Prince François d’Orléans_

Prince François of Orléans, Count of Clermont was the eldest son and heir apparent of the Orléanist pretender to the French throne, Prince Henri, Count of Paris, Duke of France and Duchess Marie-Thérèse of Württemberg. François was thus the Dauphin of France in Orléanist reckoning. However, his mother had been infected with toxoplasmosis during her second and third pregnancies, and the pre-natal exposure left both Prince François and his younger sister, Princess Blanche, developmentally disabled.