Burkhard von Weisbriach was an ecclesiastical principality whose capital was the former city of what?
Archbishopric of Salzburg The Prince-Archbishopric of Salzburg (German: "Fürsterzbistum Salzburg" ) was an ecclesiastical principality and state of the Holy Roman Empire. It comprised the secular territory ruled by the Archbishops of Salzburg, as distinguished from the much larger Catholic diocese founded in 739 by Saint Boniface in the German stem duchy of Bavaria. The capital of the archbishopric was Salzburg, the former Roman city of "Iuvavum ".
Rhenish Franconia Rhenish Franconia (German: "Rheinfranken" ) or Western Franconia ("Westfranken") denotes the western half of the central German stem duchy of Franconia in the 10th and 11th century, with its residence at the city of Worms. The territory located on the banks of Rhine river roughly corresponded with the present-day state of Hesse and the adjacent Palatinate region in the south.