<page_title> United Kingdom of Portugal, Brazil and the Algarves </page_title> <section_title> Monarchs of the United Kingdom of Portugal, Brazil and the Algarves </section_title> <table> <cell> Maria I <col_header> Name </col_header> </cell> <cell> 17 December 1734 – 20 March 1816 (aged 81) <col_header> Lifespan </col_header> </cell> <cell> Queen Maria I <col_header> Image </col_header> </cell> </table>
On 20 March 1816 Queen Maria I died.