Researching my THURSTON relatives from Wales, who apparently cut and milled timber in the Forest of Dean during the 1910's and early 1920's.

Am interested in a) contacting anyone who might have that name in their own records (family lived in St. Agnes, then in Sidmouth, Sidford, and Bickewell Valley in Devon) and b) can anyone direct me to a historical description of the Forest of Dean and finally c) this may be a really "not smart" query, but is the Forest of Dean the same as the Illogan Forest?

Thanks all.