| Regimental number | 18714 |
| Date of birth | |
| Place of birth | Hastings |
| Religion | Roman Catholic |
| Occupation | Shepherd |
| Marital status | Single |
| Age at embarkation | 20 |
| Height | 5' 11" |
| Weight | 143 lbs |
| Next of kin | Sister, Miss Bridget Sullivan, Post Office, Hastings |
| Previous military service | Served in 9th (Hawke's Bay) Regiment, Territorial Force; still serving at time of NZEF enlistment. |
| Enlistment date | |
| Place of enlistment | Trentham |
| Rank on embarkation | Rifleman |
| Unit name | New Zealand Expeditionary Force, New Zealand Rifle Brigade, 9th Reinforcements to 2nd Battalion, F Company |
| Embarkation details | Unit embarked from Wellington on |
| Final rank | Rifleman |
| Final unit | 1st Battalion, New Zealand Rifle Brigade |
| Fate | Killed in Action |
| Age at death from cemetery records | 22 |
| Place of burial | No known grave |
| Commemoration details | Tyne Cot Memorial (New Zealand Apse, Panel No 7), Belgium |
| Miscellaneous information from cemetery records | Parents: Patrick Dillon O'Sullivan and Mary Sullivan, Taradale, Hawke's Bay |
| Other details |
War service: Western Front Embarked Wellington, 28 July 1916; disembarked Devonport, England, 3 October 1916, and marched into Sling Camp. Proceeded overseas to France, 20 October 1916; joined 1st Bn, NZ Rifle Brigade, in the field, 4 November 1916, and posted to D Company. Detached on duty to 1st Australian Casualty Clearing Station, 9 January 1917; rejoined unit, 21 January 1917. Admitted to No 3 NZ Field Ambulance, 3 August 1917 (myalgia); transferred to No 1 NZ Field Ambulance, 6 August 1917; rejoined unit, 18 August 1917. Wounded in action, remaining at duty, 6 August 1917. Killed in action, 12 October 1917. Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 2: Roll 37, p. 16 Archives New Zealand (Wellington), Agency AABK, Series 18805, File 7822698 |