A Cyclopaedia of Female Biography/Arsinoe III
ARSINOE III,
Daughter of Ptolemy the Third, Euergetes, was married to her brother, Ptolemy the Fourth, Philopater; she is called Eurydice by Justin, and Cleopatra by Livy. She was present at the battle of Rhaphia, a city not far from Gaza, in Palestine, fought between her husband and Antiochus the Great, B.C. 217, and is said to have contributed not a little to the victory. Ptolemy afterwards, seduced by the charms of Agathoclea, ordered Arsinoe to be put to death.