Wostrowa was formerly part of the German Empire. In the German Empire, the place was called Wostrowa.
The place is now called Ostrov u Bezdružic and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wostrowa | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Ostrov | Austro-Hungary | Plan | before the Treaty of Saint-Germain |
| Ostrov | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Wostrowa | Czechoslovakia | Planá | after the Treaty of Saint-Germain |
| Wostrowa | German Empire | Tepl | 1938 |
| Ostrov | Czechoslovakia | Stříbro | 1945 |
| Ostrov u Bezdružic | Czechoslovakia | Plzeň-sever | 1992 |
| Ostrov u Bezdružic | Czech Republic | Plzeň-sever | 1993 |