House of Braganza rebellion. The eighth Duke of Braganza, D. João II of Braganza, had inherited the claim of his grandmother, Infanta Catarina of Portugal, and the remoter claim through of his grandfather João I of Braganza. Because of his claims, the discontent Portuguese nobility asked João II to lead their restoration as their king. According to court historians, D. João II was a modest man without particular ambitions to the crown. Legend says that his wife, Dona Luisa de Guzmán, daughter of the duke of Medina-Sidonia, urged him to accept the offer, saying "I'd rather be queen for one day than duchess
Fernando II, Duke of Braganza focused on diminishing the powers of the two most powerful noble houses in the kingdom, House of Beja and Viseu and the House of Braganza. King John II accused his first cousin, Diogo I of Beja and Viseu (brother-in-law of Fernando II), of high treason and had him brutally executed. Soon after, the King also accused his second half-cousin, Fernando II of Braganza, of high treason and had him executed at Évora in 1483. Afterwards, the assets of the House of Braganza were confiscated and the family fled to Castile. The family returned in 1498 and had all their property