Cuclau was formerly part of the German Empire. In the German Empire, the place was called Sudslava.
The place is now called Sudslava and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Cuclau | Austro-Hungary | Reichenau a. d. Knieschna | before the Treaty of Saint-Germain |
| Cuclava | Austro-Hungary | Reichenau a. d. Knieschna | before the Treaty of Saint-Germain |
| Sudslava | Czechoslovakia | Rychnov nad Kněžnou | after the Treaty of Saint-Germain |
| Zutzlau | German Empire | Reichenau an der Knieschna | 1939 |
| Sudslava | German Empire | Reichenau an der Knieschna | 1939 |
| Sudslava | Czechoslovakia | Rychnov nad Kněžnou | 1945 |
| Sudslava | Czechoslovakia | Východní Čechy | 1992 |