Note 226 — Chapter VI · DISTRIBUTION AND CHARACTERISTICS OF MOTTE-CASTLES
Reading edition
Thus Henry I. erected a siege castle to watch Bridgenorth (probably Pampudding Hill), and then went off to besiege another castle. Mr Orpen kindly informs me that the camp from which Philip Augustus besieged Château Gaillard contains a motte. Outside Pickering, Corfe, and Exeter there are earthworks which have probably been siege castles.