Fehlen was formerly part of the German Empire. In the German Empire, the place was called Fehlen.
The place is now called Wieleń Zaobrzański and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Fehlen | German Empire | Bomst | before the Versailles Treaty |
| Wieleń Zaobrzański | Poland | Wolsztyn | after the Versailles Treaty |
| Fehlen | German Empire | Wollstein | 1939 |
| Wieleń Zaobrzański | Poland | Wolsztyn | 1945 |
| Wieleń Zaobrzański | Poland | Leszno | 1992 |