was a Japanese era name (年号, nengō, lit. year name) of the Northern Court during the Era of Northern and Southern Courts after Eiwa and before Eitoku. This period spanned the years from March 1379 through February 1381. The emperor in Kyoto was The Southern Court rival in Yoshino during this time-frame was . Nanboku-chō overview During the Meiji period, an Imperial decree dated March 3, 1911 established that the legitimate reigning monarchs of this period were the direct descendants of Emperor Go-Daigo through Emperor Go-Murakami, whose had been established in exile in Yoshino, near Nara. Until the end of the Edo period, the militarily superior pretender-Emperors supported by the Ashikaga shogunate had been mistakenly incorporated in Imperial chronologies despite the undisputed fact that the Imperial Regalia were not in their possession. This illegitimate had been established in Kyoto by Ashikaga Takauji. Change of era 1379, also called : The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Eiwa 5. In this time frame, Tenju (1375–1381) was the Southern Court equivalent nengō. Events of the Kōryaku era 1379 (Kōryaku 2): Shiba Yoshimasa becomes Kanrei. 1380 (Kōryaku 3): Kusunoki Masanori rejoins Kameyama; southern army suffers reverses. July 26, 1380 (Kōryaku 2, 24th day of the 6th month): The former Emperor Kōmyō died at age 60. Notes References Ackroyd, Joyce. (1982) Lessons from History: The Tokushi Yoron. Brisbane: University of Queensland Press. Mehl, Margaret. (1997). History and the State in Nineteenth-Century Japan. New York: St Martin's Press. ; OCLC 419870136 Nussbaum, Louis Frédéric and Käthe Roth. (2005). Japan Encyclopedia. Cambridge: Harvard University Press. ; OCLC 48943301 Thomas, Julia Adeney. (2001). Reconfiguring Modernity: Concepts of Nature in Japanese Political Ideology. Berkeley: University of California Press. ; 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 External links National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection Japanese eras 1370s in Japan 1380s in Japan