| Regimental number | 1960 |
| Place of birth | Sale Victoria |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Woodside, Victoria |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Mother, Mrs W Kerr, Woodside, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| 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 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 24th Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 23 |
| Place of burial | Ration Farm Military Cemetery (Plot I, Row I, grave No. 3), La Chapelle D'Armentieres, France |
| Panel number, Roll of Honour, Australian War Memorial | 102 |
| Miscellaneous information from cemetery records | Parents: James and Mary O'NEILL, Woodside, Victoria. Native of Darriman, Victoria |
| Family/military connections | Brothers: 2062 Pte Joseph Geoffrey O'NEILL, 24th Bn, returned to Australia, 8 April 1919; 1958 Pte Simon John O'NEILL, 5th Motor Transport Company, returned to Australia, 2 March 1919. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |