Emperor Richu

Richū
Emperor of Japan
Reign	400–405 (traditional)
Predecessor	Nintoku
Successor	Hanzei
Born	336
Died	405 (aged 69)
Burial	Mozu no Mimihara no naka no misasagi (Osaka)

Emperor Richū (履中天皇, Richū-tennō^?) was the 17th emperor of Japan, according to the traditional order of succession.

No firm dates can be assigned to this emperor's life or reign, but he is conventionally considered to have reigned from 400 to 405.

Richū is regarded by historians as a "legendary emperor" of the 5th century. The reign of Emperor Kinmei (c. 509 – 571 AD), the 29th emperor, is the first for which contemporary historiography is able to assign verifiable dates; however, the conventionally accepted names and dates of the early emperors were not to be confirmed as "traditional" until the reign of Emperor Kanmu (737–806), the 50th sovereign of the Yamato dynasty.

According to Nihonshoki and Kojiki, Richū was the eldest son of Emperor Nintoku and Iwanohime.

Richū's contemporary title would not have been tennō, as most historians believe this title was not introduced until the reigns of Emperor Tenmu and Empress Jitō. Rather, it was presumably Sumeramikoto or Amenoshita Shiroshimesu Ōkimi (治天下大王), meaning "the great king who rules all under heaven." Alternatively, Richū might have been referred to as (ヤマト大王/大君) or the "Great King of Yamato."

Some scholars identify him with King San in the Book of Song. King San sent messengers to the Liu Song dynasty at least twice in 421 and 425.

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