37-2 HISTORY OF GREECE. Antigonus, and placed them in cooperation with Kjissander; while Ptolemy of Egypt, accusing Antigonus of having contra- vened the treaty by garrisoning various Grecian cities, renewed the war and the triple alliance against him.^ Polysperchon, — who had hitherto maintained a local domin- ion over various parts of Peloponnesus, with a military force distributed in Messene and other towns" — was now encouraged by Antigonus to espouse the cause of Herakles (son of Alexan- der by Barsine), and to place him on the throne of Macedonia in opposition to Kassander. This young prince Herakles, now seventeen years of age, was sent to Greece from Pergamus in Asia, and his pretensions to the thi'one were assisted not only by a considerable party in Macedonia itself, but also by the JEtoli- ans. Polysperchon invaded Macedonia, with favorable pros- pects of establishing the young prince ; yet he thought it advan- tageous to accept treacherous propositions from Kassander, who offered to him partnership in the sovereignty of Macedonia, with an independent army and dominion in Peloponnesus. Polysper chon, tempted by these offers, assassinated the young prince He rakles, and withdrew his army towards Peloponnesus. But he found such unexpected opposition, in his march through Bceotia, from Boeotians and Peloponnesians, that he was forced to take up his winter quarters in Lokris'^ (309 B. c). From this time forward, as far as we can make out, he commanded in Southern Greece as subordinate ally or partner of Kassander;* whose Macedonian dominion, thus confirmed, seems to have included Akarnania and Amphilochia on the Ambrakian Gulf, together with the town of Ambrakia itself, and a supremacy over many of the Epirots. The assassination of Herakles was speedily followed by that of Kleopatra, sister of Alexander the Great, and daughter of .Philip and Olympias. She had been for some time at Sardis, ' Diodor. xx. 19. - Messene was garrisoned by Polysperchon (Diodor. xix. 64). 'Diodor. xx. 28; Trogns Pompeius — Proleg. ad Justin, xv. Justin XV. 2.
- Diodor. xx. 100-103 ; Plutarch, Pyrrhus, 6. King Pyrrhus was ot jtoo-
yovuv uel dEdovXevKOTuv MaKef5(3fft — at least this was the reproach of Lysi- machus (Plutarch, Phyrrhus, 12).
