Emperor Ingyō (允恭天皇 Ingyō-tennō) was the 19th 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 411-453.
Ingyō is considered to have ruled the country during the mid-fifth century, but there is a paucity of information about him. There is insufficient material available for further verification and study.
According to Kojiki and Nihonshoki, he was the fourth son of Emperor Nintoku and his consort Iwanohime, and therefore a younger brother of his predecessor Emperor Hanzei. He sat on the throne after Hanzei died and ruled for 41 years.
Ingyō'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, Ingyō might have been referred to as (ヤマト大王/大君) or the "Great King of Yamato."
His consort was Oshisaka no Ōnakatsu no Hime. They had five sons and four daughters, including Emperor Ankō and Emperor Yūryaku. He reformed the system of family and clan names, because many named themselves false names using higher ranked clan or family names.
Events of Ingyō's reign
The earliest documented earthquake in Japan occurred in 416 when the Imperial Palace at Kyoto was leveled by the severity of the Earth's tremors.
Some scholars identify him with King Sai in the Book of Song. This would have been a king of Japan (referred to as Wa by contemporary Chinese scholars) who is said to have sent messengers to the Song Dynasty at least twice, in 443 and 451.
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