| Regimental number | 7301 |
| Religion | Roman Catholic |
| Occupation | Pastrycook |
| Address | Newcastle, New South Wales |
| Marital status | Single |
| Age at embarkation | 30 |
| Next of kin | Mother, Mrs. R. O'Sullivan, 162 Darby Street, Cooks Hill, Newcastle, New South Wales |
| Enlistment date | 24 January 1917 |
| Rank on enlistment | Private |
| Unit name | 2nd Battalion, 24th Reinforcement |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on 10 February 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Battalion |
| Fate | Returned to Australia 5 April 1919 |
| Family/military connections | Brother: 7302 Pte Richard O'SULLIVAN, 2nd Bn, returned to Australia, 17 March 1919; 7300 Pte Henry Robert William O'SULLIVAN, 2nd Bn, effective abroad (still overseas). |
| Date of death | 25 April 1925 |
| Place of burial | Sandgate Cemetery |
