The following data is extracted from Genealogy and Biography of Ontario County, New York.
(IV) Isaac, sixth child and fourth son of Deacon Ebenezer and Sarah dewis) Hamlin, was born July 1, 1714, died at Springfield, Massachusetts, 1805. He removed to Wareham where he and his wife were original members of the church in 1739 and where their eldest son Seth was baptized, March 14, 1742. He was dismissed to the Sharon church May 30, 1742. He owned a share in the Sharon Iron Works which he sold in 1749. He removed from Sharon, Connecticut, and his name appears on the records of Lenox, Massachusetts, June 11, 1777, where he bought land and erected a mill. In 1783 he deeded twenty acres of land with grist mill and half a sawmill to Perez and Asa Hamlin my sons." This will at Lenox Furnace, now (1910) Lenox Dale, was kept in operation for many years and was burned after passing out of the family. Isaac and his wife were admitted to the Lenox Congregational church August 20, 1780, "by recommendation." He married -Mary Gibbs of Agawam, intentions published September 24, 1737, sister of Ruth Gibbs, wife of his brother Thomas. Children: 1. Seth, of whom further. 2. Isaac, January 10, 1742. 3. Perez, February 3, 1748. 4. John. March 21, 1750. 5. Jehial, October 2, 1751. 6. Jesse, December 17, 1753 7. Cyreneus, August 15, 1755. 8. Mercy, September 8, 1757. 9. Asa, September 23, 1759. Their first child was born at Wareham, Massachusetts, the others at Sharon, Connecticut.
Source: Genealogy and Biography of Ontario County, New York