Mary E. Hale Foye (1843-1931) was born in Boston, Massachusetts, and died in Portland, Maine. She was a student of Mary Baker Eddy's, taking Primary class instruction in September 1885 and joining the Christian Scientist Association in October 1885. In 1890, she moved to Brooklyn, New York, with her husband and two children to help with the growth of Christian Science there. While there, in August of that year, their son, Henry, died and Charles H. Foye was subsequently arrested on charges of criminal negligence for failing to seek medical care. The case was tried before the grand jury in February 1891. The jury refused to return an indictment, so the case was dismissed. In 1898, shortly after the death of her husband, she moved back to Portland, becoming an active member of the local Christian Science movement. She joined The First Church of Christ, Scientist, in Boston, Massachusetts, in April 1896 and was a member until her passing. She was also a practitioner listed in the directory of The Christian Science Journal from 1896 until 1931.

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