[2] As his elder brother, the Dauphin Louis, had repeatedly run into conflict with his father and since 1456 was living in exile at the court of Burgundy, some expected the crown to pass to Charles.Once free, Louis reneged on the promises made under duress but in April 1469, he finally reconciled with his brother, granting him the Duchy of Aquitaine, recently won back from the Kings of England in 1453.Thenceforth Charles quartered the royal arms of France (differenced by a bordure engrailed gules) with one of the three lions of Plantagenet, to signify the duchy.Louis had no intention of allowing a union between his brother and his enemy's daughter and dispatched envoys to Pope Paul II to ensure that the necessary dispensation, required on grounds of consanguinity, was not granted.Still, the marriage plan came to nothing as Charles died at Bordeaux in May 1472, probably from a combination of tuberculosis and a venereal disease contracted from his mistress Colette de Chambes, the wife of Louis d'Amboise, Viscount of Thouars.