sentences:  Bernard may well have already been in power in Brycheiniog by 1088 if he had already inherited a claim to it after the defeat of Roger de Breteuil, Earl of Hereford, in 1075.In 1088 the king, William Rufus, confirmed a previous charter of Bernard's stating that he had already made an exchange "within his lordship of Brycheiniog" at Glasbury.He also already held Castell Dinas which had probably been built by the Earl of Hereford before 1075.