Kenji 建治
April 1275 – February 1278
Emperor Go-Uda
Location	Japan
Monarch(s)	Emperor Go-Uda
Chronology Bun'ei Kōan

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Kenji (建治) is a Japanese era name (年号, nengō, lit. "year name") which followed Bun'ei and preceded Kōan. This period spanned the years from April 1275 to February 1278.^[1] The reigning emperor was Go-Uda-tennō (後宇多天皇).^[2]

• 1275 Kenji gannen (建治元年): The new era name was created to mark an event or a number of events. The previous era ended and a new one commenced in Bun'ei 12. The era name comes from the Rites of Zhou and combines the characters 建 ("build, establish") and 治 ("govern").

• 1275 (Kenji 1): The Mongols sent an ambassador to Kamakura along with the delegation which accompanied the envoy from the Goryeo. The unwelcome visitor was put to death; and his severed head was publicly displayed.^[3]
• November 23, 1275 (Kenji 1, 5th day of the 11th month): Hirohito-shinnō was named Crown Prince and heir to his first cousin, the Daikakuji-tō Emperor Go-Uda. This was the result of political maneuvering by Hirohito's father, the Jimyōin-tō Emperor Go-Fukakusa.^[4]
• 1277 (Kenji 3, 5th month): Yoshimasa laid down his office.^[5]

• Ackroyd, Joyce. (1982) Lessons from History: The Tokushi Yoron. Brisbane: University of Queensland Press. ISBN 978-0-702-21485-1; OCLC 7574544
• 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 9780231049405; OCLC 6042764

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

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