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Isabel of Viseu

Infanta Isabel
Duchess of Braganza
Isabel de Viseu (c. 1645).png
Isabel of Viseu in a c. 1645 genealogy of the Kings of Portugal (National Library of Portugal).
Born 1459
Died 1521
Spouse Fernando II, Duke of Braganza
Issue Jaime, Duke of Braganza
Dinis of Portugal
House House of Aviz
House of Braganza
Father Infante Fernando, Duke of Viseu
Mother Beatrice of Portugal

Isabel of Viseu (1459–1521) was a daughter of Infante Fernando, Duke of Viseu and his wife and cousin Infanta Beatrice, Duchess of Viseu. She was a member of the House of Aviz and later, House of Braganza.

She was the sister of Manuel I of Portugal and Leonor of Viseu. Her maternal grandparents were Infante João of Portugal and his wife Isabella of Barcelos. Her paternal grandparents were Edward of Portugal and Leonor of Aragon.

Isabel's cousin was Isabella I of Castile, wife of Ferdinand II of Aragon and mother of the English queen, Catherine of Aragon.

She married Fernando II, Duke of Braganza, a marriage that would later end in tragedy. This was Fernando's second marriage, after the death of his first wife, Leonor de Menezes. Leonor had not borne any children, so Isabel needed to deliver a son.

Isabel and Fernando had four children:

Even at a young age, John II of Portugal was not popular among the peers of the kingdom since he was immune to external influence and appeared to despise intrigue. The nobles (including particularly Isabela's husband, the Duke of Braganza) were afraid of his future policies as king. Events proved them right.

After the official accession to the throne in 1481, John II took a series of measures to curtail the overgrown power of his aristocracy and to concentrate power on himself. Immediately, the nobles started to conspire; John II did nothing but observe. Letters of complaint and pleas to intervene were exchanged between the Duke of Braganza and Queen Isabella I of Castile. In 1483, this correspondence was intercepted by royal spies. The House of Braganza was outlawed, their lands confiscated and Isabel's husband executed in Évora.


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