| Regimental number | 5730 |
| Place of birth | Woodburn New South Wales |
| Religion | Roman Catholic |
| Occupation | Cook |
| Address | Palace Hotel, Mackay, Queensland |
| Marital status | Single |
| Age at embarkation | 33 |
| Next of kin | Brother, E J O'Neill, Ballina, New South Wales |
| Enlistment date | 5 February 1916 |
| Rank on enlistment | Private |
| Unit name | 9th Battalion, 18th Reinforcement |
| AWM Embarkation Roll number | 23/26/4 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A49 Seang Choon on 4 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Anzac Corps School |
| Fate | Returned to Australia 13 July 1919 |