Morpeth Herald 03/11/1916 carries a brief obituary:
Mrs Hart, 41 Garden Terrace, Earsdon, has received word that her husband, Pte. John Hart, was killed by a trench mortar on October 10th. Prior to joining the Army [the] deceased worked at Church Pit, Backworth.
He is remembered at Earsdon on E3.01 E3.02 and E3.03 and in B1.03Roll of Honour Backworth and District, a printed book.