House of Braganza of Alcácer Quibir, alongside the King and his uncle, Jaime of Braganza, at the age of ten. Teodósio II later pledged his allegiance and became a faithful countryman to the Philippine Dynasty, having even defended Lisbon against King Philip I's rival claimant to the throne, António, Prior of Crato, who had been acclaimed, by his supporters, as King António I of Portugal. In recognition for his military prowess, Teodósio II was made Constable of Portugal. The Duke's support and service to the Philippine Dynasty, earned the Braganzas more lands and titles and, by 1640, the House had amassed around 80,000
House of Braganza Afonso quickly became the King's preferred advisor. On 30 December 1442, the Duke of Coimbra, still the King's regent and thus acting in his name, created Afonso as the Duke of Braganza, as a gesture of good will and reconciliation between the two brothers. Afonso's elevation to the dukedom, the highest level of nobility, marked the foundation of the House of Braganza, which was to become a key family in Portuguese history. As a result of the hard work and success of Afonso I, his children all secured successful positions and lived privileged lives. Afonso I's first son, Afonso of