1841 census:
Class: HO107; Piece: 40; Book: 5; Folio: 3; Page: 1
Church End, Bledlow, Buckinghamshire
Gunn, James M 50 Ag Lab
Gunn, Mary F 50
Gunn, William M 7
Gunn, Sarah F 5
Gunn, Mary F 3 all born in county
However, There is this christening says:
6th July 1834 at Bledlow, Buckinghamshire
William Gunn, son of John & Hannah