Columbia subject headings:
Catholic Church. Archdiocese of Cologne (Germany)--History.
Cologne (Germany)--Church history.
Cologne (Germany)--History.
Engelbert, Saint, Archbishop of Cologne, approximately 1185-1225.
Harvard subject headings:
Bishops--Germany--Cologne--Biography.
Catholic Church--Bishops--Biography.
Engelbert I, Abp. of Cologne, 1185-1225.
Princeton subject headings: