During the reign of Emperor Nintoku (313-399), the members of the clan were sent to diverse parts of the country to spread the knowledge and practice of sericulture.
One story centered around Emperor Nintoku (323 A.D.) discusses the overflowing of the Kitakawa and Mamuta Rivers.
The largest of these, Daisen Kofun, is believed to be the grave of the Emperor Nintoku and is the largest grave in the world by area.
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The shrine legend also claims that it was appointed as an official shrine for prayers to the Imperial clan under Emperor Nintoku, Emperor Seinei, Emperor Bidatsu, Emperor Kōtoku and Emperor Go-Nara.