His mother was Princess Ahiratsu hime, and in addition to Kisumimi no mikoto (he only appears in "Kojiki (The Records of Ancient Matters)) as his younger half-brother by the same mother, he had younger half brothers by different mothers, who were Emperor Suizei, Kamuyaimimi no mikoto, and Hikoyaimimi no mikoto.
母は、吾平津姫で、同母弟に岐須美美命（ただし古事記のみ登場）が、異母弟に綏靖天皇、神八井耳命、彦八井耳命がいる。