Spritz

Spritz was a member of a primitive culture who was taken from her planet by Jenkins, member of the Rulers of the Universe. Later, she was framed for his murder. River Song made the Rulers believe she was dead and set her free to flee and see the universe. (AUDIO: I Went to a Marvellous Party)

Later references
While hiding her true identity from the Eighth Doctor, River Song adopted her name. (AUDIO: The Rulers of the Universe)