Ullersdorf was formerly part of the German Empire. In the German Empire, the place was called Ullersdorf.
The place is now called Modlęcin and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ullersdorf | German Empire | Schweidnitz | 1939 |
| Suchowola | Under Polish administration | Świdnica | 1945 |
| Modlęcin | Poland | Wałbrzych | 1992 |