1 Diog. Laert. 3.1
Πλάτων Ἀρίστωνος καὶ Περικτιόνης—ἢ Πωτώνης—ἥτις τὸ γένος ἀνέφερεν εἰς Σόλωνα, Ἀθηναῖος. τούτου γὰρ ἦν ἀδελφὸς Δρωπίδης, οὗ Κριτίας, οὗ Κάλλαισχρος, οὗ Κριτίας ὁ τῶν τριάκοντα καὶ Γλαύκων, οὗ Χαρμίδης καὶ Περικτιόνη, ἧς καὶ Ἀρίστωνος Πλάτων, ἕκτος ἀπὸ Σόλωνος.
2 Ιο. Philop. in Arist. de anima1.405b5(Comm. in Arist. Gr. xv.89.8)
Κριτίαν εἴτε τὸν ἕνα τῶν τριάκοντα, ὃς καὶ Σωκράτους ἠκροάσατο, ἢ καὶ ἄλλον τινὰ λέγει, οὐδὲν διαφερόμεθα. φασὶ δὲ καὶ ἄλλον Κριτίαν γεγονέναι σοφιστήν,
Most of the testimonia on Critias pertain to his political career, association with Socrates, prose style, or moral character and are therefore omitted here. All the testimonia are printed in Die Fragmente der Vorsokratiker (as well as in Gentili-Prato) and are translated by D. N. Levin in R. K. Sprague (ed.), The Older Sophists (Columbia, S.C. 1972) 242–49. See also Archilochus test. 33 and Solon fr. 22a.
1 Diogenes Laertius, Lives of the Philosophers
Plato, the Athenian, was the son of Ariston and Perictione (or Potone), who traced her family back to Solon. For Solon’s brother Dropides was the father of Critias who was the father of Callaeschrus. His sons were Critias, a member of the thirty (tyrants), and Glaucon, the father of Charmides and Perictione. Plato, the son of Perictione and Ariston, was in the sixth generation after Solon.
2 John Philoponus on Aristotle, On the Soul
It makes no difference to us whether Aristotle means Critias, one of the thirty (tyrants), who also listened to Socrates, or someone else. They say that there was also