Cordelia Naismith Vorkosigan was a citizen of Beta Colony, and an officer in the Betan Astronomical Survey. After falling in love with enemy Admiral Lord Aral Vorkosigan, she moved to Barrayar to marry him and became a Barrayaran subject. As Lady Vorkosigan, she became Regent-consort of the Barrayaran Imperium, and later Countess Vorkosigan. She was the mother of Miles Naismith Vorkosigan and his clone Mark Pierre Vorkosigan. After her husband retired from Barrayaran politics, she was appointed Vicereine of the planet Sergyar. While it is true that her husband was also appointed Viceroy at the time, she is Vicereine in her own right and not as his wife.