Thomas Bulfinch (1858). “The Age of Chivalry: Or Legends of King Arthur, "King Arthur and His Knights", "The Mabinogeon", "The Crusades", "Robin Hood", Etc”, p.19
Nicholas Culpeper (1832). “Culpeper's Complete Herbal, and English Physician ... To which is annexed, The British Florist, or Flower garden displayed, etc. With plates, including a portrait”, p.336