Father's biological Father

Beatrix Dorothea Bosman was living at the Mary Rolt Hostel in Mowbray, Cape Town, South Africa prior to giving birth to her son, Ian Neville Bosman. She gave birth on 8 March 1934 at the Booth Memorial Hospital in Cape Town. She herself was born on 18 June 1911 in Ceres, Cape Town. She worked at the Valkenberg Hospital later on, situated in Observatory, Cape Town. I'm trying to find any information regarding her or my Father from any of these institutes or anywhere else, also with the aim of locating Ian Neville Bosman's biological Father.