| Regimental number | 22802 |
| Place of birth | Kempsey New South Wales |
| Religion | Roman Catholic |
| Occupation | Tramdriver |
| Address | Tramway, North Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 34 |
| Next of kin | Father, T Gannon, Bowra Ville, Nambucca River, New South Wales |
| Enlistment date | |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade 7, Reinforcement 1 |
| AWM Embarkation Roll number | 13/35/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A8 Argyllshire on |
| Rank from Nominal Roll | Bombardier |
| Unit from Nominal Roll | 7th Field Artillery Brigade |
| Fate | Returned to Australia |
| Family/military connections | Sister: Staff Nurse Josephine Margaret GSNNON, Australian Army Nursing Service, returned to Australia, 23 July 1919; Brother: 5576 Pte Mathew Edward GANNON, 53rd Bn, returned to Australia, 15 January 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |