In 1860 South Carolina there was a Jas F. Austin age 9 [b. 1851]living in Laurens, SC, the son of Saml and Lucy Austin.
In Standing Spring, Greenville County, SC there was a Benjamin F. Austin, age 14 [b. 1846], the son of Nelson and Mary Austin.
There was a Private F.D. Austin in Co F, 3rd SC Inf and a Franklin B. Austin in Co F, 12th SC. Franklin B. Austin was born about 1843, a Farmer, married a Susan H. and was living in Fairfield, SC in 1880.
Other names mentioned in your post:
L.M. Davis
Confederate Infantry Regiment, Hampton Legion South Carolina, Co I
[There was a M.L.Davis, age 24 [b. abt 1836] who in 1860 was living in Line Creek, Greenville County, SC; a farmer married to Mary J. age 22 and three children Charles W. age 6, Francis J. age 4 and Mary L. age 2. By 1870, M.L. Davis, a Blacksmith, is living in Hyland, Greenville Co, SC with his wife, Mary, his youngest child from the 1860 census and 4 other children ages 8 to 5 months and a Benjamin Davis age 14, but the relationship is not clear. By 1880 he has moved his family to Glassy Mountain, Greenville Co, SC. He appears to have died prior to 1910.]
U.S. Civil War Soldiers, 1861-1865
Name: M.L. Davis
Side: Confederate
Regiment State/Origin: South Carolina
Regiment Name: 16 and 24 (Consolidated) South Carolina Infantry
Regiment Name Expanded: 16th/24th Consolidated Regiment, South Carolina Infantry
COMPANY: F
Rank In: Private
Rank In Expanded: Private
Rank Out: Private
Rank Out Expanded: Private
Film Number: M381 roll 8
16th Regiment, South Carolina Infantry (Greenville Regiment)
16th Infantry Regiment, recruited in Greenville County, was organized and mustered into Confederate service in December, 1861. It moved to Charleston and for a time was stationed at Adams Run under General Hagood. During December, 1862, the unit was ordered to Wilmington, North Carolina and in May, 1863, to Jackson, Mississippi where it was assigned to General Gist's Brigade in the Department of Mississippi and East Louisiana. After sharing in the defense of Jackson, it was stationed at Rome, Georgia, during the Chickamauga Campaign. Later it joined the Army of Tennessee, fought in the Atlanta Campaign, and endured Hood's winter operations in Tennessee. The 16th ended the war in North Carolina. In December, 1863, it totalled 559 men and 452 arms, lost many in Tennessee, and surrendered on April 26, 1865. The field officers were Colonels Charles J. Elford and James McCullough, Lieutenant Colonel W.B. Ivor, and Major Charles C. O'Neill.
There are 9 men named AUSTIN in this unit, but no Francis.
Austin, Green B.
Co A Private Private
Austin, J.T.
Co I Private Private
Austin, James M.
Co A,I Private Captain
Austin, John H.
Co A Private Private
Austin, Thomas J.
Co I Private 2 Lieutenant
Austin, W. Manning
Co A Private Private
Austin, W.H.
Co E Private Private
Austin, William A.
Co I Private Private
Austin, William H.
Co E Private Private
Hudson, J.H.
Confederate Infantry 21st Regiment, South Carolina Infantry
Hudson, J.H.
Confederate Infantry 26th Regiment, South Carolina Infantry
Hudson, J.H.
Confederate Cavalry 3rd Regiment, South Carolina Cavalry
[This unit has 3 men named Austin: C.W., Daniel and J.J. - but no Francis]
Hudson, J.H.
Confederate Infantry 9th Battalion, South Carolina Infantry (Smith's) (Pee Dee Legion)
Hudson, J.H.
Confederate 2nd Regiment, South Carolina Rifles
1880 United States Federal Census
Name: J. H. Hudson
Home in 1880: Bennettsville, Marlboro, South Carolina
Age: 48
Estimated Birth Year: abt 1832
Birthplace: South Carolina
Spouse's Name: Mary E.
Father's birthplace: Virginia
Mother's birthplace: South Carolina
Occupation: State Judge
Marital Status: Married
Race: White
Gender: Male
J. H. Hudson 48 w/m State Judge b. SC [abt 1832]
Mary E. Hudson 42 w/f wife Keeping House b. SC [abt 1838]
Annie Hudson 22 w/f daughter single at home b. SC [abt 1858]
Willie C. Hudson 18 w/f daughter single at school b. SC [abt 1862]
Clara Hudson 10 w/f daughter single at school b. SC abt 1870]
Norene Hudson 4 w/f daughter single at home b. SC [abt 1876]
I don't find any I G DuPre in Confederate service
I don't find any B L Brady in Confederate Service
Hope this may have helped.
JR