Columbia subject headings:
Aristocracy (Social class)--Ireland--History.
Ireland--Kings and rulers.
Nobility--Ireland--History.
Harvard subject headings:
Aristocracy (Social class)--Ireland--History.
Ireland--Kings and rulers.
Nobility--Ireland--History.
Princeton subject headings:
Aristocracy (Social class)--Ireland--History.
Ireland--Kings and rulers.
Nobility--Ireland--History.