John Connor Knox was the only son of Charles and Mary Knox. He was born in Dungannon on 20th March 1899. He was the youngest of three children. His father died when he was two. He was educated at Brookfield School and Bangor Grammar School. He enlisted in the Royal Irish Rifles in 1915, but was only 15. Shortly afterwards enlisted to train as a wireless operatos.On completion of his course he was posted to the Royal Engineers. In January 1917 he went out to the Western front. Arising primarily out of shell shock, he contracted an illness and was moved to London General Hospital. Sapper John Connor Knox was serving with the Royal Engineers when he died on 16th November 1917, aged 18.
Drumcoo Cemetery is in Dungannon next to the Coalisland Road roundabout. There are three Commonwealth burials of the 1914-1918 war. There are also three casualties of the 1939-1945 war. There is a also a memorial to George Knox McKinley.