The Ortenburg castle of Bautzen is built around fortifications originally constructed by the Milceni. Charles the Younger, son of Charlemagne, defeated the Milceni and burnt their fortress in 806.WendishHeritage.org. "History - Background and Context ". Accessed November 8, 2006. Henry the Fowler, King of the Germans, defeated the Slavic tribe in 932 and demanded conversion to Christianity, although this was only partially successful. Emperor Otto I defeated the Lusatians in 963 and placed them under the rule of Margrave Gero. The Milceni were finally subjugated by Margrave Ekkehard I of Meissen ca. 990 and had their territory incorporated into the Holy Roman Empire. The Milceni were then gradually Germanized or merged with the Lusatians of Lower Lusatia into the Sorbian ethnic group.
