Oleszno was formerly part of the German Empire. In the German Empire, the place was called Welschenburg.
The place is now called Oleszno and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Welschenburg | German Empire | Dramburg | 1939 |
| Oleszno | Under Polish administration | Drawsko | 1945 |
| Oleszno | Poland | Koszalin | 1992 |