Twardów was formerly part of the German Empire. In the German Empire, the place was called Hartfeld.
The place is now called Twardów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Twardow | German Empire | Jarotschin | before the Versailles Treaty |
| Twardów | Poland | Jarocin | after the Versailles Treaty |
| Hartfeld | German Empire | Jarotschin | 1939 |
| Twardów | Poland | Jarocin | 1945 |
| Twardów | Poland | Kalisz | 1992 |