1947 |
| Treatyite politics in County Longford 1923-1933 - an analysis of the Cumann na nGaedheal organisation | Farrell, Mel | Article in Journal | | 2011 |
| Trees, bushes, shrubs - even weeds | McGetterick, Thomas | Article in Journal | | 1993 |
| Treithe Thomáis Ághas | Ó Muirthile, S. | Monograph or Collective Volume | Clódhanna Teoranta | 1967 |
| Trends in the archaeology of early modern Irish settlement: an interview with Dr James Lyttleton | Herron, Thomas, 1968-Lyttleton, James | Article in Journal | | 2007 |
| Trí scéal Fiannaíochta ó Thomás Ó Criomhthain | Ó Héalaí, Pádraig | Article in Journal | | 2015 |
| Tribes of the Silmurray, under O'Conor | Knox, H. T. (Hubert Thomas) | Article in Journal | | 1905 |
| Tribute to Thomas Davis | Yeats, W. B. (William Butler), 1865-1939 | Monograph or Collective Volume | University P. | 1947 |
| Tribute. Professor Thomas Alexander Preston, 13 August 1927 - 28 December 2009 | Casteleyn, Mary | Article in Journal | | 2010 |
| Trinity's miner-botanist : Dr Thomas Coulter (1793-1843) | Nelson, E. Charles | Article in Journal | | 1988 |
| Trooper Thomas Downey : from Sydney to the Somme | Ahern, Richard | Article in Journal | | 1988 |
| Trophime-Gérard Lally, vindicator of his father, Thomas Arthur | Ó hAnnracháin, Eoghan | Article in Journal | | 2016 |
| Troubled times : war and rebellion in North Galway, 1913-1923 | Deignan, Jarlath | Monograph or Collective Volume | Letertec Ireland Ltd | 2019 |
| Troubled Tories : Dissent and Confusion concerning the Party's Ulster Policy, 1910-1914 | Kennedy, Thomas C. | Article in Journal | | 2007 |
| 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 |
| Tuam Bank and the ffrench connection | Higgins, Brendan | Article in Journal | | 2016 |
| Tuam by Thomas B. Costello, M.D., M.R.I.A. - Catholic Truth Conference Programme, 1936 | Costello, Thomas B. | Article in Journal | | 2014 |
| Tuarascáil ar na h-ealaiona in Éirinn | Bodkin, Thomas Patrick, 1887-1961 | Monograph or Collective Volume | [s.n.] | 1949 |
| Tullamore | Byrne, Michael | Article in Book | | 1995 |
| Tullow : from medieval manor to market town | Murphy, Margaret | Article in Book | | 2008 |
| Tullow fire brigade | Dunne, Thomas | Article in Journal | | 1989 |
| Turmoil in the sea of faith : the secularization of Irish social culture, 1960-2007 | Garvan, Tom | Article in Book | | 2011 |
| Turning points in twentieth-century Irish history | | Monograph or Collective Volume | Irish Academic | 2011 |
| Turning the spit : Timothy Anglin and the roasting of D'Arcy McGee | Baker, William M. | Article in Book | | 1988 |
| Twentieth century Irish literature | Dawe, Gerald, 1952-Maxwell, D. E. S.O'Dwyer, Riana | Article in Book | | 1988 |
| Twentieth-century American Catholicism and Irish Americans | Shelly, Thomas J. | Article in Book | | 2006 |
| Twentieth-century Irish literature | Mac Eoin, Gearóid | Article in Book | | 1969 |
| Twenty-five years in the secret service : the recollections of a spy | Beach, Thomas Billis, 1841-1894 | Monograph or Collective Volume | | 1892 |
| Twin perspectives : the attorney general views political and European dimensions | Sutherland, P. | Article in Book | | 1988 |
| Two 'views of the Irish language' : O’Connell versus Davis | Sommerville-Woodward, Rob | Article in Journal | | 1995 |
| Two brothers, two wars : from the Western Front to the Burmese jungle | McAlindon, Thomas | Monograph or Collective Volume | Lilliput Press | 2008 |
