She was from the line of ancestor of Shikino agatanushi and is called Kawamatabime in "Kojiki" (The Records of Ancient Matters). She was a younger sister of Shikino agatanushi hae (a father of Akutohime who became a wife of Emperor Annei). Dates of birth and death are unknown.
She is called Kawamatahime in the volume one of the first book of "Nihonshoki" (Chronicles of Japan), and a daughter of Shikinoagatanushi.
Kawamatabime does not appear in body of the book and the first volume of the second book of Nihonshoki, and in body of the book, Isuzuyori hime no mikoto is considered to have been a wife of Emperor Suizei, while in the first volume of the second book, Itoorihime, a daughter of Kasugano agatanushi Ohimoro is considered to have been a wife of Emperor Suizei, respectively.
It is understood that she was one of Kesshi-Hachidai (Eight Undocumented Sovereigns) and was a nonexistent empress.