Since “Brown” is such a common surname, it should not be surprising that there were at least four UNRELATED Brown families in Culpeper Co., VA in the late-1700s. These families included DNA “Group 10,” “Group 33,” “Group 47” and “Group 55.” There was even a John Brown in “Group 47” who married a Phoebe Brown in “Group 10” (and there is a male Brown DNA donor in the Brown Genealogy Society DNA testing project who is a descendant of that “Group 47”/”Group 10” Brown couple). Recently discovered information shows that an apparent member of “Group 33” married into what appears to be part of the same overall Coleman family as the Elizabeth Coleman who married Daniel Brown “II” of “Group 10.” Each of these two unrelated Brown families had one or more men who were named Coleman Brown. As such, one has to be very careful to keep these two families properly “defined and segregated” when attempting to determine the correct “family trees.”
http://archiver.rootsweb.ancestry.com/th/read/MDCHARLE/2011-08/1313863356