| Regimental number | 5012 |
| Religion | Roman Catholic |
| Occupation | Electrician |
| Address | Canterbury Road, Unanderra, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, William James O'Brien, Canterbury Road, Unanderra, New South Wales |
| Enlistment date | 21 October 1915 |
| Rank on enlistment | Sapper |
| Unit name | 1st Field Company Engineers, Reinforcement 13 |
| AWM Embarkation Roll number | 14/20/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A35 Berrima on 17 December 1915 |
| Miscellaneous details (Nominal Roll) | Name does not appear on Nominal Roll |
