Piotrowo was formerly part of the German Empire. In the German Empire, the place was called Gilgenhof.
The place is now called Piotrowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pietrowo | German Empire | Kosten | before the Versailles Treaty |
| Piotrowo | Poland | Kościan | after the Versailles Treaty |
| Gilgenhof | German Empire | Kosten (Wartheland) | 1939 |
| Piotrowo Drugie | Poland | Kościan | 1945 |
| Piotrowo | Poland | Poznań | 1992 |