This article or section is a stub. You can help by expanding it. Nienna is one of the fourteen Valar assigned as the rulers of Arda and a fictional character in Tolkien's legendarium. She was an Ainu, one of the Aratar and a Vala who was responsible for the mercy and grief spread across Arda. She was the sister of Mandos and Irmo and had no spouse. Her part in the Music of the Ainur was one of deep sadness, from which grief entered the world at its beginning.[1] She had dominion over the Halls of Nienna, which were on the western edge of Valinor, looking over the sea.
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