According to the "Kojiki" and the "Nihon Shoki," he was a prince of the Emperor Kosho; and his mother was Yosotarashihime (this name is described in the text of the "Nihon Shoki"; in the "Kojiki," she is referred to as Yosotahobime no mikoto or Hiokihime).
記紀によれば、孝昭天皇の皇子で、母は瀛津世襲の妹・世襲足媛命（よそたらしひめ『日本書紀』本文、『古事記』では余曽多本毘売命、日置姫）。