You might want to look at the following well-documented website for more information. http://www.cherringlm.com/gene.html
Among other information there it is stated that "Edna Herring, b 1807 NC, whom I believe was a daughter of Graddy's, married James E Millard, b c.1800 NC, and they followed the same migration path from North Carolina to Tennessee to Arkansas. James E Millard can be found in the 1830 Census of Haywood County, Tennessee and his next door neighbor is his brother-in-law, Ichabod Herring. James E Millard is then found in the 1850 Census Yell of County, Arkansas..."

I am researching Isaac Wood (of 1830 Haywood Co., TN) and Logan Mingo Wood whom I believe had some connection with the Herring family, other than a land transaction in Johnson Co. AR mid-1830's. It is yet to be determined if/how the families might have been related.