Note: Not all incumbents of the
Bremian See were
imperially invested princely power as Prince-Archbishops and not all were papally confirmed as bishops. The respective
incumbents of Bremen's see bore the following titles:
Administrator of the Prince-Archbishopric of Bremen from 1568 to 1645. Lacking canon-law prerequisites the incumbent of the See would officially only hold the title administrator (but nevertheless colloquially referred to as Prince-Archbishop). All administrators were Lutherans, except of one, Leopold Wilhelm, Archduke of Austria, who was Catholic.
The last, but only provisional incumbent of the
See, Franz Wilhelm von Wartenberg, therefore bore the title
Vicar Apostolic (1645-1648)