Medieval castles were sometimes built within earlier sites, reusing the earthworks of Iron Age hill forts for instance as was the case at British Camp. A ringwork and bailey castle, known as Colwall Castle as well as The Herefordshire Beacon, was built within the Iron Age hill fort, probably in the ten years immediately before 1066. Quite possibly the builder was Earl Harold Godwinson, the future King Harold II of England. Earl Harold is recorded as building another fortress in the county at Longtown Castle. The castle would appear to have been refortified during The Anarchy of the reign of King Stephen. Before 1148 the fortress was held by Waleran de Beaumont, 1st Earl of Worcester. The castle appears to have changed hands again in 1151 and 1153 when attacked by royalists. At this time it was defended by the men of Earl Waleran's brother, Robert de Beaumont, 2nd Earl of Leicester. The castle was finally destroyed by King Henry II in 1155 and mentioned in passing by William Langland before 1386.