| Two Claremen die in Afghanistan (1880) | Nolan, Paddy | Article in Journal | | 2015 |
| Two co. Louth deaths from the early 20th century | Scannell, James
| Article in Journal | | 2017 |
| Two Cookstown guardians : William Freckleton [and] Thomas Greer | Glendinning, James | Article in Journal | | 1996 |
| Two cross-inscribed stones from Reask, Co. Kerry, at Adare manor | Fanning, Thomas | Article in Journal | | 1971 |
| Two early Christian slabs from Dysart, Thomastown, county Kilkenny | Hall, Mark E. | Article in Journal | | 1990 |
| Two early Cistercian abbots of the Isles : Blessed Christian O'Conarchy of Mellifont, Ireland, and Blessed Waltheof of Melrose, Scotland | Merton, Thomas | Article in Journal | | 2007 |
| Two eighteenth-century maps of Carlow town | Horner, Arnold | Article in Journal | | 1978 |
| Two episcopal book covers from Ossory | Wall, Thomas | Article in Journal | | 1982 |
| Two Fenians in Kildare | Wall, Thomas | Article in Journal | | 1968 |
| Two gentlemen of the Freeman : Thomas Sexton, W.H. Brayden and the Freeman's Journal, 1892-1916 | Larkin, Felix M. | Article in Book | | 2010 |
| Two Irish personalities at war | O'Donevan, The. | Article in Journal | | 1965 |
| Two Kerry baronies in the sixteenth century | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1929 |
| Two mathematical poets | Howlett, David
| Article in Journal | | 2010 |
| Two new works by Thomas Roberts (1748-1777) | Laffan, WilliamRooney, Brendan | Article in Journal | | 2012 |
| Two notes on the parliament of 1634 | Clarke, AidanFenlon, Dermot | Article in Journal | | 1967 |
| Two relics of the American civil war | Hayes-McCoy, G. A. (Gerard Anthony) | Article in Journal | | 1951 |
| Two unacknowledged adaptations from Goldsmith | Barnett, George E. | Article in Journal | | 1946 |
| Two views of The Mall, Downpatrick, in Down County Museum | Black, Eileen | Article in Journal | | 2004 |
| Typical Unionists? The politicians and their people, past and present | Greer, James | Article in Book | | 2015 |
| Údar 'Tóruidheacht na bhfíreun air Lorg Chríosda' | Ó Mórdha, Séamus | Article in Journal | | 1963 |
| Ulster 'will not fight' : T. P. O'Connor and the third Home Rule bill crisis, 1912-14 | Doherty, Erica S. | Article in Book | | 2014 |
| Ulster 1600-2000 : posing the question? | Bartlett, Thomas | Article in Journal | | 1998 |
| Ulster 1641 in the context of political developments in the three kingdoms | Perceval-Maxwell, Michael | Article in Book | | 1993 |
| Ulster : conflict and consent in Northern Ireland | Wilson, Thomas | Monograph or Collective Volume | Blackwell Publishers | 1989 |
| Ulster as a mirror of the two societies | Crawford, W. H. (William Henry) | Article in Book | | 1983 |
| Ulster as it is : or, twenty-eight years experience as an Irish editor. 2 vols. | MacKnight, Thomas | Monograph or Collective Volume | | 1896 |
| Ulster on the eve of the Plantation | Hegarty, Ruth | Article in Journal | | 2013 |
| Ulster political lives, 1886–1921 | | Monograph or Collective Volume | Royal Irish Academy | 2016 |
| Ulster under home rule | | Monograph or Collective Volume | Oxford University Press | 1955 |
| Ulster unionism and loyalty to the crown of the United Kingdom, 1912-74 | Hennessey, Thomas | Article in Book | | 1996 |
| Ulster unionist territorial and national identities 1886-1893 : province, island, kingdon and empire | Hennessy, Thomas | Article in Journal | | 1993 |
| Ulster workhouses - ideological geometry and conflict | Thomas, Liz | Article in Book | | 2012 |
