The earlier district of Prignitz was the buffer between Brandenburg and Mecklenburg. It was resettled by Germans, especially from the Bremen area, following the First Wendish Crusade of 1147. The rate of German settlement increased over the following decades. The eastern half was dominated by the pro-German counts von Plotho who brought their own vassals such as the von Blumenthal and von Grabow families with them. The western half was dominated by robber barons, especially the Gans zu Putlitz family and their vassals, the von Quitzows. When Frederick, Count of Zollern was appointed Margrave in 1411, he faced an uprising of the Wendish nobility, supported by the Wendish Duke of Mecklenburg. However, he was able to put down the revolt at the battle of the Cremmer Dam, with the support of the German nobility. Families who had stayed loyal were rewarded. Otto von Blumenthal, for example, was made Captain of the Prignitz from 1415 to 1422 and of Lenzen from 1420.