The author known for writing the Aeneid in Roman mythology is Virgil. This epic poem serves to glorify Rome’s origins and its destined dominance. It tells the story of Aeneas, a Trojan hero, who travels to Italy and becomes an ancestor of the Romans. The work emphasizes themes of duty, piety, and the struggle against fate, while also intertwining Roman ideals with Greek influences. Virgil's "Aeneid" is considered one of the cornerstones of Western literature.