DO

Dermod O'Brien

d. 1120

Vitals

Died
1120

Family

Parents
TM
Turlogh Mor O'Brien
1009 – 1086
MO
Mor O'Hyne
Spouse
SM
Sadhbh MacCarthy
Children
TO
Turlogh O'Brien
d. 1167

About

Dermod O'Brien was King of Munster in the late eleventh century, in the long contest between the O'Briens and the other provincial dynasties for the high kingship.

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.): DERMOD O'BRIEN, KING OF NORTH MUNSTER - succeeded his brother Murtogh 1116; d. 1120, interred at Killaloe. m. Sadhbh, dau. of Teige MacCarthy Mor, Prince of Desmond (a MacCarthy/Eoghanacht splice - the rival Munster royal house). Father of Turlogh (our line). Direct ancestor.

‹ All people