Hi
Looking at the original image of the 1851 Census, this could well be your John as the William he is living with is actually his son. The index has given an incorrect relationship between John and William, on the page it says Father not Brother....
1851 Census England Surrey Epsom
HO107/1592/411/22
Church Street
RATCLIFFE
William Head Marr 33 Agricultural Labourer Surrey Epsom
Sarah Wife Marr 37 Middlesex Hammersmith
William Son Unmarr 9 Scholar Surrey Epsom
James Son Unmarr 7 Scholar Surrey Epsom
John Son Unmarr 5 Scholar Surrey Epsom
Frederick Son Unmarr 2 Scholar Surrey Epsom
Eliza Dau Unmarr 11 Scholar Middlesex Hammersmith
John Father Wid 59 Agricultural Labourer Surrey Epsom
Cheers
Karenlee
PS Hey Patrish
