Not a descendant, but here are some known soldiers for your files:

COWAN, JAMES MARTIN: C. S. Company E, 14th (Powers’) Arkansas Infantry
Regiment Pvt/Pvt. Enlisted 17 Jul 1861 at Yellville, Marion, Arkansas. Mortally wounded at Iuka, Mississippi 19 Sep 1862. Died Sep 1862 (exact date not known) at Iuka, Tishomingo, Mississippi. Born 1831 in Indiana. Age listed as 19 on 1850 Johnson Co., Arkansas Census. Married Tabitha Frances Mounce Abt 1855 in Newton Co., Arkansas. Brother of Jasper N., Robert R. Stephen J., and William R. Cowan. Nephew of Stephen A. Cowan. Uncle of Zachariah T. Cowan.

CLARK, JAMES WESLEY: C. S. Company C, 16th Arkansas Infantry Regiment
2Lt/Capt. Enlisted 7 Oct 1861 at Clarksville, Johnson, Arkansas as 2nd Lieutenant. Age at enlistment: 23. Mustered into service 29 Oct 1861 at Fayetteville. Promoted 1st Lieutenant 11 Dec 1861. Elected Captain 8 May 1862 and assigned to duty 15 Jun 1862. Wounded in the shoulder and captured at Corinth 4 Oct 1862. Died of wounds 15 Nov 1862 at Iuka, Tishomingo, Mississippi. Born in Arkansas. Age listed as 11 on 1850 Johnson Co., Arkansas Census. Widow received rations from Freedman’s Bureau 12 Jun 1966 as resident of Spadra, Johnson, Arkansas. Brother of Andrew J., David N., and William P. Clark. Brother-in-law of James L. and John P. Farmer, John N. and William S. Jarnigan, Lawrence H, Toliver G., and William M. Blackard.

MAYFIELD, JOHN M.: C. S. Company D, 17th (Griffith’s) Arkansas Infantry Regiment
Pvt/ Pvt. Enlisted 18 Nov 1861 at Fayetteville, Washington, Arkansas. Age at enlistment: 21. Left behind wounded on field at Iuka, Mississippi 19 Sep 1862. Born in Washington Co., Arkansas. Age listed as 20 on 1860 Washington County Census. Married Tennessee Ann Wharton. Filed Pension Application (#464) 15 Aug 1892 from Johnson Co., Arkansas. Died 24 Aug 1899 in Benton Co., Arkansas. Widow Tennessee A. Mayfield filed Pension Application 8 Aug 1901.