Pembroke Castle was originally an 11th century earth and timber ringwork fortress, founded by Earl Roger of Montgomery. In 1189, William Marshal, earl of Pembroke founded the stone castle, when adding the Great Tower and much of the Inner Ward. His five sons, enlarged and strengthened the castle and in the 13th century William de Valence, added the outer bailey curtain wall, flanked by huge round towers and a remarkable gatehouse. The castle is the birthplace of King Henry VII and nearby are the town wall and Barnard's Tower. 5 miles north-east is Carew Castle and 6 miles south-east is Manorbier Castle.