King Canute died here in 1035, though he was buried at Winchester. Edward the Confessor licensed a third mint for the town. By the time of the Norman conquest in 1066 Shaftesbury had 257 houses, though many were destroyed in the ensuing years of conflict, and by the time the Domesday Book was compiled twenty years later, there were only 177 houses remaining, though this still meant that Shaftesbury was the largest town in Dorset at that time. In the first English civil war (1135–1154) between Empress Matilda and King Stephen, an adulterine castle or fortified house was built on a small promontory at the western edge of the hill on which the old town was built. The site on Castle Hill, also known locally as Boltbury, is now under grass and is a scheduled monument.