Columbia subject headings:
Charles I, King of Naples, 1226-1285.
Naples (Kingdom)--History--Anjou dynasty, 1268-1442.
Sicily (Italy)--History--1194-1282.
Harvard subject headings:
Charles I, King of Naples, 1226-1285.
Mediterranean Region--History--476-1517.
Naples (Kingdom)--History--Anjou dynasty, 1268-1442.
Princeton subject headings:
Charles I, King of Naples, 1226-1285--Congresses.
Commerce--History--Medieval, 500-1500.
Mediterranean Region--History--476-1517--Congresses.