3xg grandad brick wall!

[Hann85]

Hi I'm looking for some help in finding out the place of birth and parents of Jacob prime 1884-1899.
He gets married in 1970 to Elizabeth Bailey
He is on the 1871 census as chas j prime with his wife Elizabeth prime
1881 miss index as Jacob Prince with his wife Elizabeth plus children
1891 census as Jacob prime with wife Elizabeth plus children.
All give his birth place as USA/America father's name John. The areas he lived in were bethnal green. He dies on 1899
I'm looking for any information before 1970 can anyone help me!
Kind regards
Han