John didn’t tolerate this new situation for long, though, and in a 1678 coup he appointed himself prime minister, exiling both Mariana and Valenzuela from Spain. Less dramatically, John also now made efforts to smarten Charles up a bit by instructing him to keep his hair combed.
More importantly, to secure the succession of the crown after Charles, John decided that a wife must be found for the young king. The lucky bride? A French noblewoman, Marie Louise of Orléans – and the wedding took place in 1679 when the groom was 18 and his new wife 17.