| Ulster's economic structure | Cuthbert, N. B.Isles, K. S., | Article in Book | | 1955 |
| Ulster's six counties | Mogey, J. M. | Article in Book | | 1955 |
| Un étrange étranger. L'Irlandais Thomas Mulock, journaliste radical dans les Hautes Terres d'Ecosse, 1849-1851 | Auer, Christian | Article in Journal | | 2008 |
| Uncertainty and pre-famine Irish agriculture | Mokyr, Joel | Article in Book | | 1983 |
| Undaunted spirit : the life and times of Joseph T. Reilly | Quinlan, Lucille M. | Monograph or Collective Volume | Polding Press | 1980 |
| Unexplored Irish influence on Eriugena | O'Loughlin, Thomas | Article in Journal | | 1992 |
| Unfinished business: Thomas Duff of Newry | Casey, Christine | Article in Journal | | 2019 |
| Unfulfilled reknown : Thomas Preston (1860-1900) and the Anomalous Zeeman Effect | O'Connor, S.Weaire, Denis | Article in Journal | | 1987 |
| Unheard music : in memory of Thomas Goodwin Keller | Norman, H. F. | Article in Journal | | 1942 |
| Unionism and consent: problems with a principle? | Hennessey, Thomas | Article in Book | | 2011 |
| Unions in the 21st century : an international perspective | Kochan, Thomas A.Verma, Anil | Monograph or Collective Volume | Palgrave Macmillan | 2004 |
| United Irishmen, Orangemen and the 1798 Rebellion in County Carlow | Duggan, Maura | Article in Book | | 2008 |
| Unpublished Geraldine documents. 4 pts. | Graves, JamesHayman, Samuel | Monograph or Collective Volume | | 1870 |
| Unpublished letters of Thomas Francis Meagher to Sir Henry Singer Keating | Meagher, T. F. | Article in Journal | | 1938 |
| Unrecorded printings of Thomas Sheridan's 'Inventory' of Dean Swift's goods at Laracor | Anonymous | Article in Journal | | 1948 |
| Unrest and Stability in Rural Ireland and Scotland, 1760-1840 | Devine, Thomas Martin | Article in Book | | 1988 |
| Unrest and stability in rural Ireland and Scotland, 1760-1840 | Devine, Thomas Martin | Article in Book | | 1995 |
| Unrevolutionary England, 1603-1642 | Russell, Conrad Sebastian Robert, 5th earl Russell, 1937-2004 | Monograph or Collective Volume | | 1990 |
| Up in his Hat! James Joyce, John Francis Byrne and their contemporaries: the Wicklow connections | Hannigan, Ken | Article in Journal | | 2020 |
| 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 |
| Urbanisation and the milieux of factory life : Gilford/Dumbarton, 1825-1914 | Cohen, Marilyn | Article in Book | | 1993 |
| Urbanisation in modern Ireland | Pringle, Denis G. | Article in Book | | 1986 |
| Using astronomy in archaeology, with a look at the Beaghmore alignments | Hayes, Thomas | Article in Journal | | 1999 |
| Vanguard of Irish Military Music 1922-1924
The Story of Captain Thomas O'Doherty | McVeigh, Janice | Monograph or Collective Volume | Lettertec | 2021 |
| Vanquished Erin and the Minstrel Boy : Thomas Moore as a political commentator for Ireland | Martin, Jennifer | Thesis | | 2012 |
| Varieties of Irishness in eighteenth-century Seville : Wisemans and Whites | Murphy, Martin | Article in Book | | 2006 |
| Venerable John Travers and the rebellion of Silken Thomas | Edwards, R. W. D. (Robert Walter Dudley) | Article in Journal | | 1934 |
| Vessels, masters and seafaring : patterns in Waterford voyages, 1766-1771 | Mannion, John | Article in Book | | 1992 |
| Vice-regal visits to the town of Galway in the age of the Tudors | Maginn, Christopher | Article in Journal | | 2019 |
