A Glass of Wine with Caesar Borgia — From left: Cesare Borgia, Lucrezia Borgia, Pope Alexander VI, and a young man holding an empty glass. The painting represents the popular view of the treacherous nature of the Borgias—the implication being that the young man cannot be sure that the wine is not poisoned
Photo Credit: By John Collier (1893) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=2901952