| ‘To solitude consigned’ : the Tasmanian journal of William Smith O’Brien, 1849-1853 | | Monograph or Collective Volume | Crossing Press | 1995 |
| 'The last of the hereditary bards of Thomond' Séamus Mac Cruitín, 1815-70 | Ó Dálaigh, Brian | Article in Journal | | 2007 |
| A Clareman in Van Diemen's land : the Tasmanian journal of William Smith O'Brien | Nolan, William | Article in Journal | | 1992 |
| An Irish rebel in Greece: William Smith O'Brien's 1856 visit | Davis, Richard | Article in Journal | | 2009 |
| Beyond the seas : the transportation of William Smith O'Brien | Kavanagh, Joan | Article in Book | | 1998 |
| Canon and martial law : William O'Brien, catholicism and Irish nationalism | Newsinger, John | Article in Journal | | 1981 |
| Catholic participation in the diplomacy of the Southern Confederacy | Stock, Leo Francis | Article in Journal | | 1930 |
| Clearing the estates to fill the workhouses : King's County land agents and the Irish Poor Law Act, 1838 | Reilly, Ciarán J. | Article in Book | | 2011 |
| Daniel Doyle: Young Irelander | Fenton, Laurence | Article in Journal | | 2015 |
| Famous Irish prisoners : 14, more about Smith O'Brien | Piondar, Sean | Article in Journal | | 1946 |
| La ville de New York vue par les nationalistes irlandais dans la seconde moitié du XIXe siècle | Saison, Ghislaine | Article in Book | | 2000 |
| Letters of Irish interest | | Article in Journal | | 1948 |
| Memorial in favour of William Smith O’Brien, Kingstown, 1848 | Anonymous | Article in Journal | | 1995 |
| O'Connell's liberal rivals in 1843 | Sloan, Robert | Article in Journal | | 1996 |
| Revolutionary imperialist : William Smith O'Brien, 1803-1864 | Davis, Richard | Monograph or Collective Volume | Lilliput | 1998 |
| Seduced by sociability, cards and port wine : the misspent youth of William Smith O'Brien | Davis, Richard | Article in Journal | | 2013 |
| Sharman Crawford on the repeal question, 1847 | Kennedy, B. A. | Article in Journal | | 1949 |
| Smith O'Brien and the 'secession' | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| Smith O'Brien and Young Ireland | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1947 |
| Smith O'Brien's retribution | Ó Cathaoir, Brendan | Article in Journal | | 1985 |
| Some aspects of William Smith O'Brien's parliamentary career : his links with the Royal Dublin Society | Heaney, Carmel | Article in Book | | 2009 |
| The 1848 petitions : the William Smith O'Brien petition/records at the National Archives of Ireland | | Monograph or Collective Volume | Eneclann | 2001 |
| The 1848 William Smith O'Brien petition | Medlycott, Elinor (née Nuttall) | Article in Journal | | 2002 |
| The charities and famine in mid-nineteenth-century Ireland | O'Neill, Timothy P. | Article in Book | NA | 1999 |
| The foundation of the National Library of Ireland, 1836-1877 | Long, Gerard | Article in Journal | | 1991 |
| The funeral of William Smith O'Brien | McMahon, Jerry | Article in Journal | | 1990 |
| The rebel in his family : selected papers of William Smith O'Brien | Davis, MarianneDavis, Richard | Monograph or Collective Volume | Cork University Press | 1998 |
| The reluctant rebel : William Smith O'Brien | Davis, Richard | Article in Journal | | 1998 |
| The Times versus William Smith O'Brien | Touhill, Blanche M. | Article in Journal | | 1982 |
| The Tinsley portrait sketches of the Wiliam Smith O'Brien trial | Forbes, J. D. | Article in Journal | | 1953 |
| Travels of William Smith O'Brien in Europe and the wider world 1843 to 1864 | Davis, Richard | Monograph or Collective Volume | Geography Publications | 2013 |
| William Smith O'Brien | Gwynn, D. R. (Denis Rolleston), 1893-1972 | Article in Journal | | 1946 |
| William Smith O'Brien 1803-1864 | Bugler, Paul | Article in Journal | | 2003 |
| William Smith O'Brien : Ireland 1848 - Tasmania | Davis, Richard | Monograph or Collective Volume | Geography Publications | 1989 |
| William Smith O'Brien and his Irish revolutionary companions in penal exile | Touhill, Blanche M. | Monograph or Collective Volume | University of Missouri Press | 1981 |
| William Smith O'Brien and his second | De Bhaldraithe, Pádraig | Article in Journal | | 1989 |
| William Smith O'Brien and the American civil war | David, Richard | Article in Journal | | 1993 |
| William Smith O'Brien and the Young Ireland rebellion of 1848 | Sloan, Robert | Monograph or Collective Volume | Four Courts | 2000 |
| William Smith O'Brien in Van Diemen's Land | Heaney, Carmel | Article in Journal | | 1998 |
| William Smith O'Brien in Van Diemen's land 1849-1864 | Cussen, John | Article in Journal | | 1988 |
| William Smith O'Brien, 1803-1864 | Heaney, Carmel | Monograph or Collective Volume | Donatus Press | 2004 |
| William Smith O'Brien, 6th October 1803 - 18th June 1864 | O'Brien, Brendan | Article in Journal | | 1998 |
| William Smith O'Brien, an scoláire Gaeilge | Mac Peaircín, Liam, 1938-2019 | Article in Journal | | 2002 |
| William Smith O'Brien, Poor Laws and convicts | Davis, Richard P. | Article in Book | | 2011 |
| William Smith O'Brien. A plea for mercy from the people of Ireland | Duffy, Godfrey | Article in Journal | | 1994 |
| William Smith O’Brien : petitions of mercy | Duffy, Godfrey F. | Article in Journal | | 1995 |
| William Smith O’Brien as an imperialist | Davis, Richard | Article in Book | | 1995 |
| William Smith O’Brien’s secret family | Weir, Hugh W. L. | Article in Journal | | 1996 |