The record I mentioned in my previous message, at the Louisiana Archives, was actually post war. It was the Confederate pension papers of a sailor indicated as having been on the CSS PONTCHARTRAIN. I am trying to collect all this data, including pension papers, when I purchase copies, and compile the data into proper biographical information on the sailors.
Dunnington was later attached to Semmes Naval Brigade, 1865, and also held dual Army/Navy commissions then. His earlier dual commission is mentioned in the ORN. In Semmes Brigade he held the rank of Major, in the First Regiment. This is all shown in rolls 704, 705 and 725 of publication M1091 - General Staff, First and Second Regiments, Naval Brigade, Army of Tennessee. Credit goes to Pamela Hain who provided me with this data. There is so much data out there that can be found in very obscure sources. It is just a matter of knowing where to look.