Constantine Corneu, King of Dumnonia
(Welsh-Custennin, Latin-Constantinus, English-Constantine)
He succeeded his father, Cunomor, in the early 5th century. His name means "Constantine of Cornwall", and some say one of his sons was Uther Pendragon, High-King of Britain and father of King Arthur. However, this is probably due to confusion with Constantine's distant cousin and namesake, the King of Brittany and short lived Emperor of Britain & Gaul. Constantine Corneu died in 443, when, following Celtic tradition, his Kingdom was split between his two sons.