The Marriage of Beatriz Pereira de Alvim …

Years: 1399 - 1399

The Marriage of Beatriz Pereira de Alvim and Afonso, First Duke of Bragança (c. 1399)

Around 1399, Beatriz Pereira de Alvim, daughter of Nuno Álvares Pereira, Portugal’s greatest military commander, married Afonso, the illegitimate son of King John I of Portugal. This marriage united two of the most powerful families in Portugal, setting the foundation for the House of Bragança, which would later play a pivotal role in Portuguese history.


Beatriz Pereira de Alvim: A Heiress of Great Wealth

  • Beatriz was the only child and heir of Nuno Álvares Pereira, the hero of the Battle of Aljubarrota (1385) and one of the wealthiest and most influential figures in Portugal.
  • Upon her marriage, she brought an enormous dowry, including vast landholdings, reinforcing her husband’s political and economic power.

Afonso of Bragança: Royal Illegitimacy and Noble Influence

  • Afonso of Bragança was the illegitimate son of King John I of Portugal, born to Inês Pires Esteves.
  • His father legitimized him through royal favor, granting him titles, land, and influence.
  • By 1442, Afonso became the first Duke of Bragança, establishing the most powerful noble house in Portugal.

Legacy of the Marriage: The House of Bragança

  • The union of Beatriz and Afonso created a dynasty that would eventually challenge royal authority and later ascend to the Portuguese throne.
  • Their descendants, the Braganças, would become rivals to the monarchy due to their vast wealth and autonomous power.
  • In 1640, a member of this lineage, John IV of Portugal, led the Restoration War against Spain and became King of Portugal, establishing the Bragança dynasty, which ruled until 1910.

The marriage of Beatriz Pereira de Alvim and Afonso of Bragança was a key moment in Portuguese aristocratic history, marking the beginning of one of the most powerful noble houses in Iberia.

 

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