Columbia subject headings:
Harvard subject headings:
Alexander VI, Pope, 1431-1503--Family.
Alfonso I d'Este, Duke of Ferrara, 1476-1534.
Borgia, Lucrezia, 1480-1519.
Ferrara (Italy)--History--16th century.
Italy--History--1492-1559.
Nobility--Italy--Papal States--Biography.
Princeton subject headings:
Alfonso I d'Este, Duke of Ferrara, 1476-1534.
Borgia, Lucrezia, 1480-1519.
Ferrara (Italy)--History--16th century.