1891 UK census shows the following family which looks as though it is the chap found by Sparrett - whether it's the on Valgenie is looking for is not quite clear yet!
At 116 Winston Rd, Stoke Newington - all born Poplar except Julia b Bromley, and Ernest b Highbury
Charles H Johnson 54, shipwright
Harriett Johnson 37
Julia A Johnson 12
Charles H Johnson 5
Ernest E Johnson 1
Cheers, Judith