What mythical Greek king killed his father and married his mother.
Polynices: In Greek mythology, Polynices, sometimes spelled Polyneices, (Greek: Πολυνείκης, transl. Oedipus:  A tragic hero in Greek mythology, Oedipus accidentally fulfilled a prophecy that he would end up killing his father and marrying his mother, thereby bringing disaster to his city and family.
Oedipus