Hi Gary, Robert Jacob was my great Grandfather. on my my Mother's side. I have not come across anything on his parenta, so for me the line kind of stops with him. We are descended from their last child Grace. The very little I know about him, was that he worked at the Sammy Marks distillery in Pretoria, South Africa. His wife, Granny Polly, was a legend in the town of Benoni, east of Johannesburg.
Regards
Ian Fenton