| Regimental number | 2237 |
| Place of birth | Wagga Wagga, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Wagga Wagga, New South Wales |
| Marital status | Single |
| Age at embarkation | 41.8 |
| Height | 5' 6.5" |
| Weight | 133 lbs |
| Next of kin | Father, Michael O'Donnell, c/o W Mason, 'Isabella', Darley Road, New South Wales |
| Previous military service | Served from 1900 to 1907 in 3rd NSW Mounted Rifles. |
| Enlistment date | |
| Place of enlistment | Cootamundra, New South Wales |
| Rank on enlistment | Private |
| Unit name | 56th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/73/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A15 Port Sydney on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 56th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Son of Michael O'DONNELL. Photo: Robert and Sandra Crofts |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Marathon', 15 April 1918; discharged (medically unfit: gas poisoning and bronchitis), 17 October 1918. Medals: British War Medal, Victory Medal Death attributed to War Service. |
| Date of death | |
| Age at death | 61 |
| Place of burial | Rookwood Necropolis (Sec. R.C. 8, 2702), Sydney, New South Wales |
| Sources | NAA: B2455, O'DONNELL Michael Thomas |
