In order to prevent the imminent revenge of the Duke it was decided to get rid of him: a false lawyer (brother of one of the Duke's doctors) was employed at the court of Wrocław, and slowly poisoned Henry IV.
În scopul de a preveni răzbunarea iminentă a Ducelui, acesta a decis să scape de el: un avocat fals (fratele unuia dintre medicii ducelui), a fost angajat la curtea de la Wroclaw, și l-a otrăvit treptat pe Henric.