Moses Ball, Sr. - Sr. or III, discrepancy in birthdates & location, and discrepancy in name of mother?

Hi, I've run into this ancestor as my 12th cousin once removed, and am having difficulty reconciling a few discrepancies. I've put them in bold in the "About" section.
Moses Ball, III

Find A Grave Memorial# 88561029 gives burial location Chadwell Station Baptist Church Cemetery, Ewing, Lee County, Virginia, USA
Plot: Buried on top of the hill in front of Chadwell Station Church. It lists him as Moses Ball, III. I'm trying to figure out how many Moses Ball men there are in this lineage and who is I, II, III, IV, etc.....

Can anybody help me with this!? I don't have original source documents as I hadn''t been researching this distant of ancestors very much. This one intrigues me and I'd like to get it figured out.

Thanks!
Carol Vernice (Eads) Ball (yes, I married a Ball, but this ancestor is through my paternal line! I may keep searching and discover I've married my own relative/Laughing out Loud!