Ken'ei

Ken'ei was a Japanese era name after Genkyū and before Jōgen. This period spanned the years from April 1206 through October 1207. The reigning emperor was Emperor Tsuchimikado.

Change of era

1206 Ken'ei 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 Genkyū 3, on the 27th day of the 4th month of 1206.
Events of the ''Ken'ei'' era
1206 : Shōgun Minamoto no Sanetomo's standing at court was raised to the 2nd rank of the 4th class.
1206 : The emperor planned to pay a visit to the sesshō Kujō Yoshitsune, but in the night before this visit, an unknown assassin was introduced secretly into Yoshitune's house, and he was stabbed by a spear pushed up from below the floor. No one was able to discover the perpetrator. Yoshitsune was then aged 38 years. The sadaijin Konoe Iezane succeeded Yoshitsune as sesshō; and the dainagon Fujiwara no Tadatsune became sadaijin.
1206 : Konoe Iezane ceases to function as sesshō ; and instead, he becomes kampaku.