Éowyn is a fictional character from J.R.R. Tolkien's epic fantasy novel, The Lord of the Rings. She is a noblewoman of the Rohan kingdom, known for her bravery and strong will. Éowyn is the niece of King Théoden and plays a crucial role in the story, particularly in the battle against the forces of Sauron. Throughout the narrative, Éowyn disguises herself as a man to fight in the war, seeking to prove her worth and escape the constraints placed on women in her society. Her character embodies themes of courage, sacrifice, and the desire for freedom, ultimately leading to her famous confrontation with the Witch-king of Angmar.