I am from Saint Austell, my mum and grandmother are from Saint Blazey / Par, so very mid Cornwall. Have you moved to Atlanta from Cornwall or was it your parents who emigrated? I do not know anyone on my mothers side that have done their ancestry so I am actually quite clueless about that branch of my family tree. Perhaps something for me to do at some point.
I only moved to Plymouth as well so literally on the border with Cornwall. Plymouth being a big city for us Cornish people….. I do not know Atlanta but a quick google search shows its population is twice that of Plymouth! :)