From http://ferrellfoster.com/2013/04/29/mortons-migrate-to-henderson-co...

There is not a Bible Record or genealogist before 1990 whoever suggested the wife of Marshall Morton Sr. was a “Winnifred” or an “Ashcroft/Ashcraft”. This is has been a common reference in the last 15 years by researchers here on the Internet. There is also a misconception that Marshall Morton Sr. was the son of a James Morton and Jane Peden. Don’t run up that tree either, because it is all a mistake. Let me know if you want to know how that misconception got started and I’ll be glad to share it. The Bible records in my possession record the wife of Marshall Morton Sr. either as “Winny” or “Winnea”.

“I personally believe that someone concluded she was an Ashcraft because they had a son named Drury Ashcraft. Not even John Ashcraft (supposedly the father of Winny by some researchers) doesn’t list a Winny as one of his children nor is she in any court records regarding him or the settlement of the estate. She was not his daughter. As for the son named Drury Ashcraft, he was given this name because Marshall Morton and Drury Ashcraft hunted together.”

The 1790 census shows Marshall Morton living in Newberry County, South Carolina, with four free white males under age 16, three free white females, and a total of eight in the household. I suspect the latter number means there were no slaves, since only the free whites are accounted for.

Source:

https://www.findagrave.com/memorial/192470047/winifred-morton

“The Heritage of Blount County, Alabama” Page 312

Her name is listed in her grandson's Bible. See information on Marshall's page

Source:

https://www.findagrave.com/memorial/192470047/winifred-morton