In 1145, he joined the other territorial dukes of Bohemia, Conrad II of Znojmo, Vratislaus II of Brno, and Otto III of Olomouc, to attack Jindřich (Henry) Zdík, bishop of Olomouc, and chase him from his diocese.
In 1145, he united with other dukes of Bohemia, Conrad II of Znojmo, Vratislaus II of Brno, and Otto III of Olomouc, to confront Jindřich (Henry) Zdík, bishop of Olomouc, and remove him from his episcopal duties.