Individual Details

Her son William T. Dunivant was named as heir to his grandmother in 1861. He appears in the 1850 census with his guardian, and uncle, John Dunivant as a 9-year old, or born 1841. He is thought to have Rhoda's only child - that would place her birth in the early 1820's.

1850 Census. Salt Springs Twp, Randolph Co Mo, Hh 208
John Dunavent, 27
Martha, 19
William T., 9 (probably her nephew, son of Rhoda Cross Dunavent)
John A., age 1
Wright Cross, 12 (dittoed as a Dunavent, but I believe his surname was Cross, Martha's brother)
Martha, age 45, b. VA (dittoed as Dunavent - John's mother?)

I very much suspect this is William Dunavent, not Donophan, living with Wright Cross in 1860.
1860 Census. Macon Co, MO.
Hh 373
Wright Cross, 22, b. MO.
Elizabeth, 25, b. NC
Wm J., 5. Eliza G., 2 Both born in MO
Wm T. Donophan, 21, laborer

Birth	Abt 1822
Death	Bef 1848

Father	William Cross ( - 1848)
Mother	Rachel Wright ( - 1861)
Sibling	Elizabeth Cross (1821 - 1864)
Sibling	William Cross (1825 - )
Sibling	Durlin Cross (1824 - )
Sibling	Martha Cross (1831 - )
Sibling	Rachel Cross (1836 - )
Sibling	Wright Cross (1838 - )