| Regimental number | 66991 |
| Place of birth | Corowa New South Wales |
| Religion | Church of England |
| Occupation | Boilermaker's assistant |
| Address | 21 Elliott Street, Balmain, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Mother, Mrs F Stonnill, 21 Elliott Street, Balmain, Sydney, New South Wales |
| Previous military service | 2nd Battalion 36th Infantry |
| Enlistment date | 4 July 1918 |
| Rank on enlistment | Private |
| Unit name | New South Wales Reinforcement 23 |
| AWM Embarkation Roll number | 23/111/6 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board SS Wyreema on 14 October 1918 |
| Miscellaneous details (Nominal Roll) | Name does not appear on Nominal Roll |
| Family/military connections | Brother: 66996 Pte William Adnett STONNILL. |
