Arsinoe II, queen of Thrace [see map] and Egypt, was born c. 316 B.C. to Berenice and Ptolemy I (Ptolemy Soter), founder of the Ptolemaic dynasty in Egypt. Arsinoe's husbands were Lysimachus, the king of Thrace, whom she married in about 300, and her brother, king Ptolemy II Philadelphus, whom she married in about 277. As Thracian queen, Arsinoe conspired to make her own son heir. This led to war and the death of her husband. As Ptolemy's queen, Arsinoe was also powerful and probably deified in her lifetime. Arsinoe died July 270 B.C.
Photo: Creative Commons Keith Schengili-Roberts: http://commons.wikimedia.org/wiki/Image:PtolemyIIAndArsinoeII-ROM.png