Cyril P. Callister Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. The son of a teacher and postmaster, and one of seven children, he attended the Ballarat School of Mines and later won a scholarship to the University of Melbourne. He gained a Bachelor of Science degree in 1914 and a Master of Science degree in 1917. In early 1915, Callister was employed by food manufacturer Lewis & Whitty, but later that year he enlisted in the Australian Imperial Force. After 53 days, however, he
Cyril Hamilton Cyril Hamilton Major Cyril Penn Hamilton (12 August 1909 – 10 February 1941) was an Australian born English soldier and sportsman. He played racquets, squash, hockey and first-class cricket and rose to the rank of Major in the Royal Artillery. Hamilton was born in Australia in 1909 and died near Keren in Eritrea at the age of 31 in 1941 whilst on active service during World War II. Hamilton was born at Adelaide in South Australia in 1909. He was educated at Wellington College in England between 1922 and 1927 where he played cricket in the school First XI and