Arnochap
Arnochap: A demon tied to the west wind. According to the Peterson translation of the Sworn Book of Honorius, Arnochap functions as a servant of Harthan, the king of the spirits of the moon. Among his powers, he is able to cause rains and to help people prepare for journeys. The angels Gabriel, Michael, Samyhel, and Atithael have power over him.
SOURCE:
The Dictionary of Demons written by Michelle Belanger