Rosemary, I do not believe I have much that will help you.The only Jonathan in my family is my gg uncle born around 1852.This was about the same time as the Jonathan who left Randolph or Guilford County around 1852.
My Jonathan was the younger son of Joseph Alexander and Anna (Hamilton) Alexander. This Jonathan is a real mystery to me. He undoubtedly left Randolph as a young man because absolutely no will, land, census record shows him in NC after he 1870. His father Joseph Alexander died in Randolph County on May 5, 1867.
The message posted by Mac has reopened my quest after 5 year or so.I have basically ruled out almost every Alexander in Randolph County in the 1800's as a father of Joseph.
Please keep me in mind if you happen upon any Randolph or Guilford County NC Alexander in the future.