He was the son of Edward and Isabella Milburn, of Cramlington, and the husband of Margaret Helena Milburn, of 32 Sea View Villas, Newtown, Cramlington.
Morpeth Herald 21/09/1917 carries a brief obituary:
Mrs Milburn, of Storey Street, Cramlington, has been notified that her husband, Sergt. John Milburn, has been killed by a sniper.