Mary A. Poole (1849-1901) was born in Nobleboro, Maine, and died in Boston, Massachusetts. She was a student of Mary Baker Eddy's, completing the Primary class (1884) and Normal class (1887). She was also an active member of the Christian Scientist Association and the Church of Christ (Scientist). In the spring of 1888, Poole and other students caused a split within the Association over its response to the Abby Corner court case. After leaving the Christian Science movement, Poole, alongside her husband, Horace Poole, maintained a healing practice in Boston until about 1897.

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