Donnchad O'Brien King of Munster

Donnchad O'Brien King of was born in 0989.  Donnchad O'Brien King of's father was Brian Boru King of Ireland and his mother was Gormflaith.  His paternal grandparents were Cennetig Thomond macLorcain King of Thromond and Be Bind Ingen Urchada; his maternal grandparents were Murchad Leinster and Princess Connacht. He had a brother named Tadhg O'Brien King Of.  He was the older of the two children.  He died at the age of 75 in 1064.

He had a biological daughter named deb-Forgaill O'Brien of.