Maria I of Portugal  did not live to see the 5 October 1910 Revolution.
Dom Manuel II ( 15 November 1889 -- 2 July 1932 ) `` the Patriot '' ( `` o Patriota '' ) or `` the Unfortunate '' ( `` o Desventurado '' ) was the last King of Portugal , ascending the throne after the assassination of his father , King Carlos I , and his elder brother , Luís Filipe , the Prince Royal . Dona Maria I ( English : Mary I ; 17 December 1734 -- 20 March 1816 ) was Queen of Portugal , Brazil , and the Algarves .