Hi Joanna,
I have the name Cotton on Magdalene Street and also Rowley/Tan Yard off Magdalene Street. Cutchey also around there quite early but no specific address.
Squires in St. Peter's Court.
The mustard and vinegar factory, shown on an 1888 map, is in buildings at the back of othes on Magdalene Street, between Cross Keys Yard and Old Cross Keys Yard (which were opposite Magdalene College). It looks as though it might have access to a section of water leading off from the river Cam.
Best wishes,
Selina
