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.
History of Portugal (1777–1834)
The death of King Joseph in 1777 forced the accession of Princess Maria Francisca, his eldest daughter, to the throne of Portugal; she succeeded her father as the first Queen regnant of the 650-year-old country, which was still recovering from the 1755 Lisbon earthquake. Before becoming queen, Princess Maria and her husband, the Infante Pedro, lived on the sidelines of politics, but were clearly unsympathetic to her father's former Prime Minister, Sebastião José de Carvalho e Melo, the Marquis of Pombal, who had been the "de facto" ruler of the kingdom for the past 27 years. During her father's last few years, she had been the Marquis' fiercest detractor; once in power, she eagerly dismissed him and then exiled him to Pombal.