Infanta Beatriz, Countess of Alburquerque

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For other uses of this term, see Beatrice of Portugal (disambiguation).

Portuguese Royalty
House of Burgundy

Afonso Henriques (Afonso I)
Children include Infanta Urraca, Queen of Léon Infante Sancho (future Sancho I) Infanta Teresa, Countess of Flanders
Sancho I
Children include Infanta Teresa, Queen of Castile Infanta Sancha Infanta Constança Infante Afonso (future Afonso II) Infante Pedro, Count of Urgell Infante Fernando, Count of Flanders Infanta Branca, Lady of Guadalajara Infanta Berengária, Queen of Denmark Infanta Mafalda, Queen of Castile
Afonso II
Children include Infante Sancho (future Sancho II) Infante Afonso, Count of Boulogne (future Afonso III) Infanta Leonor, Queen of Denmark Infante Fernando, Lord of Serpa
Sancho II
Afonso III
Children include Infanta Branca Infante Dinis (future Denis I) Infante Afonso, Lord of Portalegre Infanta Maria Infanta Sancha
Denis
Children include Infanta Constança, Queen of Castile Infante Afonso (future Afonso IV)
Afonso IV
Children include Infanta Maria, Queen of Castile Infante Pedro (future Peter I) Infanta Leonor, Queen of Aragon
Peter I
Children include Infanta Maria, Marchioness of Tortosa Infante Fernando (future Ferdinand I) Infanta Beatriz, Countess of Alburquerque Infante João, Duke of Valencia de Campos Infante Dinis, Lord of Cifuentes John, Grand Master of the Order of Aviz (future John I) (natural son)
Ferdinand I
Children include Infanta Beatrice, Queen of Castile and Leon (future Beatrice I of Portugal)
Beatrice (disputed queen)
Children include Miguel of Trastámara

Beatrice of Portugal (pron. IPA: [biɐ'tɾiʃ]) was the daughter of Portuguese King Peter I and a Castilian noblewoman called Inês de Castro that had arrived in Portugal as a maid of princess Constance of Castile, recently married to Pedro I (Heir Prince at the time).

Beatrice was born in Coimbra around the period of 1347-1351 and she became Countess of Alburquerque when she married Sancho, Count of Alburquerque. She died in 1381.

Beatrice's entitlement to be considered an Infanta 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 refer that after the death of Inês de Castro, ordered by Pedro's father King Afonso IV of Portugal, the Prince after inheriting the throne admitted that he had married Inês secretly, and because of that she was a lawful Queen of Portugal.

Of Inês de Castro, Peter I had two sons and a daughter: