'Get your s-stem personal names right, boy!'

Phrynichus wrote:

(127q) Ἡρακλέα, Περικλέα, Θεμιστοκλέα ἐπεκτείνων *τὴν τελευταίαν συλλαβὴν (*τὴν
ἐσχάτην) λέγε, ἀλλὰ μὴ Ἡρακλῆν, Περικλῆν, Θεμιστοκλῆν.

See also Buck, sect. 108.1 (and a) and 108.2. In relation to the second of those issues, note that Plato has Σωκράτη as the accusative, but Xenophon has Σωκράτην.