...a few years ago had a duel with one Leavenworth, of New-York, in Canada, whom he wounded, and at a later time, while editing the Courier in New-Orleans, had another duel with Nixon, the editor of the Crescent , and in which Breckinridge was wounded. The detachment then fell back toward Port Gibsor with the prisoners, traversing a broken country in the night, and skirmishing with the enemy all the way A...