Source: October 1915 Medical Officer’s War Diary. Accidentally shot self on October 1, 1915. War Diary has name spelled at Rushmere.
Find-A-Grave
Family Search: When George William Rushmer was born on 26 July 1895, in Norwich, Norfolk, England, United Kingdom, his father, Benjamin John Rushmer, was 27 and his mother, Charlotte Mills, was 25. He married Florence Mabel Harrison on 6 December 1921, in Cheetham Hill, Lancashire, England, United Kingdom. They were the parents of at least 1 son. He immigrated to Canada in 1914 and lived in Manchester, Greater Manchester, England, United Kingdom in 1921 and Manchester, Lancashire, England, United Kingdom in 1939. He registered for military service in 1915. In 1914, at the age of 19, his occupation is listed as blacksmith. He died on 21 November 1967, in Manchester, Lancashire, England, at the age of 72.
“George married Florence Mabel HARRISON on 26 Dec 1921 in St. Marks’ Church, Cheetham Hill, Manchester, Lancashire. (Florence Mabel HARRISON was born on 26 Mar 1897 in Kettlestone, Norfolk and died on 21 Mar 1968.)” This soldier dies November 21, 1967 per image below.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 
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