The Lady of Mercy and Mourning, sister of Mandos and Lorien. Nienna weeps for every wound that Arda has suffered at Morgoth's hands, and her tears bring healing and endurance rather than despair. She dwells alone on the western borders of the world. Gandalf (Olorin) was her pupil before he came to Middle-earth, and from her he learned pity and patience, qualities that defined his mission among the free peoples.