Note 214 — Chapter XXX · GRECIAN AFFAIRS DURING THE GOVERNMENT OF PEISISTRATUS AND HIS SONS AT ATHENS.
Reading edition
Thucyd. i, 20, about the general belief of the Athenian public in his time—Ἀθηναίων γοῦν τὸ πλῆθος οἴονται ὑφ᾽ Ἁρμοδίου καὶ Ἀριστογείτονος Ἵππαρχον τύραννον ὄντα ἀποθανεῖν, καὶ οὐκ ἴσασιν ὅτι Ἱππίας μὲν πρεσβύτατος ὢν ἦρχε τῶν Πεισιστράτου παιδῶν, etc.
The Pseudo-Plato in the dialogue called Hipparchus adopts this belief, and the real Plato in his Symposion (c. 9, p. 182) seems to countenance it.