He is not the same Archibald that settled in Blount Co. Tn. Some DAR records are incorrect!
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He may be the same Archibald that is named in 1779 as Exr Capt. John's Will (brother or uncle)?
Lived in Snow Creek area of Iredell Co. NC.
Neighbor of Patrick in 1778? Twin!
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1781, 26 Jan - 11 Mar 1781: Lt. Archibald Sloan served 48 days in Capt. Joseph Sharpe's Co. Light Horse Service under Col. Francis Lock along with brother Samuel Sloan.
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13 May 1783: Archibald is listed among 25 families from North Carolina that took an Oath of Allegiance to the Spanish crown in the Natchez District of Spanish West Florida (Florida del Oeste, now southern Mississippi and the Florida parishes of Louisiana) on 13 May 1783. This was following British agreement to a preliminary treaty of peace with Spain on 20 January 1783, ending the conflict that had begun with the Spanish declaration of war on 21 June 1779. This was also subsequent to the formal termination of hostilities between the United States and Great Britain on 15 April 1783.
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1792: In the Spanish census of the Natchez District of Florida del Oeste, Lt. Archibald SLOAN III is listed as "Archward Sloan," residing in the area of Santa Catalina. Other portions of the Natchez District were Big Black, Buffalo Creek, Bayou Pierre, Bayou Sara, Santa Clara, Homochitto, Second and Sandy Creek, and Vila Gayoso. {Jack Marler's research from "Residents of the Mississippi Territory Miscellaneous" Book 2A by Jean Strickland and Patricia N. Edwards (Ben Strickland, P. O. Box 5147, Moss Point, Mississippi 39563: 1995)} {see Marler-J.doc for more info and map}
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3 Sep 1793: Archibald is listed as a witness in Natchez court records.

Sources:
1. DAR 74053 ref. NC. state papers Vol. XVII pg 1506. [military]
2. Will of John Sloan 1779 Rowan Co. NC.
3. Rowan Co. 1778 Tax list Capt. Purviance Dist.
4. Brother, Patrick Sloan's memo [dob]
5. Monita Horn's research
a. NC Gen. Soc. Journal date?? [Oath of Allegience info]? additional info from Marler.
b. Natchez MS. Court Records: Book F, pg228

1. Title: "State Records of North Carolina, Vol. XVII, 1781-1785"
   Publication: 1899 - Pg. 1057
   Repository:
   Note: NCRVWar.doc or http://www.rootsweb.com/~ncrevwar/sharpe.htm
   Text: [Lt. Archibald Sloan served 48 days in Capt. Sharpe's Light Horse Service under Col. Francis Lock]