Eiso (era)Eiso was a Japanese era name after Eien and before Shōryaku. This period spanned the years from August 988 through November 990. The reigning emperor was Emperor Ichijō.Change of era989 Eiso 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 Eien 2, on the 8th day of the 8th month of 989.Events of ''Eiso'' era989 : Emperor Ichijō made a personal visit to the home of his father, the retired Emperor En'yū, who is now known as Kongō Hō.989 : Fujiwara no Kaneie fell ill, and his son, Fujiwara no Michitaka, was chosen as regent in his place. Kaneie retired from public life. He shaved his head and became a Buddhist monk.July 26, 989 : Fujiwara no Kaneie died at age 62, and his home was converted into a Buddhist temple.