Waldau was formerly part of the German Empire. In the German Empire, the place was called Waldau.
The place is now called Valdov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Waldau | Austro-Hungary | Gabel | before the Treaty of Saint-Germain |
| Valdov | Czechoslovakia | Německé Jablonné | after the Treaty of Saint-Germain |
| Waldau | Czechoslovakia | Německé Jablonné | after the Treaty of Saint-Germain |
| Waldau | German Empire | Deutsch Gabel | 1938 |
| Valdov | Czechoslovakia | Liberec | 1945 |
| Valdov | Czechoslovakia | Česká Lípa | 1992 |
| Valdov | Czech Republic | Česká Lípa | 1993 |