Clarissa "Clara" Harlowe Barton (December 25, 1821 – April 12, 1912) was a pioneering nurse who founded the American Red Cross. She worked as a hospital nurse in the American Civil War, and as a teacher and patent clerk. Barton is noteworthy for doing humanitarian work at a time when relatively few women worked outside the home. She had a relationship with John J. Elwell, but never married.