Schwarzenau (Bz. Bromberg) was formerly part of the German Empire. In the German Empire, the place was called Schwarzenau (Wartheland).
The place is now called Czerniejewo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Schwarzenau (Bz. Bromberg) | German Empire | Witkowo | before the Versailles Treaty |
| Czerniejewo | German Empire | Witkowo | before the Versailles Treaty |
| Czerniejewo | Poland | Gniezno | after the Versailles Treaty |
| Schwarzenau | German Empire | Gnesen | 1939 |
| Schwarzenau (Wartheland) | German Empire | Gnesen | 1939 |
| Czerniejewo | Poland | Gniezno | 1945 |
| Czerniejewo | Poland | Poznań | 1992 |