I don't trust anything on that site without checking it out - at least the entry is under "Trivia" - I am going to look into THIS entry as well:
"Years later, [Burr] returned to New York City to practice law and was tried and acquitted for his role in the duel. He died in 1836 in Staten Island, New York, having never apologized to Hamilton's family or shown any remorse for ending Hamilton's life.
Perhaps the best account of the event was catalogued in the writings of a local stable-boy, Jake Simons, who secretly watched the event from afar. His journal was later published, although his writings and record of his business are now lost."
Where? I searched for "Cheney" and didn't find anything on that page.