Orleans, Dukes of, the name of four distinct branches of the royal family of France, the first commencing with Philippe, fifth son of Philippe of Valois, in 1344; the second with Louis, brother of Charles VI. (1371-1407); the third with Jean Baptiste Gascon, brother of Louis XIII., who took part in the plots against Richelieu, and was appointed lieutenant-general on the death of his brother (1608-1660); the fourth with Philippe I., brother of Louis XIV. (1640-1701); Philippe II., son of the preceding, governed France during the minority of Louis XV.; involved his finances by his connection with Louis, and did injury to the public morals by the depravity of his life (1674-1723); Louis-Philippe, his grandson, lieutenant-general and governor of Dauphiné (1725-1785); Louis-Philippe Joseph, son of preceding, surnamed Philippe-Egalité, played a conspicuous part in the Revolution, and perished on the scaffold (1747-1793); and Louis-Philippe, his son (q.v.); Prince Louis Robert, eldest son of Comte de Paris, claimant to the throne, (b. 1869).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Orleans * Orloff