Mary Baker Eddy (born Mary Morse Baker July 16, 1821 - December 3, 1910) founded the Church of Christ, Scientist in 1879 and was the author of its fundamental doctrinal textbook, Science and Health with Key to the Scriptures. She took the name Mary Baker Glover from her first marriage and was also known as Mary Baker Glover Eddy or Mary Baker G. Eddy from her third marriage.