Wagau was formerly part of the German Empire. In the German Empire, the place was called Vadkov.
The place is now called Vadkov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wagau | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Vatkov | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Vadkov | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Wagau | German Empire | Pisek | 1939 |
| Vadkov | German Empire | Pisek | 1939 |
| Vadkov | Czechoslovakia | Prachatice | 1945 |
| Vadkov | Czechoslovakia | Prachatice | 1992 |
| Vadkov | Czech Republic | Prachatice | 1993 |