Tenure 1373–1374 Name Beatrice, of Religion Roman Catholicism | Mother Ines de Castro Father Peter I Children Eleanor of Alburquerque | |
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Issue Fernando Sanchez
Eleanor, Queen of Aragon House House of Burgundy-Portugal (by birth)
House of Burgundy-Spain (by marriage) Died July 5, 1381, Ledesma, Salamanca, Spain Spouse Sancho Alfonso, 1st Count of Alburquerque (m. 1373) Parents Peter I of Portugal, Ines de Castro Grandchildren Eleanor of Aragon, Queen of Portugal Similar People Ines de Castro, Peter I of Portugal, Ferdinand I of Aragon, Eleanor of Aragon - Queen of, Beatrice of Castile |
Infanta Beatrice of Portugal ([biɐˈtɾiʃ]; Portuguese: Beatriz; c.1347/51–1381) was the daughter of Portuguese King Peter I and a Galician noblewoman called Inês de Castro.

Life
Beatrice was born in Coimbra around the period of 1347–1351. Beatrice's entitlement to be considered an Infanta (Princess) of Portugal is debatable. Some historians consider her a natural daughter of Peter I, so the title Infanta of Portugal could never be attributed to her. Other opinions assert that the death of Inês de Castro was ordered by Peter's father King Afonso IV of Portugal; after inheriting the throne, the Prince admitted that he had married Inês secretly, and she was thus a lawful Queen of Portugal.
Beatrice became Countess of Alburquerque when she married Sancho Alfonso, 1st Count of Alburquerque (1373). They had two children: Don Fernando Sánchez, 2nd Count of Alburquerque, and Doña Eleanor of Alburquerque, who married Ferdinand I of Aragon. She died in 1381.