Wonschow was formerly part of the German Empire. In the German Empire, the place was called Onšov.
The place is now called Onšov and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wonschow | Austro-Hungary | Ledeč | before the Treaty of Saint-Germain |
| Vonšov | Austro-Hungary | Ledeč | before the Treaty of Saint-Germain |
| Onšov | Czechoslovakia | Ledeč nad Sázavou | after the Treaty of Saint-Germain |
| Wonschow | German Empire | Ledetsch an der Sasau | 1939 |
| Onšov | German Empire | Ledetsch an der Sasau | 1939 |
| Onšov | Czechoslovakia | Ledeč nad Sázavou | 1945 |
| Onšov | Czechoslovakia | Jižní Čechy | 1992 |