Afonso I, Duke of Braganza

Afonso I
Duke of Braganza
posthumous engraving; Carlos António Leoni
Tenure	30 December 1442 – 15 December 1461
Born	10 August 1377 Veiros, Estremoz, Alentejo, Portugal
Died	15 December 1461 (aged 84) Chaves, Trás-os-Montes, Portugal
Family	House of Braganza
Spouses	Beatriz Pereira de Alvim (m. 1400, d. 1415) Constance de Noronha
Issue Detail	Afonso, 1st Marquis of Valença Isabella, Lady of Reguengos de Monsaraz Fernando I, Duke of Braganza
Father	John I of Portugal
Mother	Inês Peres

Dom Afonso I of Braganza (Portuguese pronunciation: [ɐˈfõsu]; 10 August 1377 – 15 December 1461) was the first duke of Braganza and the eighth count of Barcelos. He founded the House of Braganza, the most powerful and wealthy dynasty in Portugal. His descendants became high-ranking nobles, imperial officials, and finally kings of Portugal and emperors of Brazil.