A wich town, particularly one of several former salt mining towns in Cheshire with a name ending -wich.
Droitwich was then clearly more important than any of the Cheshire wiches; indeed the two most northerly of them were reported in 1086 to be "utterly waste", while Nantwich farm was worth only £10 a year. (Can we date this quote?), Edward Hughes, Studies in Administration and Finance 1558-1825, Manchester University Press, page 21: