John Mayne was the son of Eliza Mayne. He was born about 1871 in Cookstown. He served his time with Adairís Mills in Cookstown. He and Sara Jane Reilly were married in 1896 Cookstown. They went on to have seven children. John spent fourteen years at Stevensons of Moygashel, Dungannon. He then worked in Martinís in Rostrevor. Johnís wife and family returned to Cookstown after enlistment. Rifleman John Mayne was serving with the 13th Battalion of the Royal Irish Rifles when he was killed in action on the first day of the Battle of the Somme on Saturday 1st July 1916.
Thiepval is a village on the D151 road about 8 kilometres north of the town of Albert. The Cemetery (signposted at Thiepval) is about 1kilometre north-west of the village on the north side of the D73 road to Hamel. Access to the cemetery, 500 metres from the road, is by a track (suitable for cars).