causing severe vomiting and cleansing the body; but the assassin was not discovered, and this time put the poison in the knife used by Henry IV to cut his bread. The poison was finally detected, but it was too late to save the Duke. Henry IV died in the Catholic faith, deciding not to prosecute or punish his killers. This is a very long story of the Duke's death and only some elements are confirmed by other sources. Ottokar of Styria told the story in many details in agreement with that provided by the Kronika Zbrasławska. Other sources related that a chaplain named Aleksy, as a deputy of King Wenceslaus II of Bohemia had betrayed Henry IV's interests and tried to give the crown to the "King of Kalisz" Przemysł II. In this story the theft of the envoy to Rome was also mentioned, only the epilogue was a little different: here, the thief was killed by his own servants in the streets of Rome. Killers Following the version of Ottokar of Styria, should be sought among the Wrocław townspeople (just like Henry IV's father) two brothers, one of them was lawyer and the other doctor. The only two persons who could be identified as the brothers were John (who was an adviser of the Duchy and a lawyer) and Jakob (known as Magister, so probably a doctor), sons of one Goćwina, who was a doctor in the court of Henry III the White. They still in their posts at the time of Henry IV's death. It's assumed that they acted on behalf of Henry V the Fat, who wanted to obtain Kraków and with this the title of High Duke, but was not any evidence to support this. There is no other person who will take advantage of the Duke's death, and could be linked to the circumstances of the death of Henry IV. Henry IV's Testament According to the chroniclers, the dying Henry IV made two documents. One to the Wrocław church (which give the desired permissions to the Bishop to obtain the full sovereignty over the Duchy of Nysa–Otmuchów) and other politic (who regulated the issue of his inheritance). Under this will, he bequeathed the Duchy of Wrocław to Duke Henry III of Głogów, and Kraków -with the title of High Duke- to Przemysł II. In case of the death of one of the princes, the other