Casandra

Cassandra received the power to foretell the future from the god Apollo. Apparently, Apollo instructed the mortal woman and taught her about the art of prophecy because he had an ulterior motive - the god wished to win her affections. Cassandra accepted Apollo as a teacher, but not as a lover. Naturally, the god was insulted by this refusal. So he punished Cassandra. Apollo caused the gift that he gave Cassandra to be twisted, making everyone who heard her true and accurate foretellings of future events believe that they were instead hearing lies. In other words, the wondrous blessing bestowed upon a mortal became instead a terrible curse. She predicted the outcome of many disastrous events. And this, in the end, was to be Cassandra's tragic fate.