What is the origin of the word “Cicerone”?

Cicerone is an English word referring to "one who conducts visitors and sightseers to museums and explains matters of archaeological, antiquarian, historic or artistic interest." A Certified, Advanced, or Master Cicerone possesses the knowledge and skills to guide those interested in beer culture, including its historic and artistic aspects. These titles now designate a person with demonstrated expertise in beer who can guide consumers to enjoyable and high-quality experiences with great beer.