Théodwyn (TA 2963 - TA 3002) was notable as the mother of Éomer and Éowyn. Théodwyn was a woman of Rohan. She was the sister of Théoden and the youngest child of Thengel and Morwen Steelsheen. She was married to Éomund of Eastfold in TA 2989. Her son Éomer was born in 2991, and her daughter Éowyn in 2995. She lived with Théoden. Éomund was slain in TA 3002. Not long after that Théodwyn died of illness. Théoden raised her two children after her death.