Possibly it is due to the issue of the Kusanagi sword that Yamato Hime, a character appearing in the anecdote about Yamato Oguna, was linked to the high priestess Yamato Hime no Mikoto.
おそらく、草薙剣の問題でヤマトヲグナ説話の登場人物のヤマトヒメと斎王倭姫命を結びつけたのであろう。