was a after Kajō and before Ten'ei. This period spanned the years from August 1108 through July 1110.Nussbaum, Louis-Frédéric. (2005). "Tennin" in ; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File . The reigning emperor was .Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 178–181; Brown, Delmer et al. (1979). Gukanshō, pp. 320–322; Varley, H. Paul. (1980). Jinnō Shōtōki. pp. 203–204.

Change of Era February 14, 1108 : The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Kajō 3, on the 3rd day of the 8th month of 1108.Brown, p. 321.

Events of the Tennin Era 1108 (Tennin 1): Minamoto no Tameyoshi, grandson and heir of Minamoto no Yoshiie, became clan leader of the Seiwa Genji after the death of his grandfather.Titsingh, p. 179. 1108 (Tennin 1): Mount Asama erupts, causing widespread damage. Centre national de la recherche scientifique (CNRS) , France: Yoshida, Minoru and Aoyagi, Ryugi. "Fluorine and chlorine contents in the products of the 1108 (Tennin) eruption of Asama volcano," Bulletin of the Volcanological Society of Japan (Kazan). Vol. 49, No. 4 (2004). pp. 189–199; Hayakawa, Yukio and Hideko Nakajima. "Volcanic Eruptions and Hazards of Asama Written in Historical Records" (abstract) , Bulletin of the Volcanological Society of Japan (Kazan). July 19, 2006. 1109 (Tennin 2, in the 1st month): The emperor visited Iwashimizu Shrine and the Kamo Shrines.

Notes

References Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. ; OCLC 251325323 Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ; OCLC 58053128 Titsingh, Isaac. (1834). Nihon Ōdai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691 Varley, H. Paul. (1980). A Chronicle of Gods and Sovereigns: Jinnō Shōtōki of Kitabatake Chikafusa. New York: Columbia University Press. ; OCLC 6042764

External links National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection