Piaseczno was formerly part of the German Empire. In the German Empire, the place was called Petznik, Kr. Zempelburg.
The place is now called Piaseczno and belongs to Poland.
Historical place name | Country | Administration | Time |
---|---|---|---|
Petznick | German Empire | Flatow | before the Versailles Treaty |
Piaseczno | Poland | Sępólno | after the Versailles Treaty |
Petznik, Kr. Zempelburg | German Empire | Zempelburg | 1939 |
Piaseczno | Poland | Sępólno Krajeńskie | 1945 |
Piaseczno | Poland | Bydgoszcz | 1992 |