Ryan Dupree also placed virtual flowers on Evans' Find A Grave memorial. He knows quite a bit about the 1st Alabama Cavalry. According to the following page from his web site, Evans apparently enlisted under an assumed name (not unusual for Southerners joining the Union army). His records should appear under the name William A. Andors/Andoes.

http://www.1stalabamacavalryusv.com/Roster/Troopers.aspx?trooperid=37