Background
He was the brother and successor of Vratislaus II (died 14 January 1092) as the third son of Bretislaus I and Judith of Schweinfurt.
He was the brother and successor of Vratislaus II (died 14 January 1092) as the third son of Bretislaus I and Judith of Schweinfurt.
Before he became duke of Bohemia, he had long ruled over Moravia, as junior sons typically did, as duke of Brno and Znojmo (since 1054). Oldřich (or Ulrich), prince of Brno from 1092 to 1097 and from 1100 to his death on 11 November 1113
Luitpold, prince of Znojmo from 1092 to 1097 and from 1100 to his death on 15 March 1113.