Whose prophecies were never believed?

Cassandra was a figure from Greek mythology known for her gift of prophecy. Her story is particularly tragic because, although she was granted the ability to see the future accurately, she was cursed so that no one would believe her predictions. This curse made it impossible for her to prevent disasters, as people would dismiss her warnings. For instance, she foretold the fall of Troy and the dangers posed by the Trojan Horse, but her insights went unheeded, leading to disastrous consequences for her city and herself.

In contrast, other figures listed had their prophecies acknowledged or taken seriously in some contexts. The Sybil, a respected oracle, was often consulted and her prophecies were documented and followed in various ways. Hecuba, a character in Greek tragedies, does not primarily focus on prophecy as a key aspect of her narrative. Antigone, while she does grapple with fate and moral decisions influenced by the gods, is not primarily known for making prophecies that go unrecognized in the same way Cassandra’s do.

Thus, the recognition of Cassandra's unique and tragic situation solidifies her as the correct answer in the context of prophecies that were never believed.