I found one more tiny tidbit concerning "Scott's Louisiana Cavalry" which was in Clarksville at the fair grounds after the fall of Fort Donaldson.

Sometimes one comes across desired info in strange ways and strange places. This is one of those times: The source is a story concerning a horse's pedigree/genealogy. See what you think. I am still working on finding better.

http://chroniclingamerica.loc.gov/lccn/sn83045774/1921-06-26/ed-1/seq-49/#date1=1890&index=3&rows=20&words=1862+Clarksville&searchType=basic&sequence=0&state=&date2=1922&proxtext=Clarksville+1862&y=11&x=10&dateFilterType=yearRange&page=1

From: The New York Herald 26 Jun 1921