"In Greek mythology, Polynices (also Polyneices) (/ˌpɒlɪˈnaɪsiːz/; Ancient Greek: Πολυνείκης, Polyneíkes means "manifold strife" or "much strife") was the son of Oedipus and either Jocasta or ...
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Euryganeia and the younger brother of Eteocles. When his father, Oedipus, was discovered to have killed his father and married his mother, he was expelled from Thebes, leaving his sons Eteocles and Polynices to rule. Because of a curse put on them by their father Oedipus, the two sons did not share the rule peacefully and died as a result, killing each other in battle for control over Thebes." - (en.wikipedia.org 30.01.2020)