Queen of the Stars, Queen of all the Valar. Wife to Manwë, King of Valar, leader of Anuir.

    With Manwë dwells Varda, Lady of the Stars, who knows all the regions of Eä. Too great is her beauty to be declared in the words of Men or of Elves; for the light of Iluvatar lives still in her face.
    (Valaquenta, The Silmarillion)

    Of all of the Great Ones who dwelled in this world, the Elves held Varda most in reverence and love. They named her Elbereth.