Conchobar O'Donnell

Conchobar mac Aodha Ó Domhnaill was the eighth O'Donnell chief and king of Tyrconnell from 1333. He succeeded his father Aodh, but first had to defeat the claim of his younger brother Art, whom he killed in battle.

As lord of Cenél Conaill he ruled over lower Connacht, Fermanagh and Inishowen. In 1342 his brother Niall attacked him at night in his fortress of Murbhach and killed him, seizing the kingship.