Source: 18th Battalion Nominal Roll, April 1915.
Family Search: When William McMath Simpson was born on 2 September 1891, in Old Aberdeen, Aberdeen, Aberdeenshire, Scotland, United Kingdom, his father, James Simpson, was 29 and his mother, Margaret McMath, was 31. He had at least 1 son and 1 daughter with Alice M. Smith. He lived in Sarnia, Kent, Ontario, Canada in 1919 and Battle Creek, Calhoun, Michigan, United States for about 19 years. He registered for military service in 1914. In 1914, at the age of 23, his occupation is listed as machinist. He died on 21 September 1974, in Detroit, Wayne, Michigan, United States, at the age of 83, and was buried in Floral Lawn Memorial Gardens, Battle Creek, Calhoun, Michigan, United States.
William McMath Simpson – Born 2nd Feb 1891, Aberdeen. Immigrated to Michigan in 1923. Enlisted with the Canadian Armed Forces during WW1. Machinist. Died 21st Sep 1974.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 