Passage 3.12.9
καὶ Μάρωνός ἐστιν ἱερὸν καὶ Ἀλφειοῦ· Λακεδαιμονίων δὲ τῶν ἐς Θερμοπύλας στρατευσαμένων λόγου μάλιστα ἀξίως μαχέσασθαι μετά γε αὐτὸν δοκοῦσι Λεωνίδαν. τοῦ δὲ Τροπαίου Διὸς τὸ ἱερὸν ἐποίησαν οἱ Δωριεῖς πολέμῳ τούς τε ἄλλους Ἀχαιούς, οἳ γῆν τὴν Λακωνικὴν τηνικαῦτα εἶχον, καὶ τοὺς Ἀμυκλαιεῖς κρατήσαντες. τὸ δὲ ἱερὸν τῆς Μεγάλης μητρὸς τιμᾶται περισσῶς δή τι. μετὰ δὲ αὐτὸ ἡρῷα Ἱππολύτου τέ ἐστι τοῦ Θησέως καὶ Αὐλῶνος Ἀρκάδος, υἱοῦ δὲ Τλησιμένους· Τλησιμένη ν δὲ Παρθενοπαίου τοῦ Μελανίωνος ἀδελφόν, οἱ δὲ παῖδα εἶναι λέγουσιν.
There is also a sanctuary of Maron and of Alpheius. Among the Lacedaemonians who marched out to Thermopylae, they seem, after Leonidas himself, to have fought most worthily of mention. The sanctuary of Zeus Tropaios (Zeus of the Trophy) was built by the Dorians when they conquered in war both the rest of the Achaeans, who at that time held the land of Laconia, and the Amyclaeans. Especially great honour is paid to the sanctuary of the Great Mother. Next to it are the hero shrines of Hippolytus, the son of Theseus, and of Aulon, an Arcadian, the son of Tlesimenes. Tlesimenes was the brother of Parthenopaeus, son of Melanion, although some say he was Parthenopaeus' own son.