Slawston, in the Gartree Hundred of Leicestershire, is an Anglo-Scandinavian hybrid from the Old Norse male personal name Slagr (Middle English genitive singular Slages), which appears to be originally a byname either from slœgr ‘sly, cunning’ or, less likely, from slagr ‘a blow, a stroke’ and the Old English element tun ‘farm, settlement’.
This village might have been an Anglian settlement that was appropriated by a Scandinavian from the Viking army which disbanded in the area around 877 rather than a later manorial creation.
Slawston is near Blaston, another township with a hybrid Old English/Old Norse place-name which could represent a similar appropriation.