| Regimental number | 1892 |
| Place of birth | Armidale New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Warialda PO, Warialda, New South Wales |
| Marital status | Single |
| Age at embarkation | 37 |
| Next of kin | Father, William O'Neill, Warialda PO, Warialda, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 33rd Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/50/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A15 Port Sydney on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 33rd Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 39 |
| Place of burial | Toronto Avenue Cemetery (Row A, Grave No. 20), Warneton, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 122 |
| Miscellaneous information from cemetery records | Parents: William and Mary O'NEILL, Geddis Street, Warialda. Native of Salisbury Plains, New South Wales |
| Family/military connections | Brother: 764 Sapper James O'NEILL, Tunnelling Companies Details, died of disease, 10 April 1918. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
