Chronicles of Nirn
Nocturnal, who is also known as the Night Mistress, the Mistress of Shadows, The Unknowable, Daughter of Twilight, The Mistress of Mystery and The Saint of Suspicion is the “Daedric Princess” whose sphere is the night and darkness.
Nocturnal possesses several realms throughout Oblivion. One such realm, Shade Perilous was once accessible through the Battlespire, but the realm has been isolated since the Battlespire’s destruction. The Twilight Sepulcher is the temple to Nocturnal which houses the Ebonmere, a conduit to the Evergloam, which is guarded by the Nightingale Sentinels.