Deianeira
Δηιάνειρα
The wife whose attempt to keep her husband killed Heracles.
The dying centaur Nessus handed her his blood, and she kept it for years, believing it was a love potion.
When Heracles brought home another woman, she smeared the blood on a robe and sent it to him.
As the robe began to burn his flesh, she understood the truth and took her own life. There was never any malice in her.
SourcesSophocles, Women of Trachis