Murtogh O'Brien
d. 1343
Vitals
Family
About
Murtogh O'Brien, lord of Thomond, died in 1343, and O'Hart's pedigree styles him founder of the houses of Thomond and Inchiquin - the stem from which both later O'Brien peerages branch. By his second wife Edaoin MacGorman the line of this family descends.
Research notes
✓ (O'Hart, Irish Pedigrees (1892), 'O'Brien (No.1) King of Thomond', gen. nos. as cited; corroborated by the Annals of the Four Masters and by the DC782/R-L226 O'Brien Y-DNA study (which independently numbers this same descent 105 Brian Boru -> 120 Turlogh Donn). Wired 23 Jul 2026.): MURTOGH O'BRIEN (No.115), d. 1343 - FOUNDER OF THE HOUSES OF THOMOND AND INCHIQUIN (so O'Hart). m. 2nd Edaoin (Edina), dau. of MacGorman of Ibrackan, his standard-bearer - mother of Maithan (our line). Direct ancestor.