I knew your family in Joburg - Your grandfather Maurice (Monty) and your grandmother Judy (I think) were close friends of my parents - My Dad worked with Troubadour records in Rhodesia. He and I often travelled to Joburg for medical treatment and we used to stay with Monty and Judy - I was a a kid at the time but have fond memories of them and of Jessica.
I would love to make contact with your family - I guess your grandparents have passed on - but I would hope to make contact with Jessica and perhaps your father. The Fagin family were very special people to us.
I live with my family in London - and can be contacted by email at firstname.lastname@example.org