You didn't mention Jacob's parents or the 1851 Census ....
1851 St George in the East (St Mary) Middlesex
HO107/1547 folio 76 page 26
167 Ratcliff Highway
John Kisler, head, 74, beer shop keeper, Germany
Elizabeth do., wife, 50, Germany
Frederick Dittmar, son in law, 28, sugar refiner, Germany
Elizth do., (dittmars) wife, 21, Germany
Jacob Kisler, son, 16, dock foreman, Germany
Catherine Dittmar, daur, 1, St Georges East Middx
Louisa Col*th, visiter, un, 28, servant, Germany
George Hielderland, visitor, un, 32, shoe maker, Germany
Hearman Sadler, visitor, un, 25, black smith, England