Albhadur
Albhadur: A chief duke in the hierarchy of Raysiel, an infernal king of the north. Albhadur has fifty lesser spirits that minister to him, and he is connected with the hours of the day. Described as an aerial spirit, Albhadur has a nature that is more subtle that physical, and he is not easily perceived with the naked eye. The Ars Theurgia recommends that he be viewed with the help of a stone crystal or scrying glass.
SOURCE:
The Dictionary of Demons written by Michelle Belanger