This Ptolemy fell in love with Arsinoe, his full sister, and married her, violating herein Macedonian custom, but following that of his Egyptian subjects. Secondly he put to death his brother Argaeus, who was, it is said, plotting against him; and he it was who brought down from Memphis the corpse of Alexander. He put to death another brother also, son of Eurydice, on discovering that he was creating disaffection among the Cyprians. Then Magas, the half-brother of Ptolemy, who had been entrusted with the governorship of Cyrene by his mother Berenice—she had borne him to Philip, a Macedonians but of no note and of lowly origin—induced the people of Cyrene to revolt from Ptolemy and marched against Egypt.
Edition :
Pausanias. Pausaniae Graeciae Descriptio, 3 vols. Leipzig, Teubner. 1903.
Remark :
date: According to the New Pauly Argaeus was murdered after 282 B.C.
https://referenceworks.brillonline.com/entries/brill-s-new-pauly/argaeus-e134140?s.num=0&s.f.s2_parent=s.f.book.brill-s-new-pauly&s.q=Ptolemy
