 Complete the following phrase:  At the time of the Domesday Book Taunton belonged to the Bishop of Winchester, who had a minster or Augustinian Priory on the site. Between 1107 and 1129 William Giffard the Chancellor of King Henry I, converted the bishops hall into a castle. In 1216, Bishop Peter des Roches, a supporter of King John, defended the castle during a barons revolt. By the late 12th century the keep measured by with a first floor great hall over a stone vaulted undercroft. During the 