WM. L. YANCEY, statesman, a native Georgian, was recognized as the most radical propagandist of the doctrine of secession.  As early as 1850 he "advocated a separate and district orbit for the independent star of Dixie." He led the democrat bolt in the Charleston Convention of 1861, and afterwards became a member of the Confederate Senate.  Mr. Yancey was one of the most powerful orators of his day and was to the pro-slavery cause at the South what Wendell Phillips was to the abolition movement at the North.  He died in 1863 while still at the zenith of his fame.
     Many other notable authors of Georgia should be mentioned.  Col. Isaac W. Avery, author of a valuable "History of Georgia" from 1850 to 1881.  Judge Garnett Andrews wrote "Reminiscences of an Old Georgia Lawyer."  Hon. A. H. Chappell published in 1874 "Miscellanies of Georgia."  Col. E. Y. Clarke wrote an excellent sketch of Atlanta.  Hon. Thomas R. R. Cobb, later brigadier-general in the Army of the Confederate States, who on Dec. 13, 1862, sealed his devotion to the South with his life, published in 1858, an "Historical Sketch of Slavery."  George R. Gilmer wrote an instructive and interesting work on the Georgians.  Judge E. J. Harden wrote adn published a "Life of Governor George M. Troup."  Stephen F. Miller published in 1858 the "Bench and Bar of Georgia."  Hon. Wm. A. Stiles wrote before the Civil war a scholarly work entitled "History of Austria."  William H. Sparks published "Reminiscences of Fifty Years,"  a thrilling book of biographical history.  Rev. George White, of Savannah, did the state an invaluable service in his "Statistics of Georgia," and "Historical Collections of Georgia," the latter published in 1854.
Source: The Standard History of Georgia & Georgians - Vol. III - By Lucian Lamar Knight - Publ. The Lewis Publishing Company - Chicago : New York - Publ. 1917 - Page 1764