1st Battalion, Prince of Wales's Leinster Regiment, (Royal Canadians).
Regular Army Battalion.
The Commonwealth War Graves Commission has 401 recorded WW1 deaths for the 1st Battalion, Prince of Wales's Leinster Regiment, (Royal Canadians).
O'BRIEN, Philip Anderson. Second Lieutenant. 1st Battalion, Attached To :- 2nd Battalion, Prince of Wales's Leinster Regiment, (Royal Canadians). Boulogne Eastern Cemetery, Pas-de-Calais, France. Died of wounds Received while supervising his men erecting breastworks near Armentieres. Tuesday 09-03-1915. Age 23. Son of J. O'Brien of Springfield Road, Bangor, County Down, Ireland. Born 15-08-1891 in India.