Žumberk was formerly part of the German Empire. In the German Empire, the place was called Sonnberg.
The place is now called Slunečná and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sonnberg | Austro-Hungary | Krumau | before the Treaty of Saint-Germain |
| Žumberk | Czechoslovakia | Český Krumlov | after the Treaty of Saint-Germain |
| Sonnberg | Czechoslovakia | Český Krumlov | after the Treaty of Saint-Germain |
| Sonnberg | German Empire | Krummau/Moldau (Böhm.-Krumau) | 1938 |
| Žumberk | Czechoslovakia | Prachatice | 1945 |
| Slunečná | Czechoslovakia | Prachatice | 1992 |
| Slunečná | Czech Republic | Prachatice | 1993 |