Passage 7.2.6
τότε δὲ ὡς ἐκράτησαν τῶν ἀρχαίων Μιλησίων οἱ Ἴωνες, τὸ μὲν γένος πᾶν τὸ ἄρσεν ἀπέκτειναν πλὴν ὅσοι τῆς πόλεως ἁλισκομένης ἐκδιδράσκουσι, γυναῖκας δὲ καὶ θυγατέρας τὰς ἐκείνων γαμοῦσι. τοῦ δὲ Νειλέως ὁ τάφος ἰόντων ἐς Διδύμους ἐστὶν οὐ πόρρω τῶν πυλῶν ἐν ἀριστερᾷ τῆς ὁδοῦ· τὸ δὲ ἱερὸν τὸ ἐν Διδύμοις τοῦ Ἀπόλλωνος καὶ τὸ μαντεῖόν ἐστιν ἀρχαιότερον ἢ κατὰ τὴν Ἰώνων ἐσοίκησιν, πολλῷ δὲ πρεσβύτερα ἔτι ἢ κατὰ Ἴωνας τὰ ἐς τὴν Ἄρτεμιν τὴν Ἐφεσίαν ἐστίν.
At that time, after the Ionians had overcome the ancient Milesians, they slew all the males of the race except those who escaped when the city was captured, and married their wives and daughters. The tomb of Neileus is located on the left side of the road as one travels toward Didyma, not far from the city gates. The sanctuary of Apollo at Didyma and its oracle existed before the settlement of the Ionians, and are still more ancient, by far, than even the rites practiced among the Ionians in honor of Artemis at Ephesus.