Hi Sueg

Albert Bullock born Blaisdon 19.2.1842 married Louisa Marfell born 6.4.1845 Ruardean on 8th September 1862, St John's Church, East Dean. I have the marriage certificate which shows his father as William Bullock Labourer. Whilst I am fully aware that the fact that a father is shown on a certificate does not necessarily mean that it is the right one **, what leads you to suspect that he was illegitimate ? Unfortunately, I only have a transcribed version of the 1851 Census for Gloucestershire which shows:

Longhope
124
BULLOCK Charlotte 35 Huntley
Albert 8 Blaisdon

No detail as to the relationship. No doubt Slowhands can put this right.

** I have the original birth certificate and a copy of a forged one, used by a Marfell to enter the USA. He was illegitimate, but the forged version shows "a" fathers name, which happened to be his grandfather.