Donnchadh mac Urchadh (died 959) was the King of Maigh Seóla.
Nothing certain seems to be known about Donnchadh, Although he is believed to have been an uncle of Brian Boru. He is not listed in the genealogies.
References
- West or H-Iar Connaught Ruaidhrí Ó Flaithbheartaigh, 1684 (published 1846, ed. James Hardiman).
- Origin of the Surname O'Flaherty, Anthony Matthews, Dublin, 1968, p. 40.
- Irish Kings and High-Kings, Francis John Byrne (2001), Dublin: Four Courts Press, ISBN 978-1-85182-196-9
- Annals of Ulster at CELT: Corpus of Electronic Texts at University College Cork
- Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, ISBN 978-1-85182-196-9