Isabel of Barcelos

Isabel
Lady of Reguengos de Monsaraz, Colares and Belas
Isabel in a 1534 miniature in the Genealogy of D. Manuel Pereira, 3rd Count of Feira
Born(1402-10-00)October 1402
Barcelos
Died26 October 1466(1466-10-26) (aged 63–64)
Arévalo
Burial
SpouseJohn, Constable of Portugal
HouseBraganza
FatherAfonso I, Duke of Braganza
MotherBeatriz Pereira de Alvim

Isabel of Barcelos (October 1402 – 26 October 1466), also known as Isabel of Braganza, was a lady of the Portuguese nobility during the Late Middle Ages. She was the daughter of Afonso I, Duke of Braganza and Beatriz Pereira de Alvim, and she married Infante John, Lord of Reguengos de Monsaraz, her half-uncle, son of John I of Portugal.