In 1192, Blessed Oleslaus, also known as Boleslaus, became the Bishop of Vác and focused on enhancing religious practices and clergy quality in his diocese. He faced challenges from clerics who opposed his reforms and reported him to Pope Celestine III, claiming he was too strict regarding tithes. Despite this, Boleslaus maintained his commitment to moral integrity and clergy accountability. He organized annual Diocesan Synods to address these issues, leading to the Pope's support for his initiatives. The text also references historical conflicts that affected the Vác Church, including a notable incident in 1198 involving King Emeric.