Maria Anna of Spain (German: Maria Anna von Spanien; 18 August 1606 – 13 May 1646), was by birth Infanta of Spain and by marriage Holy Roman Empress and Queen of Hungary and Bohemia as the wife of Ferdinand III, Holy Roman Emperor. Infanta Maria Anna of Spain was born in the Palace of El Escorial, near Madrid, on 18 August 1606 as the fourth child and third (but second surviving) daughter of King Philip III of Spain and his wife Margaret of Austria, Archduchess of the Inner Austrian branch of the House of Habsburg. At the end of 1626 Maria Anna was betrothed to the younger brother of her first fiance, Ferdinand, new heir of Emperor Ferdinand II. Maria Anna had left Madrid for Vienna in December 1629. The travel took more than a year. On 26 January 1631 she arrived in Trieste, where she met Archduke Leopold Wilhelm of Austria, her future brother-in-law, who escort the Infanta to the Vienna court. After his father's death on 15 February 1637, Ferdinand became Holy Roman Emperor under the name of Ferdinand III and sovereign King of Hungary and Bohemia. After him, his wife received the titles of Holy Roman Empress and sovereign Queen.

Read more: Wikipedia