Mythology & Beliefs: Ismene In Greek and Roman Mythology, Ismene was the daughter of Oedipus; sister of Antigone.
Ismene in Wikipedia
Ismene (Greek: Ἰσμήνη Ismŕnŕ) is the name of two women of
Greek mythology. The more famous is a daughter and half-sister
of Oedipus, daughter and granddaughter of Jocasta, and sister
of Antigone, Eteocles, and Polynices. She appears in several
plays of Sophocles: at the end of Oedipus the King and to a
limited extent in Oedipus at Colonus and Antigone. She also
appears at the end of Aeschylus' Seven Against Thebes...