Urbin of the Mountain
A tyrant defeated by Gawaine in the Fourth Continuation of Chrétien’s Perceval, possibly identical to Chrétien’s Harpin.
He was the father of Brun and the lady Bloiesine (Bloisine). Bloiesine prevented Gawaine from killing her father.
Source
Fourth Continuation of Chrétien’s Perceval | Gerbert de Montreuil, c. 1230