In 1365, just six years after beginning the Gothic extension of the Albertine choir, Rudolf IV disregarded St. Stephen's status as a mere parish church and presumptuously established a chapter of canons befitting a large cathedral. This move was only the first step in fulfilling Vienna's long-held desire to obtain its own diocese; in 1469, Emperor Frederick III prevailed upon Pope Paul II to grant Vienna its own bishop, to be appointed by the emperor. Despite long-standing resistance by the Bishops of Passau, who did not wish to lose control of the area, the Diocese of Vienna was canonically established 18 January 1469, with St. Stephen's Cathedral as its mother church. In 1722 during the reign of Karl VI, Pope Innocent XIII elevated the see to an archbishopric.