Erastus M. Kellogg (1815-1897) was born in Richland, New York, and died in Wolcott, Connecticut. He graduated from Hamilton College in Clinton, New York, in 1840 and studied at the Auburn theological seminary. In 1841, he married Hannah R. French in Nashua, New Hampshire. Kellogg was ordained in 1842 as the pastor of the Presbyterian church in New Boston, New Hampshire, and of the Congregational church in Greenville, New Hampshire. In 1855, he partially lost his voice and gave up preaching. He purchased a drugstore in Manchester, New Hampshire, in 1866. Having partially recovered his voice, Kellogg returned to preaching and became pastor of the Congregational church in Lyme, New Hampshire. In 1873, he moved to New Jersey and became pastor of the Presbyterian church in Manchester and Hamilton. The Kelloggs returned to Manchester, New Hampshire, in 1879. Once his wife passed away, he moved to Connecticut to live with his son, Reverend H. Martin Kellogg, preaching alongside him until his death. Kellogg was a member of the Boston Presbytery and Derry association of Congregational ministers. While his wife wrote to Mary Baker Eddy in 1866 to order a copy of Science and Health with Key to the Scriptures, there is no record of Kellogg studying with Eddy or uniting with The First Church of Christ, Scientist, in Boston, Massachusetts.

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