Tadhg Cael Uisce Ó Briain was the eldest son of Conchobhar na Siudane Ó Briain and Tánaiste of Thomond.
Life
He received the suffix "Cael Uisce" from the having attended the conference of Cael Uisce on behalf of his father and refusing to acknowledge Brian Ua Néill as High King. He died in 1259, pre-deceasing his father. ==Family==