Concerning Oo-na-muchi-no-mikoto, the editor of the Chronicles of Japan said that he was father or grandfather of Hime-tatara-isuzu-hime who was the prime spouse of the Sumera-mikoto and the first empress of Japan in the first volume of the Chronicles of Japan describing events in the age of mythology. Therefore, it is probable that the Sumera-mikoto should have tried to absorb the former authority by means of the marriage with his daughter. This has been one of ordinary ways of merging other nations in pre-modern times.