And this could be him in 1851,
HO107 1522 folio 254 page 12
1, George Yard, St Luke's, Finsbury
William Moody, head, married, age 53, painter, born Twickenham
Mary, wife, age 51, born St Giles-in-the-fields
Jas, son, age 16, at home, born St Giles-in-the-fields
Sarah, daughter, age 13, born St Giles-in-the-fields
William, son, age 11, born St Giles-in-the-fields
Sarah Page, widow, age 32, born St John's Middlesex
Sarah Page, age 16, born St John's Middlesex
Jane Page, age 1, born St John's Middlesex
The ages of the two brother Jas (James) and William tally with those on the 1861 census, and William the father is shown as a painter, so a fairly good match.