Columbia subject headings:
Aristocracy (Social class)--Europe--Congresses.
Christian life--History--Middle Ages, 600-1500--Congresses.
Conversion--Catholic Church--Congresses.
Saints--Congresses.
Harvard subject headings:
Aristocracy (Social class)--Europe--Congresses.
Christian life--History--Middle Ages, 600-1500--Congresses.
Conversion--Catholic Church--Congresses.
Saints--Congresses.
Princeton subject headings:
Aristocracy (Social class)--Europe--Congresses.
Christian life--History--Middle Ages, 600-1500--Congresses.
Conversion--Catholic Church--Congresses.
Saints--Congresses.