The death mask of Aaron Burr, who died at age 80 in 1836. Most famous for killing Alexander Hamilton in a duel, Burr was Vice President under Thomas Jefferson and was then charged with treason in 1807. His treason charge came from an attempt to support an uprising against the Spanish in the southwest. He was acquitted and most historians do not think there was very much evidence of his guilt. He lived out much of the rest of his life abroad, moving around Europe, but returned to New York at the end of his life.