(Βρύσων), mentioned by Iamblichus (Vit. Pyth, 100.23) as one of those youths whom Pythagoras instructed in his old age. He was perhaps the same writer that is mentioned in the extract from Theopompus found in Athenaeus (xi. p. 508), where Plato is charged with having borrowed from Bryson, the Heracleot, and others, a great deal that he introduced into his dialogues as his own. A saying of Bryson's is refuted by Aristotle in his Rhet. 3.2, 13.
[A.G]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890