Sedow was formerly part of the German Empire. In the German Empire, the place was called Sędów.
The place is now called Sędów and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Sedow | Russian Empire | Turek | 1914 |
| Sędów | Poland | Turek | 1921 |
| Sędów | German Empire | Turek | 1939 |
| Sędów | Poland | Poddębice | 1945 |
| Sędów | Poland | Sieradz | 1992 |