You may be asking about W. W. Yergin of Dawson's 19^th Arkansas Regiment. The man in the 4^th Georgia State Guard Battalion is W. D. Yeargan, age 41 in 1860, who lived near Henley's Store in Hart County GA.

These are two different men. If you are really interested in an Arkansas resident, you may be better served to post your query on the Arkansas message board.