| Place of birth | Parramatta New South Wales |
| Religion | Roman Catholic |
| Occupation | Commercial traveller |
| Address | Granville, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, James Joseph McDonnell, Carrington Avenue, Granville, New South Wales |
| Previous military service | 20th Infantry |
| Enlistment date | 1 February 1916 |
| Rank on enlistment | 2nd Lieutenant (Honorary Lieutenant) |
| Unit name | 56th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/73/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A37 Barambah on 23 June 1916 |
| Rank from Nominal Roll | 2nd Lieutenant |
| Unit from Nominal Roll | 56th Battalion |
| Fate | Returned to Australia 8 January 1919 |
