Cynthia Ann Parker was the daughter of Silas & Lucy Parker. She was captured by the Comanche and was the mother of Quanah Parker. This story is told in the book "To Ride The Wind by Lucia St. Clair Robson." I have the book if you need any more information, just let me know. It names some of her other relatives, Grandfather John Parker, her cousin Rachel Plummer, etc. Hope this helps. Janis