Orphne

In Greek mythology, Orphne (Ὀρφνή, from ὄρφνη) was a nymph that lived in Hades. She was also known as Styx (Στύξ) or Gorgyra (Γόργυρα, from γόργυρα). With Acheron, she mothered Ascalaphus.

Orphne also seems to be one translation of the name of the Roman goddess Caligo (Darkness).