Troszczyn was formerly part of the German Empire. In the German Empire, the place was called Wiesenhauland.
The place is now called Troszczyn and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Troszczyn | German Empire | Grätz | before the Versailles Treaty |
| Troszczyn | Poland | Nowy Tomyśl | after the Versailles Treaty |
| Wiesenhauland | German Empire | Grätz (Wartheland) | 1939 |
| Troszczyn | Poland | Nowy Tomyśl | 1945 |
| Troszczyn | Poland | Poznań | 1992 |