<page_title> List of Bulgarian monarchs </page_title> <section_title> Principality of Bulgaria and Kingdom of Bulgaria (1878–1946) </section_title> <table> <cell> Simeon II <col_header> Name </col_header> </cell> <cell> 28 August 1943 – 15 September 1946 <col_header> Reign </col_header> </cell> <cell> Became tsar of Bulgaria at age 6, following the death of his father, Boris III. Monarchy abolished by the Communists. <col_header> Notes/Death </col_header> </cell> </table>
During his reign from 1943 to 1946, Simeon II became Tsar of Bulgaria at age 6.