Daniel Rutherford
Daniel Rutherford (3 November 1749 – 15 December 1819) was a Scottish physician, chemist and botanist who is most famous for the isolation of nitrogen in 1772.
Daniel Butterfield
Daniel Adams Butterfield (October 31, 1831 – July 17, 1901) was a New York businessman, a Union General in the American Civil War, and Assistant U.S. Treasurer.