| Regimental number | 20839 |
| Place of birth | Melbourne Victoria |
| Religion | Church of England |
| Occupation | Station hand |
| Address | Warra, Queensland |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, J McMahon, 'Clyde Bank', Warra, via Toowoomba, Queensland |
| Enlistment date | 10 December 1915 |
| Rank on enlistment | Gunner |
| Unit name | 9th Field Artillery Brigade, 33rd Battery |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A8 Argyllshire on 11 May 1916 |
| Rank from Nominal Roll | Bombardier |
| Unit from Nominal Roll | 12th Field Artillery Brigade |
| Fate | Returned to Australia 9 February 1919 |
| Date of death | 7 April 1972 |
| Place of burial | Mt Gravatt Cemetery |
