A Dictionary of Greek and Roman biography and mythology

(Γλαύκιππος), a son of the Athenian orator Hyperides, is said by Plutarch

(Vit. x. Orat. p. 848), who calls him a rhetor, to have written orations, one of which, viz. against Phocion, is mentioned by Plutarch himself. (Phoc. 4; comp. Athen. 13.590; Sid. s. v. Γλαύκιππος; Phot. Bibl. Cod. 266. p. 495, ed. Bekker.) Whether he is the same as the rhetorician Glaucippus, of whom a fragment is preserved by Seneca (Controv. 4.25), or as the Glaucippus who wrote on the Sacra of the Athenians (Macr. 1.13), is uncertain.

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