Columbia subject headings:
Conspiracies--Portugal--History--17th century.
John IV, King of Portugal, 1640-1656.
Portugal--History--John IV, 1640-1656.
Harvard subject headings:
Bragança, House of.
Conspiracies--Portugal--History--17th century.
Conspiracy--Political aspects--Portugal--17th century.
John IV, King of Portugal, 1604-1656.
Portugal--History--John IV, 1640-1656.
Vila Real, House of.
Princeton subject headings:
Conspiracies--Portugal--History--17th century.
Conspiracy--Political aspects--Portugal--17th century.
John IV, King of Portugal, 1604-1656.
Portugal--History--John IV, 1640-1656.