Niezychowko, Gut was formerly part of the German Empire. In the German Empire, the place was called Seeheim, Kr. Wirsitz *.
The place is now called Nieżychowo * and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Niezychowko, Gut | German Empire | Wirsitz | before the Versailles Treaty |
| Nieżychówko | Poland | Wyrzysk | after the Versailles Treaty |
| Seeheim, Kr. Wirsitz * | German Empire | Wirsitz | 1939 |
| Nieżychowo * | Poland | Wyrzysk | 1945 |
| Nieżychowo * | Poland | Piła | 1992 |