| Regimental number | 6855 |
| Place of birth | Fremantle, Western Australia |
| School | Scotch College, Claremant, Western Australia |
| Religion | Church of England |
| Occupation | Pay clerk |
| Address | Haberfield, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Herbert Clarence Napthaly, 189 Ramsay Road, Haberfield, New South Wales |
| Previous military service | Connected with several others who died, one was his cousin Cecil Monkhouse, M.M. Machine Gunner. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 19th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/36/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A16 Port Melbourne on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 35th Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Viller Bretonneux, France |
| Age at death | 21 |
| Age at death from cemetery records | 21 |
| Place of burial | Namps-Au-Val British Cemetery (Plot I, Row J, Grave No. 26), France |
| Panel number, Roll of Honour, Australian War Memorial | 125 |
| Miscellaneous information from cemetery records | Parents: Herbert and Annie NAPTHALY, 37 Marshall Street, Petersham, New South Wales. Native of Fremantle, Western Australia |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |