| 'A volley of execrations' : the letters and papers of John Fitzgibbon, Earl of Clare, 1772-1802 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2005 |
| Earl of Clare, mainspring of the Union | Fitzgibbon, Elliot | Monograph or Collective Volume | Research Pubg. Co. | 1960 |
| John FitzGibbon, earl of Clare | Kavanaugh, Ann C. | Article in Book | | 1993 |
| John Fitzgibbon, Earl of Clare : protestant reaction and English authority in late eighteenth-century Ireland | Kavanaugh, Ann C. | Monograph or Collective Volume | Irish Academic Press | 1997 |
| Lord Clare | Falkiner, C. L. (Caesar Litton) | Article in Book | | 1902 |
| Lord Clare and his historical reputation | Kavanaugh, Ann C. | Article in Journal | | 1993 |
| Mountshannon house and the Fitzgibbons | Gurnett, Carole | Article in Journal | | 1984 |
| Some Fitzgibbon letters from the Sneyd muniments in the John Rylands Library | McDowell, R. B. (Robert Brendan), 1913-2011 | Article in Journal | | 1952 |