Pluto
The name Pluto was proposed by Venetia Burney (later Venetia Phair). She was an 11-year-old schoolgirl in Oxford, England then. Venetia was interested in classical mythology and astronomy. The name was of the Roman god of the underworld. She thought it was a good name for a dark and cold world. She suggested it when she was talking with her grandfather Falconer Madan. He was a former librarian at the University of Oxford's Bodleian Library. Madan passed the name to Professor Herbert Hall Turner. Turner told this proposed name to the astronomers in the United States.