| Regimental number | 2053 |
| Place of birth | Oberon, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | c/o Mrs L Hornmann, 83 Miller Street, North Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, A E O'Brien, address unknown |
| Enlistment date | 31 March 1915 |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Private |
| Unit name | 13th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/30/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A55 Kyarra on 13 April 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 13th Battalion |
| Fate | Returned to Australia 20 August 1915 |