Shaina Herrmann

“In popular usage Grammatica or Grammaria slid into the vague sense of learning in general; and since learning is usually an object both of respect and suspicion to the masses, grammar, in the form grammary comes to mean magic. Thus in the ballad of King Estmere, ‘My mother was a western woman learned in grammarye’. And from grammary, by a familiar sound-change, comes glamour—a word whose associations with grammar and even with magic have now been annihilated by the beauty-specialists.”
― C.S. Lewis, The Discarded Image: An Introduction to Medieval and Renaissance Literature