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