Passage 4.2.4
Περιήρει δὲ ἐγεγόνεσαν ἐκ Γοργοφόνης τῆς Περσέως Ἀφαρεὺς καὶ Λεύκιππος, καὶ ὡς ἀπέθανε Περιήρης, ἔσχον οὗτοι τὴν Μεσσηνίων ἀρχήν· κυριώτερος δὲ ἔτι Ἀφαρεὺς ἦν. οὗτος βασιλεύσας πόλιν ᾤκισεν Ἀρήνην ἀπὸ τῆς Οἰβάλου θυγατρός, αὑτοῦ δὲ γυναικὸς τῆς αὐτῆς καὶ ἀδελφῆς ὁμομητρίας· καὶ γὰρ Οἰβάλῳ συνῴκησε Γοργοφόνη, καί μοι δὶς ἤδη τὰ ἐς αὐτὴν ὁ λόγος ἔν τε τῇ Ἀργολίδι ἐδήλωσε καὶ ἐν τῇ Λακωνικῇ συγγραφῇ.
Perieres had two sons by Gorgophone, daughter of Perseus, Aphareus and Leucippus, and when Perieres died, these sons assumed power over the Messenians; however, Aphareus was the more authoritative ruler. During his reign as king, Aphareus founded a city named Arene after the daughter of Oebalus, who was also his own wife and maternal half-sister. For Gorgophone had also married Oebalus; indeed, I have already mentioned her twice previously, both in my account of Argolis and in my work on Laconia.