The prospects of Alexander were thus full of uncertainty and peril, up to the very day of Philip’s assassination. The succession to the Macedonian crown, though transmitted in the same family, was by no means assured as to individual members; moreover, in the regal house of Macedonia[7] (as among the kings called Diadochi, who acquired dominion after the death of Alexander the Great), violent feuds and standing mistrust between father, sons, and brethren, were ordinary phænomena, to which the family of the Antigonids formed an honorable exception. Between Alexander and Olympias on the one side, and Kleopatra with her son and Attalus on the other, a murderous contest was sure to arise. Kleopatra was at this time in the ascendent; Olympias was violent and mischievous; and Philip was only forty-seven years of age. Hence the future threatened nothing but aggravated dissension and difficulties for Alexander. Moreover his strong will and imperious temper, eminently suitable for supreme command, disqualified him from playing a subordinate part, even to his own father. The prudence of Philip, when about to depart on his Asiatic expedition, induced him to attempt to heal these family dissensions by giving his daughter Kleopatra in marriage to her uncle Alexander of Epirus, brother of Olympias. It was during the splendid marriage festival, then celebrated at Ægæ, that he was assassinated—Olympias, Kleopatra, and Alexander, being all present, while Attalus was in Asia, commanding the Macedonian division sent forward in advance, jointly with Parmenio. Had Philip escaped this catastrophe, he would doubtless have carried on the war in Asia Minor with quite as much energy and skill as it was afterwards prosecuted by Alexander: though we may doubt whether the father would have stretched out to those ulterior undertakings which, gigantic and far-reaching as they were, fell short of the insatiable ambition of the son. But successful as Philip might have been in Asia, he would hardly have escaped gloomy family feuds; with Alexander as a mutinous son, under the instigations of Olympias,—and with Kleopatra on the other side, feeling that her own safety depended upon the removal of regal or quasi-regal competitors.