What is the similarity between Greek myths about Antigone and Danae?

The similarity between the Greek myths about Antigone and Danae is that both women are confined and/or imprisoned against their will while being the sole caretaker of a male relative. Their stories are about defiance and liberation.

Antigone was the daughter of Oedipus and Jocasta, and the sister of Ismene, Polynices, and Eteocles. After the death of her brothers, Antigone was the only person who dared to bury Polynices, who had been declared a traitor by the king of Thebes. She was imprisoned in a tomb by Creon, the king of Thebes, but she refused to give up her duty to her brother and died in the tomb.

Danaë was the daughter of King Acrisius of Argos. He imprisoned Danaë in a bronze tower because he had been told that she would give birth to a son who would kill him. Despite the precautions, Zeus visited her in the form of a shower of gold, and she gave birth to a son named Perseus. Acrisius set Danaë and Perseus adrift in a wooden chest, but they were rescued and Perseus eventually fulfilled the prophecy by killing his grandfather.