Columbia subject headings:
Kings and rulers, Medieval.
Monarchy--History.
Visits of state--History.
Harvard subject headings:
Diplomacy--History
Europe--Kings and rulers.
Europe--Politics and government--476-1492.
Visits of state--Europe--History.
Princeton subject headings:
Diplomacy--History.
Europe--Kings and rulers.
Europe--Politics and government--476-1492.
Visits of state--Europe--History.