Mühlengrund (Ostpr.) was formerly part of the German Empire. In the German Empire, the place was called Mühlengrund (Ostpr.).
The place is now called Konopki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Konopken | German Empire | Johannisburg | 1938 |
| Mühlengrund (Ostpr.) | German Empire | Johannisburg | 1939 |
| Konopki | Under Polish administration | Pisz | 1945 |
| Konopki | Poland | Suwałki | 1992 |