I believe that it is the same person. I have found another reference to this in another article from a different edition of the same newspaper, which I was transcribing a little earlier:

"[H]e has been represented as a bounty-jumper, a deserter before the enemy, and therefore a coward. But he speaks of himself as having done deeds of bravery, and affirms that there is kept in Washington a Confederate flag with the name of Barreau inscribed upon it, as he captured it himself in battle from an Alabama regiment."