| Regimental number | 740 |
| Place of birth | Clare, Ireland |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Royal Hotel, Narromine, New South Wales |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Cousin, Francis McMahon, Wellington, New Zealand |
| Enlistment date | 9 December 1914 |
| Place of enlistment | Holsworthy, New South Wales |
| Rank on enlistment | Private |
| Unit name | 7th Light Horse Regiment, 2nd Reinforcement |
| AWM Embarkation Roll number | 10/12/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A12 Saldanha on 5 February 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 7th Light Horse Regiment |
| Fate | Returned to Australia 28 June 1919 |
| Sources | NAA: B2455, McMAHON William Joseph |
