Source: SS Caronia Passenger Manifest. 1919.
Family Search: When Private Frederick Oscar Johnson was born on 1 September 1893, in Wingham, Huron, Ontario, Canada, his father, Fredrick William Johnston, was 31 and his mother, Hannah M. Wocks, was 21. He married Louisa Cords on 11 September 1925, in Toronto, Ontario, Canada. They were the parents of at least 1 son. He lived in Huron, Ontario, Canada for about 10 years and Toronto, York, Ontario, Canada in 1923. He registered for military service in 1918. In 1918, at the age of 25, his occupation is listed as druggist clerk in Wingham, Huron, Ontario, Canada. He died on 20 June 1979, at the age of 85, and was buried in Toronto, Ontario, Canada.
Private Frederick Oscar Johnson, reg. no. 3130249.
He reported for military service under the MSA (1917) at London, Ontario on 3 January 1918 under the name of George Howard James.
He was a druggist clerk living at Wingham, Ontario and was of the Anglican faith.
He arrived in England on 16 February 1918 aboard the SS Grampian and was transferred to the 4th Canadian Reserve Battalion the next day at Bramshott Camp. He was transferred for active combat duty on 10 May 1918 and arrived “in the field” on 11 June 1918.
Private Johnson served the rest of the war with the 18th Battalion and was demobilized at London, Ontario on 24 May 1919.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 