He was the son of the late Edgar and Annie Hedley, of Killingworth.
Morpeth Herald18/05/1917 carries a brief obituary:
Lance-Corpl. R.D. [sic] Hedley, Killingworth, killed.
Robert William Hedley is remembered at Alnwick in A11.43 page 24 and at Killingworth on K9.01 and K9.03