Who is Cassandra ?

In Greek mythology, Cassandra (Greek: Κασσάνδρα, "she who entangles men",[1] also known as Alexandra[2]) was the daughter of King Priam and Queen Hecuba of Troy. Her beauty caused Apollo to grant her the gift of prophecy. In an alternative version, she spent a night at Apollo's temple, at which time the temple snakes licked her ears clean so that she was able to hear the future. This is a recurring theme in Greek mythology, though sometimes it brings an ability to understand the language of animals rather than an ability to know the future.[3] However, when she did not return his love, Apollo placed a curse on her so that no one would ever believe her predictions. She is a figure both of the epic tradition and of tragedy, where her combination of deep understanding and powerlessness exemplify the tragic condition of humankind.
Apollo's cursed gift became a source of endless pain and frustration. In some versions of the myth, this is symbolized by the god spitting into her mouth; in other Greek versions, this act was sufficient to remove the gift so recently given by Apollo, but Cassandra's case varies. From Aeschylus' Agamemnon, it appears that she has made a promise to Apollo to become his consort, but broke it, thus incurring his wrath: though she has retained the power of foresight, no one will believe her predictions.
While Cassandra foresaw the destruction of Troy (she warned the Trojans about the Trojan Horse, the death of Agamemnon, and her own demise), she was unable to do anything to forestall these tragedies since no one believed her.
Coroebus and Othronus came to the aid of Troy out of love for Cassandra. Cassandra was also the first to see the body of her brother Hector being brought back to the city.
At the fall of Troy, she sought shelter in the temple of Athena, where she was violently abducted and raped by Ajax the Lesser. Cassandra was then taken as a concubine by King Agamemnon of Mycenae. Unbeknownst to Agamemnon, while he was away at war, his wife, Clytemnestra, had begun an affair with Aegisthus. Clytemnestra and Aegisthus then murdered both Agamemnon and Cassandra. Some sources mention that Cassandra and Agamemnon had twin boys, Teledamus and Pelops, both of whom were killed by Aegisthus.