Gwrin Farfdrwch, King of Meirionydd
Gwrin Cut-Beard was King Cadwaladr's son. He presumably wore a neatly trimmed beard. Geoffrey of Monmouth transfers him back in time to become one of his more legendary Kings, Gurguit Barbtruc. If his stories relate to the historical figure, then Gwrin led a successful campaign against "the Danes" (presumably Saxon raiders). He married Princess Marchell daughter of King Brychan Brycheiniog in the early 6th century and was supposed to have been buried in Caer-Legeion-guar-Uisc (Caerleon).