(Ξενοκράτης) a physician of Aphrodisias in Cilicia (Galen, De Simplic. Medicam. Temper. ac Facult. vi. praef. vol. xi. p. 793), who must have lived about the middle of the first century after Christ, as he was probably a contemporary of Andromachus the Younger. (See Gal. De Compos. Medicam. sec. Loc. iii. l, vol. xii. p. 627, and De Ther. Ad Pis. 100.12. vol. xiv. p.260.) Galen says that he lived in the second generation before himself (κατὰ τοὺς πάππους ἡμῶν, De Simplic. Medicam. Temper. ac Facult. 10.1. vol. xii. p. 248).
[W.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