Tarnowa was formerly part of the German Empire. In the German Empire, the place was called Kampfheide.
The place is now called Tarnowa and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Tarnowo (Kr. Bomst) | German Empire | Bomst | before the Versailles Treaty |
| Tarnowa | Poland | Wolsztyn | after the Versailles Treaty |
| Kampfheide | German Empire | Wollstein | 1939 |
| Tarnowa | Poland | Wolsztyn | 1945 |
| Tarnowa | Poland | Poznań | 1992 |