| Regimental number | 1885 |
| Place of birth | Petersburg, South Australia |
| Religion | Roman Catholic |
| Occupation | Butcher |
| Address | Broken Hill, New South Wales |
| Marital status | Single |
| Age at embarkation | 22.5 |
| Height | 5' 5.5" |
| Weight | 124 lbs |
| Next of kin | Father, Thomas Joseph O'Neill, Terowie, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 43rd Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/60/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 43rd Battalion |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | *Spelt Thomas Matthew O'Neill on NR |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Nestor', 20 May 1919; discharged (termination of period of enlistment), Adelaide, 14 May 1919. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, O'NEILL Thomas Mathew |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
