Maria I of Portugal did not live to see the creation of the Portuguese Republic.
Dona Maria I ( English : Mary I ; 17 December 1734 -- 20 March 1816 ) was Queen of Portugal , Brazil , and the Algarves . Portugal ( Portuguese : [ puɾtuˈɣaɫ ] ) , officially the Portuguese Republic ( [ República Portuguesa , links = no ] ) ( Portuguese : [ ʁɨ ` publikɐ puɾtu ' ɣezɐ ] ) In recognized minority languages of Portugal : After the 1910 revolution deposed the monarchy , the democratic but unstable Portuguese First Republic was established , later being superseded by the Estado Novo right-wing authoritarian regime .