Wostrow was formerly part of the German Empire. In the German Empire, the place was called Ostrov.
The place is now called Ostrov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wostrow | Austro-Hungary | Blatna | before the Treaty of Saint-Germain |
| Ostrov | Austro-Hungary | Blatna | before the Treaty of Saint-Germain |
| Ostrov | Czechoslovakia | Blatná | after the Treaty of Saint-Germain |
| Ostrau | German Empire | Blatna | 1939 |
| Ostrov | German Empire | Blatna | 1939 |
| Ostrov | Czechoslovakia | Příbram | 1945 |
| Ostrov | Czechoslovakia | Příbram | 1992 |
| Ostrov | Czech Republic | Příbram | 1993 |