Orphne

In Greek mythology, Orphne /ˈɔːrfniː/ (Ancient Greek: Ὀρφνή, from ὄρφνη, "darkness"), also known as Styx /ˈstɪks/ (Στύξ) or Gorgyra /ˈɡɔːrdʒərə/ (Γόργυρα, from γοργύρα, "underground drain"), was a nymph that lived in Hades. With Acheron, she mothered Ascalaphus.

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