Saint Genois was formerly part of the German Empire. In the German Empire, the place was called Blatnia.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Saint Genois | Austro-Hungary | Bielitz/Bielsko | before the Treaty of Saint-Germain |
| Błatnia | Austro-Hungary | Bielitz/Bielsko | before the Treaty of Saint-Germain |
| Błatnia | Poland | Bielsko | after the Treaty of Saint-Germain |
| Blatnia | German Empire | Bielitz | 1939 |
| Błatnia | Poland | Bielsko-Biała | 1945 |
| NN | Poland | Bielsko | 1992 |