Columbia subject headings:
Harvard subject headings:
Aristocracy (Political science)
Aristocracy (Social class)
Aristocracy (Social class)--France.
Knights and knighthood--France--History--Sources.
Nobility--France--History--Sources.
Princeton subject headings:
France--Civilization--1000-1328.
France--History--Medieval period, 987-1515.
French literature--To 1500--History and criticism.
Nobility--France--History.
Social structure--France--History.