Columbia subject headings:
Harvard subject headings:
Church history--Middle Ages, 600-1500
Freed persons (Roman law)
Freed persons--History.
Patron and client (Roman law)
Patron and client.
Patronage, Ecclesiastical--History.
Princeton subject headings:
Europe--Church history--600-1500.
Patron and client--Europe.
Patronage, Ecclesiastical--Europe.
Peasants--Europe--Social conditions.