Source: Per post at 18th Battalion Facebook Group regarding his medals.
Find-A-Grave
Family Search: Private Henry John Waudby was born on 11 July 1893, in London, England, United Kingdom as the son of Joseph E. Waudby and Elizabeth Sophia Waudby. He immigrated to London, England, United Kingdom in 1921. He registered for military service in 1915. In 1915, at the age of 22, his occupation is listed as labourer. He died on 29 November 1922, in London, England, United Kingdom, at the age of 29.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 