For the "Kashō" era which started in 1106 -- sometimes romanized as "Kajō", see Kashō (late Heian period).
Kashō (嘉祥) was a Japanese era name (年号,, nengō,, lit. "year name"), also known as Kajō,[1] after Jōwa and before Ninju. This period started in June 848 and ended in April 851.[2] During this time, the emperors were Ninmyō-tennō (仁明天皇) and Montoku-tennō (文徳天皇).[3]
18 February 848 (Kashō 1, 10th day of the 1st month): Fujiwara Yoshifusa (904-872) was given an important office in the court.[4] Yoshifusa's daughter became Emperor Montoku's wife and the mother of Emperor Seiwa.[5]
848 (Kashō 1, 6th month): A rare white tortoise was discovered in Bungo Province. The tortoise was understood as a sign of good luck.[4]
849 (Kashō 2, 4th month): An ambassador from Baekje was received at court.[4]
849 (Kashō 2, 10th month): Nimmyo's his 40th birthday was an event.[4]
849 (Kashō 2, 11th month): The emperor toured the capital in a grand parade.[4]
850 (Kashō 3, 1st month): The emperor made an official visit to the home of his mother.[4]
May 6, 850 (Kashō 3, 21st day of the 3rd month): Emperor Ninmyō died at age 41.[6] The succession (senso) was received by his eldest son.[7] Soon after, Emperor Montoku accepted the monarch's role and duties and powers (sokui).[6] This was confirmed in ceremonies.[8]
850 (Kashō 3, 5th month): Tachibana no Kachiko died. She was the widow of Emperor Saga and the mother of Emperor Ninmyō and the grandmother of Emperor Montoku.[6] She founded a Buddhist temple called Danrin-ji (檀林寺) which evolved into Tenryū-ji (天龍寺) which exists today.
♯The Northern pretenders did not recognize the Genkō era. Gentoku was used in the Northern Court until 1332. ₪The Shōkyō era was recognized only by the Northern pretenders, not by the Southern Court. ‡ Upon reunification of the Northern and Southern Courts in 1392, Genchū was discontinued. Meitoku was used until 1394.