<page_title> Empress Kōken </page_title> <section_title> See also </section_title> <table> <cell> Empress of Japan: Kōken 749–758 <col_header> Regnal titles </col_header> </cell> <cell> Empress of Japan: Shōtoku 764–770 <col_header> Regnal titles </col_header> </cell> </table>
Empress Kōken first reigned from 749 to 758, then, she reascended the throne as Empress Shōtoku until 770.