Welletschin was formerly part of the German Empire. In the German Empire, the place was called Welletschin.
The place is now called Velečín and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Welletschin | Austro-Hungary | Podersam | before the Treaty of Saint-Germain |
| Velečín | Austro-Hungary | Podersam | before the Treaty of Saint-Germain |
| Velečín | Czechoslovakia | Podbořany | after the Treaty of Saint-Germain |
| Weletschin | Czechoslovakia | Podbořany | after the Treaty of Saint-Germain |
| Weletschin | German Empire | Podersam | 1938 |
| Welletschin | German Empire | Podersam | 1938 |
| Velečín | Czechoslovakia | Podbořany | 1945 |
| Velečín | Czechoslovakia | Plzeň-sever | 1992 |
| Velečín | Czech Republic | Plzeň-sever | 1993 |