The remaining line of Bourbons henceforth descended from James I, Count of La Marche, the younger son of Louis I, Duke of Bourbon. With the death of his grandson James II, Count of La Marche in 1438, the senior line of the Count of La Marche became extinct. All future Bourbons would descend from James II's younger brother, Louis, who became the Count of Vendôme through his mother's inheritance. In 1525, at the death of Charles IV, Duke of Alençon, all of the princes of the blood royal were Bourbons; all remaining members of the House of Valois were members of the king's immediate family.