Birth year calculated from age at death (27 years), constrained by parents' marriage date.

Born in Virginia or North Carolina, daughter of
Joshua P Farrington and Nancy Critz
[they were married on 27 Dec 1805
 in Critz, Patrick County, Virginia].

[Perhaps Mary's middle name is Critz, but no record is found.]

The family moved from Critz, Virginia, due south to Rockingham, Richmond County, North Carolina. Joshua Farrington's family is listed there in the 1810 Census, including 3 females under age 10. From there, the family moved due west to Franklin, Williamson County, Tennessee, about 1811. The family is listed there in the 1820 Census, with 2 females age 10 to 15, and 3 females and 2 males under age 10.

She was a member of the Methodist Church.

Married on 27 Jun 1825
in Williamson County, Tennessee,
Robert R Peebles [son of
Howell Peebles and Rebecca B Fox]
  b. 1805 in Virginia

Children of
Robert R Peebles and Mary C Farrington:

1. William F Peebles
  b. 1826 in Franklin,
      Williamson County, Tennessee
  d. 2 Dec 1851 (death or burial date)
      in San Francisco, San Francisco County,
      California
      Aged 28 years 1 month 24 days
      [calculated birth date is 8 Oct 1823
       (assuming death date is same as burial);
       1850 Census shows birth year 1826 and
       parents married in 1825, so Age was
       probably 25 rather than 28]

2. Lucinda E Peebles Buck
  b. 7 Apr 1827
      in Williamson County, Tennessee
  d. 7 Nov 1915
      in Dyer, Gibson County, Tennessee
Married Churchwell Cornelius Buck

3. Infant Son Peebles
  b. 1828 in Williamson County, Tennessee

4. Sarah A Peebles Ware
  b. 31 Aug 1831 in Franklin,
      Williamson County, Tennessee
  d. 26 Jul 1872
      in Memphis, Shelby County, Tennessee
Married abt 1857
in Brownsville, Haywood County, Tennessee
Garland Pendleton Ware
 
 
After Mary's death leaving 3 young children,
her widower Robert R Peebles and her sister
Elizabeth Farrington
  b. 1808
      in Rockingham County, North Carolina
  d. 4 Aug 1839 in Brownsville,
      Haywood County, Tennessee
were married on 13 May 1835
in Brownsville, Haywood County, Tennessee
and together had one child:
Mary A Peebles (abt 1836 - ), who in the 1850 Census lived in Memphis with the family of her aunt Sarah C Farrington Gridley (died 29 Jul 1856).
Mary A Peebles married J H McKinney
on 15 Dec 1868 in Shelby County, Tennessee. In 1879 she was a widow living in Memphis.

--

In the 1850 Census
of Brownsville, Haywood Gounty, Tennessee,
of Mary Farrington's 3 living children, Sarah (age 18) and William (age 24) lived with their father Robert R Peebles and his 3rd wife Ann E Lewis, along with William's 3 sons [grandsons of Robert R Peebles] Robert A (age 6), James (age 4) and Charles H Peebles (age 3), their mother (wife of William) Mary McWilliams apparently having died. A daughter of Ann E Lewis, Samuella Peebles, had died in 1849 (age 2), and apparently another daughter had also died (so it seems Ann had no living children in 1850).
Mary Farrington's other daughter Lucinda E Peebles Buck (age 21) and her family lived next door.

In the 1860 Census
of Brownsville, Haywood County, Tennessee,
William's 3 sons, Robert (age 16), James (age 14) and Charles (age 13), continued living with their grandfather Robert Peebles and Ann Lewis, who had two daughters since 1850, Ida (age 8) and Lelia (age 6).

__

Siblings:
Mary C Farrington Peebles
    (1806 – 9 Nov 1833)
Elizabeth Farrington Peebles
    (abt 1808 – 4 Aug 1839)
Permelia Ana Farrington Peete
    (abt 1810 – 5 Jul 1839)
Gen. Jacob F Farrington
    (May 1812 – 18 Jan 1851)
Sarah C Farrington Gridley
    (abt 1813 – 29 Jul 1856)
John C Farrington (abt 1815 – )
Abigail K Farrington
    (abt 1817 - 18 Jan 1830)
William Martin Farrington
    (Sep 1822 – 14 Nov 1911)
Martha T Farrington Thomas
    (15 May 1825 – 28 Aug 1856)
Madison J Farrington (abt 1828 - )