Sarah E. Mackay (1838-1904) was born in Portland, Maine, and died in Cambridge, Massachusetts. She was the daughter of Ashur Ware, a lawyer and newspaper editor, who was nominated by President James Monroe (and confirmed by the Senate) on February 15, 1822, to serve as a judge in the U.S. District Court, District of Maine. She was a patient of and copyist for Phineas Parkhurst Quimby in the 1860s at the same time as Mary Baker Eddy, then Mary M. Patterson. After Quimby's death, Sarah and her sister Emma were in possession of Quimby's notebooks until they were returned to his son, George, in 1882. Sarah Ware married John Mackay in London in 1877. She later returned to the United States, apparently after her husband's death.

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