Chōroku (長禄) was a Japanese era name (年号, nengō,, lit. "year name") after Kōshō and before Kanshō. This period spanned the years from September 1457 through December 1460. The reigning emperor was Go-Hanazono-tennō (後花園天皇).
Change of era 
- 1457 Chōroku gannen (長禄元年): The era name was changed to mark an event or a number of events. The old era ended and a new one commenced in Kōshō 3.
Events of the Chōroku era 
- 1457 (Chōroku 1'): Tarō Sayemon attempted to retrieve the Sacred Jewel for Emperor Go-Hanazono; and he actually did manage to gain possession of it for a brief time. A counterattack prevented the success of this dangerous mission in Yoshino. In 1443 (Kakitsu 3, 23rd day of the 9th month), an armed group of rebels penetrated the palace defenses. A fire was started and one of the men sought to kill Emperor Go-Hanazono, but the emperor escaped. However, the intruders managed to steal the Sacred Treasures – the mirror, the sword and the jewel. Later, a guard found the mirror and a priest found the sword, but the location of jewel was not known until the 8th month of Bunnan gannen.
- 1458 (Chōroku 2, 8th month): The Sacred Jewel is retrieved from the former Southern Court. It is returned to Kyoto to join the other Sacred Treasures which comprise the Imperial Regalia of Japan.
- 1459 (Chōroku 3): Shogun Ashikaga Yoshimasa provided a new mikoshi and a complete set of robes and other accouterments for this festival on the occasion of repairs to the Atsuta Shrine in the 1457-1459 (Chōroku 1-3).
- ^ Nussbaum, Louis-Frédéric. (2005). "Chōroku" in Japan encyclopedia, p. 122; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File.
- ^ Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 331-351.
- ^ Ponsonby-Fane, Richard. (1959). The Imperial House of Japan, p. 107.
- ^ Titsingh, pp. 344-345.
- ^ Titsingh, p. 349.
- ^ Ponsonby-Fane. (1962). Studies in Shinto and Shrines, p. 452.
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