The profiles for William Ransom Baucom and Martha Patsy Holmes Baucom, married July 1847, already existed with no sources when I joined WikiTree. He is said to be my 3xgreat-grandfather (still looking for proof between him and my 2xgreat-grandfather Alvis).
Today while going through old North Carolina Genealogical Society periodicals, I found an article full of chronological abstracts of death and marriage notices from the Raleigh Register. It includes an entry for Saturday, 31 July 1847, p3, column 5 which says "In Union County, Mr. Ransom Baucom to Miss Patsy Helms."
Winslow, Raymond A Jr, "Marriages and Deaths From the Raleigh Register, 1847," ''North Carolina Genealogical Society Journal'', (The, Raleigh, North Carolina, USA, https://www.ncgenealogy.org : accessed 18 May 2018), 2004, v30 no 2, pg 152; citing ''Raleigh Register'', The (Raleigh, North Carolina, USA: Weston R Gales, editor and proprietor), 31 July 1847, pg 3, column 5, Marriage Notice, Ransom Baucom and Miss Patsy Helms, Union County; North Carolina State Archives, Raleigh, North Carolina, USA, microfilm reel RaRRsw-15.
I've searched for a digitized copy of the paper to no avail. I did find another abstract by a different person which gives the same information but in alphabetic order.
Broughton, Carrie L, State Librarian and compiler, ''[http://digital.ncdcr.gov/cdm/ref/collection/p15012coll1/id/1840 Marriage and Death Notices in Raleigh Register and North Carolina State Gazette 1846-1855]'', 1948; ''State Library of North Carolina'', database with images, "North Carolina Digital Collections - Family Records Collection" (http://digital.ncdcr.gov/cdm/home/family-records : accessed 18 May 2018).
Would you consider two derivative sources, which appear to be created by different people at different times but from the same newspaper, to be sufficient evidence to change the LNAB?
I did check the book by Gerald Helms and found that there are a couple of Martha Helms, born in that area in the right age range, who are unaccounted for.