| Regimental number | 867 |
| Place of birth | Middle Park, Melbourne, Victotria |
| Other Names | John Athelstan Corteen |
| School | Casterton State School, Victoria |
| Religion | Church of England |
| Occupation | Clerk |
| Address | 20 Scott Street, Essendon, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Mother, Mrs Margaret Tytherleigh, 20 Scott Street, Essendon, Victoria |
| Previous military service | Nil |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 6th Battalion, G Company |
| AWM Embarkation Roll number | 23/23/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board Transport A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 6th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Gallipoli, Turkey |
| Age at death | 17.8 |
| Age at death from cemetery records | 17 |
| Place of burial | Shrapnel Valley Cemetery (Plot II, Row C, Grave No. 17), Gallipoli |
| Panel number, Roll of Honour, Australian War Memorial | 48 |
| Miscellaneous information from cemetery records | Commemorated on Christ Church Anglican Cathedral Roll of Honour, Ballarat, Victoria. Parents: Charles Smith and Margaret Jane TYTHERLEIGH, Corleigh, Scott Street, Essendon, Victoria. Native of Middle Park, Melbourne |
| Family/military connections | Cousins: Lieutenant Colonel Walter Ramsay McNICOLL CB CMG DSO, 7th Bn, returned to Australia, 29 September 1918; Lieutenant Colonel John E. MOTT MC & Bar, 48th Bn, effective abroad (still overseas). |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |