sentences:  McKnight maintained a steady surgical practice and held his professorship until his death from pneumonia, the result of an old war injury, on November 16, 1791 at age 41.McKnight was interred at the corner of Wall Street and Broadway in Lower Manhattan, just beyond the gates of the historic Trinity Churchyard, next to his wife, Mary, and her father.They left four daughters and one son, John Morin Scott McKnight, who also became a physician.