Could this be him?
1861 census ref: RG9/1731 Folio 83
Isaac Grindell Head 40 b St George, Gloucestershire Haulier
Sarah Grindell Wife 38 b St George, Gloucestershire
William Grindell Son 18 b St George, Gloucestershire
Alfred Grindell Son 12 b St George, Gloucestershire
Pyle Marsh, Bristol St George, Gloucestershire
Reg Dist: Clifton