(1844 – November 14, 1909) was a Japanese educator of the early Meiji era. Born in Aizu, she was the sister of the karō, Yamakawa Hiroshi; her other siblings included physicist Yamakawa Kenjirō and Meiji-era social figure Ōyama Sutematsu. Futaba took part in the defense of Tsuruga Castle in the Boshin War (1868-9). She was also briefly married to Kajiwara Heima, another Aizu karō. In the Meiji era, Futaba worked at the , the forerunner of Ochanomizu University, during the tenure of fellow Aizu native Takamine Hideo as principal. For her work in education, she was awarded with junior 5th court rank (従五位, ju go i). References 山川二葉 | 近代日本人の肖像 National Diet Library, Japan Yamakawa Kenjiro (1931). Aizu Boshin senshi. 1844 births 1909 deaths Japanese educators Japanese women in warfare People from Aizu Women in 19th-century warfare Academic staff of Ochanomizu University Japanese women educators 19th-century Japanese women