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Female Mary Hinckley Click to view Mary Hinckley in the family tree

Mary was born on November 6th, 1740.1   Mary's father was Samuel (Twin) Hinckley and her mother was Sarah Miller.  Her paternal grandparents were Samuel Hinckley and Mary Freeman. She had seven brothers and three sisters, named John, Edmund, William, Seth, Samuel, Josiah, Nathan, Mehitable, Sarah and Reliance.1 

1 phelps.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1604