| Regimental number | 1809 |
| Religion | Roman Catholic |
| Occupation | Locomotive-driver |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Brother, John O'Leary, 72 Rock Street, Tralee, County Kerry, Ireland |
| Enlistment date | 25 May 1915 |
| Rank on enlistment | Private |
| Unit name | 25th Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/42/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A9 Shropshire on 20 August 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Returned to Australia 17 March 1917 |
