There are a number of Wills for Godwin's at Gloucester Archives that you might want to check out e.g.

1772 Richard Godwin St Briavels Will ref 1772/111 Catalog Wills 1541-1800
1772 Mary Joanna Godwin St Briavels Will ref 1772/32 Catalog 1541-1899

Also a Francis Godwin (no year stated unfortunately) down as a non conformist child. Ref d5533/1/1.

www.gloucestershire.gov.uk/archives
Click on genealogy database.