Alphonse de Polignac French mathematician (1826–1863) (1826–1863) Parents Prince Jules de Polignac, 3rd Duke of Polignac Maria Charlotte Parkyns Children Jeanne de Polignac Siblings Yolande de Polignac Ludovic de Polignac Prince Edmond de Polignac Camille de Polignac Prince Jules-Armand de Polignac, 4th Duke of Polignac Partners Jeanne Emilie Mirès