Boleslaus I

Type: Person

As of November 2026, Boleslaus I has been mentioned in one podcast episode on Last Podcast On The Left (Dec 2025). Brother of Wenceslaus I, involved in his murder, discussed in the episode.

Boleslaus I, a member of the Přemyslid dynasty, was ruler of the Duchy of Bohemia from 935 until his death in 972. He is notorious for the murder of his elder brother Wenceslaus I, through which he became duke. As duke, his decisions surrounding his dynasty led to the Roman Catholic conversion of Poland, which in turn led to the recognition of the Polish state by the papacy. This recognition helped to define medieval Poland as one of the first modern states.