Archduchess Joan of Austria (1535–1573)
| Joanna | |
|---|---|
| Princess of Portugal | |
Portrait by Sánchez Coello, 1557
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| Born |
24 June 1535 Madrid |
| Died | 7 September 1573 (aged 38) El Escorial |
| Burial | Convent of Las Descalzas Reales |
| Spouse | John Manuel, Prince of Portugal |
| Issue | Sebastian of Portugal |
| House | Habsburg |
| Father | Charles V, Holy Roman Emperor |
| Mother | Isabella of Portugal |
| Religion | Roman Catholic |
Joanna of Austria (in Castilian, doña Juana de Austria; in Portuguese, Dona Joana de Áustria, 24 June 1535 – 7 September 1573) was Infanta of Spain and Archduchess of Austria by birth and Princess of Portugal by marriage. She was the mother of Sebastian of Portugal, and later regent of Spain for her brother, Philip II of Spain (1554-1559).
Born in the royal court of Madrid, Joanna was the daughter of Charles V, Holy Roman Emperor (who was the first king of united Spain, officially King of Aragon and King of Castile) and his consort Isabella of Portugal. Therefore, her paternal grandparents were Philip of Castile and Juana of Castile, and her maternal grandparents were Manuel I of Portugal and Maria of Aragon .
She was also the sister of King Philip II of Spain and Maria, Holy Roman Empress. She served as regent to Philip during his trip to England to marry Mary I (1554-1556), and from 1556 to 1559.
Among others, Joanna held the titles of Archduchess of Austria, Infanta of Castile and of Aragon, and princess of Burgundy.
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