Pages 782 through 787 of Volume II of "The Military Annals of Tennessee: Confederate," edited by John Berrin Lindsley, and orginally published in 1886 at Nashville, TN, has a sketch of the unit by Austin Peay, who served in the unit. As the two volumes have been reprinted by Broadfoot, it is usually easy to find the set. I have my own set if you need any more help. I have Nunn ancestors from Trigg County, KY. Where are yours from?
Greg
Murray, KY