Mary Green was born at Charlestown, Massachusetts on April 1, 1634; baptized at the First Church on April 6, 1634. She was a daughter of John Green and Perseverance Green, who came to New England aboard the ship James in April, 1632. 
Mary was left bequests in her father John's will dated April 21, 1658; inventoried May 22, 1658, and proved June 15, 1658. 
She married by 1658, Thomas Stevens.  Her husband Thomas came first to Charlestown in New England with his brothers Cyprian and Richard, before 1660, in the company of Capt. Green, and is thought to be one of the sons of Col. Thomas Green of Devonshire, England or his son William. (? wife Mary Green's father or brother) 
Thomas was of Sudbury and later an early settler of Stow, Massachusetts where was an iron monger and blacksmith by trade. 
Thomas died prior to August, 1704 when his will was proved. 
The will of Thomas Stevens of Stow, Massachusetts was written in January, 1695 and the inventory is noted as of August 29, 1704. In it he names:
Steevens, Ann d. Thomas and Mary, March 20, 1664. M. R. (p. 137)
Steevens, Thomas s. Thomas and Mary, April 14, 1665. M. R. (p. 137)
Steevens, John s. Tho[mas] and Mary, April 23, 1667. M. R. (p. 137)
Steevens, Ciprian s. Thomas and Mary, April 19, 1670. M. R. (p. 137)
Steevens, Jacob ch. Tho[mas] and Mary, March 1, 73-4. M. R. (p. 137)
↑ Hunnewell, J. F., editor. Records of the First Church in Charlestown, 1632-1789, Charlestown, MA, 1880
↑New England Historical and Genealogical Register, vol. 4 (1850), page 184.
↑ 3.03.13.2 Anderson, Robert C. The Great Migration Begins: Immigrants to New England 1620-1633, Volumes I-III. p. 811-13.(Online database: AmericanAncestors.org, New England Historic Genealogical Society, 2010), (Originally Published as: New England Historic Genealogical Society. Robert Charles Anderson, The Great Migration Begins: Immigrants to New England 1620-1633, Volumes I-III, 3 vols., 1995).
↑ Case 9764: p.1-6 :Middlesex County, MA: Probate File Papers, 1648-1871.Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2014. (From records supplied by the Massachusetts Supreme Judicial Court Archives.)
↑ The New England Historical and Genealogical Register, NEGHS, Boston, MA, 1914. p. 303.
↑ 6.06.1 Hudson, Charles & Joseph Allen. History of the Town of Marlborough, Middlesex County, Massachusetts: From Its First Settlement in 1657 to 1861; with a Brief Sketch of the Town of Northborough, a Genealogy of the Families in Marlborough to 1800, and an Account of the Celebration of the Two Hundredth Anniversary of the Incorporation of the Town, T. R. Marvin & son, Boston, MA, 1862
↑ Barry, William. A History of Framingham, Massachusetts, Boston, MA, 1847
↑ 8.08.1 Case 21431:p. 1-4 : Middlesex County, MA: Probate File Papers, 1648-1871.Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2014. (From records supplied by the Massachusetts Supreme Judicial Court Archives.)
↑ 9.09.1Vital Records of Stow to the Year 1850, NEHGS, Boston, Massachusetts, 1911, p. 259