December 20, 2016 On this day in history, 1806, Andrew Jackson dueled with famed marksman Charles Dickinson, killing him, after Dickinson insulted Jackson in a variety of ways including calling Jackson’s wife of bigamist. This latter point was a sore spot for Jackson as his wife really had married him while she was still married to her former husband. She had separated from her first husband, Captain Lewis Robards, in 1790 and subsequently moved in with Jackson and began calling herself his wife. The two were soon officially married but this was later nullified by the fact that she and Captain Robards had never actually finalized their divorce, in terms of doing the paperwork, though the community itself considered them divorced. She had to remarry Jackson in 1794 once the divorce with Captain Robards went through.