FindMypast has the parish marriage (transcripts only) of -
James Bull and Mary Johnson, 24 Mar 1834 at St Mary's and St Benedict's Church, Huntingdon.
There's a GRO birth reg of a -
James Bull, Sep Qtr 1838, Huntingdon, 14 62, mother's maiden name Johnson
and a baptism (transcript only) of -
James Bull, 4 Nov 1838, abode Huntingdon, parents James and Mary
Could this be the 2yr old James Bull on the '41 census with James 30, Mary 30, George 5 living at Yard Near, St Benedict, Huntingdon?