Columbia subject headings:
Harvard subject headings:
Charles I, King of England, 1600-1649--Travel--Spain--Madrid.
Europe--Foreign relations--17th century--Sources.
Europe--History--1517-1648--Sources.
Maria Anna, consort of Ferdinand III, Holy Roman Emperor, 1606-1646
Marriages of royalty and nobility--Europe--History--17th century.
Princes--Europe--Biography.
Princeton subject headings:
Charles I, King of England, 1600-1649.
Great Britain--Foreign relations--1603-1625.
Great Britain--Foreign relations--Spain.
Maria Anna, consort of Ferdinand III, Holy Roman Emperor, 1606-1646.
Marriages of royalty and nobility--History--17th century.
Spain--Foreign relations--Great Britain.