| 'Soldier of Christ' : the political and ecclesiastical career of Nicholas French, Catholic bishop of Ferns (1603-1678) | McHugh, Jason | Thesis | | 2005 |
| Bishop Nicholas French and the Second Ormond Peace, 1648-9 | Corish, Patrick J. | Article in Journal | | 1948 |
| Catholic clerical responses to the Restoration : the case of Nicholas French | McHugh, Jason | Article in Book | | 2008 |
| Nicholas French, bishop of Ferns, and the peace with Ormonde, 1649 | Corish, Patrick J. | Article in Journal | | 1947 |
| The obligation of Titus: a theological opinion concerning worthiness for episcopal office in the diocese of Ferns, 1645 | McHugh, Jason | Article in Journal | | 2017 |