| Regimental number | 23/1488 |
| Address | Whanawhana |
| Marital status | Single |
| Next of kin | Father, John Treleaven, Trekee Street, Bath, England |
| Rank on embarkation | Rifleman |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, New Zealand Rifle Brigade, 1st Battalion, 2nd Reinforcements, E Company |
| Embarkation details | Unit embarked from Wellington on |
| Members of E Company left New Zealand on board two ships, HMNZT 35 'Willochra' and HMNZT 36 'Tofua'. It is not possible from the Nominal Roll to determine on which ship an individual embarked. | |
| Final rank | Rifleman |
| Final unit | 1st Battalion, New Zealand Rifle Brigade |
| Fate | Died of wounds |
| Age at death from cemetery records | 21 |
| Place of burial | Dernancourt Communal Cemetery Extension (Plot II, Row A, Grave No 22), Somme, France |
| Miscellaneous information from cemetery records | Parents: John and Mary Anne Treleaven, Trekee Farm, St Teath, Cornwall, England |
| Other details |
War service: Egypt, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: E Company/2nd Rfts of 1st NZRB. Surname incorrectly entered on Nominal Roll as TREALEAVEN |