Columbia subject headings:
Harvard subject headings:
Martino I, King of Sicily, 1374-1409.
Sicily (Italy)--History--1282-1409
Sicily (Italy)--History--1282-1409--Sources.
Sicily (Italy)--Kings and rulers--Biography.
Princeton subject headings:
Martino I, King of Sicily, 1374-1409.
Sicily (Italy)--History--1282-1409.
Sicily (Italy)--Kings and rulers--Biography.