|Duke of Bohemia|
|Reign||January – 6 September 1092|
|Died||6 September 1092 (aged c. 57)|
|Spouse||Wirpirk of Tengling|
|Mother||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. He did not succeed as king, because his brother had only been elevated to the royal dignity for life by the Emperor Henry IV without the establishment of a hereditary monarchy.
By his marriage to Wirpirk of Tengling, he had two children:
- 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 1112
He was succeeded as duke by his nephew Bretislaus.