Hi Jay and Robert. I have John M Clemens living in Dale County, Alabama in Sept. 1860. What was his father's name? The problem is the orthographic changes in the spelling of the last name. Clemens of all spelling are very common and enumerators were loose and free with their interpretation. Where in Georgia was he living in 1850? Haven't found the census yet.
On Fold3, his wife filed for widow pension and it looks like the date is Jany (January) 15, 1863. Confederate Archive, Chap. 10, File No. 26, Page 20. Very faint copy and I had to invert the print to read.
He was Confederate without a doubt so the death year of 1863 Memphis National Cemetery below is a Union soldier. Not the right John Clemens. He was Co. G 33rd Alabama.