David, good to hear from you.I don't have anything to back up the statement that Eligah's(Lige)wife was a Duckworth; only word of mouth handed down through the family.There are descendents of Eliza Caroline, sister of Lige, who m. James Gooch, who also say that she was a Duckworth, and she was called Nellie.(I don't know how the name on the 1850 Census translates to Nellie.)
The written name on 1850 census of Hardin Co. looks like Sarepta to me, and that's how Ancestry read it.However, Sistler shows it as Sampla.Another person working on this family translated it as Saressla.I suspose this could be correct, since double s'es were written to look like a "P". (Reference the word Tennessee in writings of the 1850's.)
In the 1860 Census of Decatur Co., she is listed as S.G. (On 1850 Census her middle initial was "J".)
I have no other resource to check since there are no marriage records in Hardin Co. for the 1840's.The story is that she died shortly after Lige died in prison in Mar.1864.