It is really odd - 1871 census Hayes, marries in 1873 as Biggs, 1881 Biggs, 1891 Hayes, 1901 Hayes, in 1911 Sarah is a widow - the form says Biggs but the cover page says Mrs Hayes!!hi kc it could have been that johns father died and his mother re married and so his name went down as that of his stepfathers in this case biggs..i have seen this happen a few times including my own family..
lyn