Columbia subject headings:
Harvard subject headings:
Cardinals--Italy--Biography
Council of Trent (1545-1563 : Trento, Italy)
Gonzaga family.
Gonzaga, Ercole, cardinale, 1505-1563.
Mantua (Italy)--Social life and customs.
Princeton subject headings:
Council of Trent (1545-1563 : Trento, Italy)
Gonzaga family--Biography.
Gonzaga, Ercole, 1505-1563.