Columbia subject headings:
Byzantine Empire--Social life and customs.
Nobility--Byzantine Empire.
Harvard subject headings:
Aristocracy (Social class)--Byzantine Empire.
Byzantine Empire--History--1081-1453.
Byzantine Empire--History--527-1081.
Nobility--Byzantine Empire--History.
Princeton subject headings:
Byzantine Empire--History--1081-1453.
Byzantine Empire--History--527-1081.
Nobility--Byzantine Empire--History.