It is a very popular belief that cards were invented in order to amuse King Charles VI of France, at a time when the monarch was mentally unstable. This legend, however, like so many pretty stories of the past, has no foundation in fact…

Charles Platt, Card Fortune Telling: A Lucid Treatise Dealing with All the Popular and More Abstruse Methods, W. Foulsham & Co, London, 1878.