 In the following year, the Duke of Orléans wed Princess Elizabeth Charlotte of the Palatinate, only daughter of Charles I Louis, Elector Palatine and Landgravine Charlotte of Hesse-Kassel.The new Duchess of Orléans, who had converted from Protestantism to Catholicism just before entering France, was popular at court upon her arrival in 1671 and quickly became the mother of Alexandre Louis d'Orléans in 1673, another short-lived "Duke of Valois".The next year, the duchess gave birth to another son, Philippe Charles d'Orléans.