John Coyle was born in Castelderg, County Tyrone, and lived and worked in Cookstown. He was in Glasgow, Scotland, before he enlisted in the Cameronians. He was killed in action during the Battle of Loos. He has no known grave and is commemorated on the Loos Memorial France, panel 57-59
Loos-en-Gohelle is a village 5 kilometres north-west of Lens, and Dud Corner Cemetery is located about 1 kilometre west of the village, to the north-east of the N943, the main Lens to Bethune road.