1. The early town, still known as Castleton, was strongly defended by walls, part of which survive as lines in property boundaries. Entry was via three gates in the west, north and north-east. The enlarged suburb also appear to have been defended as gates in Market and High Streets are recorded. The line of any walls for this phase is uncertain.

2. Associated with:
Castle (Nprn94235)
Medieval & later borough (Nprn33201).