I am Dennis Frankel and now living in Melbourne, Australia (from Johannesburg, South Africa). My father was Bertholdt (born 1914), My mother, Erna Frankel (nee Britz). My father's parents were Anna and Izaak (or Isaac) and he had a sister, Rosa.
On my mother's side, she had 2 brothers (Louise and Henry [Heinz}) both of whom settled in the US, Pennsylvania. Louis Britz was a Freemason. She also has a sister (believe still living), Betty, in Israel. Last I heard, in Kibbutz Hazorea (or similar).
I have one son, Baron Israel, born 1963 in Johannesburg, SOuth Africa, and one grandson, Jeremy Simon (born in Melbourne 1998).