
| Regimental number | 8 |
| Place of birth | Armidale, New South Wales |
| School | Armidale Superior Public School, New South Wales |
| Religion | Roman Catholic |
| Occupation | Engineer |
| Address | Armidale, New South Wales |
| Marital status | Single |
| Age at embarkation | 35 |
| Next of kin | Father, M Mahony, Armidale, New South Wales |
| Previous military service | Served in Naval and Military Force at Rabaul. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 5th Infantry Brigade Headquarters |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A34 Themistocles on |
| Regimental number from Nominal Roll | 4186 |
| Rank from Nominal Roll | Warrant Officer (Class II) |
| Unit from Nominal Roll | 13th Field Artillery Brigade |
| Fate | Killed in Action |
| Age at death | 37 |
| Age at death from cemetery records | 37 |
| Place of burial | Vlamertinghe New Military Cemetery (Plot VIII, Row D, Grave No 5), Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 18 |
| Miscellaneous information from cemetery records | Parents: Michael and Henrietta MAHONY |
| Family/military connections | Brother: 72 Lance Corporal Eugene Patrick MAHONY, 2nd Bn, died of wounds, 20 May 1915; Cousin of Cpt C Mahony 17th Bn killed in action. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |