was a after Hōji and before Kōgen. This period spanned the years from March 1249 to October 1256. The reigning emperor was . Change of era 1249 : The new era name was created to mark an event or a number of events. The previous era ended and a new one commenced in Hōji 3. Events of the Kenchō era 1253 (Kenchō 5): Kenchō-ji founded. Notes References Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ; OCLC 58053128 Titsingh, Isaac. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691 Varley, H. Paul. (1980). A Chronicle of Gods and Sovereigns: Jinnō Shōtōki of Kitabatake Chikafusa. New York: Columbia University Press. ; OCLC 6042764 External links National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection Japanese eras 1250s in Japan