Hi
Sorry for my late response, I had to go out and returned to find some great info, Thanks to all, especially Ciderdrinker for all the Baptism finds, that is a terrific help.
Re the 1891Census George Bird was 20 (born abt 1871) and Mary Prior was 23 (born abt 1868) They were servants at Sandhurst Berks, I found the Sandhurst birth for George and this indicates it's likely to be him.
I found Mary A. Prior, born Hampshire. in 1871 she was living at Cliddesden with her family, this is about 3 miles from Basingstoke Hampshire, so very likely correct. father: James Prior, mother: Sarah Prior.
I don't have marriage cert, I also don't know where William Nobbs was between 1901 and 1911 though in 1901 census, he was listed with some of his legitimate children at 227 Park Rd, East Molesey
I hope this is useful and am very grateful for your help.
Regards
Howard