Ambri
Ambri: One of twelve dukes specifically named in association with Caspiel, the infernal Emperor of the South. Ambri's name and seal appear in the Ars Theurgia, a book that teaches how to summon and compel a series of “aerial spirits” connected to the points of the compass.
Ambri and his companions are reputed to be truculent and difficult to work with. If charged in the name of their direct superior, however, they can supposedly be bent to the conjuror's will. Ambri rarely manifests alone as he has two thousand two hundred and sixty lesser spirits under his command.
SOURCE:
The Dictionary of Demons written by Michelle Belanger