Asoriel
Asoriel: A mighty duke ruled by the demon Cabariel. Asoriel appears with fifty attending spirits.
He is one of a number of demons associated with the points of the compass as defined in the Ars Theurgia. Both Asoriel and his immediate superior serve in the hierarchy of the west, underneath the demon-king Amenadiel.
SOURCE:
The Dictionary of Demons written by Michelle Belanger