Sarah Turman was NOT the wife of William Sanders Lancaster (1760-1813) of NC and Georgia. Lila and Harvey Eubanks found evidence proving that in the 1990s, and I posted news of their discovery to this site.
I've just tonight viewed five online trees containing this wrong information about Sarah Turman, so the word has apparently not reached all researchers.
If you search for "Turman" on this site the results will take you to a discussion of this NC family beginning in one case with Message #263 of February 26, 1999. See also, for example, Posts #506 and #1585 by me and #2645 of March 23, 2002, by Nancy Mathews. Nancy's message shows which William Lancaster Sarah Turman actually married.
If anyone can prove who really was married to William Sanders Lancaster (1760-1813) I would be happy to know of it.