House of Braganza Luís, as D. Pedro V had no children. D. Luís I was succeeded in 1889 by his son D. Carlos I. Carlos I's popularity dramatically declined after an unfavorable deal from an incident known as the British Ultimatum, whereby the Portuguese Empire ceded its claim to territories (known as the "Pink Map") between Portuguese West Africa and Portuguese East Africa to the British. Pursuant to his unpopularity, the monarchy became increasingly unpopular in the country. King Carlos I was assassinated in 1908 together with his eldest son, D. Luís Filipe, Prince Royal of Portugal and Duke of Braganza, by republicans.
Duarte Nuno, Duke of Braganza Nuno married Princess Maria Francisca of Orléans-Braganza, daughter of Pedro de Alcântara, Prince of Grão-Pará. Their marriage reconciled two branches of the House of Braganza, in two different ways, reuniting the Portuguese and Brazilian Brigantine houses and specifically reuniting the Miguelist and Liberal Braganzas, which had been estranged since 1828, when the War of Two Brothers was waged between King-Emperor Pedro IV & I, founder of the Liberal Braganzas, and King Miguel I, founder of the Miguelist Braganzas. The couple had three sons, the eldest of whom is Duarte Pio, Duke of Braganza, the current pretender to the defunct Portuguese