Afonso I, Duke of Braganza Afonso I, Duke of Braganza Dom Afonso I of Braganza (; 10 August 1377 – 15 December 1461) was the first Duke of Braganza and the eighth Count of Barcelos. He would start a dynasty, the House of Braganza, that would end up being the most powerful and wealthy in all of Portugal. His descendants would go on to become high-ranking nobles, imperial officials, and even the Kings of Portugal and the Emperors of Brazil. Historians believe he was born in Veiros, Estremoz, Alentejo, as a natural son of Portuguese King John I and Inês Peres. He married the heiress
Jaime, Duke of Braganza had married Leonor Pérez de Guzmán, daughter of Juan Alfonso Pérez de Guzmán, 3rd Duke of Medina Sidonia. They had two children before she was murdered in 1512. In 1520, Jaime I married Joana of Mendoça, daughter of Diogo of Mendonça, High-Alcaide of Mourão. They had eight children, most of whom saw successful lives. Jaime, Duke of Braganza Jaime of Braganza (1479 – 20 September 1532) was the 4th Duke of Braganza and the 2nd Duke of Guimarães, among other titles. He is known for reviving the wealth and power of the House of Braganza which had been confiscated by