He
was the son of Fintan, son of Finloga, prince of South Muster, and Gelgesia,
daughter of Aedhfinn, prince of Hy-Briuin in
Connaught.
He was born probably amongst the Hy-Bruin, and was baptized by St. Brendan
the Traveller, his father's uncle, who then ruled a monastery in the
Island of
Oirbsen, now called Inisquin in Lough
Corrib...