Morpeth Herald 05/10/1917 carries a brief obituary:
ROLL OF HONOUR
TYRELL [sic]- Killed in action, August 22nd, 1917, Lance-CorporalThomas Mowat Tyrrell, Seaforth Highlanders, youngest and dearly beloved son of Thomas and Elizabeth Tyrrell, 28 Fifth Row, Ashington.
Thomas Mowat Tyrrell, also spelled Tyrell, is remembered in Ashington on A17.01 (A17.27), A17.06, A17.08, A17.17 and A17.43