EiryakuEiryaku was a Japanese era name after Heiji and before Ōhō. This period spanned the years from January 1160 through September 1161. The reigning emperor was Emperor Nijo.Change of eraFebruary 9, 1160 Eiryaku 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 Heiji 2, on the 10th day of the 1st month.Events of the ''Eiryaku'' era1160 : Minamoto no Yoshitomo, was killed in a campaign to overthrow the imperial chancellor, Taira no Kiyomori. Yoshitomo's wife, Tokiwa Gozen was compelled to flee Kyoto with her three sons.