| Regimental number | 35228 |
| Date of birth | |
| Place of birth | Orroroo, South Australia |
| Religion | Roman Catholic |
| Occupation | Grocer's assistant |
| Address | Orroroo, South Australia |
| Marital status | Single |
| Age at embarkation | 20.2 |
| Height | 5' 4" |
| Weight | 132 lbs |
| Next of kin | Father, John Hennessy, Orroroo, South Australia |
| Previous military service | Served in the 23rd Australian Light Horse, Citizen Military Forces. |
| Enlistment date | |
| Place of enlistment | Orroroo, South Australia |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade, Reinforcement 27 |
| AWM Embarkation Roll number | 13/128/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A15 Port Sydney on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 1st Divisional Signal Company |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Egypt, Western Front Commenced return to Australia on board HT 'Ormonde', 16 June 1919; discharged, Adelaide, 23 August 1919. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 98 |
| Place of burial | Dimboola Cemetery, Victoria |
| Sources | NAA: B2455, HENNESSY Clement Vincent |