Siedmiorogów was formerly part of the German Empire. In the German Empire, the place was called Siebenwald.
The place is now called Siedmiorogów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Siebenwald | German Empire | Koschmin | before the Versailles Treaty |
| Siedmiorogów | Poland | Krotoszyn | after the Versailles Treaty |
| Siebenwald | German Empire | Gostingen | 1939 |
| Siedmiorogów | Poland | Gostyń | 1945 |
| Siedmiorogów | Poland | Leszno | 1992 |