| Regimental number | 7/804 |
| Address | c/o K D Meyer, Waituna, Waimate |
| Marital status | Single |
| Next of kin | Brother, Captain Frederick John Duncan, Pilot, Dunedin Harbour Board |
| Previous military service | Served in the Boer War. |
| Rank on embarkation | Quartermaster Sergeant |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, 3rd Reinforcements, Canterbury Mounted Rifles |
| Embarkation details | Unit embarked from Wellington on board HMNZT 19 Apimara on |
| Final rank | Trooper |
| Final unit | Canterbury Mounted Rifles Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 45 |
| Place of burial | No known grave |
| Commemoration details | Hill 60 (New Zealand) Memorial, Gallipoli, Turkey |
| Miscellaneous information from cemetery records | Parents: Malcolm and Mary Duncan, Rangiora, Christchurch |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Canterbury Mounted Rifles/Third |