Gennin
For the formerly-German town of Gennin, see Jenin, Poland

Gennin (元仁) was a Japanese era name (年号,, nengō,, lit. "year name") after Jōō and before Karoku. This period spanned the years from November 1224 to April 1225. The reigning emperor was Go-Horikawa-tennō (後堀河天皇).
For the formerly-German town of Gennin, see Jenin, Poland

Gennin (元仁) was a Japanese era name (年号,, nengō,, lit. "year name") after Jōō and before Karoku.  This period spanned the years from November 1224 to April 1225. The reigning emperor was Go-Horikawa-tennō (後堀河天皇).

Change of era
1224 Gennin gannen (元仁元年):  The era name was changed to mark an event or a number of events. The previous era ended and a new one commenced in Jōō 3.

Events of the Gennin Era
1224 (Gennin 1): Kyogyoshinsho was believed to have been composed in 1224; and this is also considered the year in which Jōdo Shinshū was founded.

Notes
References
Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
Titsingh, Isaac. (1834). Nihon Odai 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. ISBN 978-0-231-04940-5; OCLC 6042764

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