Soldiers Died in the Great War states that he was born in Pegswood and enlisted in Newburn.
Morpeth Herald 04/06/1915 carries a brief obituary:
Pte. J.L. Gibson, 25 Millfield Lane, Newburn, was killed on April 26th. Private Gibson was a deputy-overman at Blucher Pit, Walbottle, and held two mining certificates. When he left home he left a wife and four children, but one of these has died since.
John Leadbitter Gibson is remembered at Newburn on N13.01 and N13.02
