By an ordinance of Louis Philippe I of 13 August 1830, it was decided that the king's children (and his sister) would continue to bear the arms of Orléans, that Louis-Philippe's eldest son, as Prince Royal, would bear the title of Duke of Orléans, that the younger sons would continue to have their existing titles, and that the sister and daughters of the king would be styled "Royal Highness" and "d'Orléans", but the Orléans dynasts did not take the name "of France".