Cathal mac Áedo Flaind Chathrach (died 627)[1] was a King of Cashel in Munster from the Glendamnach sept of the Eoganachta.
He was the son of Áed Fland Cathrach and grandson of Coirpre Cromm mac Crimthainn (died 577)[2] a previous king of Cashel.
According to an old saga poem Mór of Munster and the Violent Death of Cuanu mac Ailchine, he married the widow of his predecessor Mór Muman (died 636) who was the daughter of Áed Bennán mac Crimthainn (died 618) of the Loch Lein Eoganachta of West Munster thereby assuring his right to rule at Cashel.
[3] Mór marries Ruithcern to Lonán mac Findig who is a close ally of Cathal's, probably of the Éile.
Lonán takes offence at this request and leaves Cashel taking his wife with him planning to stay with his wife's family, the sons of Áed Bennán, but en route, he is attacked and wounded by Cuanu mac Ailchine of the Fir Maige Féne who abducts Ruithchern.