| Regimental number | 1888 |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Adelaide Club, King Street, Melbourne, Victoria |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Father, Cornelius O'Neill, 30 Menai Street, Liverpool, England |
| Enlistment date | 17 January 1916 |
| Date of enlistment from Nominal Roll | 27 May 1916 |
| Rank on enlistment | Private |
| Unit name | 37th Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/54/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board RMS Orontes on 16 August 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 39th Battalion |
| Fate | Returned to Australia 27 May 1919 |