Grimoire Encyclopædia

The demon Gremory appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of Spirits, The Book of Oberon, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal

From The Lesser Key of Solomon, Crowley/Mathers edition:

Gremory

The Fifty-sixth Spirit is Gremory, or Gamori. He is a Duke Strong and Powerful, and appeareth in the Form of a Beautiful woman, with a Duchess's Crown tied about her waist, and riding on a Great Camel. His Office is to tell of all things Past, Present, and to Come; and of Treasures Hid, and what they lie in; and to procure the Love of Women both Young and Old. He governeth 26 Legions of Spirits, and his Seal is this, etc.