Henry Preussel participated in Frederick the Quarrelsome's campaigns against the Kingdom of Hungary, still as an opponent to Béla IV, however later entered the service of the Hungarian king.
[2] The reconciliation of Stephen and his father proved to be only temporary around 1263–1264, and the increasing tensions improved the military strategic importance of the Buda Castle, which was recently built by Béla IV.
The King decided to suspend the town privileges of Buda, including the free election of the burghers' magistrate.
As a result, Béla IV dismissed villicus Peter after 11 September 1264 and appointed Henry Preussel as the first rector of Buda, perhaps under Lombard influence.
According to Jans der Enikel's Weltchronik, Preussel was stabbed with a sword himself by Duke Stephen, while the Austrian knight begged for his life.