I've gone through the notes I could find and think I located this fellow. A former free black named Thomas Ashford applied for and received a pension from the state of Louisiana for his Confederate service. He claimed that he had accompanied a company of the Orleans Guard Battalion to Shiloh and there had carried a badly wounded member of Company D (which was from his native St. Martin Parish) from the field. Later he said he was a watchman on the gunboat "Cricket," Captain Sud, on Bayou Teche and the adjoining lakes. He ended the war working on fortification around Alexandria. I know of no gunboat by that name, nor have I found any record of such a naval officer.