Wanted for having snakes on her head.
Medusa, one of the three Gorgons, daughter of Phorcys and Ceto.
This violation of the sanctity of the temple provoked Minerva, and she changed the beautiful locks of Medusa, which had inspired Neptune’s love to serpents. According to Apollodorus, Medusa and her sisters came into the world with snakes on their heads, instead of hair, with yellow wings and brazen hands. Their bodies were also covered with impenetrable scales, and their very looks had the power of killing or turning to stones.
He cut off her head, and the blood that dropped from the wound produced the innumerable serpents that infest Africa. The conqueror placed Medusa's head on the shield of Minerva, which he had used in his expedition. The head still retained the same petrifying power as before, as it was fatally known in the court of Cepheus.
The Medusa was the daughter of Phorkys and Keto.
She was originally a golden-haired and very beautiful maiden, who, as a priestess of Athena, was devoted to a life of celibacy; but, being wooed by Poseidon, whom she loved in return, she forgot her vows, and became united to him in marriage. For this offence she was punished by the goddess in a most terrible manner. Each wavy lock of the beautiful hair which had so charmed her husband, was changed into a venomous snake