Grünberg was formerly part of the German Empire. In the German Empire, the place was called Kamhajek.
The place is now called Kamhajek and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grünberg | Austro-Hungary | Kolin | before the Treaty of Saint-Germain |
| Kamhajek | Austro-Hungary | Kolin | before the Treaty of Saint-Germain |
| Kamhajek | Czechoslovakia | Kolín | after the Treaty of Saint-Germain |
| Grünberg | German Empire | Kolin | 1939 |
| Kamhajek | German Empire | Kolin | 1939 |
| Kamhajek | Czechoslovakia | Kolín | 1945 |
| Kamhajek | Czechoslovakia | Střední Čechy | 1992 |