The borough was created by charter of Hugh du Puiset, bishop of Durham in c.1180-1183, probably in the hope that it would generate the same degree
The modern city of Sunderland, which now lies in the metropolitan county of Tyne and Wear, was part of County Durham before the re-organization of
The borough of Sunderland was in the hands of the bishop of Durham, Although its charter conferred certain privileges, effective authority remained
The government of Sunderland was determined by its status as a medieval borough.
Few local court records survive for Sunderland in the medieval and early modern periods.