It is generally believed that he was a member of Iki clan and IKI no Karakuni who had performed well in Jinshin War on the Omi Imperial Court (Emperor Kobun) side was the same family.
壱岐氏の一族とされ、壬申の乱において近江朝廷（弘文天皇）側で活躍した壱伎韓国は同族と思われる。