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Tenroku ( was a 天禄) Japanese era ( after 年号 , "year name") nengō and before Anna This period spanned the years from March 970 through March 973. Ten'en. The reigning emperors were  Reizei -tennō ( and 冷泉天皇) En'yū -tennō (. 円融天皇)
Change of era
February 970 Tenroku gannen (: The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in 天禄元年) Anna 3, on the 25th day of the 3rd month of 970. 
Events of the Tenroku era
970 ( Tenroku 1, 1st month): Fujiwara no Arihira (藤原在衡) became , and sadaijin Fujiwara no Koretada藤原伊尹 became . udaijin 
970 ( Tenroku 1, 5th month): The (regent) and sesshō daijō-daijin Fujiwara no Saneyori ( died at the age of 71; and the 藤原実頼) udaijin Koretada then assumed his responsibilities. 
970 ( Tenroku 1, 10th month): The Fujiwara no Arihira sadaijin ( died at age 79. 藤原実頼) 
971 ( Tenroku 2, 3rd month): For the first time, a festival ( matsuri) in honor of the of kami Iwashimizu Shrine was celebrated. 
971 ( Tenroku 2, in the 11th month): Koretada was created ; Minamoto no Kaneakira (源兼明) was made daijō-daijin sadaijin; and Fujiwara no Yoritada ( was named 藤原頼忠) . udaijin 
April 4, 972 ( Tenroku 3, 5th day of the 3rd month): Emperor En'yū's coronation at age 14 is organized by Koretada.  972 ( Tenroku 3, 11th month): Koretada dies at age 49. 
^ Nussbaum, Louis-Frédéric. (2005). "
Tenroku" in Japan Encyclopedia, p. 961, at , p. 961 Google Books; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File Archived 2012-05-24 at Archive.today.
^ Titsingh, Isaac. (1834).
Brown, Delmer Annales des empereurs du japon, pp. 144–145; et al. (1979). Gukanshō, pp. 299–300; Varley, H. Paul. (1980). Jinnō Shōtōki, pp. 191–192.
^ Brown, p. 298.
^ a b c d Titsingh,
^ a b Titsingh,