| Regimental number | 4489 |
| Religion | Roman Catholic |
| Occupation | Chairmaker |
| Address | Colville Street, West End, Brisbane, Queensland |
| Marital status | Single |
| Age at embarkation | 30 |
| Next of kin | Mother, Mrs Ellen O'Brien, Colville Street, West End, Brisbane, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/43/3 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A16 Star Of Victoria on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 26th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Stated to be Colville O'Brien on NR |
| Place of burial | Villers-Bretonneux Military Cemtery (Plot III, Row C, Grave No. 4), Fouilloy, France |
| Panel number, Roll of Honour, Australian War Memorial | 108 |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |