6 January 823 (Kōnin 10, 4th month, 19th day): At age 14, Prince Masara is named Junna's heir.
22 March 833 (Tenchō 10, 28th day of the 2nd month): In the 10th year of Emperor Junna's reign, the emperor abdicated. The succession (senso) was received by his adopted son. Masara-shinnō was the natural son of Emperor Saga, and therefore would have been Junna's nephew.[5] Soon afterwards, Emperor Ninmyo is said to have acceded to the throne (sokui).[6] This was confirmed in ceremonies.[7]
6 May 850 (Kashō 3, 21st day of the 3rd month): Emperor Ninmyō died at the age of 41.[9]
After his death
Emperor Ninmyō is traditionally venerated at his tomb; the Imperial Household Agency designates Fukakusa Imperial Mausoleum (深草陵, Fukakusa no Misasagi), in Fushimi-ku, Kyoto, as the location of Ninmyō's mausoleum.[1]
Ninmyō was sometimes posthumously referred to as "the Emperor of Fukakusa," because that was the location of his tomb.[10]
Eras of reign
The years of Ninmyō's reign are identified by more than one era name (nengō).[11]
↑Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 106-112; Brown, Delmer M. et al. (1979). Gukanshō, pp. 283-284; Varley, H. Paul. (1980). Jinnō Shōtōki, pp. 164-165;