Clinch's 4th Georgia Cavalry, "The Wiregrass 4th," from August 7, 1861 to April 30, 1865. It exclusively defended Georgia, including opposition to Sherman's "March to the Sea" across Georgia.
They were from the coastal region of southeastern Georgia. "The only formal military forces remaining in the area were several independent companies of partisan rangers or cavalry mustered for state service and three excess mounted companies which had been spun off from the 26th (formerly 13th) Georgia Volunteer Infantry and were left behind when that regiment went north in the early summer of 1862 to join the Confederate forces being gathered in Northern Virginia to confront the growing Federal armies located around Washington DC." " In early 1862, Confederate military authorities organized these various mounted companies into "The Cavalry Command South of the Altamaha River"" Which eventually became the 4th, after several re-organizations and re-namings and the addition of more companies, and then even more companies.
Clinch's 4th Georgia Cavalry
The original companies were recruited from southeastern Georgia (Camden, Glynn, Ware, and Wayne Counties) - part of the southeastern US known as the "Wiregrass Region" http://www.glynngen.com/military/civilwar/4thga/DLClinch.htm
Wayne Rangers from Wayne and Ware Counties Georgia