Nebrus (gr. Nebros) the thirteenth in descent from Aesculapius, the son of Sostratus III., and the father of Gnosidicus and Chrysus, who lived in the seventh and sixth centuries BC. (Jo. Tzetzes, Chil. vii. Hist. 155, in Fabric. Bibl. Gr. vol. xii. p. 680, ed. vet.; Poet. Epist. ad Artax. in Hippocr. Opera, vol. iii. p. 770; Thessal. Orat. ad Aram, ibid. p. 835, &c.) He was a native of the island of Cos, and the most celebrated physician of his time. During the Crissaean war he joined the camp of the Amphictyons, taking with him his son Chrysus, and a penteconter fitted up at his own expence with both medical and military apparatus. Here they were of great use to the besiegers, and Nebrus is said to have poisoned the water used by the town, though, according to Pausanias (Phoc. c. 37. § 5), this barbarous expedient was adopted in consequence of the recommendation of Solon, 591 BC. (Penny Cyclopaedia, art. Nebrus.)