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“When Heaven and Earth divided, the God named Ame-no-Minakanushi-no-Kami, who was born in the midst of Heaven, had three sons: of whom the eldest, Takami-Musubi-no-Kami, i.e., Sumeragamutsu-Kanrogi-no-Mikoto, is the ancestor of the Tomo and Saeki Families; the second son, Tsuhaya-Musubi-no-Kami, i.e., Sumeragamutsu-Kanromi-no-Mikoto, is the ancestor of the Nakatomi Family of Asomi rank, and the youngest one, Kami-Musubi-no-Kami, is the ancestor of the Ki Family of Atai rank.”
In the divine genealogy of the Sendai Kuji Hongi, Tsuhaya-Musubi-no-Mikoto (the word “Mikoto” used there practically means only “Kami”) has a son, called Ame-no-Koyane-no-Mikoto, who is the ancestor of the Nakatomi Family of Muraji rank (i.e., the seventh of the eight classes of the nobility created by the Emperor Temmu in A.D. 682. It was given to the head of certain corporations (The Sendai-Kuji-Hongi, Japanese edition. The Kokushi-Taikei, Vol. VII, p. 177).
In the Shinsei-[errata 1]Shojiroku or Catalogue of Family Names Newly Compiled by Prince Manta, the writer states that Ame-no-Koyane-no-Mikoto is the great grandson of Tsuhaya-Musubi-no-Kami (Vide the late Prof. Kurita, The Shinsen-Shojiroka-Kosho or Commentary on the Catalogue of Family Names Compiled by Prince Manta, Japanese edition, Vol. VIII, pp. 537, 538. Vol. XVI, p. 1017).
7. Vide Sir Ernest Satow’s Article on the Toshigoi-Matsuri-no-Norito or Shinto Ritual of Praying for Harvest, for elucidating the meaning of this name Sumeraga-Mutsu-Kanrogi-Kanromi-no-Mikoto (T.A.S.J., Vol. VII, p. 114).