Burkhard von Weisbriach was an ecclesiastical principality whose capital was the former city of what?
Burkhard Weisbriach: Burkhard von Weisbriach (died 1466) was a German Roman Catholic cardinal and Prince-Archbishop of Salzburg from 1461 until his death. Archbishopric of Salzburg: The Prince-Archbishopric of Salzburg (German: "Fürsterzbistum Salzburg" ) was an ecclesiastical principality and state of the Holy Roman Empire. Archbishopric of Salzburg:  The capital of the archbishopric was Salzburg, the former Roman city of "Iuvavum ".
Iuvavum