It's a little problematic trying to figure out who is who back in those days given all the Edwards. In the book titled Early Tennessee Marriages Vol. #1 by Grooms page 528 it does show an Edward marring Sarah Coe in 1845. the listing below shows Edward marrying Julia Cheek in 1852. He died in 1849, so that can't be the same one. Further it shows a William C. marrying Sarah ann Tuggle in 1836. That's a little confusing. Typo or what, I don't know.
In the late 1940's Letha Taylor Bailey did a deep Sweatt family geneology for the purpose of joining "Daughters of the American Revolution". This is very detailed and it only shows Sarah ann as the only wife.
Curious as to what work you've done on my family. Have you traced them back to England?