Columbia subject headings:
Catholic Church. Diocese of Speyer (Germany)--Bishops.
Catholic Church. Diocese of Worms (Germany)--Bishops.
Germany--History--Saxon House, 919-1024.
Germany--Kings and rulers--Religious aspects.
Harvard subject headings:
Catholic Church. Diocese of Speyer (Germany)--Bishops.
Catholic Church. Diocese of Worms (Germany)--Bishops.
Germany--History--Saxon House, 919-1024.
Germany--Kings and rulers--Religious aspects.
Princeton subject headings: