Columbia subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574.
Nobility--Italy--Biography.
Siena (Italy)--History--1355-1557.
Harvard subject headings:
Charles V, Holy Roman Emperor, 1500-1558
Cosimo I, Grand-Duke of Tuscany, 1519-1574
Siena (Italy)--History--1355-1557.
Princeton subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574.
Nobility--Italy--Biography.
Siena (Italy)--History--1355-1557.