Also, in "Harimanokuni Fudoki" (Records of the culture and geography of the Harima Province), he is described as Emperor Osazaki and Emperor Nanba, making it conceivable that achievements of two Emperors were combined into one.
また『播磨国風土記』においては、大雀天皇と難波高津宮天皇として書き分けられており、二人の天皇の事跡を一人に合成したとも考えられる。