| Victorian Dublin | | Monograph or Collective Volume | Albertine Kennedy | 1980 |
| Viking age ringed pins from Dublin | Fanning, Thomas | Monograph or Collective Volume | Royal Irish Academy | 1994 |
| Viking age silver and gold from county Clare | Sheehan, John | Article in Book | | 2000 |
| Village and town in mid-nineteenth-century Ireland | Hughes, T. Jones (Thomas Jones) 1922-2011 | Article in Journal | | 1981 |
| Village Hall and Clubhouse, Adare, Co. Limerick | Hill, Judith | Article in Journal | | 2011 |
| Vindication and Justice for Michael Mallin | McCartney, William T. | Monograph or Collective Volume | Pennyburn Highmoor Publishing | 2023 |
| Violence in thirteenth-century Ireland | Finan, Thomas | Article in Journal | | 2010 |
| Virgil of Salzburg | Grosjean, Paul | Article in Book | | 1963 |
| Virtue, vice and political economy : engaging the eighteenth-century debates | Prendergast, Renée | Article in Book | | 2009 |
| Viscount Townshend and the Irish Revenue Board, 1767-73 | Bartlett, Thomas | Article in Journal | | 1979 |
| Viscount Weymouth Grammar School, Carrickmacross | Quane, Michael | Article in Journal | | 1956 |
| Visitations: Foes | Ridgway, Christopher | Article in Book | | 2023 |
| Voices from the past : three antiquarian letters | Mitchell, G. F. (George Francis), 1912-1997 | Article in Journal | | 1983 |
| Voyage of the Hongoumont and life at Freemantle : the story of an Irish rebel | Fennell, Thomas McCarthy, 1841-1914 | Monograph or Collective Volume | X libris | 2000 |
| Voyage of the Hougoumont and life at Fremantle : the story of an Irish rebel | Fennell, Thomas McCarthy, 1841-1914 | Monograph or Collective Volume | XLibris Corporation | 2000 |
| W. T. Cosgrave 1880-1965 : founder of modern Ireland | Jordan, Anthony J. | Monograph or Collective Volume | Westport Books | 2006 |
| W. T. Cosgrave, 1922-32 | Meehan, Ciara | Article in Book | NA | 2025 |
| W.E. Gladstone : the evolution of the home rule policy | Dunne, Thomas J. | Thesis | | 1971 |
| W.T. Cosgrave the Carlow connection | O'Donovan, John | Article in Journal | | 2019 |
| W.T.Cosgrave takes office and introduces the Constitution | Connell, Joseph E.A. Jr | Article in Journal | | 2022 |
| Wages and Comparative Development in Ireland and Scotland, 1565-1780 | Cullen, L. M. (Louis Michael)Gibson, A.Smout, Thomas Christopher | Article in Book | | 1988 |
| War and peace in Northern Ireland, 1965–2016 | Bew, JohnBew, Paul | Article in Book | | 2018 |
| War and recruitment - peasants as patriots | Truslow, Marion A. | Article in Journal | | 1993 |
| War and society in Westmeath, 1689-91 | Murtagh, Harman | Article in Book | Geography Publications | 2022 |
| War and syndicalism 1914-1923 | O'Connor, Emmet | Article in Book | | 1994 |
| War, patriotism and the Ulster Unionist Council, 1914-18 | Kennedy, Thomas C. | Article in Journal | | 2005 |
| War, work and labour | Puirséil, Niamh | Article in Book | | 2008 |
| Warrior time | Davies, Morgan Thomas | Article in Book | | 2016 |
| Was Bonaparte in the GPO? The legend of Napoleon in Irish history, 1796–1916 | Bartlett, Thomas | Article in Book | | 2017 |
| Was this a social revolution? | Mac Aodha, Breandán S. | Article in Book | | 1972 |
| Waterford : history and society : interdisciplinary essays on the history of an Irish county | | Monograph or Collective Volume | | 1992 |
| Waterford scientists : preliminary studies | Brady, Donald | Monograph or Collective Volume | Donald Brady | 2010 |
