This project is open to men and women around the world who believe they have McClenahan (or variant) genes in the cells.
Obviously, you need to have taken a genealogical DNA test and be a member of FamilyTreeDNA (FTDNA) if you wish to join this project.

For those who wish to know more about their surname, this URL would be a good place to begin.  Just click on the hyperlink  https://www.johngrenham.com/findasurname.php?surname=McClanahan