<page_title> List of Portuguese monarchs </page_title> <section_title> House of Aviz (1385–1580) </section_title> <table> <cell> John III The Pious Portuguese: João III <col_header> Name </col_header> </cell> <cell> 7 June 1502 – 11 June 1557 (aged 55) <col_header> Lifespan </col_header> </cell> <cell> 13 December 1521 <col_header> Reign start </col_header> </cell> <cell> 11 June 1557 <col_header> Reign end </col_header> </cell> </table>
John III (7 June 1502 – 11 June 1557) was the King of Portugal from 13 December 1521 to 11 June 1557.