| Waterford's iron exports and the 30 years war | Power, Thomas P. | Article in Journal | | 2001 |
| Watsons' Nurseries | Ruddock, Thomas | Monograph or Collective Volume | Foxrock Local History Club | 1993 |
| Webs of science, webs of commerce : the life-worlds of a merchant naturalist | Finnigan, Diarmid A. | Article in Book | | 2015 |
| Welsh family members. Mary Welsh (formerly Cotter, afterwards Roch), resided at Taylorstown, Killongford, Woodstock, Odell Lodge and Woodbine Hill, County Waterford. | Welsh, Thomas Spencer Eveleigh | Article in Journal | | 2010 |
| Wentworth and Dublin's Catholic clergy : a document from the Strafford Papers | O'Connor, Tim | Article in Journal | | 2005 |
| Wentworth and Ireland 1629-33 | Kearney, Hugh Francis | Article in Journal | | 1955 |
| Wentworth and the parliament of 1634 : an essay in chronology | Fenlon, D. B. | Article in Journal | | 1964 |
| Wentworth Woodhouse manuscripts : hand list and index | Anonymous | Monograph or Collective Volume | | 1984 |
| Wentworth's wisdom or Stafford's folly : the early seventeenth-century house at Jigginstown, Naas, Co. Kildare | Quirke, Sinead | Article in Journal | | 2006 |
| West Cork's Land War - as fiction portrayed it | Lane, Pádraig G. | Article in Journal | | 2022 |
| Westbury House and its residents | Sheridan, Pat | Article in Journal | | 2020 |
| Westmeath versus Westmeath : adultery, cruelty, greed and perjury | Connell, Paul | Article in Book | | 2007 |
| Westport | McCabe, Desmond | Article in Book | | 1995 |
| Westports of the western world : a compiled history | Flynn, Thomas S. | Monograph or Collective Volume | Berry | 1986 |
| Wexford | Whelan, Kevin | Article in Book | | 1995 |
| Wexford in 1798 : a republic before its time | Cleary, Brian | Article in Book | | 1998 |
| What catholic emancipation meant | Butler, W. F. T. (William Francis Thomas), 1869-1930 | Article in Journal | | 1929 |
| What did the Easter Rising really change? | Hart, Peter, 1963-2010 | Article in Book | | 2011 |
| What do we mean by public history? The view from writing the ‘Troubles’ | Bright, JamesDolan, ThomasDoughty, Roseanna | Article in Journal | | 2020 |
| What is Anglo-Irish poetry? | Lucy, Seán | Article in Book | | 1973 |
| What was Portrush like in 1605? | Sandford, Ernest | Article in Journal | | 2006 |
| What's love got to do with it? : gender and Geraldine power on the Pale border | Carey, Vincent P. | Article in Book | | 2011 |
| When histories collide : the third Home Rule bill for Ireland | Bartlett, Thomas | Article in Book | | 2014 |
| When the clock struck in 1916 : close-quarter combat in the Easter Rising | Kelly, DarrenMolyneux, Derek | Monograph or Collective Volume | Collins Press | 2015 |
| Where are they now? : plays of significance in the 1940s and 1950s | Murray, Christopher | Article in Book | | 2004 |
| Where was Wellington born? | Murray, Thomas Cornelius, 1873-1959 | Monograph or Collective Volume | The author | 1993 |
| Whitehall Diary. Volume 3 : Ireland 1918-1925 | Jones, ThomasMiddlemas, Keith | Monograph or Collective Volume | Oxford University Press | 1971 |
| Whitelaw's Essay on the Population of Dublin : a window on late eighteenth-century housing | Jordan, Thomas E. | Article in Journal | | 2011 |
| Whither Ireland? the next twenty-five years! | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1986 |
| Whitley Stokes and early Irish law | Charles-Edwards, Thomas | Article in Book | | 2011 |
