Éowyn was the sister of Éomer and the only daughter of Éomund and Théodwyn (sister of King Théoden). She was also known as Lady of the Shield-arm and the White Lady of Rohan.

She was born in TA 2995, and when her mother died, she and Éomer were sent to Edoras to spend their childhood living with their uncle Théoden.

Éowyn blossomed in Edoras, and became skilled with horses, and sword fighting. But she was irritated by her position, and brooded when she was left to wait upon her sick uncle while Rohan fell into darkness. And thus, she resolved to die honorably on the field of battle, as a shield-maiden.

On March 10th of the year 3019 of the Third Age, Éowyn rode with the Rohirrim (and Meriadoc Brandybuck) to the Pelennor Fields, disguised as a Rider of Rohan. On March 15th of that year, under the alias Dernhelm, she fought in the Battle of the Pelennor Fields.

It was in that battle that she rose up against the Witch-king of Angmar, and defeated him, with the assistance of Meriadoc. She was then severely wounded, and sent to the Houses of Healing. There, Aragorn healed her.

She and Faramir fell in love there, and Éowyn gave up all thought of battle and death. They were married in the same year, after the downfall of Sauron.

Éowyn decided to become a Healer rather than a fighter, and she and Faramir lived peacefully in Emyn Arnen for the rest of King Elessar’s reign.

It appears that she and Faramir has at least one child, a son named Elboron. The date of her death and whether or not she had any other children are unknown.