Rentschen was formerly part of the German Empire. In the German Empire, the place was called Rentschen.
The place is now called Radoszyn and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rentschen | German Empire | Züllichau-Schwiebus | 1939 |
| Radoszyn | Under Polish administration | Świebodzin | 1945 |
| Radoszyn | Poland | Zielona Góra | 1992 |