Wotsch was formerly part of the German Empire. In the German Empire, the place was called Wotsch.
The place is now called Boč and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wotsch | Austro-Hungary | Kaaden | before the Treaty of Saint-Germain |
| Voč | Austro-Hungary | Kaaden | before the Treaty of Saint-Germain |
| Boč | Czechoslovakia | Kadaň | after the Treaty of Saint-Germain |
| Wotsch | Czechoslovakia | Kadaň | after the Treaty of Saint-Germain |
| Wotsch | German Empire | Kaaden | 1938 |
| Boč | Czechoslovakia | Jáchymov | 1945 |
| Boč | Czechoslovakia | Karlovy Vary | 1992 |
| Boč | Czech Republic | Karlovy Vary | 1993 |