What little is known comes from the usual sources (mainly Loomes) which record a lantern clock signed William Banks in Sheffield, two longcases and a late 17th century watch signed Banks Nottingham.
A William Bankes is listed as working in London between 1690-1700 but whether this is the same man is uncertain.
A ‘William Banks Sheffield’ marquetry longcase sold at Bonhams in June 2017 (photo above shows the finely engraved signature).
The movement displays many idiosyncratic features which would be instructive to compare with other clocks by Banks, but it has so far proved impossible to locate any other surviving clocks or watches, or indeed any further details about his life and death.
If anyone can provide any leads or information about this highly competent craftsman I would be very pleased to hear from them in total confidence at email@example.com.