Sophie Winton was a Manticoran citizen and a member of the House of Winton in the 16th Century PD.

She was the second child and only daughter of Crown Prince Edward Winton and his wife, Cynthia Gundersen-Winton. Her older brother was Richard Winton, who became the crown prince when their grandfather, King Michael I, abdicated and their father ascended to the throne.

In 1543 PD, however, Richard was killed in the destruction of his ship during the battle against the Volsung Mercenaries, making Sophie the new crown princess. (MA2)

Shortly thereafter however, there was a terrible boating accident on Jason Bay: Sophie's hydroplane ran into small object and capsized. She and her father, who attempted to rescue her, were both killed in the subsequent explosion of escaping hydrogen. (MA3)