Eonwë:

One of the few maiar named in the surviving records of the Elder Days and the First Age of the Sun in Middle-Earth, Eonwë was the herald of Manwë. Some of the deeds he was recorded as doing included the following: He carried the Doom of Mando to the departing Noldor, took terms to Sauron after the Chaining of Melkor, and instructed the Edain before their departure for Númenor. After the end of the First Age of the Sun, we don't hear any more about him.