| Regimental number | 5687 |
| Place of birth | Toowoomba, Queensland |
| School | Mudgee College, Queensland |
| Religion | Roman Catholic |
| Occupation | Milling engineer |
| Address | Toowoomba, Queensland |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs Ellen O'Brien, 'Miltown', Neil Street, Toowoomba, Queensland |
| Previous military service | Possibly served in the Light Horse. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 25th Battalion, 15th Reinforcement |
| AWM Embarkation Roll number | 23/42/4 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A46 Clan Macgillivray on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Vaulx-Vraucourt, France |
| Age at death | 20.9 |
| Place of burial | Vaulx Australian Field Ambulance (Row B, Grave No. 16), France |
| Panel number, Roll of Honour, Australian War Memorial | 105 |
| Miscellaneous information from cemetery records | Parents: Patrick and Ellen O'BRIEN, Neil Street, Toowoomba, Queensland |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
