My grandfather left my grandmother to go to I think South Africa or New Zeeland. His name was Philip Borghardt. He would have been born in the early 1900's. His son Johannes Jacobus (my father) was born in Amsterdam in 1934. He was raised by his stepfather Jan Frederik Winter. I am trying to find out what happened to him and if there are any relatives left. I live in North Carolina USA. Please email if you have any answers. They lived in Amsterdam. His wife's name (my grandmother) was Nicolasina Snijders.