Ptolémaïs Lagid princess; daughter of Ptolemy Soter, fifth wife of Demetrius Poliorcetes Parents Eurydice of Egypt Ptolemy I Soter Children Demetrius the Fair Siblings Arsinoe II Ptolemy II Philadelphus Meleager Lysandra Ptolemy Ceraunus Irene Argaeus of Egypt Philotera Leontiscus Lagos Partners Demetrius I of Macedon