in 690 - 700 A.D. and the remainder in 1066 by William I. The outerwalls and a great portion of the Castle was undermined and blown up with gunpowder, so great pieces of masonry lie upturned all round.
King Edward I was Killed here and his body afterwards hidden in a well close by. During the siege, they stripped the lead from the roof of the church and used them for bullets. For further information see Guide Book