Source: October 1916 casualty.
Family Search: Private Robert Tucker was born on 23 April 1878, in London, England, United Kingdom as the son of tucker. He had at least 4 daughters with Margaret Annie Marsh. He immigrated to Canada in 1906 and lived in York, Ontario, Canada in 1911 and Toronto, York, Ontario, Canada in 1915. He registered for military service in 1915. In 1915, at the age of 37, his occupation is listed as labourer in Toronto, York, Ontario, Canada. He died on 3 October 1916, in Courcelette, Somme, France, at the age of 38, and was buried in Vimy, Pas-de-Calais, France.
For Evermore: Stories of The Fallen
History of the 18th Battalion CEF, "The Fighting Eighteenth" 