| Regimental number | 3176 |
| Place of birth | Kerang Vic |
| Religion | Roman Catholic |
| Occupation | Dairyman |
| Address | Bena, Victoria |
| Marital status | Single |
| Age at embarkation | 35 |
| Next of kin | Father, Hugh Hennessy, Bena, Victoria |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 4th Light Horse Regiment, 25th Reinforcement |
| AWM Embarkation Roll number | 10/9/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board RMS Omrah on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 13th Light Horse Regiment |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Listed on Coomoora State School No 836 Roll of Honor, Victoria. |
| Family/military connections | Brother: 3165 Gunner James HENNESSY, 12th Field Artillery Brigade, returned to Australia, 8 May 1919. |
| Other details | Medals: British War Medal, Victory Medal |