| Regimental number | 1812 |
| Religion | Roman Catholic |
| Occupation | Station hand |
| Address | Lorn, West Maitland, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, James O'Neill, Lorn, West Maitland, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 30th Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/47/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A35 Berrima on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 13th Battalion |
| Fate | Died of wounds |
| Age at death from cemetery records | 21 |
| Place of burial | Heilly Station Cemetery (Plot V, Row F, Grave No. 29), Mericourt-L'Abbe, France |
| Panel number, Roll of Honour, Australian War Memorial | 70 |
| Miscellaneous information from cemetery records | Parents: James and Margaret O'NEILL, West Maitland, New South Wales |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |