Iwamura Castle was located in the southeastern area of Mino Province in Japan. Its ruins can be found in the modern-day municipal subdivision of Iwamura, in Ena, Gifu Prefecture. Along with Takatori C

Lady Otsuya was a Japanese female samurai from the Sengoku period. She was a daughter of the Oda clan and served as ruler of Iwamura Castle until the last days of her life.