I am also a descendant of John and Marion McMillan. He is my ggggg grandfather. My gg grandfather Andrew Jackson McMillan left Allegheny county, NC in the 1880's and headed out West to Colorado. My family still lives in Colorado.
I found Claude E. Wells (Cwells4944@aol.com
) to be well informed about John and Marion. He was also in contact with a geneologist in Scotland trying to find their parents. Perhaps if you have cousins in Ashe County you know some of the stories that have been passed down about John and Marion. How Marion and John eloped to America, how Marion went to the beds of her family members the night they left, put a candle to up to their faces so she could see them one more time before she left.
I was amazed to hear that those stories have survived for two hundred years.
Anyways, I hope I haven't missed you. YOu are heading to Scotland quite soon, I understand.
If you know any other McMillan lore, please let me know. It puts leaves on our family tree.