Mary, I don't have much more on your line.What little I have, you've probably already found.Miley and Johnston (sp?) married on December 08, 1819.I don't know anything about their children, nor do I have any census records for them.Miley is mentioned in her father's will, which was probated in 1825, in Cumberland Co., NC (Book B, p.135).The wording seems to indicate that she was still close at hand when he wrote it : ..."After the death of my wife or her enter marriage I give to my daughter Mila Mathes (sp?) one linnen wheel together with what she has had"...it goes on to mention her again and the spelling of her name seems to be Mily Mathews. He wrote it in January of 1825.I don't have anything about your Matthews family, nor do I know if any of the Coffields during the period of interest to you moved to Georgia. Wish that I could be of more help.