Wow I didn't quite expect such a full reply!
Our Digby family comes from John Digby and Caroline Williamson who married 1855 in Briston, Norfolk. John's father was Samuel. Clara bpt 1876, also Briston. Clara moved to Aylsham Rd. Hellesdon ,with her widowed mother later on and settled in Norwich. It doesn't look as though there is a link to your family I'm afraid, not this branch anyway. Your family is much further west.
If I turn anything up I will let you know.