Columbia subject headings:
Harvard subject headings:
Christian saints--Italy--Congresses.
Europe--Church history--600-1500--Congresses.
Giacomo, della Marca, Saint, 1393 or 1394-1476--Congresses.
Princeton subject headings:
Church history--Middle Ages, 600-1500.
Europe--Church history--600-1500.
Giacomo, della Marca, Saint, 1393 or 1394-1476.