Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[188] And indeed Herod's troubles in his family seemed to be augmented by reason of this attempt he made upon David's sepulcher; whether Divine vengeance increased the calamities he lay under, in order to render them incurable, or whether fortune made an assault upon him, in those cases wherein the seasonableness of the cause made it strongly believed that the calamities came upon him for his impiety; for the tumult was like a civil war in his palace, and their hatred towards one another was like that where each one strove to exceed another in calumnies. However, Antipater used stratagems perpetually against his brethren, and that very cunningly; while abroad he loaded them with accusations, but still took upon him frequently to apologize for them, that this apparent benevolence to them might make him be believed, and forward his attempts against them; by which means he, after various manners, circumvented his father, who believed all that he did was for his preservation. Herod also recommended Ptolemy, who was a great director of the affairs of his kingdom, to Antipater; and consulted with his mother about the public affairs also. And indeed these were all in all, and did what they pleased, and made the king angry against any other persons, as they thought it might be to their own advantage; but still the sons of Marianme were in a worse and worse condition perpetually; and while they were thrust out, and set in a more dishonorable rank, who yet by birth were the most noble, they could not bear the dishonor. And for the women, Glaphyra, Alexander's wife, the daughter of Archclaus, hated Salome, both because of her love to her husband, and because Glaphyra seemed to behave herself somewhat insolently towards Salome's daughter, who was the wife of Aristobulus, which equality of hers to herself Glaphyra took very impatiently.