Dom Manuel I  (15 November 1889 – 2 July 1932), sometimes known as the Unfortunate  or the Patriot , was the last king of Portugal, reigning from 1908 until 1910.
 
Between 4 and 5 October 1910, the Republican Revolution erupted in the streets of Lisbon. What started as a military coup commenced by soldiers, was joined by some civilians and municipal guards attacking the loyal garrisons and the royal palace, while the guns from the cruiser NRP Adamastor added to the cannonade. The Palace of Necessidades (then official residence of the young King) was bombarded, forcing Manuel to move to the Mafra National Palace, where he rendezvoused with his mother, Queen Amélia, and his grandmother, the Queen Mother Maria Pia of Savoy. There was little apparent popular reaction to these events: pictures from the square in front of the City Hall in Lisbon, where the declaration of the Republic occurred, did not show an overwhelming multitude, and even some in the military were fearful that their actions would not be successful. One republican commander, Admiral Cândido dos Reis, even committed suicide when he believed that the events had not succeeded. One day later, once it was clear that the Republicans had taken the country, Manuel decided to embark from Ericeira on the royal yacht Amélia IV for Porto, with armed Republicans arriving as the ship departed. It is unclear whether his advisers motivated Manuel to change his intentions \ or whether he was forced to change his destination en route, but the Royal Family disembarked in Gibraltar after they received notice that Porto had fallen to the Republicans. The coup d'état was complete, and the Royal Family departed for exile,  arriving in the United Kingdom, where they were received by King George.