Kotzlau was formerly part of the German Empire. In the German Empire, the place was called Koclov.
The place is now called Novosedly * and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kozlow | Austro-Hungary | Strakonitz | before the Treaty of Saint-Germain |
| Koclov | Austro-Hungary | Strakonitz | before the Treaty of Saint-Germain |
| Koclov | Czechoslovakia | Strakonice | after the Treaty of Saint-Germain |
| Kotzlau | German Empire | Strakonitz | 1939 |
| Koclov | German Empire | Strakonitz | 1939 |
| Koclov | Czechoslovakia | Horažďovice | 1945 |
| Novosedly * | Czechoslovakia | Strakonice | 1992 |
| Novosedly * | Czech Republic | Strakonice | 1993 |