| Regimental number | 11922 |
| Place of birth | Australia |
| Occupation | Stableman |
| Next of kin | Brother, M O'Brien, Duckmaloi, Oberon, New South Wales, Australia |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 12th Reinforcements (1st Draft), Wellington Infantry Battalion, B Company |
| Embarkation details | Unit embarked from Wellington on board HMNZT 51 Ulimaroa on |
| Sources | Nominal Roll Vol. 2: Roll 30, p. 7 |