was intended as a largely unfortified summer residence for the Abbot. With the increased threat from Scotland and the granting of the licence to crenellate, Emery suggests that the inner bailey wall was then constructed to better defend the keep, followed by the outer bailey wall in a final phase of work.

rightIn 1408, the Abbot John Bolton decided that the cost of maintaining the castle was excessive, and attempted to pull down the defences, but was