Infanta Maria, Marchioness of Tortosa

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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

Maria of Portugal (pron. IPA: [mɐ'ɾiɐ]) was a Portuguese infanta, first daughter of King Peter I of Portugal and his Queen consort Constance of Peñafiel.

Maria was born in Évora on April 6, 1342. In 1354 she married Infante Fernando of Aragon, Marquis of Tortosa, son of Aragonese King Alfonso IV.

Fernando was murdered by his half-brother Peter IV of Aragon in 1363. Maria then returned to Portugal where she died in the city of Aveiro in a year after 1363. She is buried in the Convent of Saint Claire of Coimbra.