That's a lot of great information you've shared. I'm fairly new to researching my Pyron line and I'm hoping that you can share some other information with me.
Thus far, my line ends with William Montgomery Pyron (b. 11 Jan 1821 in Mecklenburg Co., NC, d. 24 Aug 1897 in Chilton Co, AL).
Next in line was Marcus Alexander Pyron (b. 3 June 1843 in Mecklenburg Co., d. 31 Jan, 1921 in Elmore Co., AL).
Followed by Edward C. Pyron (b. 30 Apr 1883 in Elmore Co., d. 20 May 1922).
Followed by my grandfather, Ralph Edward Pyron (b. 17 Jan 1911 in Jefferson Co. AL.).
Looking at your detailed list, I don't see William Montgomery Pyron, though he lived in the same Mecklenburg Co. and seemingly lived for a time in Greene Co., GA before moving on to Alabama. He married twice. First to Unice Armelia Williams and second to Martha Jane Cogburn Edge (widow of George William Edge).
Do you have any information on this Pyron and how he fits into this line you detail?