Riegersdorf was formerly part of the German Empire. In the German Empire, the place was called Riegersdorf.
The place is now called Modřec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Riegersdorf | Austro-Hungary | Polička | before the Treaty of Saint-Germain |
| Modřec | Austro-Hungary | Polička | before the Treaty of Saint-Germain |
| Modrc | Austro-Hungary | Polička | before the Treaty of Saint-Germain |
| Modřec | Czechoslovakia | Polička | after the Treaty of Saint-Germain |
| Riegersdorf | Czechoslovakia | Polička | after the Treaty of Saint-Germain |
| Riegersdorf | German Empire | Zwittau | 1938 |
| Modřec | Czechoslovakia | Polička | 1945 |
| Modřec | Czechoslovakia | Svitavy | 1992 |
| Modřec | Czech Republic | Svitavy | 1993 |