There is a reference to Captain Bowles Cavalry in the Confederate record of the battle of Columbus/Belmont being attached to Lt. Col Miller's Mississippi Cavalry. They were one of the units on the wrong i.e. Missouri side of the river.

http://books.google.com/books?id=Su12AAAAMAAJ&pg=PA295&lpg=PA295&dq=captain+bowles&source=bl&ots=jGz4-z1r7X&sig=8hpgTtDTPlnhnWLsWEwBIDIbT_s&hl=en&ei=hWc3Ttf8BI-utwej1-yWAw&sa=X&oi=book_result&ct=result&resnum=3&ved=0CBsQ6AEwAjge#v=onepage&q=captain%20bowles&f=false

How this all fits is getting to be a bigger mystery... but right name right part of country and right time...

John R