| Regimental number | 4344 |
| Place of birth | Graman, New South Wales |
| School | Graman Public School, New South Wales |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Graman, via Inverell, New South Wales |
| Marital status | Single |
| Age at embarkation | 26 |
| Next of kin | Mother, Mrs Margaret O'Brien, Graman, via Inverell, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 29th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/46/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A19 Afric on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 29th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Navroy, France |
| Age at death | 28 |
| Age at death from cemetery records | 23 |
| Place of burial | Bellicourt British Cemetery (Plot II, Row E, Grave No. 3), France |
| Panel number, Roll of Honour, Australian War Memorial | 116 |
| Miscellaneous information from cemetery records | Parents: John and Margaret O'BRIEN, Graman, New South Wales |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |