Wikipedia
Eilistraee, also referred to as "The Dark Maiden," is a fictional deity in the Forgotten Realms campaign setting of the Dungeons & Dragons fantasy role-playing game. In the game world, she is a goddess in the drow pantheon, and her portfolios are song, dance, swordwork, hunting, moonlight and beauty.
Eilistraee's name is pronounced as EEL-iss-TRAY-yee", "eel-ISS-tray-ee", "eel-iss-tray-yee" or "eil-iss-tray-yee".
In the Forgotten Realms campaign setting, Eilistraee is the daughter of Corellon Larethian and of Araushnee (who took the name Lolth after being punished by Corellon), a free-spirited and kind-hearted goddess, with a fiery streak in her personality. When, during her youth, a host of evil deities assaulted Arvandor (her home), Araushnee's treachery almost made her slay her own father. Even though she was cleared from any guilt, Eilistraee chose to share her mother's exile, because she knew that the drow would need her light and help in the dark times times to come. Since after the descent of the drow, in the present era of the setting, Eilistraee tries her best to be a mother goddess to her people and bring them the hope of a new life: she fights to lead them back to the lands of light, helping them to flourish and prosper in harmony with all other races, free from Lolth's tyranny. Hers is an uphill battle, however, as her power is little and she is opposed by all the gods of the Dark Seldarine. But, despite having to overcome many hardships and setbacks, Eilistraee has never given up fighting for her people.
In the 1370s DR, her conflict with her mother over the souls of the drow race ultimately led to the Eilistraee's defeat and disappearance. It lasted for about a century, until the Sundering (circa 1480s DR), when Eilistraee returned to life and to her followers.