House of Braganza vassals, alongside numerous churches, orders, and institutions under its patronage. In 1603, Teodósio II married Ana de Velasco y Girón, daughter of Castilian Juan Fernández de Velasco, 5th Duke of Frías, and had four children with her. The Duke's first son and successor, João II, raise the House of Braganza to new heights of power, having launched the Portuguese Restoration War and been acclaimed King João IV of Portugal, thus installing the House as the ruling dynasty of Portugal. Teodósio II's second son, Duarte of Braganza, was made Lord of Vila do Conde and became a diplomat, serving at the
House of Braganza of Marquis of Vila Viçosa and Count of Neiva. Fernando I's children, by his wife, Joana de Castro, Lady of Cadaval, continued to enlarge the influence of the House of Braganza. Of his nine children, all six who survived to adulthood established themselves either through positions or marriages, though the actions of King João II would seek to weaken their influence. Fernando I's first son and successor, Fernando II, was initially a bright and popular nobleman, but his conflict with King João II would see his and the House's downfall. His second son, João of Braganza, 1st Marquis of Montemor-o-Novo,