Louis I, Duke of Orléans
The House of Valois had secured the principle of agnatic succession following their victory in the Hundred Years War. When the senior line of the Valois became extinct, they were followed by the Valois-Orléans line descended from Louis I, Duke of Orléans, younger brother of Charles VI, and then, by the Valois-Angoulême line descended from a younger son of Louis I.