
| Regimental number | 2681 |
| Religion | Roman Catholic |
| Occupation | Draftsman |
| Address | 220 Bridge Road, Glebe, Sydney. New South Wales. |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Brother, James O'Brien, 'Woodlands,' Bridge Road, Glebe, Sydney, New South Wales. |
| Enlistment date | |
| Rank on enlistment | Driver |
| Unit name | 7th Field Company Engineers |
| AWM Embarkation Roll number | 14/26/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A23 Suffolk on |
| Miscellaneous information from cemetery records | Plaque in New South Wales Garden of Remembrance |
| Date of death |