| Regimental number | 891 |
| Religion | Roman Catholic |
| Occupation | Baker |
| Address | Bundaberg, Queensland |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Father, James O'Reilly, Goodwood, Queensland |
| Enlistment date | 30 October 1915 |
| Rank on enlistment | Private |
| Unit name | 42nd Battalion, D Company |
| AWM Embarkation Roll number | 23/59/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A30 Borda on 5 June 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 42nd Battalion |
| Fate | Returned to Australia 31 July 1918 |
