I'm unable to really help, but I have a couple of items that may fit in somewhere. I descend from James Alexander, who was probably the son of Moses, Sr. My James, born 1725-1735, was not the same as the James who had wife Ann and died in Rowan County in 1753, although he lived in Rowan County at that time and had at least a couple of sons born there. He died in Spartanburg County, SC, around 1810, possibly a bit earlier, possibly a bit later.
The John Dysart from whom Samuel purchased the land was probably John B. Dysart, who migrated to Bedford County and later Marshall County in TN. Although I haven't found any certain connection between him and the James Dysart who married Ruth Alexander, his father was also named James Dysart and was about the same age. James Dysart, who, along with a son, died in a Revolutionary War battle, is my wife's ancestor through a much-younger son James Young Dysart.
The interesting part is that James Young's son Samuel married Nancy Alexander, whose father may have been Joseph Lowery Alexander; at least Joseph Alexander lived near them, and they named the son who is in my wife's line Joseph Lowery Dysart.
All these Alexanders and Dysarts appear to have migrated to NC from an area around the PA-MA border (actually disputed between the states), and I have been trying off and on, without much success, to tie all of them together because it would be fun to find that our families were connected long ago and, then, went to far-separated areas--hers to northern GA and mine to western TN--until she and I met and reclosed the loop nearly 40 years ago.