Domnall was a son of Tadc, son of Toirdelbach Ua Briain, King of Munster.
Domnall was, therefore, a member of the Meic Taidc.
According to the twelfth-century Banshenchas, Domnall's father married Mór, daughter of Echmarcach mac Ragnaill, King of Dublin and the Isles.
This source specifies that the couple had three sons and a daughter: Amlaíb, Bé Binn, Donnchad, and Domnall himself.
Domnall was a son of Tadc, son of Toirdelbach Ua Briain, King of Munster. Domnall was, therefore, a member of the Meic Taidc. According to the twelfth-century Banshenchas, Domnall's father married Mór, daughter of Echmarcach mac Ragnaill, King of Dublin and the Isles. This source specifies that the couple had three sons and a daughter: Amlaíb, Bé Binn, Donnchad, and Domnall himself.
Domnall mac Taidc