Passage 10.35.8
ἐσβολὴ δὲ ἐκ Χαιρωνείας ἐς γῆν τὴν Φωκίδα οὐ μόνον ἡ εὐθεῖά ἐστιν ἐς Δελφοὺς ἡ διά τε Πανοπέως καὶ παρὰ τὴν Δαυλίδα καὶ ὁδὸν τὴν Σχιστήν· φέρει δὲ ἐκ Χαιρωνείας καὶ ἑτέρα τραχεῖά τε ὁδὸς καὶ ὀρεινὴ τὰ πλέονα ἐς πόλιν Φωκέων Στῖριν· μῆκος δὲ εἴκοσι στάδιοι τῆς ὁδοῦ καὶ ἑκατόν. οἱ δὲ ἐνταῦθά φασιν οὐ Φωκεῖς, Ἀθηναῖοι δὲ εἶναι τὰ ἄνωθεν, καὶ ἐκ τῆς Ἀττικῆς ὁμοῦ Πετεῷ τῷ Ὀρνέως ἀφικέσθαι διωχθέντι ὑπὸ Αἰγέως ἐξ Ἀθηνῶν· ὅτι δὲ τῷ Πετεῷ τὸ πολὺ ἐκ τοῦ δήμου τοῦ Στιρέων ἠκολούθησεν, ἐπὶ τούτῳ κληθῆναι τὴν πόλιν Στῖριν.
From Chaeronea into the Phocian territory, there is not only the direct route to Delphi, passing through Panopeus, Daulis, and the Schiste road, but there is also another road from Chaeronea, rough and mountainous for most of its length, leading to the Phocian city of Stiris. This road is one hundred and twenty stades long. The inhabitants of Stiris say that they are not originally Phokians but Athenians by descent, and that they arrived from Attica together with Peteos, the son of Orneus, who was driven out of Athens by Aegeus. Because the majority of those who followed Peteos belonged to the deme of Stiria, the city was thus named Stiris.