Creusa - also known by the name Glauce, e.g. in Apollodorus's Bibliotheca 1.9.28. - was the daughter of King Creon of Corinth, Greece, in whose favor Jason abandoned Medea. In the version of the myth commonly followed by ancient tragedians, Medea obtained her revenge by giving Creusa a dress that had been cursed by the sorceress. The curse caused the dress to stick to Creusa's body and burn her to death as soon as she put it on.
Read more about Creusa: Daughter of Erechtheus, Creusa, Wife of Aeneas, Other Characters, Trojan Family Tree