Claim: Hereford Castle(founded before 1052) is a manor in Herefordshire, England that was rebuilt by William FitzOsbern, Earl of Hereford and father of Roger FitzOsbern who was involved in an unsuccessful attempt to depose King William .
Evidence: Founded sometime before 1052, it was one of the earliest castles in England. Hereford Castle is a castle that used to be in the cathedral city of Hereford, the county town of Herefordshire, England (grid reference ). Shortly after the Norman Conquest in 1066, William FitzOsbern was made Earl of Hereford. He may have rebuilt the castle as it was in use in 1067 when the Anglo-Saxon Chronicle noted that Eadric the Wild harassed its garrison. In 1071 William FitzOsbern died and his son Roger took over possession of the castle. He was involved in an unsuccessful attempt to depose King William and consequently forfeited the castle.