Vratislaus II of Bohemia
Lothair Udo granted him the castle of Tangermünde in the Balsamgau as a fief and later transferred him to the castle of Groitzsch in the Osterland, between the Pleisse, the Mulde, and the Elster, from which he took his name. Sometime between 1075 and 1080, he was forcibly exiled from Groitzsch by the regional nobility, who opposed his colonisation movements. He fled to the court of Vratislaus II of Bohemia in Prague. Under Vratislaus he rose to a position of influence at court and, as a favourite of the Emperor Henry IV, he supported Vratislaus for a crown in 1080. In 1085 married the king's daughter Judith, daughter of his third wife, Swiętoslawa (Svatana), a Pole. She brought him Budissin, that is, Upper Lusatia around Bautzen, and Nisani, the region around Dresden, as a dowry. She bore him his first son, Wiprecht, in 1087.