Son of Cynfarch and one of Arthur’s Three Golden-Tongued Knights of the Island of Britain. He apparently had a particular skill with speech.
He was the brother of Urien, the father of Mordred, and thus the Welsh counterpart of Lot. In the Welsh translation of Geoffrey’s Historia, he is also named as the husband of Anna (Arthur’s sister) and father of Gwalchmei (the Welsh counterpart of Gawain).
He may be identical to Lluch Lleawg.