David, Sharon, anyone from this family still following up,
Probably, I can't help you directly, but I'd like to swap information, anyhow. I'm led to believe that your Arthur, Alzara, Matthew, born 1815, etc.were related to another Matthew Alexander, born about 1813 in GA, died around 1860-1870 around Atlanta.
I would like to explore the possibility that they are all related to my Alexander family (James, from Spartanburg, SC, in the latter part of the 18th century, was earlier situated in Anson/Rowan in NC). I have nothing concrete, but there are lots of circumstances and coincidences that suggest a relationship.