
| Regimental number | 3867 |
| Place of birth | Melbourne, Victoria |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | 46 Capel Street, West Melbourne, Victoria |
| Marital status | Single |
| Age at embarkation | 27 |
| Height | 5' 2.5" |
| Weight | 133 lbs |
| Next of kin | Cousin, Maude Maynard, 9 Bayview Street, Prahran, Victoria |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 7th Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/24/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A40 Ceramic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 59th Battalion |
| Fate | Died of self-inflicted injuries |
| Place of burial | Anzac Cemetery (Plot I, Row B, Grave No. 6), Sailly-Sur-La-Lys, France |
| Panel number, Roll of Honour, Australian War Memorial | 168 |
| Other details |
War service: Egypt, Western Front Allotted to and proceeded to join 59th Bn, Tel el Kebir, 26 February 1916. Admitted to 8th Field Ambulance, Ferry Post, 21 April 1916 (influenza); discharged to unit, 24 April 1916. Embarked Alexandria to join the British Expeditionary Force, 18 June 1916; disembarked Marseilles, France, 29 June 1916. Died of wounds (self-inflicted), 19 July 1916. Statement, Lt Col H.T.C. LAYH, CO, 59th Bn, to Court of Enquiry, held in the field, 24 September 1916: 'Pte O'Sullivan was sent back by the 59th Battalion when it proceeded to the trenches 19-7-16, to conduct the 57th Battalion to the billets evacuated ... I am of opinion that he must have committed suicide while of unsound mind.' |
| Sources | NAA: B2455, O'SULLIVAN William |