She moved to Frederick County, Virginia with her family about 1740.
Her first husband was Joshua Haynes (Haines). He was the son of Abram Haines and Grace Hollingshead and was born about 1721 in Evesham Township, Burlington County, New Jersey.
Joshua requested a certificate from Haddonfield Monthly Meeting in New Jersey on March 10, 1745/46, to Opeckon. The certificate was signed on April 14, 1746.
In 1750 Joshua Haines, Abraham Haines and George Washington acquired 1,122 acres on the South Branch of the Bullskin Creek. This property was divided, Joshua and Abraham Haines taking 700 acres. In 1752 Joshua Haines sold his share to Abraham Haines.
Joshua and Mary's children included:
Mary Haynes Collett (1753, married Daniel Collett),
Grace Haynes (1753), and
Joshua Haynes, Jr. (1754).
His estate was finally settled in 1760 by James and Mercy McCormick.
Mercy and James' children included:
Moses McCormick (1758),
Rachel McCormick Lockhart (1759, married Samuel Lockhart), William J. McCormick (1765, married Nancy Hendricks),
James McCormick (1768 , married Jemima Violet),
Sarah McCormick (1770),
Mercy McCormick Griggs (1772, married Thomas Griggs),
Elizabeth McCormick (1774, married her cousin John McCormick),
Joshua McCormick (1775).
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.
Frederick County, Virginia was formed in 1743 from Orange County. Old Frederick County included all or part of four counties in present-day Virginia: Shenandoah, Clarke, Warren, and Frederick, as well as five in present-day West Virginia: Hardy, Hampshire, Berkeley, Jefferson and Morgan.
Lush forests in Colonial America allowed settlers to build wooden homes.
Collett vs. McCormick--O. S. 156; N. S. 55--Complainants are Daniel Collett and Mary, his wife, late Mary Haynes, daughter of Mrs. Mercy McCormick.
James McCormick died testate April, 1803, leaving sons and daughters, Moses, James, Joshua, Sarah, Samuel Lockhart and Rachel, his wife; John McCormick and Elizabeth, his wife. Thomas Grigs and Mercy, his wife.
Mrs. Mercy McCormick, widow of James, was widow of Joshua Haynes, father of Mary Collett.
Joseph, father of Mary, died November, 1804.
James McCormick's will of Berkeley County dated 16th August, 1798. Son James and his son Eli; daughter Rachel and her son Ezekiel; daughter Sarah; son Joshua; daughter Marcy Griggs; daughter Elizabeth; son Moses.