<page_title> List of Emperors of Japan </page_title> <section_title> Emperors of Japan </section_title> <table> <cell> 56 <col_header> No. </col_header> <col_header> Legendary Emperors (660 BC – 269 AD) </col_header> <col_header> Kofun period (269–539) </col_header> <col_header> Asuka period (539–710) </col_header> <col_header> Nara period (710–794) </col_header> <col_header> Heian period (794–1185) </col_header> </cell> <cell> Emperor Seiwa <col_header> Posthumous name </col_header> <col_header> Legendary Emperors (660 BC – 269 AD) </col_header> <col_header> Kofun period (269–539) </col_header> <col_header> Asuka period (539–710) </col_header> <col_header> Nara period (710–794) </col_header> <col_header> Heian period (794–1185) </col_header> </cell> </table>
Emperor Seiwa was the 56th emperor of Japan.