Creusa

In Greek mythology, four people had the name Creusa (or Kreousa).

According to Pindar's 9th Pythian Ode, Creusa was a naiad and daughter of Gaia who bore Hypseus, King of the Lapiths to the river god Peneus. Hypseus had one daughter, Cyrene. When a lion attacked her father's sheep, Cyrene wrestled with the lion. Apollo happened along and immediately fell in love with her and kidnapped her. He took her to North Africa and founded the city of Cyrene in her name. The region, Cyrenaica, is also named for her. Together, she and Apollo had one son: Aristaeus.
Daughter of King Creon of Corinth, Greece. After Jason divorced Medea, he married Creusa. Medea got even by giving Creusa a cursed dress that stuck to her body and burned her to death as soon as she put it on. Also known by Greek authors by the name Glauce, e.g. in Apollodorus's Bibliotheca 1.9.28.
Daughter of Priam, wife of Aeneas, mother of Ascanius. In Virgil's Aeneid she died escaping from Troy during the sack of Troy by the Greeks.
Daughter of Erechtheus, King of Athens and his wife, Praxithea, who was spared the fate of her sisters, who died in order to protect Athens, because she was an infant. According to Hesiod's Eoiae she was mother of a son Achaeus, a daughter named Diomede, and presumably another son Ion, but according to Euripides' Ion, in which she is a prominent character, she was mother of Ion by Apollo and of Achaeus and Dorus by her husband Xuthus. This is the only source which names Apollo as Ion's father, so it may have been invented for the play.