Source: The Regimental Rouge
Commemorated at the Clogher War Memorial.
Family Search: When Corporal John Robert McCombe was born on 4 February 1879, in Clogher, County Tyrone, Ireland, his father, Robert McComb, was 49 and his mother, Jane Margaret Cooke, was 35. He immigrated to Canada in 1903 and lived in London, Ontario, Canada in 1914. He registered for military service in 1914. In 1914, at the age of 35, his occupation is listed as clerk, scandrett brothers store in London, Ontario, Canada. He died on 15 September 1916, in Courcelette, Somme, Picardie, France, at the age of 37, and was buried in Vimy, Pas-de-Calais, Nord-Pas-de-Calais, France.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 
His CEF records he was buried by the 15th Canadian Battalion.
Kara, I sent a correction to the Commonwealth War Grave Commision and they have corrected their entry. I am adding a link to that page. If you have any inforamtion pertaining to this soldier and wish to share it please reach out to me.
JR McCombe’s name is mentioned in Jacob Levern Brown’s CEF records.