This entry cautions the reader about "numerous factual errors" in the book Early Western Pioneers by George W Cleek (probably the same man whose headstone application for Adam Lightner was rejected).
The entry cites the book The Lightner Heritage, by Steve Bast, published 2006, for the following:
William was born in 1748 or 1749 and married Maria Elizabeth (maiden name unknown) about 1768.