Lúthien's romance with the mortal man Beren is considered the chief of the Silmarillion tales by Tolkien himself; he called it the kernel of the mythology. Elrond was Lúthien's great-grandson and Aragorn was descended from her via Elros and the Royal Family of Númenor. She is described as the Morning Star of the Elves and as the most beautiful daughter of the one god, Ilúvatar. Beren was the son of Emeldir and Barahir, a Man of the royal House of Bëor of Dorthonion.