Columbia subject headings:
Catholic Church--Foreign relations--Spain.
Gregory XIII, Pope, 1502-1585.
Papal nuncios--Spain.
Sega, Felipe, 1537-1596.
Spain--Foreign relations--Catholic Church.
Harvard subject headings:
Catholic Church--Foreign relations--Spain.
Gregory XIII, Pope, 1502-1585.
Papal nuncios--Spain.
Sega, Felipe, 1537-1596.
Spain--Foreign relations--Catholic Church.
Princeton subject headings:
Catholic Church--Foreign relations--Spain.
Church and state--Spain--History--16th century.
Gregory XIII, Pope, 1502-1585.
Papal nuncios--Spain--History--16th century.
Philip II, King of Spain, 1527-1598.
Sega, Felipe, 1537-1596.
Spain--Church history--16th century.
Spain--Foreign relations--Catholic Church.
Spain--Politics and government--1556-1598.