Boleslawiec was formerly part of the German Empire. In the German Empire, the place was called Bolkenburg.
The place is now called Bolesławiec and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Boleslawiec | Russian Empire | Veljunˈ | 1914 |
| Bolesławiec | Poland | Wieluń | 1921 |
| Bolesławiec | German Empire | Welungen | 1939 |
| Bolkenburg | German Empire | Welungen | 1939 |
| Bolesławiec | Poland | Wieruszów | 1945 |
| Bolesławiec | Poland | Kalisz | 1992 |