| Religion | Roman Catholic |
| Occupation | Engineer's draughtsman |
| Address | Dulwich Hill, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, Patrick McMahon, 'Malvern', Pile Street, Dulwich Hill, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Lieutenant |
| Unit name | 2nd Field Company Engineers, Reinforcement 17 |
| AWM Embarkation Roll number | 14/21/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | 2nd Lieutenant |
| Unit from Nominal Roll | 1st Division Engineers |
| Fate | Died of wounds |
| Place of burial | Morchies Australian Cemetery (Row B, Grave No. II), France |
| Panel number, Roll of Honour, Australian War Memorial | 24 |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
