Dear SKS, I don't know if Sydney has a 1931 - 1941 Census, if we do could SKS please have a look for the Thornton's below. 1. Cyrus Joseph Thornton residence Surry Hills Died 29/04/1949 Will probated. Born Vic 2. Robert Thomas Bickley Thornton Born Vic, Died ? Parents Thomas Thornton of Tasmania-Victoria Joenia Blanche Bickley-Thornton of Victoria. Thank you and best wishes Amanda