Christian woman activist. She studied at Joshi Gakuin high school and was influenced by Yajima Kajiko. She worked at the Maebashi Kyoai Girls' School (later, Kyoai Gakuen). In 1898, she married a Welshman, Edward Gauntlett. She acquired foreign nationality by legal procedure for the first time in Japan. She was instrumental in abolishing licensed prostitution and served as the fourth head of the Kyofu-kai nationally in 1946. She worked internationally for the women's suffrage movement and world peace. She acquired Japanese nationality along with her husband and used the name “Ganto Tsune.”