Beatriz of Portugal, Duchess of Viseu

Infanta Beatrice
Duchess of Viseu
Depiction of Infanta Beatriz in a 1678 portrait in the Convent of Beja
Born13 June 1430
Died30 September 1506 (aged 76)
SpouseInfante Fernando, Duke of Viseu
Issue
HouseAviz
FatherJohn, Constable of Portugal
MotherIsabella of Barcelos
SignatureInfanta Beatrice's signature

Infanta Beatriz of Portugal (13 June 1430 – 30 September 1506) was a Portuguese infanta, daughter of John, Constable of Portugal (fourth son of King John I of Portugal and his wife Philippa of Lancaster), and Isabella of Barcelos, a daughter of Afonso I, Duke of Braganza.