Passage 4.16.1
ὡς δὲ ἀμφοτέροις προεθύσαντο οἱ μάντεις, Λακεδαιμονίοις μὲν Ἕκας ἀπόγονός τε καὶ ὁμώνυμος Ἕκα τοῦ σὺν τοῖς Ἀριστοδήμου παισὶν ἐλθόντος ἐς Σπάρτην, τοῖς δὲ Μεσσηνίοις Θέοκλος---ἐγεγόνει δὲ ὁ Θέοκλος οὗτος ἀπὸ Εὐμάντιδος, Εὔμαντιν δὲ ὄντα Ἠλεῖον τῶν Ἰαμιδῶν Κρεσφόντης ἐπηγάγετο ἐς Μεσσήνην---τότε δὲ παρόντων καὶ τῶν μάντεων σὺν φρονήματι ἀμφότεροι μᾶλλον ἠπείγοντο ἐς τὴν μάχην.
And after the seers had offered preliminary sacrifices for both sides—on behalf of the Lacedaemonians, Hecas, a descendant and namesake of that Hecas who had come to Sparta together with the sons of Aristodemus; and on behalf of the Messenians, Theoclus, who was descended from Eumantis (this Eumantis was an Elean, one of the Iamidae, whom Cresphontes had brought into Messene)—then, indeed, with the seers themselves present, both sides, encouraged in spirit, pressed on eagerly to the battle.