Source: Service record of Harold Stanley Gardiner re. promotion as Ray was invalided to England.
Find-A-Grave
Family Search: When Sergeant Robert Ray was born on 14 May 1870, in Wiltshire, England, United Kingdom, his father, Thomas Ray, was 29 and his mother, Mary Anna Elizabeth, was 29. He immigrated to Canada in 1913 and lived in Salisbury St Martin, Wiltshire, England, United Kingdom in 1871. He registered for military service in 1914. In 1914, at the age of 44, his occupation is listed as cook. He died in England, United Kingdom.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 