| Regimental number | 5/166 |
| Date of birth | |
| Place of birth | Timaru |
| Religion | Church of England |
| Occupation | Stock agent |
| Address | Timaru |
| Marital status | Single |
| Age at embarkation | 24 |
| Height | 5' 9" |
| Weight | 130 lbs |
| Next of kin | Father, Edwin Roland Guinness, Timaru |
| Previous military service | Served in 8th Mounted Rifles, Territorial Force; not serving in any military unit at time of enlistment. Previously given discharge on account of bronchitis. |
| Enlistment date | |
| Place of enlistment | Trentham |
| Rank on embarkation | Sergeant |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 4th Reinforcements, Army Service Corps |
| Final rank | 2nd Lieutenant |
| Final unit | 2nd Battalion, New Zealand Rifle Briogade |
| Fate | Killed in Action |
| Age at death from cemetery records | 27 |
| Place of burial | No known grave |
| Commemoration details | Tyne Cot Memorial (New Zealand Apse, Panel No 7), Tyne Cot Cemetery, Belgium |
| Miscellaneous information from cemetery records | Parents: E.R. and F.A. Guinness, Timaru |
| Other details |
War service: Egypt, Gallipoli, Western Front Embarked Alexandria to join the Mediterranean Expeditionary Force, Gallipoli, 4 November 1915. Joined Divisional Train, Anzac, 13 November 1915. Admitted to NZ General Hospital, Cairo, 30 December 1915 (catarrh and jaundice); discharged to Convalescent Home, Heliopolis, 16 January 1916; joined No 4 Company, Zeitoun, 10 February 1916. Embarked Egypt to join the British Expeditionary Force, France, 9 April 1916. Recommended for a Commission in the NZEF. Detached to England, 18 April 1917. Commissioned as 2nd Lt, 11 June 1917. Proceeded overseas to France, 28 June 1917; joined 2nd Bn, NZ Rifle Brigade, in the field, 9 July 1917, and posted to C Company.Transferred to B Company, 19 July 1917. Detached to Brigade Class of Instruction, 10 August 1917; rejoined unit, 17 August 1917. On leave to Paris, 8 September 1917; rejoined unit from leave, 14 September 1917. Killed in action, 12 October 1917. War service: 2 years 295 days (of which 2 years 179 days were abroad) Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Army Service Corps/Fourth |
| Sources | Archives New Zealand (Wellington), Agency AABK, Series 1880, File 7880084 |