Beatriz Pereira Alvim

Beatriz Pereira de Alvim (1380 – 1415) was the daughter of Nuno Álvares Pereira and his wife Leonor de Alvim and first Duchess of Braganza, married on November 8th, 1401 to Afonso, Duke of Braganza. Technically, she was never a Duchess since she died before the actual granting of the title.

* Afonso of Braganza (1400-1460), 4th Count of Ourém and 1st Marquis of Valença, had a natural son from "Dona" Brites de Sousa (some say they secretly married). His issue took the name "de Portugal";
* Isabella of Braganza (1402-1465), married her uncle Infante João, Lord of Reguengos, son of John I of Portugal;
* Fernando I, Duke of Braganza (1403-1478), succeeded his father as second Duke of Braganza.

Descendents

Through her daughter Isabella, Beatriz is an ancester of many different monarchs. Her great granddaughter was Isabella I of Castile, Isabella was the mother of Maria of Aragon, Catherine of Aragon and Joanna of Castile. Maria was the mother of John III of Portugal and Isabella of Portugal, Isabella's son was Philip II of Spain. Joanna of Castile was the mother of Charles V, Holy Roman Emperor who married Isabella of Portugal and was the mother of Maria of Spain and Joan of Spain as well as Philip. Catherine of Aragon married Henry VIII of England and was the mother of Mary I of England