Philip IV of Spain (8 April 1605 – 17 September 1665), also called the Planet King, was King of Spain from 1621 to his death and (as Philip III) King of Portugal from 1621 to 1640. Philip IV was a ...

At 14, Mariana married her uncle, Spain’s King Philip IV, then 44. The theatrical portrait has been shown in the United States only once before, in New York in 1989. Philip IV was in trouble.

Philip IV was in trouble. Spain’s far-flung empire, arguably the world’s most powerful, had seriously wobbled in the 1640s — and so had the king’s family life. When the bloody Thirty Years' War that ...