Donna Withers

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Donna Withers (nee McCoy) was the daughter of David Andrew and Eleanora McCoy, as well as the sister of Leonard McCoy. By 2255, Donna was residing on Centaurus with her husband Fred Withers, and the couple cared for their niece, Joanna McCoy, while her father was away as a doctor in Starfleet. (TOS novel: Crisis on Centaurus).