This may be something you already know, but I thought I should pass it along;

Co "K" was made of men from Eutaw, Limestone County, Texas. The town is now gone except for the cemetery. Kosse, Limestone County is the closest town (about 3 miles from the site of Eutaw). There is a State of Texas historical marker which mentions your ancestor's regiment. (see link to photo and posting)

http://www.civilwaralbum.com/misc18/eutaw1.htm