Mierzwin was formerly part of the German Empire. In the German Empire, the place was called Possen.
The place is now called Mierzwin and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Possen | German Empire | Bunzlau | 1939 |
| Mierzwin | Under Polish administration | Bolesławiec | 1945 |
| Mierzwin | Poland | Jelenia Góra | 1992 |