<page_title> List of longest-reigning monarchs </page_title> <section_title> Dependent or constituent monarchs with verifiable reigns by exact date </section_title> <table> <cell> Heinrich Joseph Johann <col_header> Name </col_header> <col_header> To </col_header> </cell> <cell> Auersperg (HRE) <col_header> State </col_header> <col_header> (days) </col_header> </cell> </table>
Heinrich Joseph Johann of Auersperg is one of the longest reigning monarchs.