Columbia subject headings:
Harvard subject headings:
Olivares, Gaspar de Guzmán, conde-duque de, 1587-1645--Estate.
Spain--History--House of Austria, 1516-1700.
Princeton subject headings:
Guzmán family.
Nobility--Spain--History.
Olivares, Gaspar de Guzmán, conde-duque de, 1587-1645--Estate.
Spain--Biography.
Spain--History--House of Austria, 1516-1700.