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.
Around 1145, he formed a coalition with other Bohemian dukes, Conrad II of Znojmo, Vratislaus II of Brno, and Otto III of Olomouc, to challenge Jindřich (Henry) Zdík's authority as bishop of Olomouc and expel him from his position.