Wełna was formerly part of the German Empire. In the German Empire, the place was called Welna.
The place is now called Wełna and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Welna | German Empire | Obornik/Obernick | before the Versailles Treaty |
| Wełna, Dwór | Poland | Oborniki | after the Versailles Treaty |
| Welna | German Empire | Obernick | 1939 |
| Wełna | Poland | Oborniki | 1945 |
| Wełna | Poland | Piła | 1992 |