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.
House of Braganza of 1826 stated that ""The Reigning Dynasty of the Most Serene House of Braganza Shall Continue in the Person of Lady Princess Maria da Glória, by the Abdication and Cession of Her August Father Lord Pedro I, Emperor of Brazil, Legitimate Heir and Successor of Lord João VI."". After the revolution of 1910, King Manuel II settled in England until his death in 1932. He was childless, and descendants of Miguel of Braganza (the usurper of 1826) claimed the throne. In 1920–22, the two (of the now four) branches of the House of Braganza negotiated an alleged pact under which