Aaron Burr was the third vice president of the United States, however his claim to fame is dueling with Alexander Hamilton, and ultimately killing him. But Burr was more than just a good shot. He was actually a fascinating historical figure, and there is probably plenty you didn’t know about him. For example:

1. Burr was active on the battlefield in the Revolutionary War

Unlike a number of U.S. Founding Fathers, Burr put in time in the military during the Revolutionary War. After attending Princeton as a teenager, he was studying theology in Connecticut when the war broke out. In 1775, Burr joined the Continental Army, and before long he was performing heroic feats at the Battle of Quebec and then in the army’s retreat north across Manhattan. Before leaving the army due to health reasons, Burr had achieved the rank of lieutenant colonel.

2. He can be credited with founding Chase bank

In 1799, Burr founded a water company called “The Manhattan Company.” As part of its charter, The Manhattan Company was able to lend any of its excess capital. Before long, it became clear that the water company was just a ruse devised to fashion a loophole that allowed Burr to create a bank. The Manhattan Company only provided water for a short period of time; but the “Bank of the Manhattan Company” quickly became an active financial institution that (following mergers) ultimately became JPMorgan Chase.

3. Burr was arrested for treason

After killing Hamilton, Burr became persona non grata in New York. He moved to what was then the western frontier — we’d now call it the eastern part of the Midwest — and began…well he began something. His exact intentions remain unclear, but, as History.com notes, speculation includes his plotting “the establishment of an independent republic in the American Southwest”. Burr was arrested for treason in 1807. He was acquitted on trial.

4. In some ways, he was ahead of his own time

Burr was a unique American statesman in many ways, and he is also noteworthy in terms of his progressiveness. For one thing he was an early feminist, who championed women’s suffrage a century before the 19th amendment and advocated for women’s education. In 1784, while serving in the New York State Assembly, Burr attempted unsuccessfully to abolish slavery.

5. He presided over the only Supreme Court impeachment trial in history

Samuel Chase, who had signed the Declaration of Independence, was appointed to the Supreme Court during the Washington administration. In a move that may have had political motivations, the Senate impeached Chase in 1805. As Vice President, Burr presided over the impeachment proceedings, and gained accolades for his evenhandedness. Chase was ultimately acquitted and remained on the court until his death.

6. Alexander wasn’t the only Hamilton family member Burr had run-ins with

Years before he ever fought Alexander Hamilton, Burr actually dueled with Hamilton’s brother-in-law, John Barker Church. That duel ended in a tie.

More than 30 years after the Church duel (and 25+ years after the Hamilton duel), Burr and his second wife got divorced. Her divorce lawyer? Alexander Hamilton, Jr.