The demon Naberius appears in the grimoires The Discoverie of Witchcraft, The Book of Spirits, The Book of the Office of Spirits, Three Books of Occult Philosophy, The Grand Grimoire, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Twenty-fourth Spirit is Naberius. He is a most valiant Marquis, and showeth in the form of a Black Crane fluttering about the Circle, and when he speaketh it is with a hoarse voice. He maketh men cunning in all Arts and Sciences, but especially in the Art of Rhetoric. He restoreth lost Dignities and Honours. He governeth 19 Legions of Spirits. His Seal is this, which is to be worn, etc.
The spell For the discovery of a treasure invokes this demon.
This demon possibly derived from the diety Cerberus
Timeline of related events
1531Publication of Agrippa's Three Books of Occult Philosophy (lists this demon)
1536Publication of De praestigiis daemonum (lists this demon)
1563First known appearance of The Book of the Office of Spirits (lists this demon)
1584Publication of The Discoverie of Witchcraft (lists this demon)
1641Publication of the Lesser Key of Solomon (lists this demon)