| Regimental number | 29763 |
| Place of birth | Footscray Victoria |
| Religion | Roman Catholic |
| Occupation | Plumber |
| Address | 94 Bayswater Road, Kensington, Victoria |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, J O'Mahoney, 94 Bayswater Road, Kensington, Victoria |
| Enlistment date | |
| Rank on enlistment | Gunner |
| Unit name | Howitzer Brigade 119 |
| AWM Embarkation Roll number | 13/136/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 4th Division Ammunition Column |
| Fate | Returned to Australia |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |