 The Jocasta complex is named for Jocasta, a Greek queen who unwittingly married her son, Oedipus.The Jocasta complex is similar to the Oedipus complex, in which a child has sexual desire towards their parent(s).The term is a bit of an extrapolation, since in the original story Oedipus and Jocasta were unaware that they were mother and son when they married.