Iwanohimenomikoto became jealous easily, and in 342, when she went to play in Kumano and her husband invited Yata no himemiko (Emperor Nintoku's empress after Iwanohimenomikoto died) into the Court, she became very angry and moved to Tsutsukinomiya in Yamashiro (present day Kytotanabe City, Kyoto Prefecture), and died at this spot.
とても嫉妬深く、仁徳天皇30年（342年）、彼女が熊野に遊びに出た隙に夫が八田皇女（磐之媛命崩御後、仁徳天皇の皇后）を宮中に入れたことに激怒し、山城の筒城宮（現在の京都府京田辺市）に移り、同地で没した。