The life of Arsino II (c. 316-c.270 BCE), daughter of the founder of the Ptolemaic dynasty, is characterized by dynastic intrigue. Her marriage to her full brother Ptolemy II, king of Egypt, was the first of the sibling marriages that became a dynastic feature of the Ptolemies. With Ptolemy II, she ended her days in great wealth and power. However, prior to that point she was forced to endure two tumultuous marriages, both of which led her to flee...