George G. Dunn was born 23 Dec 1832 in Rutherford County, Tennessee, possibly the son of John Pruitt Dunn and Nancy Brandon Dunn (tombstone date and 1850 Rutherford County census) George was a farmer his whole life.
Minerva A. Walton, George’s wife, was born ca. 1841 in Gibson County, Tennessee.
George G. Dunn married Minerva A. Walton on 3 SEP 1856 in Gibson County, Tennessee. Eli Boyett, J.P., performed the marriage. Recorded by E.W. Raines, Clerk.
George and Minerva appear in the 1860 U.S. Census as residents of Sebastian County, Arkansas. Minerva’s father, Thomas Jefferson Walton, and her brother’s also appear in this census two or three farms away. Listed in George’s household were two children, Mary, age 3, and Sinthia, age 1.
Thomas J. Walton, Minerva’s father, acquired a Johnson County land patent on 1 MAR 1860.
William J. Walton, Minerva’s brother, acquired a Sebastian County land patent on 1 MAY 1860,
George G. Dunn acquired a Sebastian County land patent on 1 AUG 1861.
George G. Dunn enlisted in Company B, 10th Arkansas Militia, along with his brother-in-law, William J. Walton. This unit disbanded.
George G. Dunn and his brother-in-law, W.J. Walton, enlisted in what eventually became Company H, 26th Arkansas Infantry, CSA (William J. Walton died 9 AUG 1862 at Crystal Hill, Faulkner County, Arkansas).
George was granted a sick furlough in OCT 1862. This might have caused him to miss the Battle of Prairie Grove
He remained with the regiment through JUN 1863.
George enlisted 1 SEP 1863 in Company A, 2nd Arkansas Infantry, USA (this is the date of the Battle of Devil’s Backbone). Several men from Company H went “Union” around this time.
He survived the war, as evidenced by his appearance in the 1870 Cannon County, Tennessee, Census. Minerva’s name appears as Marianny, age 28, b. TN. His daughter, Mary, is listed, age 13 (note age 3 in 1850), as well as Jane, age 8, and “Hethy,” age 11 months.
By 1880, his family was living in Dyer County, Tennessee. Minerva appears as M.A., age 37. Children include N.J., age 18 (note Jane from 1870. Nancy Jane?), and J.I., age 6 (this girl’s age matches your Joemma). Apparently, Sinthia and “Hethy” did not survive childhood.
The family had moved to Gibson County, Minerva’s home county, at least by 1886. George appears that year in the minutes of the Nebo Christian Church as a deacon.
George died 6 SEP 1889 and was buried in the Yorkville Cemetery, Yorkville, Gibson County, TN
Minerva appears in the 1900 Gibson County, Tennessee, census with two grandchildren, Dow Iona Travis, age 15, and Ellie Travis, age 11. Minerva’s brother, George W. Walton (spelled Walden), age 53, was also in the household.
I hope this is helpful. I'll email transcriptions of the actual records to you.