| Regimental number | 4259 |
| Religion | Roman Catholic |
| Occupation | Shop assistant |
| Address | S 8 Goodhope Street, Paddington, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, J J O'Sullivan, 8 Goodhope Street, Paddington, Sydney, NSW. |
| Enlistment date | 19 August 1915 |
| Date of enlistment from Nominal Roll | 18 August 1915 |
| Rank on enlistment | Private |
| Unit name | 3rd Battalion, 13th Reinforcement |
| AWM Embarkation Roll number | 23/20/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A60 Aeneas on 20 December 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 15th Company, Australian Army Service Corps |
| Fate | Returned to Australia 15 May 1919 |
