Barbara, I don't have a Nancy as daughter of Archibald Buchan; however, I do have a Nancy born to Archibald's brother,John Buchan and Catherine Brown (first or second wife) abt. 1831, and could have been in Moore Co. NC.John and Catherine married Feb. 21, 1812 in Robeson CO. NC and he died in Pulaski Co. GA in 1868.
I have Nancy married to Richard F. DeLamar Jan. 11, 1849.She could have married again in 1860, of course.
Sources:Wills, Records of Return 1853-1906 Bk B, Georgia State Archives, and Census Records 1850, 1860 Pulaski Co. GA.One source shows John married first to a Racheal McBride.He also was married to a Margaret Elizabeth Reaves GainerApr. 13, 1851 and An Dunn, Oct. 18, 1857.
My information came from research done by my husband's uncle, a great-grandson of Archibald Buchan;he did a good job of documenting sources.