Mary L. Poore (c.1833- 1896) was born in Hopkinton, New Hampshire, and died in Boston, Massachusetts. During the summer of 1883, she received treatment from Charles Osgood, a metaphysician based in Charlestown, Massachusetts. Osgood loaned her a copy of Science and Health with Key to the Scriptures, and she became interested in Christian Science. Poore wanted to go to Boston to study at the Massachusetts Metaphysical College but did not have the money to do so. Despite expressing an interest in Christian Science, Poore never studied with Mary Baker Eddy or joined the Church of Christ (Scientist).

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