| Regimental number | 56011 |
| Occupation | Driver |
| Next of kin | Father, J O'Brien, Redwood Town, Blenheim |
| Rank on embarkation | Rifleman |
| Unit name | New Zealand Expeditionary Force, New Zealand Rifle Brigade Reinforcements (Second Draft), G Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT 90 Ulimaroa on |
| Final rank | Rifleman |
| Final unit | 3rd Battalion, New Zealand Rifle Brigade |
| Fate | Killed in Action |
| Place of burial | Achiet-Le-Grand Communal Cemetery Extension (Plot III, Row C, Grave No 30), France |
| Miscellaneous information from cemetery records | Wife: Elizabeth T. O'Brien, Lyttelton |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 3: Roll 69, p. 32 |