Final answer:
Antigone was cursing Creon in her final moments on earth before she killed herself in the play 'Antigone' by Sophocles.
Step-by-step explanation:
The person who was cursing Creon in their final moments on earth before they killed themselves was Antigone. In the play Antigone by Sophocles, Antigone defies the ruling of Creon and decides to bury her brother Polyneices, who was killed in his attack on Thebes. Creon condemns her to be immured in a rock-hewn chamber, but when he tries to release her, he is too late - both Antigone and his son Haemon have taken their own lives.