| Regimental number | 1958 |
| Place of birth | Sale Victoria |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Woodside, Victoria |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Mother, Mrs W Kerr, Woodside, Victoria |
| Enlistment date | 18 June 1915 |
| Rank on enlistment | Private |
| Unit name | 24th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/41/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A68 Anchises on 26 August 1915 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 5th Motor Transport Company |
| Fate | Returned to Australia 2 March 1919 |
| Family/military connections | Brothers: 2062 Pte Joseph Geoffrey O'NEILL, 24th Bn, returned to Australia, 8 April 12919; 1960 Pte Maurice Edward O'NEILL, 24th Bn, killed in action, 30 June 1916. |