Ternell was formerly part of the German Empire. In the German Empire, the place was called Ternell, Forsthaus.
The place is now called Ternell, Försterei and belongs to Belgium.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ternell | German Empire | Eupen | before the Versailles Treaty |
| Ternell | Belgium | Liège | after the Versailles Treaty |
| Ternell, Forsthaus | German Empire | Eupen (einschl. Moresnet) | 1940 |
| Ternell | Belgium | Liège | 1945 |
| Ternell, Försterei | Belgium | Lüttich/Liège | 1993 |