| 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 wrote 'Lillibullero'? If not Tom Wharton, what about Robert Ware and Henry Wharton? | Ferguson, Kenneth | Article in Journal | | 2021 |
| Why read between the lines? : Derricke, paratext, and poetic reception | Iammarino, Denna J. | Article in Book | | 2021 |
| Why the Highlands did not starve : Ireland and highland Scotland during the potato famine | Devine, Thomas Martin | Article in Book | | 1995 |
| Why the Highlands did not starve. Ireland and Highland Scotland during the potato famine | Devine, Thomas Martin | Article in Book | | 2007 |
| Why were there so few papal provisions in thirteenth-century Dublin? | Smith, Thomas W. | Article in Book | | 2020 |
| Wicklow men in the Spanish American War of 1898 | O'Brien, Andrew | Article in Journal | | 2008 |
| William Dargan of Mount Anville | Mac Aonghusa, Brian | Article in Journal | | 2019 |
| William Hill and the Aera ironworks | Cowan, Thomas | Article in Journal | | 1987 |
| William J. Walsh, archbishop of Dublin, 1841-1921 | Morrissey, Thomas J. | Article in Journal | | 2008 |
| William J. Walsh, Archbishop of Dublin, 1841-1921 | Morrissey, Thomas J. | Article in Journal | | 2008 |
| William J. Walsh, Archbishop of Dublin, 1841-1921, no uncertain voice | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2000 |
| William Jackson and Thomas Paine | Emerson, N. D. | Article in Journal | | 1939 |
| William James Pirrie | Black, R. D. C. | Article in Book | | 1960 |
| William John Kelly - a Fenian | Foley, Bertie | Article in Journal | | 2016 |
| William Marshall's charter to Kilkenny, 1207 : background, dating and witnesses | Bradley, John, 1954-2014Murtagh, Ben | Article in Book | | 2017 |
| William Martin Murphy | Morrissey, Thomas J. | Monograph or Collective Volume | Dundalgan Press for the Historical Association of Ireland | 1997 |
| William Martin Murphy : an Irish press baron and the rise of the popular press | McCartney, Donal | Article in Book | | 1984 |
| William Martin Murphy : patriotic entrepreneur or 'a soulless, money-grubbing tyrant'? | Morrissey, Thomas J. | Article in Journal | | 2013 |
| William Martin Murphy, the employers and 1913 | Morrissey, Thomas J. | Article in Book | Dublin City Council | 2013 |
| William Mulready, eminent Victorian | Flynn, Pat | Article in Book | | 2000 |
| William O'Brien, 1881-1968 : socialist, republican, Dáil deputy, editor, and trade union leader | Morrissey, Thomas J. | Monograph or Collective Volume | Four Courts | 2007 |
| William Pilsworth (1899-1974) | Lucey, John | Article in Journal | | 2017 |
| William Ronan, SJ, 1825-1907. War Chaplain, Missioner, Founder of Mungret College | Morrissey, Thomas J. | Monograph or Collective Volume | Messenger Publications | 2003 |
| William T. Cosgrave and the foundation of the Irish Free State, 1922-25 : an analysis of the rise to power of William T. Cosgrave and his leadership in creating a structure of government in the Irish Free State | Reynolds, Brian A. | Monograph or Collective Volume | [Kilkenny People Printing] | 1998 |
| William Thomas Cosgrave | Jordan, Anthony J. | Article in Book | | 2016 |
| William Thomas Downie | Pollard, Kevin J. | Article in Journal | | 1994 |
| William Thomas Latimer (1842-1919); churchman and historian | Ó Conluain, Proinsias | Article in Journal | | 2006 |
| William Thomas Mulvany | Ryan, John | Article in Journal | | 1923 |
| William Thomas Mulvany : ein irischer Pragmatiker und Visionär im Ruhrgebiet 1806-1885 | Schmidt-Rutsch, Olaf | Monograph or Collective Volume | Stiftung Rheinisch-Westfälisches Wirtschaftsarchiv | 2003 |
