century BC Ailill Finn, legendary High King of the 8th century BC Ailill Caisfhiaclach, legendary High King of the 5th century BC Ailill mac Echach Mugmedóin...

Ailill Caisfiaclach ("having crooked/hateful teeth"), son of Connla Cáem, was, according to medieval Irish legends and historical traditions, a High King...

of Ireland. He came from Munster, killed the previous incumbent, Ailill Caisfhiaclach, and reigned for five years, until he was killed by Eochaid Ailtleathan...