| Regimental number | 6977 |
| Place of birth | Carcoar, New South Wales |
| School | Convent School, Cowra, New South Wales |
| Religion | Roman Catholic |
| Occupation | Mail assistant |
| Address | Ryde Post Office, Ryde, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Height | 5' 11" |
| Weight | 147 lbs |
| Next of kin | Father, C J Derwin, Redfern Street, Cowra, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Cootamundra, New South Wales |
| Rank on enlistment | Private |
| Unit name | 13th Battalion, 23rd Reinforcement |
| AWM Embarkation Roll number | 23/30/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A72 Beltana on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 13th Battalion |
| Fate | Died of wounds |
| Age at death from cemetery records | 19 |
| Place of burial | Trois Arbres Cemetery (Plot I, Row Y, Grave No 10), Steenwerck, Nord Pas de Calais, France |
| Panel number, Roll of Honour, Australian War Memorial | 68 |
| Miscellaneous information from cemetery records | Parents: Charles James and Annie DERWIN, Cowra, New South Wales |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, DERWIN Clemont John |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
