Mary Baker Eddy, American religious leader and author, founded Christian Science (born 1821)

Mary Baker Eddy was an American religious leader and author, who in 1879 founded The Church of Christ, Scientist, the Mother Church of the Christian Science movement. She also founded The Christian Science Monitor in 1908, and three religious magazines: the Christian Science Sentinel, The Christian Science Journal, and The Herald of Christian Science.

Christian Science is a set of beliefs and practices which are associated with members of the Church of Christ, Scientist. Adherents are commonly known as Christian Scientists or students of Christian Science, and the church is sometimes informally known as the Christian Science church. It was founded in 1879 in New England by Mary Baker Eddy, who wrote the 1875 book Science and Health with Key to the Scriptures, which outlined the theology of Christian Science. The book was originally called Science and Health; the subtitle with a Key to the Scriptures was added in 1883 and later amended to with Key to the Scriptures.