The Commonwealth War Graves Commission has 11 recorded WW1 deaths for the 23rd (Entrnching) Battalion, Royal Irish Rifles.
HADDOCK, Joseph Henry. Second Lieutenant. 23rd (Entrenching) Battalion, Late Of :- 14th (Service) Battalion. (Young Citizens), Royal Irish Rifles. Ham British Cemetery, Muille-Villette, Somme, France. 240-03-1918. Age 28. Husband of May Haddock of Beach Avenue, Leigh-on-Sea, Essex, UK.