Source: 18th Battalion Nominal Roll, April 1915.
Find-A-Grave
Family Search: When Private Charles Arthur Looker was born on 29 July 1882, in Reading, Berkshire, England, United Kingdom, his father, Charles Arthur Looker, was 59 and his mother, Mary Jane Wood, was 39. He immigrated to Baltimore, Maryland, United States in 1912 and lived in Kitchener, Waterloo, Ontario, Canada in 1921. He registered for military service in 1899. In 1914, at the age of 32, his occupation is listed as labourer.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 