| Regimental number | 5857 |
| Place of birth | Burra South Australia |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Wellington Street, Kensington, South Australia |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs Mary O'Sullivan, Wellington Street, Kensington, South Australia |
| Enlistment date | 8 February 1915 |
| Rank on enlistment | Driver |
| Unit name | Light Horse Brigade Train 4 |
| AWM Embarkation Roll number | 25/102/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A19 Afric on 26 May 1915 |
| Regimental number from Nominal Roll | 8939 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 1st Division Train |
| Fate | Returned to Australia 23 March 1919 |
| Family/military connections | Brother: 5858 Driver Leslie O'SULLIVAN, Light Horse Brigade Train 4. |
| Date of death | 20 October 1943 |
| Age at death | 45 |
| Place of burial | AIF Cemetery, West Terrace, Adelaide, South Australia |