| Regimental number | 4581 |
| Place of birth | Griffisaha Canada |
| Religion | Roman Catholic |
| Occupation | Driver |
| Address | Royal Albert Hotel, Commonwealth Street, Surry Hills, New South Wales |
| Marital status | Single |
| Age at embarkation | 44 |
| Next of kin | Brother, Patrick McMahon, Sioux Falls, South Dakota, USA |
| Enlistment date | 29 March 1916 |
| Date of enlistment from Nominal Roll | 15 July 1916 |
| Rank on enlistment | Private |
| Unit name | 30th Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/47/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A72 Beltana on 25 November 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 30th Battalion |
| Fate | Returned to Australia 4 May 1917 |
