There is a high possibility that Obiko no Mikoto is identical to Ohobiko, an ancestor of Owake no omi and whose name is inscribed on the kinsakumei tekken (an iron sword with gold-inlaid inscriptions) that was excavated from the Inariyama-kofun Tumulus in Saitama Prefecture.
なお、埼玉県の稲荷山古墳から発掘された金錯銘鉄剣に見える乎獲居臣の上祖・意冨比垝（おほびこ）と同一人である可能性が高い。