...from whom the Athenians name their tribe） being the son of Berenice and not of the daughter of Antipater. This Ptolemy fell in love with Arsinoe, his full sister, and married her, violating herein Macedonia n 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 ...