Birnbäumel was formerly part of the German Empire. In the German Empire, the place was called Birnbäumel.
The place is now called Gruszeczka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Birnbäumel | German Empire | Militsch | 1939 |
| Gruszeczka | Under Polish administration | Milicz | 1945 |
| Gruszeczka | Poland | Wrocław | 1992 |