Proseč was formerly part of the German Empire. In the German Empire, the place was called Proschwitz.
The place is now called Proseč pod Ještědem and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Proschwitz | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Proseč | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Proseč | Czechoslovakia | Turnov | after the Treaty of Saint-Germain |
| Proschwitz | German Empire | Reichenberg | 1938 |
| Proseč | Czechoslovakia | Liberec | 1945 |
| Proseč pod Ještědem | Czechoslovakia | Liberec | 1992 |
| Proseč pod Ještědem | Czech Republic | Liberec | 1993 |