There are two "clans" of Williamsons in and from Columbus County, NC (SENCGS.ORG). One descended from Lewis Williamson (before 1750-about 1799), the other from John Williamson (before 1755-after 1810). Were they related? In 1779 a Lewis Williamson and a John Williamson signed a petition to divide Bladen, Duplin and New Hanover Counties. Both held land between the Little and Big Coheary Creeks, just north of present day Ingold, Sampson County, NC. Recently completed Y-chromosome DNA profiles prove that John and Lewis shared a common ancestor. They could not have been father and son, but could have been brothers or cousins.