| Regimental number | 1933 |
| Date of birth | |
| Place of birth | Tia, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Temora, New South Wales |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Father, Michael Lahey, Moona Road, Walcha, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 56th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/73/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A37 Barambah on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | Australian Army Medical Corps Details |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 51212 Sergeant Walter Aherns LAHEY, 2nd Battalion, returned to Australia, 6 July 1919; 3087 Corporal Henry James LAHEY, 48th Battalion, killed in action, 11 April 1917, Western Front. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |