George Hostrawser was born in Malton, Ontario on 8 July 1897, the son of William Hostrawser, a farmer in Toronto Gore Township and his wife Jane Cameron.
George enlisted at Brampton on 18 December 1915 in the 126th Overseas Battalion of the Canadian Expeditionary Force. He was described on his attestation form as being 5 feet 7½ inches in height, with fair complexion, grey eyes and fair hair. His regimental number was 775495.
At some point George was transferred to the 116th Battalion (Ontario County). This battalion fought in France at the Somme (1916), Arras (1917) and Vimy (1917). He was promoted to sergeant. George was killed in action near Passchendaele on 31 October 1917 and is buried in Oxford Road Cemetery, one-and-a-half miles northeast of Ieper, West-Vlaanderen, Belgium.