Cellach mac Fíonachta
Irish royal
About Cellach mac Fíonachta
Cellach mac Fíonachta, fl. 9th century, ancestor of Ó Ceallaigh (Kelly) of County Galway.
Cellagh was a grandson of king Ailell mac Inreachtach of Uí Maine (died 791/799). He never became king himself, but his grandchildren and their descendants, the Uí Ceallaigh, monopolised the kingship. The first Ó Ceallaigh ruler was Aodh Ua Cellaigh, who was killed at the battle of Clontarf, fighting on the side of Brian Boru. His last descendant to rule the kingdom was Feardorcha Ó Cellaigh (died c. 1611). Ó Ceallaigh, O'Kelly and Kelly is one of the most populous surnames in County Galway.
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
Frequently asked questions
Who was Cellach mac Fíonachta?
Irish royal
Sources & further reading
· Wikipedia: Cellach mac Fíonachta
· DBpedia: Cellach mac Fíonachta
Cite this page
APA: Biography.guide. (2026). Cellach mac Fíonachta. https://biography.guide/cellach-mac-fionachta/
MLA: "Cellach mac Fíonachta." Biography.guide, https://biography.guide/cellach-mac-fionachta/.
Chicago: "Cellach mac Fíonachta." Biography.guide. https://biography.guide/cellach-mac-fionachta/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
Page generated 2026-09-27 05:30 UTC