Columbia subject headings:
Charles I, King of England, 1600-1649.
Great Britain--Foreign relations--1603-1625.
Great Britain--Foreign relations--Spain.
Spain--Foreign relations--Great Britain.
Harvard subject headings:
British--Spain--History--17th century.
Charles I, King of England, 1600-1649
Charles I, King of England, 1600-1649--Relations with Spaniards.
Charles I, King of England, 1600-1649--Travel--Spain.
Great Britain--Foreign relations--1603-1625.
Great Britain--Foreign relations--Spain.
Marriages of royalty and nobility--Political aspects--Great Britain.
Marriages of royalty and nobility--Political aspects--Spain.
Spain--Foreign relations--1621-1665.
Spain--Foreign relations--Great Britain
Princeton subject headings:
British--Spain--History--17th century.
Charles I, King of England, 1600-1649--Relations with Spaniards.
Charles I, King of England, 1600-1649--Travel--Spain.
Great Britain--Foreign relations--1603-1625.
Great Britain--Foreign relations--Spain.
Marriages of royalty and nobility--Political aspects--Great Britain.
Marriages of royalty and nobility--Political aspects--Spain.
Spain--Foreign relations--1621-1665.
Spain--Foreign relations--Great Britain.