History of Portugal (1834–1910)
Militant Republicans and their allies in the Carbonária were not willing to remain in the shadows of the constitutional monarchy. Between 4–5 October 1910, members of the Carbonária, republican youth, and elements of the army instigated a coup d'état against the already weak constitutional monarchy. The young king and his family, after a few miscues, escaped from the Palace in Mafra to exile in England. On the morning of 5 October 1910, the Republic was declared from the balcony of Lisbon City Hall, ending eight centuries of monarchy in Portugal.
List of Portuguese monarchs
The monarchs of Portugal all came from a single ancestor, Afonso I of Portugal, but direct lines have sometimes ended. This has led to a variety of royal houses coming to rule Portugal, though all having Portuguese royal lineage. These houses are:The Portuguese House of Burgundy, known as the Afonsine Dynasty, was the founding house of the Kingdom of Portugal. Prior to the independence of Portugal, the house ruled the feudal County of Portugal, of the Kingdom of Galicia. When Alphonso I Henriques declared the independence of Portugal, he turned the family from a comital house to a royal house which would rule Portugal for over two centuries.
When Ferdinand I died, a succession crisis occurred and Ferdinand's daughter Beatrice of Portugal was proclaimed queen and her husband John I of Castile proclaimed king by the right of his wife. Her legitimacy as a monarch is disputed.