Grünhagen was formerly part of the German Empire. In the German Empire, the place was called Grünhagen (Kr. Altburgund).
The place is now called Kowalewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grünhagen | German Empire | Schubin | before the Versailles Treaty |
| Kowalewo | Poland | Szubin | after the Versailles Treaty |
| Grünhagen | German Empire | Altburgund | 1939 |
| Grünhagen (Kr. Altburgund) | German Empire | Altburgund | 1939 |
| Kowalewo | Poland | Szubin | 1945 |
| Kowalewo | Poland | Bydgoszcz | 1992 |