Radostowice was formerly part of the German Empire. In the German Empire, the place was called Sabinengrund.
The place is now called Sabinówka and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sabinengrund | German Empire | Freystadt i. Niederschles. | 1939 |
| Radostowice | Under Polish administration | Kożuchów | 1945 |
| Sabinówka | Poland | Zielona Góra | 1992 |