Infanta Isabel of Portugal

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Infanta Isabel of Portugal (1428-1496) was Queen consort of Castile and Leon. She was the mother of Queen Isabella "the Catholic".

Isabel de Portugal was born as a scion of a collateral branch of the Aviz dynasty that ruled in Portugal since 1385. Her father was Infante dom Joao de Portugal, the youngest surviving son of John I of Portugal, and her mother was Isabella de Braganza, a high noblewoman of some royal blood, being daughter of the 1st Duke of Braganza. Isabella's father held some lordships, but was not among the forefront of the Portuguese royal house, there being a multitude of powerful dukes ahead of him.

She was married to the elderly king John II of Castile as his second wife.

Her children were:

• Infanta Isabel, the future Queen regnant.

• Alfonso, Prince of Asturias (1453-1468) who rebelled against his half-brother, Henry IV of Castile He died of a sickness, probably the plague.^{[citation needed]}

Preceded by Maria of Aragon

Queen Consort of Castile and Leon 1447–1454

Succeeded by Joan of Portugal

ca:Isabel de Portugal i de Bragança

es:Isabel de Portugal, reina de Castilla fr:Isabelle de Portugal (1428-1496) it:Isabella del Portogallo (1428-1496) pl:Izabela Portugalska pt:Isabel de Portugal, Rainha de Castela