Confederate unknowns buried at LaFayette are almost certainly casualties from the attack of June 24, 1864. According to reports, these would include men from Neely's Brigade. Armistead's Regiment was also known as the 16th Confederate Cavalry.
http://www.hmdb.org/marker.asp?marker=13177
http://www.northwestgeorgianews.com/catwalkchatt/lifestyles/local_a_e/remembering-s-battle-of-lafayette/article_9de96ac2-e58f-11e3-ae8a-001a4bcf6878.html
http://tommcknight.com/civilwar/ArmisteadsCalvary/ArmisteadCalvaryHomePage.htm