William the Lion pushed south from Scotland in 1173 .
Bowes Castle was damaged in the raids ; work was carried out in anticipation of further attacks the following year , including repairs to the chamber , gates and the construction of bulwarks around the keep .
William the Lion pushed south from Scotland in 1173 and Bowes Castle was damaged in the raids ; work was carried out in anticipation of further attacks the following year , including repairs to the chamber , gates and the construction of bulwarks around the keep .