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Events on Wednesday 20 March 1816 1
1734 – 1816Maria I of Portugal (1734-1816)Died 20 March 1816, aged 81Maria I reigned as Queen of Portugal from 1777 and, after fleeing to Brazil ahead of Napoleon's invasion in 1807, also became the first monarch to rule from the Americas. Known as "Maria the Pious" and, due to her mental illness in later life, "Maria the Mad," she died in Rio de Janeiro.