Emperor Ojin became the crown prince at the age of four. He was crowned (in 270) at the age of 70 and reigned for 40 years until his death in 310. He supposedly lived in two palaces both of which are in present day Osaka. Ojin is traditionally identified as the father of Emperor Nintoku; who acceded after Ojin's death.

Ojin has been deified as Hachiman Daimyojin; regarded as the guardian of warriors. The Hata Clan considered him their guardian Kami. The actual site of Ojin's grave is not known; but he is traditionally venerated at a memorial Shinto shrine (misasagi) at Osaka.

The Imperial Household Agency designates this location as Ojin's mausoleum. It is formally named Eega no Mofushi no oka no misasagi. Pictures From History