Arwen Undómiel

Arwen is the daughter of Elrond of Rivendell and Celebrían (daughter of Galadriel). Born among the last generation of High Elves remaining in Middle‑earth during the Third Age, she is a member of the Half‑elven lineage, descending from lineages that include Lúthien. Her life centers on her choice to give up the Elvish gift of immortality and remain in Middle‑earth as a mortal in order to wed Aragorn, an event that reunites the lines of the Half‑elven and preserves Elvish and human bloodlines in the returning kingship. Key life moments cited in sources include her meeting and betrothal commitment with Aragorn on Cerin Amroth, sending a black banner to Aragorn before the Paths of the Dead, marrying him in Minas Tirith after the War of the Ring, and living until age 2,901, dying one year after Aragorn.

Sources describe Arwen as 'extremely beautiful' and the most beautiful of the last generation of High Elves in Middle‑earth, hence her epithet Undómiel, 'Evenstar'. Narrative details in the provided material note her possession of an Evenstar necklace with a white stone, which she later gives to Frodo, and mention a black banner worked with emblems, mithril, gems and gold that her brothers deliver to Aragorn.

In the canonical literary summaries provided, Arwen's significance is primarily genealogical, moral, and symbolic rather than a catalogue of supernatural powers: her central 'ability' is the moral choice to renounce Elvish immortality for mortal life. The supplied sources emphasize that the book narrative does not attribute the Ford of Bruinen flood rescue to Arwen (that role in the book tradition belongs elsewhere), while the Peter Jackson film adaptation expands her role and depicts her as rescuing Frodo from the Black Riders by summoning a flood — an adaptation‑specific attribution rather than a book claim.