Cosgrach mac Flannbhrath
However, he was a son of King Flannabhra (died 773) and succeeded his brother, Flathghal mac Flannbhrath, in 782. He reigned for fully thirty years, and it is from him that all subsequent kings of Umaill appear to descend. However, the exact succession is unclear for many generations after Cosgrach's death.
Flathghal mac Flannbhrath
|King of Umaill
Cairbre mac Cinaedh
- The History of Mayo, pp. 388–89, T.H. Knox, 1908.