Schierokau was formerly part of the German Empire. In the German Empire, the place was called Breitenmarkt.
The place is now called Sieraków and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Schierokau | German Empire | Guttentag | 1936 |
| Breitenmarkt | German Empire | Guttentag | 1939 |
| Sieraków | Under Polish administration | Lubliniec | 1945 |
| Sieraków | Poland | Częstochowa | 1992 |