| William Thompson and the socialist tradition | Lynch, Patrick, 1917-2001 | Article in Book | | 1966 |
| William Walker | Boyle, J. W. (John William) | Article in Book | | 1966 |
| Willis and the Press in the 1840s | Ó Murchú, Cathal | Article in Book | | 2002 |
| Willis and the Public Health movement | Jones, Stephanie | Article in Book | | 2002 |
| Window display : cultural and historical developments : case study of 'Brown Thomas' | Kearney, Mary-Anna | Article in Book | | 2004 |
| Wine, genealogy and cross-dressing | O'Halloran, Seán | Article in Journal | | 2018 |
| Witness in the city: a history of St. Thomas' Parish Church, Belfast | Douglas, Carol,Douglas, Colin,Douglas, Mervyn | Monograph or Collective Volume | [St. Thomas' Parish Church] | 2002 |
| Wolfe Tone and the republican ideal | Elliott, Marianne | Article in Book | | 1998 |
| Women and the Reformation in Tudor Ireland | Jefferies, Henry A. | Article in Journal | | 2022 |
| Women and trade unions | Daly, Mary E. | Article in Book | | 1994 |
| Women poets in early medieval Ireland : stating the case | Clancy, Thomas Owen | Article in Book | | 1996 |
| Women's philanthropy in late eighteenth-century Dublin : the Female Orphan House and the House of Refuge | Raughter, Rosemary | Article in Book | | 1998 |
| Women's political rhetoric and the Irish revolution | Knirck, Jason | Article in Book | | 2011 |
| Woodrow Wilson and his Presbyterian inheritance | Link, Arthur Stanley | Article in Book | | 1992 |
| Woodrow Wilson historians versus the Irish | Walsh, James P. | Article in Journal | | 1967 |
| Woodrow Wilson, Irish Americans and the election of 1916 | Leary, William | Article in Journal | | 1967 |
| Woodrow Wilson, life and letters. Vol. 7: | Baker, Ray Stannard | Monograph or Collective Volume | Heinemann | 1939 |
| Words in maps : Ireland seen by cartographers and writers from William Petty to Tim Robinson | Rossi, Massimo | Article in Book | | 2018 |
| Worker and society since 1945 | Lee, J.J. (John Joseph), 1942- | Article in Book | | 1980 |
| Works by Thomas Alfred Cobden : architect, 1794-1842 | MacLeod, Iona | Article in Journal | | 1987 |
| Wrestling with the angel : the typology of Israel in John Derricke's The image of Ireland | Siegfried, B. R. | Article in Book | | 2011 |
| Writing and fighting the Churchills : strange and surprising connections between the Churchills, the Hookes and Ireland | Byrne, Thomas | Article in Book | | 2012 |
| Writing in Gaelic since 1880 | McGonagle, Noel | Article in Book | | 1988 |
| Writing the war | Brown, Terence | Article in Book | | 2008 |
| Writings in connection with the Thomas Davis and Young Ireland centenary, 1945 | Nowlan, Kevin B. | Article in Journal | | 1945 |
| Writings on Irish railways | Wall, Thomas | Article in Journal | | 2003 |
| Wyckham, Dundrum|Wyckham, Dundrum: Correction | Magee, Sean | Article in Journal | | 2016 |
| York Road, past and present | Doyle, Thomas | Article in Journal | | 1993 |
| Yorkist and early Tudor England | Horrox, Rosemary | Article in Book | | 1998 |
| You have the right to refuse silence : Oscar Wilde's Prison Letters and Tom Clarke's Glimpses of an Irish Felon's Prison Life | Jarrin, Casey A. | Article in Journal | | 2008 |
| Youghal | O'Brien, A. F. | Article in Book | | 1995 |
| Young Ireland and French Romanticism | Oliver, Sean | Article in Book | | 1998 |
