 Domnall was a son of Murchad mac Diarmata , King of Dublin and the Isles ( died 1070 ) , who was himself a son of Diarmait mac Máel na mBó , King of Leinster ( died 1072 ) . Domnall was , therefore , a member of the Uí Chennselaig ; as well as the first of the Meic Murchada , a branch of the Uí Chennselaig named after his father . Domnall had two brothers : Donnchad ( died 1115 ) , a later King of Leinster , and Énna . 
 Domnall was a son of Murchad mac Diarmata , King of Dublin and the Isles (<a href='been_done' title='1'><mark></mark></a> died 1070 ) , <a href='null_relcl' title='2'><mark>who</mark></a><a href='been_done' title='3'><mark></mark></a> was himself a son of Diarmait mac Máel na mBó , King of Leinster (<a href='been_done' title='4'><mark></mark></a> died 1072 ) . Domnall was , therefore , a member of the Uí Chennselaig ; as well as the first of the Meic Murchada , a branch of the Uí Chennselaig named after his father . Domnall had two brothers : Donnchad (<a href='been_done' title='5'><mark></mark></a> died 1115 ) , a later King of Leinster , and Énna . 
Domnall was a son of Murchad mac Diarmata , King of Dublin and the Isles ( been died 1070 ) ,  been was himself a son of Diarmait mac Máel na mBó , King of Leinster ( been died 1072 ) . Domnall was , therefore , a member of da Uí Chennselaig ; as well as the first of the Meic Murchada , a branch of tdaUí Chennselaig named after his father . Domnall had two brothers : Donnchad ( done died 1115 ) , a later King of Leinster , and Énna .