A ruler who fell in love with Enid (Enide) when he met her during her distressing journey with Geraint.
He threatened to kill Geraint unarmed in order to take Enid, but Enid convinced him to abduct her during the night instead. Then, in their quarters, she warned Geraint of the plan so that they could escape. The Brown Earl pursued them, but Geraint defeated him in combat.
He is known in Chrétien’s Erec as Galoain.
Source
Geraint and Enid | 13th century