She married Lieutenant Joseph Wheeler on January 1, 1681 in Chelmsford. Joseph was born about 1660 in Concord.
Mary and Joseph's children included:
Ruth Wheeler (1682, married Eleazer Robbins),
Mary Wheeler (1684),
Rebecca Wheeler (1686),
Elizabeth Wheeler (1690),
Jane Wheeler (1692/93),
Joseph Wheeler (1694/95), and
Ephraim Wheeler (1698).
According to Cutter, they built the first house in Littleton.
Littleton, Middlesex County, Massachusetts was first settled in 1686 by English settlers and was the the location of the Native American village called Nashoba Plantation
Old Style Calendar
Before 1752 the year began on Lady Day, March 25th,. Dates between January 1st and March 24th were at the end of the year. Old Style (O.S.) and New Style (N.S.) are used to indicate whether the year has been adjusted. Often both dates are used.
Middlesex County, Massachusetts was created on May 10, 1643. The county originally included Charlestown, Cambridge, Watertown, Sudbury, Concord, Woburn, Medford, Wayland, and Reading.
Genealogical and Family History of the State of Maine, Volume 2 by Henry Sweetser Burrage, Albert Roscoe Stubbs
Mary [Powers], born 1663, married, January 1, 1681, Lieutenant Joseph Wheeler (1660-1706), who was probably a son of Lieutenant Joseph Wheeler, later Captain Wheeler.
from The Records of Littleton
Mary [Powers] m. Jan 1st 1681 Joseph Wheeler. She was probably his 2d or 3d wife. He probably died in Stow about 1705-6. Children: Ruth b. Sept 19 1682 probably Mary b. Oct 24 1684 probably d. young, perhaps at Stow probably Rebecca b. July 31 1686
Ephraim m. Nov. 20 or Nov. 1, 1720 Maria Glazier, probably dau. George and Sarah (Barrett) Glazier
The Genealogical and Encyclopedic History of the Wheeler Family by Albert Gallatin Wheeler, American College of Genealogy
Joseph Wheeler. He lived at Concord, Mass., and married there March 1, 1681, Mary Powers.
Children: (born at Concord, Mass.)
Ruth Wheeler, born Nov. 19, 1682; probably m. Jan. 10, 1709-m. Eleazer Robbins.
Elizabeth Wheeler, born Aug. 8, 1690.
Jane Wheeler, born Jan. 16, 1692-3.
Joseph Wheeler, born Jan. 12, 1694-5.