Muiredach O'Brian, King of Leinster

Abt 770 - 818  (48 years)

• Name	Muiredach O'Brian
  Title	King of Leinster
  Birth	Abt 770	Leagaun, Galway, Ireland
  Gender	Male
  Death	818	County Dublin, Ireland
  Person ID	I9521	footsteps
  Last Modified	1 Jul 2025

  
  

  Father	Bran Ardchenn Mac Muiredaig,   b. Abt 730, Leagaun, Galway, Ireland d. 795, County Dublin, Ireland (Age 65 years)
  Relationship	natural
  Mother	Eithne Inghean Domnall,   b. Abt 750, Breaghwy, Ireland d. 6 May 795, Cell Caile Dumai, Ireland (Age 45 years)
  Relationship	natural
  Family ID	F5144	Group Sheet  |  Family Chart

  
  

  Family	Etromma ferch Finddelbach,   b. Abt 785   d. Yes, date unknown
  Children	+ 1. Dúnlaing mac Muiredaig,   b. Abt 800, Leagaun, Galway, Ireland d. 869, County Dublin, Ireland (Age 69 years)  [Father: natural]  [Mother: natural]
  Family ID	F5145	Group Sheet  |  Family Chart
  Last Modified	1 Jul 2025

  
  

• Notes

  Muiredach mac Brain (died 818) was a King of Leinster of the Uí Muireda i g s e p t o f the Uí Dúnlainge branch of the Laigin. This sept had their r o y a l s e at at Maistiu (Mullaghmast) in South Kildare. He was the son of B r a n A r d chenn mac Muiredaig (died 795), a previous king. He ruled from 8 0 5 t o 8 0 6 a nd again from 808 to 818. Though not listed in the king list in the Book of Leinster, he is menti o n e d i n t he Irish annals. He is given the title leth-ri (one of two kin g s ) a t h i s death in 818 (Annals of Ulster) and ruled in conjunction wit h M u i r e dach mac Ruadrach (died 829) of the Uí Fáeláin sept.