Eumolpos among kings to whom Demeter shows the performance of her sacred rites, where he seems to be from Eleusis, which then makes his being Thracian a puzzle, in the context of analyzing Erechtheus’ later myth and the reason it gives for his presence in Poseidon’s temple and the myth according to which Poseidon’s son Eumolpos led a Thracian army against Athens claiming Athens as his birthright