| Regimental number | 10/3687 |
| Place of birth | Australia |
| Occupation | Motor mechanic |
| Next of kin | Brother, J O'Brien, c/o Ganning, Taumarunui |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 9th Reinforcements, Wellington Infantry Battalion, B Company |
| Embarkation details | Unit embarked from Wellington on board SS Maunganui on |
| Sources | Nominal Roll Vol. 2: Roll 21, p. 21 |