Łąski Piec was formerly part of the German Empire. In the German Empire, the place was called Quelltal.
The place is now called Łąski Piec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lonskipiec | German Empire | Schwetz | before the Versailles Treaty |
| Łąski Piec | Poland | Świecie | after the Versailles Treaty |
| Quelltal | German Empire | Tuchel | 1939 |
| Łąski Piec | Poland | Tuchola | 1945 |
| Łąski Piec | Poland | Bydgoszcz | 1992 |