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Shōhō (正保) was a Japanese era name (年号, nengō, "year name") after Kan'ei and before Keian. This period spanned the years from December 1644 through February 1648.[1] The reigning emperor was Go-Kōmyō-tennō (後光明天皇).[2]

Change of era[edit]

  • 1644 Shōhō gannen (正保元年): The era name was changed to Shōhō to mark the enthronement of the new emperor Go-Kōmyō. The previous era ended and a new one commenced in Kan'ei 21, on the 16th day of the 12th month.[3]

Events of the Shōhō era[edit]

  • 1644 (Shōhō 1): The third major map of Japan was ordered by the Shogunate—the first having been completed in Keichō 10—at a scale of 1:432,000 (based on maps of the provinces drawn to a scale of 1:21,600).[4]
  • May 18, 1645 (Shōhō 2, 23rd day of the 4th month): The Shogun was elevated the court role of Middle Counselor (中納言, Chūnaigon).[2]
  • December 1645 (Shōhō 3): Death of Takuan Sōhō, a leading figure in the Zen reform movement.[3]
  • January 18, 1646 (Shōhō 2, 2nd day of the 12th month): Death of Hosokawa Tadaoki.[citation needed]
  • May 11, 1646 (Shōhō 3, 26th day of the 3rd month): Death of Yagyū Munenori.[citation needed]
  • June 13, 1646 (Shōhō 3, 30th day of the 4th month): Death of Miyamoto Musashi.[citation needed]
  • 1648 (Shōhō 6): The shogunate issues a legal code governing the lives of commoners in Edo.[3]


  1. ^ Nussbaum, Louis-Frédéric. (2005). "Shōhō" in Japan encyclopedia, p. 881; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File Archived 2012-05-24 at
  2. ^ a b Titsingh, Isaac. (1834). Annales des empereurs du japon, p. 412.
  3. ^ a b c Hall, John Whitney. The Cambridge History of Japan. p. xx.
  4. ^ Traganeou, Jilly. (2004). The Tokaido Road: Traveling and Representation in Edo and Meiji Japan, p. 230.


External links[edit]

Preceded by
Era or nengō

Succeeded by