The term 'Duel Personality' refers to the two people involved in the famous duel between Alexander Hamilton and Aaron BURR. The first person is Aaron BURR, who is a four-letter word spelled BURR. He was the third Vice President of the United States and a prominent political figure in the early 19th century. The SECOND person is Alexander Hamilton, who is a six-letter word spelled SECOND. He was an American statesman, lawyer, and one of the Founding Fathers of the United States. The two men famously dueled on July 11, 1804, in Weehawken, New Jersey, resulting in Hamilton's death. The full name of Aaron BURR is nine letters long and spelled AARONBURR.