| Regimental number | 3888 |
| Religion | Roman Catholic |
| Occupation | Architect |
| Address | Stanmore, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs Winifred O'Neill, 48 Percival Road, Stanmore, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 1st Pioneer Battalion, 10th Reinforcement |
| AWM Embarkation Roll number | 14/13/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A68 Anchises on |
| Age at death from cemetery records | 33 |
| Place of burial | Fouilloy Communal Cemetery (Row A, Grave No. 2), France |
| Panel number, Roll of Honour, Australian War Memorial | 70 |
| Miscellaneous information from cemetery records | Parents: Michael and Winifred O'NEILL, Regent and Albermaarle Streets, Newtown, Sydney |