Sajlerov was formerly part of the German Empire. In the German Empire, the place was called Sajlerov.
The place is now called Kraličky and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Seilerndorf | Austro-Hungary | Proßnitz | before the Treaty of Saint-Germain |
| Sailerov | Austro-Hungary | Proßnitz | before the Treaty of Saint-Germain |
| Sajlerov | Czechoslovakia | Prostějov | after the Treaty of Saint-Germain |
| Seilerndorf | German Empire | Proßnitz | 1939 |
| Sajlerov | German Empire | Proßnitz | 1939 |
| Sajlerov | Czechoslovakia | Prostějov | 1945 |
| Kraličky | Czechoslovakia | Jižní Morava | 1992 |