| Crioch Branach : the O'Byrnes and their country | Nicholls, K. W. (Kenneth W.) | Article in Book | | 1998 |
| Feagh McHugh and the Ulster princes : his role in their Dublin Castle escapes | Mac Eiteagáin, Darren | Article in Book | | 1998 |
| Feagh McHugh O'Byrne : firebrand of the Wicklow mountains | O'Brien, Conor, 1933- | Article in Journal | | 2000 |
| From spark to a firebrand: Feagh Mac Hugh O'Byrne | Lawlor, Chris | Article in Journal | | 2013 |
| Golden jubilee, 1931-81 : dedicated to most Rev. Donal J. Herlihy, bishop of Ferns, on the occasion of the golden jubilee of his priesthood, 4th April 1981 | Anonymous | Monograph or Collective Volume | Hugh O'Byrne | 1981 |
| In Tyrone's shadow : Feagh McHugh O'Byrne, forgotten leader of the Nine Years War | Edwards, David, 1963- | Article in Journal | | 1998 |
| O'Bryne genealogical charts | Nicholls, K. W. (Kenneth W.) | Article in Book | | 1998 |
| Perrot's poison plot | Morgan, Hiram | Article in Journal | | 1998 |
| Settlement and social life in Feagh McHugh O'Byrne's Ballinacor | Long, Harry | Article in Journal | | 1998 |
| The Battle of Glenmalure, 25 August 1580 - cause and course | O'Byrne, Emmett | Article in Journal | | 1998 |
| The Byrnes of Ballymanus and the Gabhal Raghnaill connection | O'Brien, Conor, 1933- | Article in Journal | | 1998 |
| The genealogy of the O'Byrnes of Ranelagh | Nicholls, K. W. (Kenneth W.) | Article in Journal | | 1998 |
| The life and times of Feagh MacHugh O'Byrne (c.1544-1597) | O'Brien, Andrew | Article in Journal | | 1997 |
| The O'Byrne Sept of Knockrath | Nicholls, K. W. (Kenneth W.) | Article in Journal | | 1998 |
| The riddle of Rose O'Toole | MacCarthy, B. G. | Article in Book | | 1947 |
| The rise of Gabhal Raghnaill | O'Byrne, Emmett | Article in Journal | | 1998 |
| The rise of the Gabhal Raghnaill | O'Byrne, Emmett | Article in Journal | | 1998 |
| Tudor rule in Gaelic Leinster and the rise of Feagh McHugh O'Byrne | Donovan, Brian C. | Article in Journal | | 1998 |