Lisbon Regicide
The assassination of King Carlos and the Prince Royal was the effective end of a constitutional monarchy in Portugal (later confirmed by the 5 October 1910 revolution). The regime functioned for another 33 months with growing agitation and demands for reform (although considerably less than in the future First Republic). It cannot be denied that the weak and permissive attitude in the Government of Acclamation was an incentive for the Republican Party to attempt another coup. The assassinations did not change the system of government; instead, they delayed the change.
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.