The demon Crocell appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of Spirits, Pseudomonarchia Daemonum, and The Lesser Key of Solomon
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Forty-ninth Spirit is Crocell, or Crokel. He appeareth in the Form of an Angel. He is a Duke Great and Strong, speaking something Mystically of Hidden Things. He teacheth the Art of Geometry and the Liberal Sciences. He, at the Command of the Exorcist, will produce Great Noises like the Rushing of many Waters, although there be none. He warmeth Waters, and discovereth Baths. He was of the Order of Potestates, or Powers, before his fall, as he declared unto King Solomon. He governeth 48 Legions of Spirits. His Seal is this, the which wear thou as aforesaid.
This demon was of the angelic order Power