In Jocelyn's Life of St. Kentigern, King Rederech of Strathclyde discovers Queen Languueth's affair with a soldier, to whom she gave a ring.
Urien joined with other northern kings, Rhydderch Hael "the Generous" of Strathclyde and two other descendants of Coel, Gwallog mab Llaenog and Morgant Bwlch.