Earl of Cornwall. A Gascon who was brought up in the English royal household as the foster-brother of the future Edward II, he exploited the king’s infatuation for him. Edward gave him the earldom of Cornwall in 1307, and appointed him Regent of England (1307–08). The enraged English barons called for his banishment; Edward twice complied (1308, 1311), but Gaveston returned and in 1312 was killed by the Earl of Warwick.