Bysław was formerly part of the German Empire. In the German Empire, the place was called Bislau.
The place is now called Teolog and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Groß-Bislaw | German Empire | Tuchel | before the Versailles Treaty |
| Theolog | German Empire | Tuchel | before the Versailles Treaty |
| Bysław | Poland | Tuchola | after the Versailles Treaty |
| Teolog | Poland | Tuchola | after the Versailles Treaty |
| Bislau | German Empire | Tuchel | 1939 |
| Bysław | Poland | Tuchola | 1945 |
| Teolog | Poland | Tuchola | 1945 |
| Bysław | Poland | Bydgoszcz | 1992 |
| Teolog | Poland | Bydgoszcz | 1992 |