| Young Ireland and the writing of Irish history | Quinn, James | Monograph or Collective Volume | University College Dublin Press | 2015 |
| Young Ireland centenary : a symposium | Knowlan, K. B.O'Neill, Thomas Patrick | Article in Journal | | 1946 |
| Young Ireland centenary : a symposium | Nowlan, Kevin B.O'Neill, Thomas Patrick | Article in Journal | | 1946 |
| Young Ireland in a young Canada : Thomas D'Arcy McGee and the new nationality | Shanahan, David | Article in Journal | | 1997 |
| Young Ireland, Arthur Griffith, and republican ideology : the question of continuity | Maume, Patrick | Article in Journal | | 1999 |
| [Review article] Success comes to the nimble-footed: 'The Cambridge history of Irelandf' | Hoppen, K. Theodore | Article in Journal | | 2018 |
| ‘A nation perishing of political economy?' | Boylan, Thomas A.Foley, Timothy P. (Tadhg) | Article in Book | | 1996 |
| ‘Articles of advice sent from the lord lieutenant, from Drogheda, by Gilbert Gerrard, attorney general’, 1561 | Radcliffe, Thomas, 3rd earl of Sussex | Article in Book | | 2016 |
| ‘Bullworks against the furie of heresie’: Identity, Education, and Mission in the English Jesuit College of St Omers | Graffius, Jan | Article in Book | | 2018 |
| ‘Device for the reformation of Ireland’, c. 1585 | Williams, Thomas (?) | Article in Book | | 2016 |
| ‘Doing their bit’ : gendering the constitution of Protestant, Unionist and Loyalist identities | Ashe, FidelmaMcCluskey, Caireen | Article in Book | | 2015 |
| ‘I want to be all I can Irish’ : the role of performance and performativity in the construction of ethnicity | Sullivan, Thomas | Article in Journal | | 2012 |
| ‘Keep us alert / for the while remaining’: Kinsella at eighty | Tubridy, Derval | Article in Journal | | 2008 |
| ‘My lord chamberlain’s opinion touching the state of Desmond’s rebellion’, 1574 | Radcliffe, Thomas, 3rd earl of Sussex: | Article in Book | | 2016 |
| ‘Myth, fact and mystery’ : F.X. Martin, medievalist and historian of the 1916 rising | Bartlett, Thomas | Article in Book | | 2021 |
| ‘Of sheep and men’: The Annunciation to the Shepherds in the St Albans Psalter | Heslop, Thomas Alexander | Article in Book | | 2021 |
| ‘One of the best men of business we had ever met’ : Thomas Drummond, the boundary commission and the 1832 Reform Act | Spychal, Martin | Article in Journal | | 2017 |
| ‘The beginning and continuance of the rebels of Ireland, by degrees truly discovered’, c. 1592 | Lovell, Thomas | Article in Book | | 2016 |
| ‘The humble petition and offer of Sir Thomas Gerrard, knight, in the behalf of himself and the companions of his attempt for the planting and inhabiting of the Glens and part of Clandeboye in the north of Ireland’, 1570 | Gerrard:, Thomas | Article in Book | | 2016 |
| ‘The Party Hack, and Tool of the British Government’ : T.P. O'Connor, America and Irish Party resilience at the February 1918 South Armagh by-election | Doherty, Erica | Article in Journal | | 2015 |
| ‘Thomas Alen (?): Matters for the good government of Ireland’, 1558 | | Article in Book | NA | 2016 |
| “Let no man write my epitaph” : the contributions of Percy Shelley, Thomas Moore and Robert Southey to the memorialisation of Robert Emmet | Morgan, Alison | Monograph or Collective Volume | | 2014 |
| “The Lumper” : an analysis of its role in the Irish famine, 1845-50 | Downey, Thomas | Article in Journal | | 1996 |
| “The Statute of Westminster, 1931 : an Irish perspective” | Mohr, Thomas | Article in Journal | | 2013 |