Across large areas of northern and eastern England, we find many place names that end with either -by or -thorpe, both of which are elements imported from Old Norse. It was at this point, for example, that the monastery founded by St Hild at Streaneshalch became known as Whitby, and the settlement that had been Northworthig was renamed Derby. Almost half the place names in Yorkshire recorded in the Domesday Survey of 1086 had such Scandinavian origins.
