The NSW online Death Index has the father named John. Parents named on death certificates not always correct. 15308/1936HALLWILLIAM at PETERSHAM parentsJOHN &ELIZABETH
Funeral notice also in TROVE. The Sydney Morning Herald (NSW : 1842 – 1954) Monday 3 August 1936 HALL-The Relatives and Friends of Mrs. ADA HALL, and Mr. and Mrs. BERNARD HALL are invited to attend the Funeral of her dearly beloved HUSBAND, and their dear FATHER and FATHER IN-LAW, William; to leave his late residence, 5 Margaret-street, Petersham. THIS AFTERNOON, at 1.4S o'clock, for the Church of England Cemetery, Rookwood.