By the intrigues of Louis Philippe, aided by his astute, able, but subservient minister Guizot, it was contrived to marry the young queen to the Duke of Cadiz, one of the degenerate descendants of Philip V., since no issue from the marriage was expected, in which case the heir of the Infanta Donna Fernanda, married to the Duc de Montpensier, would some day ascend the throne of Spain.