| Regimental number | 2551 |
| Place of birth | Adaminaby New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Adaminaby, New South Wales |
| Marital status | Single |
| Age at embarkation | 30 |
| Next of kin | Father, Matthew James O'Neill, Adaminaby, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 55th Battalion, 5th Reinforcement |
| AWM Embarkation Roll number | 23/72/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 55th Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 32 |
| Place of burial | Aeroplane Cemetery (Plot VI, Row A, Grave No. 14), Ypres, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 161 |
| Miscellaneous information from cemetery records | Parents: Matthew and Catherine O'NEILL, Adaminaby, New South Australia |
| 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
