Slavník dynasty
The Slavniks/Slavníks or Slavnikids (Czech: Slavníkovci; German: Slawnikiden; Polish: Sławnikowice) was a dynasty in the Duchy of Bohemia during the 10th century. The center of the semi-independent principality was the gord of Libice located at the confluence of the rivers Cidlina and Elbe. The Slavníks competed with the Přemyslid dynasty for control over Bohemia and eventually succumbed to them. It is often considered to be related to the White Croats.