| Regimental number | 50853 |
| Date of birth | |
| Place of birth | Goodwood |
| Religion | Church of England |
| Occupation | Farmer |
| Marital status | Single |
| Age at embarkation | 29.11 |
| Height | 5' 10.5" |
| Weight | 199 lbs |
| Next of kin | Father, Roland Jefferis, Otiake |
| Previous military service | Served in 5th Mounted Rifles Regiment; still serving at time of NZEF enlistment. |
| Enlistment date | |
| Place of enlistment | Timaru |
| Rank on embarkation | Bombardier |
| Unit name | New Zealand Expeditionary Force, 32nd Reinforcements, New Zealand Field Artillery |
| Embarkation details | Unit embarked from Wellington on board HMNZT 96 Maunganui on |
| Discharge date | |
| Family/military connections | Brothers: 8/2956 Corporal Ralph Stanley Culling JEFFERIS, 2nd Bn, Wellington Infantry Regiment, attached to New Zealand Light Trench Mortar Battery, killed in action, 4 October 1917; 8/2957 Pte Roland Gordon JEFFERIS, Otago Infantry Regiment, died of disease, 2 November 1915. |
| Other details |
War service: Western Front Embarked Wellington, 21 November 1917; disembarked Liverpool, England, 8 January 1918, and marched in to NZ Field Artillery Depot, Aldershot. Admitted to Military Isolation Hospital, Aldershot, 5 February 1918; discharged to NZFA Depot, 19 February 1918. Proceeded overseas to France, 16 March 1918; marched out to 3rd Brigade Artillery, in the field, 23 March 1918, and posted to 12th Battery. Commenced return to New Zealand from Tilbury on board HT 'Corinthic', 12 March 1919; arrived Lytton, 22 April 1919; discharged, 21 May 1919. Total war service: 2 years 64 days (of which 1 year 154 days was abroad) Medals: British War Medal, Victory Medal |
| Miscellaneous details | Parents: Roland (b. England) and Mary (b. New Zealand) JEFFERIS |
| Date of death | |
| Sources | Nominal Roll Vol. 3: Roll 75, p. 43 Archives New Zealand (Wellington), Agency AABK, Series 18805 |