Passage 9.35.1
τὸν δὲ Ἐτεοκλέα λέγουσιν οἱ Βοιωτοὶ Χάρισιν ἀνθρώπων θῦσαι πρῶτον. καὶ ὅτι μὲν τρεῖς εἶναι Χάριτας κατεστήσατο ἴσασιν, ὀνόματα δὲ οἷα ἔθετο αὐταῖς οὐ μνημονεύουσιν· ἐπεὶ Λακεδαιμόνιοί γε εἶναι Χάριτας δύο καὶ Λακεδαίμονα ἱδρύσασθαι τὸν Ταϋγέτης φασὶν αὐτὰς καὶ ὀνόματα θέσθαι Κλήταν καὶ Φαένναν.
The Boeotians say that Eteocles was the first among men to sacrifice to the Graces. They also know that he established the Graces as being three in number, but they do not record the names that he gave them. The Lacedaemonians, on the other hand, claim there are only two Graces, and they say that Lacedaemon, son of Taygete, established them and gave them the names Cleta and Phaenna.