Nysseia

Nysseia, the XXXXXX, XXXXXXXXXXX, is one of the Aiyu-Atma. She is the consort of Aurhion and the mother-goddess of the elven pantheon, the Aeiuradris, as well as of the elven race itself, which she created from a drop of her blood. Epheos is her sister, as was Khreus, mother of the oceans. Elvish legend tells that the stars of the night sky are tears which she shed for Khreus, who was destroyed during the old gods' war against primordial chaos, and for whom the moon was made by Aurhion as a funeral-vessel to set among the stars. 
Nysseia is the name by which she is known to mortal men, originating as a rendering of her name (or rather a shortened version) in proto-archaic Tuvai. The elven rendering might more accurately be "Niossae," and it would only be a part of the longer name by which the elves call her, since their tradition is to treat sacred epithets as a part of the deity's proper name and append them accordingly.