Hello woodjems34. Thanks for your interest in my Samuel Crow.
Suzy Wade's Samuel Abner Crow was my 2nd cousin, twice removed and his daughter, Wilma Louise Crow Wade was my 3rd cousin. So your friend, Suzy Wade, and I are distant cousins.
Wilma Louise Crow's Most Recent Common Ancestor (MRCA) was Samuel Crow and was represented in the Crow(e) DNA Group Study at Family tree DNA(re: http://www.familytreedna.com/public/CrowDNA/default.aspx?sec...
) by Gold Color Coded Y-DNA Kits 6946, 6971, 7235, 7551, 21908, 32869 and 157312.
Not sure how you arrived that your Thomas Crow's (b.1800) father was John Crow (b. 1739 in Maryland) unless it's all the misinformation and family trees seen on the Internet.
It's my belief that your Thomas Crow, born 29 Apr 1800 in South Carolina, (buried at Poplar Springs, Crow Valley, Whitfield County, Georgia), was likely the son of a much younger John Crow (probably born between 1761 & 1765 in SC, not MD) that married Elizabeth Clark (probably born between 1770 & 1780 in SC). This John Crow that married Elizabeth Clark was represented by several living Gold DNA Crows in the Crow DNA Study and neither John or Elizabeth Clark Crow were probably never further north of SC than the southern edge of NC and SC. If you have documentation proving otherwise, I hope you will share it.
Your quote: "To make things more complicated another friend says he is related through Abner Crow (b 1845) son of Roland Crow son of Abner Crow (b. 1775 N.C.) son of Stephen Crow (b. 1750)"
Stephen Crow (born 1749/1750 in NC died 1830 in Clarke County GA) was represented by several living male descendants in the Crow(e) DNA Group Study and all are color coded Silver DNA Crows. These Silver DNA Crows are unrelated to your assumed Gold DNA Crows, and Suzy Wade's and my proven Gold DNA Crows that descend from Samuel Crow, born between 1771 & 1774, probably in southern Spartanburg County, South Carolina.
Although the Gold and Silver Crows are unrelated in genealogical times, they were always near one another in Georgia and Alabama, as well as later years in TX and Oklahoma.
Some of the Silver DNA Crows, including Roland B. Crow (Abner Crow's son), are buried at the Pine Forest Cemetery in Beaver Valley, Saint Clair County, Alabama, with our Gold DNA Crows (Samuel B. Crow [1847-1917] grandson of Suzy and my, Samuel Crow born between 1771 and 1774).
Hope this information may be helpful in your quest for your true ancestors.