1503 - Isabella of Portugal, queen of Spain and empress of Germany (d. 1539)

Famous Birthday on this Day in History

Isabella of Portugal ( 24 October 1503 – 1 May 1539) was the daughter of Manuel I of Portugal and Maria of Aragon. By her marriage to Charles V, Holy Roman Emperor, Isabella was also Holy Roman Empress and Queen consort of Aragon and Castile.

Isabel was the second child and eldest daughter of Manuel I of Portugal and his second wife, Infanta Maria of Castile and Aragon. She was named after her maternal grandmother, Isabella I of Castile and her aunt Isabella, Princess of Asturias, who had been her father's first wife.

Through her father, she was a granddaughter of Infante Ferdinand, Duke of Viseu (the second son of king Edward of Portugal and brother of Afonso V of Portugal) and Infanta Beatrice, the daughter of Infante João, Lord of Reguengos (brother of king Edward). Through her mother she was a granddaughter of Isabella I of Castile and Ferdinand II of Aragon.

Isabel was second-in-line to the throne until the birth of her brother Louis in 1505. However, as the oldest daughter of Manuel I of Portugal, she was a rather attractive party. She married her first cousin, Charles V, Holy Roman Emperor, the son of Joanna of Castile and Philip the Handsome, Duke of Burgundy, who as Holy Roman Emperor, King of Aragon and Castile, Archduke of the Habsburg dominions, titular Duke of Burgundy, and ruler of the Netherlands and the Spanish empire in the Americas and the Mediterranean and Italy was one of the most powerful men of his time.