| Regimental number | 6985 |
| Religion | Roman Catholic |
| Occupation | Butcher |
| Address | Bayswater Road, Kensington, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, John M O'Mahoney, Bayswater Road, Kensington, Victoria |
| Enlistment date | 23 September 1915 |
| Rank on enlistment | Driver |
| Unit name | Field Artillery Brigade 4, Ammunition Column |
| AWM Embarkation Roll number | 13/32/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A18 Wiltshire on 18 November 1915 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 4th Field Artillery Brigade |
| Fate | Returned to Australia 15 May 1919 |