Kingdom of Portugal
After the Portuguese Restoration War of 1640–1668, the kingdom passed to the House of Braganza and thereafter to the House of Braganza-Saxe-Coburg and Gotha. From this time, the influence of Portugal declined, but it remained a major power due to its most valuable colony, Brazil. After the independence of Brazil, Portugal sought to establish itself in Africa, but was ultimately forced to yield to the British interests, leading to the collapse of the monarchy in the 5 October 1910 revolution and the establishment of the First Portuguese Republic.
Manuel II of Portugal
Since both the Dover and Paris Pacts did not resolve the issue of succession and there are no known documents proving them, there was no direct heir to the defunct throne. Manuel also made it clear that the branches of the Portuguese royal family (including the Imperial family of Brazil, the Braganza-Orleans, and the descendants of the Duke of Loulé) ended with the last direct male heir to the House of Braganza. Still, the monarchist Integralismo Lusitano movement acclaimed Duarte Nuno, Duke of Braganza as King of Portugal, since Miguel I of Portugal, on the death of his grandchild, was head of the Portuguese Royal Family. Their justification, ironically, included the fact that both branches had met to determine the line of succession in Dover and Paris, even though those accords were both later repudiated.