Siemionki was formerly part of the German Empire. In the German Empire, the place was called Leinenfeld.
The place is now called Siemionki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Siemionken | German Empire | Strelno | before the Versailles Treaty |
| Siemionki | Poland | Mogilno | after the Versailles Treaty |
| Leinenfeld | German Empire | Hohensalza | 1939 |
| Siemionki | Poland | Mogilno | 1945 |
| Siemionki | Poland | Bydgoszcz | 1992 |