A symbol of irony in the cask of amontillado is that the names Fortunato can mean fortunate. It is ironic because he is about to encounter the worst possible thing that can happen which is not fortunate. ("THE thousand injuries of Fortunato I had borne as I best could; but when he ventured upon insult, I vowed revenge.") This states that his name is fortunato and that Montresor will soon get his revenge. The irony of his name is that it is unfortunate what happened to him.