| Regimental number | 2/489 |
| Date of birth | |
| Place of birth | Liverpool, England |
| Occupation | Clerk |
| Address | c/o Bank of New Zealand, Petone |
| Marital status | Single |
| Height | 5' 7" |
| Next of kin | Brother, T De Ridder, Building Station, Crown Creek, Wellington |
| Enlistment date | |
| Place of enlistment | Wellington |
| Rank on embarkation | Gunner |
| Enlistment status | Volunteer |
| Unit name | New Zealand Expeditionary Force, Main Body, New Zealand Field Artillery |
| Embarkation details | Unit embarked from Wellington on |
| Final rank | Gunner |
| Final unit | 1st Battery, 1st Brigade, New Zealand Field Artillery |
| Fate | Died of disease |
| Age at death from cemetery records | 26 |
| Place of burial | Etaples Military Cemetery (Plot XLIX, Row E, Grave no 32), France |
| Miscellaneous information from cemetery records | Brother: Mr P.G. De Ridder, Johnsonville, Wellington |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Nominal Roll Vol. 1: Field Artillery/Main Body |