Mary Catherine Winchester (née Campbell) (born December 5, 1954) is a retired hunter, the daughter of Samuel and Deanna Campbell, the wife of John Winchester, and the mother of Dean and Sam Winchester. She was killed by the demon Azazel exactly six months after Sam was born, which spurred John into becoming a hunter to kill Azazel in revenge and raising their sons as hunters as well. 33 years later, after Dean reunited God and the Darkness, she was resurrected by the latter as a thank-you gift for Dean.