I too am a descendant of Nathan Berry or at least I believe I am. I also have Adkins in my family. Mine changed the t to a d.
You can email me directly at firstname.lastname@example.org
and we can try to sort it out.
My paternal grandmother was a Berry and my paternal grandfather was an Adkins. If you have done much research at all you have found that the names intertwined alot.
Hope to hear from you soon.