Urchadh mac Murchadh

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Urchadh mac Murchadh (also called Archad Dearg) (died 943) was King of Maigh Seóla.[1]


Urchadh is one of the earliest attested kings of Uí Briúin Seóla, whose rulers also seem to have exercised some authority over Iar Connacht. His dynasty, the Muintir Murchada, took their name from his father, Murchadh mac Maenach. The Ó Flaithbertaigh family would later claim him as an ancestor.


Urchadh had an elder brother called Urumhain or Earca.

In addition to his son and successor, Donnchadh, he had three known daughters who achieved notable marriages:

Through his daughter Bé Binn, Urchadh was the maternal grandfather of Brian Boru, High King of Ireland (941-1014).

Preceded by
Cléirchén mac Murchadh
King of Maigh Seóla
Succeeded by
Donnchadh mac Urchadh

See also[edit]


  • 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
  • Annals of Tigernach at CELT: Corpus of Electronic Texts at University College Cork
  • Revised edition of McCarthy's synchronisms at Trinity College Dublin.
  • Byrne, Francis John (2001), Irish Kings and High-Kings, Dublin: Four Courts Press, ISBN 978-1-85182-196-9
  1. ^ A Chorographical Description of West Or H-Iar Connaught: Written A.D. 1684 by Roderic O'Flaherty, page 365, https://archive.org/details/achorographical00oflgoog/page/n385