Editing Henry Probus (section)

===Homage to King Rudolph I in 1280===
Upon the death of his Bohemian ally, Henry IV reconciled with King Rudolph I and in 1280 went to his [[Archduchy of Austria|Austrian]] court in [[Vienna]], where Henry tried to obtain for himself the [[History of Poland during the Piast dynasty|Polish]] royal crown.

Some historians believed that the Duke of Wrocław took the opportunity from his [[Homage (medieval)|homage]] to King Rudolph I to expose him the possibility of becoming King of Poland. At that time, he also made an alliance with Duke Władysław of Opole, who promised to help Henry IV with the condition that his daughter (perhaps called Constance), who had recently married Henry IV, was crowned with him as Polish queen if he would obtain the royal investiture.
[[File:POL województwo dolnośląskie COA.svg|thumb|right|150px|The [[Coat of arms of Silesia|black crownless eagle]] of the Silesian Piasts]]