According to "Nihonshoki", Emperor Keitai was the fifth generation descendant of Emperor Ojin (grandchild of his great-grandchild) and his father was Hikoushio and his mother was Furihime the seventh generation descendant of Emperor Sunin.
『日本書紀』によれば応神天皇5世の孫（曾孫の孫）で父は彦主人王（ひこうしのおおきみ）、母は垂仁天皇7世孫の振媛（ふりひめ）である。