   was a  after chÅshÅ and before eiji. this period spanned the years from september 1135 through july 1141.nussbaum, louis-frÃ©dÃ©ric. (2005). "hÅen" in ; n.b., louis-frÃ©dÃ©ric is pseudonym of louis-frÃ©dÃ©ric nussbaum, see deutsche nationalbibliothek authority file. the reigning emperor was .titsingh, isaac. (1834). annales des emepereurs du japon, pp. 181-185; brown, delmer et al. (1979). gukanshÅ, pp. 322-324; varley, h. paul. (1980). jinnÅ shÅtÅki, pp. 204-205. ==change of era== * february 15, 1035 : the new era name hÅen was created to mark an event or a series of events. the previous era ended and the new one commenced in chÅshÅ 4, on the 27th day of the 4th month of 1135.brown, p. 323. ==events of the hÅen era== * 1136 (hÅen 2, 3rd month): the former-emperor toba hosted a grand dinner party.titsingh, p. 184. * 1136 (hÅen 2, 5th month): the sadaijin fujiwara ieyetada died at age 75. * 1136 (hÅen 2, 12th month): the udaijin minamoto no arihito was named sadaijin; and the naidaijin fujiwara munetada was named udaijin. * 1136 (hÅen 2, 12th month): fujiwara yorinaga was appointed minister of the center (naidaijin) at the age of 17.titsingh, p. 184; brown, p. 323. * 1138 (hÅen 4, 2nd month): the udaijin munetada shaved his head at age 77; and he became a buddhist priest. * 1138 (hÅen 4, 9th month): the former-emperor toba went to mount hiei, where he stayed for seven days. * may 2, 1140 (hÅen 6, 14th day of the 4th month): the priests of the buddhist temples on mount hiei banded together to burn down the mii-dera again.brown, p. 324; titsingh, p. 185. ==notes==  ==references== * brown, delmer m. and ichirÅ ishida, eds. (1979). gukanshÅ: the future and the past. berkeley: university of california press. 10-isbn 0-520-03460-0; 13-isbn 978-0-520-03460-0; [http://www.worldcat.org/title/future-and-the-past-a-transl-and-study-of-the-gukansho-an-interpretative-histor
Japanese_eras