NN was formerly part of the German Empire. In the German Empire, the place was called Konty-Maciejewo.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Konty-Maciejewo | German Empire | Kosten | before the Versailles Treaty |
| NN | Poland | Kościan | after the Versailles Treaty |
| Konty-Maciejewo | German Empire | Kosten (Wartheland) | 1939 |
| Kąty-Maciejewo | Poland | Leszno | 1945 |
| NN | Poland | Leszno | 1992 |