Henry I the Bearded
At the time of his father's death in 1230, Mieszko II and his younger brother Władysław were still minors; for this, the regency of the Duchy was taken by their mother and Henry I the Bearded, Duke of Wrocław. Following her late husband's politics, the Dowager Duchess Viola led a policy of close cooperation with the Church. In 1233, and probably with the consent of the Duke of Wrocław, was issued a bull by Pope Gregory IX, under which the tutelage of the young Dukes was removed from their mother and granted to the Archbishop of Gniezno and the Bishops of Wroclaw and Olomouc. A year later, to calm the erupted rebellion against this decision, Henry I the Bearded give Kalisz and Wieluń to Casimir I's sons, taking the full control over Opole-Racibórz, but without denying their hereditary rights.