Christopher St. John (1871-1960) was a British author, playwright, and activist. Born Christabel Gertrude Marshal, St. John changed her name after her conversion to Catholicism in 1912. While studying to become a dramatist, St. John moved in with her boss's daughter, Edith Craig, and the two quickly became an inseparable couple. Later, an artist named Clare Atwood also joined the relationship, which the three maintained for the entirety of their adult lives. Passionate about the women's suffrage movement, St. John worked with other prominent leaders in the movement, writing articles and creating feminist literature to raise awareness and morale for the movement.