Who is the offspring of XXX?
Menoeceus
In Greek mythology, Menoeceus (/məˈniːsiəs, -sjuːs/; Greek: Μενοικεύς Menoikeús) was the father of Creon, Jocasta and Hipponome and both grandfather and father-in-law of Oedipus.
Creon Jocasta