House of Braganza and repudiated the liberal constitution granted by D. João VI, trying to establish an absolute monarchy. In 1828, Maria II was forced into exile by her uncle, the new King Miguel I. Her father D. Pedro IV of Portugal returned from Brazil, launched a successful military campaign, from the Azores, against Miguel I. He finally defeated and exiled Miguel I in 1834. Though exiled, Miguel would not give up his claim to the throne and would establish the Miguelist branch of the House of Braganza. The strategic marriages of his children to the various royal houses of Europe would earn
Teodósio I, Duke of Braganza Teodósio I, Duke of Braganza Dom Teodósio I of Braganza (; 1510 – 22 September 1563) was the 5th Duke of Braganza, among other titles. He is known for ceding the title of Duke of Guimarães to Infante Duarte of Aviz, alongside some of the wealth and properties of the House of Braganza. The Duke Teodósio I was an educated and refined man, a typical renaissance prince. He loved painting and sculpture. In 1542, he married his 1st cousin (1513–1558), daughter of his uncle Dinis, and had John I of Braganza. Their child, João I succeeded him as 6th Duke