1William Richard Cutter, Historic Homes and Places and Genealogical and Personal Memoirs Relating to the Families of Middlesex Co., Massachusetts, Vol. 2, p. 490 (1908).
"(III) Ephraim Frost, son of Ephraim Frost (2), and grandson of Elder Edmund Frost (1), was born in Cambridge, Massachusetts, September 23, 1682, and died there June 26, 1769, aged eighty-seven. He was a planter, with a farm in Menotomy, now Arlington. His wife Sarah was admitted to the precinct church at the time of its organization, September 9, 1739.
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He married Sarah Cooper, September 19, 1714. She was daughter of Samuel Cooper, who was deacon of the church and selectman twelve years, and granddaughter of of John Cooper, who was selectman thirty-eight years, town clerk thirteen years, and deacon of the church twenty-three years.
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He died June 26, 1769, aged eighty-seven years; Sarah his wife, died February 21, 1753, aged sixty-six years. Their gravestones are standing in the old cemetery at Arlington." Children, born at Menotomy: 1. Ephraim, born July 10, 1715. 2. Samuel, born December 18, 1716, mentioned below. 3. Sarah, born January 2, 1718-19, died May 12, 1759; married Mose Harrington. 4. Anna, born December 15, 1720, married September 22, 1737, Thomas Adams. 5. Martha, born August 4, 1722, married January 10, 1740, Thomas Adams, Jr. 6. Eunice, born July 18, 1724, died April 10, 1739. 7. Abigail, born April 25, 1726, married ------- Carter. 8. William, born November 13, 1727, died February 13, 1727-28. 9. Lydia, born August 8, 1729.".