Soldiers Died in the Great War states that he was born in Nettlesworth, enlisted in Durham and resided in Kimblesworth.
The Chester-le-Street Chronicle 25/01/1918 reports:-
Respected by All
Mrs Jos. Harker, of Pity Me, has received official intimation of the death of her husband Corpl. Joseph Harker, who was killed in action June 7th 1917. Prior to enlisting Corpl. Harker worked as a coal hewer at Kimblesworth Colliery. He was the youngest son of William and the late Elizabeth Harker of Cross Street, Nettlesworth. Of a quiet disposition he was respected by all with whom he came in contact. He leaves a widow and one child for whom much sympathy is felt.
The Chester-le-Street Chronicle08/02/1918 reports:-
Memorial Service at Nettlesworth
A very impressive service was held in the United Methodist Church, Nettlesworth in Memory of Corporal Joseph Harker and Pte. Wm. Clark who have been killed in action on the West Front.
Corporal Harker reported missing since June 7th 1917 is now reported killed in action and leaves a widow and one child. Private Clark was killed in action Sept. 20th 1917 after having been wounded on two separate occasions, and he leaves a widow and three children. Both men having been born and reared in the village, naturally the church was filled with a sympathetic congregation.
The Rev. A.E. Banks (who has spent some months in France as an Army Chaplain) was the preacher.....Great sympathy is felt for those who are left to mourn the loss of these brave lads.
Joseph Harker is remembered in Kimblesworth on K24.02 and K24.03
