As Margrave Egbert II of Meissen supported anti-king Rudolf of Rheinfelden during the Investiture Controversy, King Henry IV of Germany in 1076 awarded the Milceni lands of Upper Lusatia as a fief to the Bohemian duke Vratislav II. After Emperor Frederick Barbarossa had elevated Duke Vladislaus II to the rank of a King of Bohemia in 1158, the Upper Lusatian lands around Bautzen evolved into a Bohemian crown land. Around 1200, large numbers of German settlers came to Lusatia in the course of the "Ostsiedlung", settling in the forested areas yet not inhabited by the Slavs. The Bohemian rule in Upper Lusatia was secured with the extinction of the rival Brandenburg House of Ascania in 1320 and the rise of the Luxembourg dynasty, Kings of Bohemia starting in 1310.