Columbia subject headings:
Feudalism--Italy--History.
Middle Ages.
Nobility--Europe--Genealogy.
Nobility--Europe--History.
Patronage, Ecclesiastical--Italy--History.
Harvard subject headings:
Feudalism--Italy--History.
Italy--Church history--476-1400.
Middle Ages
Nobility--Europe--Genealogy
Nobility--Europe--History
Patronage, Ecclesiastical--Italy--History.
Tellenbach, Gerd G.
Princeton subject headings:
Feudalism--Italy--History.
Nobility--Europe--Genealogy.
Nobility--Europe--History.
Patronage, Ecclesiastical--Italy--History.