Niall Mór O'Neill
Peerage person ID=546394
About Niall Mór O'Neill
Niall Mór O'Neill (Irish: Niall Mór Ó Néill) was a lord of Clandeboye in medieval Ireland. He succeeded his father, Conn O'Neill, to the lordship after his death in 1482. He reigned until his own death in 1512, after which he was succeeded by his son Hugh O'Neill. O'Neill's nickname Mór meant "great".
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Important facts
Frequently asked questions
Who was Niall Mór O'Neill?
Peerage person ID=546394
When did Niall Mór O'Neill die?
Niall Mór O'Neill died on 11 August 1512.
Sources & further reading
· Wikipedia: Niall Mór O'Neill
Cite this page
APA: Biography.guide. (2026). Niall Mór O'Neill. https://biography.guide/niall-mor-o-neill/
MLA: "Niall Mór O'Neill." Biography.guide, https://biography.guide/niall-mor-o-neill/.
Chicago: "Niall Mór O'Neill." Biography.guide. https://biography.guide/niall-mor-o-neill/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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