Arayl
Arayl: A servant of the demon-king Raysiel, Arayl holds the rank of chief duke. He has forty lesser spirits beneath him. Arayl is a demon of the night, and he will only appear during the hours between dusk and dawn. His name and seal appear in the Ars Theurgia, a book that deals with a variety of spirits connected with the points of the compass. Through Raysiel, he is connected with the direction north.
Source : Dictionary of Demons by Michelle Belanger
SOURCE:
The Dictionary of Demons written by Michelle Belanger