| Regimental number | 2437 |
| Place of birth | Boggabri New South Wales |
| Religion | Roman Catholic |
| Occupation | Traveller |
| Address | Boggabri, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Brother, George John Thomas Dederer, Boggabri, New South Wales |
| Enlistment date | 27 May 1916 |
| Rank on enlistment | Private |
| Unit name | 34th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/51/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A30 Borda on 17 October 1916 |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | a Prov Corps |
| Fate | Returned to Australia 25 September 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt James Phillip Dederer on NR |
| Date of death | 25 March 1938 |
| Place of burial | Rookwood Necropolis |
