Queen Maria I of the United Kingdom of Portugal, Brazil and the Algarves Maria I (English: Mary I) (17 December 1734 – 20 March 1816) was Queen of Portugal, Brazil, and the Algarves. Known as Maria the Pious (in Portugal), or Maria the Mad (in Brazil), she was the first undisputed Queen regnant of Portugal. Her reign would be a noteworthy one. With Napoleon’s European conquests, her court, then under the direction of Prince Dom João, the Prince Regent, moved to the then Portuguese colony of Brazil. Later on, Brazil would be elevated from the rank of a colony to that of a Kingdom, the Kingdom of Brazil, with the consequential formation of the United Kingdom of Portugal, Brazil and the Algarves.