Morpeth Herald 08/10/1915 carries a brief obituary:
On Wednesday Mr and Mrs William Armstrong, of 4 Terrace Road, South Cramlington, received the sad information that their son, Sergt. Robt. Armstrong, of the 19th [sic] Yorks had died from wounds received in France on Sunday, Sept 26th. He was 24 years of age, and prior to joining the Colours he worked as a miner at the Cramlington Ann Pit.
He is mistakenly remembered at Cramlington as serving in the West Yorkshire Regiment on C60.03
