Mary Baker Eddy

Mary Baker Eddy (July 16, 1821 – December 3, 1910) was the founder of Christian Science, a new religious movement in the United States in the latter half of the 19th century.
Eddy wrote the movement's textbook "Science and Health with Key to the Scriptures" (first published 1875) and founded the Church of Christ, Scientist in 1879. She also founded the Christian Science Publishing Society (1898), which continues to publish a number of periodicals, including "The Christian Science Monitor" (founded in 1908).
Baker died of pneumonia at her home in Newton, Massachusetts on December 3, 1910 at the age of 89.