Geoffrey Dennis Jump is Sidney Borland Jump's son. My Grandafather Geoffrey never met his Dad as he died just prior to his birth. Marion Anna Jump nee Davy went back to england to have ny Grandafather in May 1910. Marion Anna Jump remarried some years later. I have been trying to trace my great grndfather for sometime. please get in touch , i have just spoken to my mum and she says it is you.