（*)Anti/gonos *Gonata=s), son of Demetrius Poliorcetes and Phila (the daughter of Antipater), and grandson of Antigonus, king of Asia. [ANTIGONIDAE.] When his father Demetrius was driven out of Macedonia by Pyrrhus, in B. C. 287, and crossed over into Asia, Antigonus remained in Peloponnesus ; but he did not assume the title of king of Macedonia till after his father's death in Asia in B. C. 283.
It was some years, however, before he obtained possession of his paternal dominions. Pyrrhus was deprived of the kingdom by Lysimachus (B. C. 286); Lysimachus was succeeded by Seleucus (280), who was murdered by Ptolemy Ceraunus. Ceraunus shortly after fell in battle against the Gauls, and during the next three years there was a succession of claimants to the throne. Antigonus at last obtained possession of the kingdom in 277, notwithstanding the opposition of Antiochus, the son of Seleucus, who laid claim to the crown in virtue of his father's conquests.
But he withdrew
ysicians mentioned by Suidas, of whom one was a native of Tlasos, and wrote several medical works, of which some of the titles are preserved.
The other was a native of Cnidos, and was servant to Chrysippus, the philosopher, according to Suidas; or rather, as Galen says (de Ven. Sect. adv. Erasistr. Rom. Deg. 100.2, de Cur. Rat. per Ven. Sect. 100.2, vol. xi. pp. 197, 252), he was a pupil of the physician of that name, and afterwards became physician to Antigonus Gonatas, king of Macedonia, B. C. 283-239. A. physician of this name is quoted by Celsus, and Pliny. Hardouin (in his Index of authors quoted by Pliny) thinks that the two physicians mentioned by Suidas were in fact one and the same person and that he was called " Cnidius" from the place of his birth, and " Thasius" from his residence ; this, however, is quite uncertain. (Fabric. Bibl. Gr. vol. xiii. p. 83, ed. vet.; Kühn, Additam. ad Elenchum Medicor. Veter. a Jo. A. Fabricio, &c. exhibitum, Lips. 1826, 4to., fascic. iii. p.