The demon Ronové appears in the grimoires The Discoverie of Witchcraft, Pseudomonarchia Daemonum, The Lesser Key of Solomon, and Dictionnaire Infernal
From The Lesser Key of Solomon, Crowley/Mathers edition:
The Twenty-seventh Spirit is Ronove. He appeareth in the form of a Monster. He teacheth the Art of Rhetoric very well, and giveth Good Servants, Knowledge of Tongues, and Favours with Friends or Foes. He is a Marquis and Great Earl; and there be under his command 19 Legions of Spirits. His Seal is this, etc.