Dear Ms. Stewart,
I suspect we are after the same fellow:
Cornelius Stewart, b. before 1805,
married "Catherine" (unconfirmed info.)
His daughter Harriett H. Stewart was b. 15 July, 1820, died 25 May 1872 in Sevier County, AR. She married David Stephen Sanders b. 1817, d. 1902. - And their grandson married a woman who was probably part Cherokee.
If anyone can provide me with more documentation on the Stewarts, such as bible records, census, land ownership, etc., I may be able to assist with the related families of Sanders, Weems, Liddell, etc.