Thomas Harris was the son of George and Nancy Harris (nee Allen). Thomas was born in Moneymore on 29th October 1889. The family lived in Carrydarragh, Moneymore. Thomas emigrated to Canada. He enlisted in Montreal on 10th August 1915. He gave his next of kin as his younger brother, Allen Harris, who was also living in Montreal. Thomas gave his occupation as ‘driver’. He was 25 years old. Private Thomas Harris was serving with A Company, in the 13th Battalion of the Canadian Infantry when he died in France and Flanders on 4th September 1916. He was 26 years old.
Longueval is a village 40 kilometres north-east of Amiens and 12 kilometres east-north-east of Albert, a town on the D929 road from Amiens to Bapaume and Cambrai. From the D929 direction Bapaume-Albert take the 2nd turning for Martinpuich and continue along the D6 direction Longueval, for 2 kilometres. London Cemetery and Extension will be found on the right hand side of the road.