HiGeraldine...yes I did review your messages and as I have discovered there are a great many Dewhursts in the Lancashire area.All of mine appear to be centered around Whalley and Clitheroe, with a few moving to Blackburn at later dates.
I don't think we have a match but will keep the information at hand just in case.
By the way, I am searching Bennetts and Haworths in Preston as well. Good luck with your search. Sandi