Ferdinand Philippe, Duke of Orléans was the eldest son of King Louis Philippe I of France and Maria Amalia of Naples and Sicily. He was born in exile in his mother's native Sicily while his parents were the Duke and Duchess of Orléans. Ferdinand Philippe was heir to the House of Orléans from birth. Following his father's succession as King of the French in 1830, he became the Prince Royal of France and Duke of Orléans. He died in 1842, never to succeed his father or see the collapse of the July Monarchy and subsequent exile of his family to the United Kingdom.

Maria Amalia Teresa of Naples and Sicily was Queen of the French by marriage to Louis Philippe I, King of the French. She was the last queen of France.