| Regimental number | 10/112 |
| Date of birth | |
| Place of birth | Normandy, Taranaki |
| Religion | Roman Catholic |
| Occupation | Railway employee |
| Address | Duncan Street, Wanganui East |
| Marital status | Single |
| Age at embarkation | 22.3 |
| Height | 5' 5" |
| Weight | 146 lbs |
| Next of kin | Father, Arthur O'Keeffe Snr, Duncan Street, Wanganui East |
| Previous military service | Served in B Company, 7th Regiment, Territorial Force; still serving at time of NZEF enlistment. |
| Enlistment date | |
| Rank on embarkation | Private |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, Main Body, Wellington Infantry Battalion |
| Embarkation details | Unit embarked from Wellington on board HMNZT 10 Arawa on |
| Final rank | Private |
| Final unit | Wellington Infantry Battalion |
| Fate | Died of wounds |
| Place of burial | At sea |
| Commemoration details | The Lone Pine Memorial (Panel 76), Gallipoli, Turkey The Lone Pine Memorial, situated in the Lone Pine Cemetery at Anzac, is the main Australian Memorial on Gallipoli, and one of four memorials to men of the New Zealand Expeditionary Force. Designed by Sir John Burnet, the principal architect of the Gallipoli cemeteries, it is a thick tapering pylon 14.3 metres high on a square base 12.98 metres wide. It is constructed from limestone mined at Ilgardere in Turkey. The Memorial commemorates the 3268 Australians and 456 New Zealanders who have no known grave and the 960 Australians and 252 New Zealanders who were buried at sea after evacuation through wounds or disease. The names of New Zealanders commemorated are inscribed on stone panels mounted on the south and north sides of the pylon, while those of the Australians are listed on a long wall of panels in front of the pylon and to either side. Names are arranged by unit and rank. The Memorial stands over the centre of the Turkish trenches and tunnels which were the scene of heavy fighting during the August offensive. Most cemeteries on Gallipoli contain relatively few marked graves, and the majority of Australians killed on Gallipoli are commemorated here. |
| Miscellaneous information from cemetery records | Son of Mr. and Mrs. Arthur O'Keefe, 98 Duncan St., Wanganui; husband of Mrs. H. O'Keefe. |
| Other details |
War service: Egypt, Gallipoli Died on board HMT 'Derflinger', on or about 30 April 1915 (gun shot wound, chest and side); buried at sea. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Wellington Infantry Batln/Main Body |
| Sources | Archives New Zealand (Wellington), Agency AABK, Series 18805, File 21382069 |