KenchōKenchō was a Japanese era name after Hōji and before Kōgen. This period spanned the years from March 1249 to October 1256. The reigning emperor was Emperor Go-Fukakusa.Change of era1249 Kenchō gannen: 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'' era1253 : Kenchō-ji founded.