 He suddenly died whereas he was supposed to have been arrested and taken to the Bastille on the King's orders.French memorialist Saint-Simon quotes the account of Cléran, his father's former equerry, who went to see Madame de Louvois before the minister's death.In Pagnol's opinion, Saint-Simon's text leaves no doubt that Louvois was poisoned by his doctor Séron  on the discreet orders of the King, because of the secrets he held, concerning Fouquet's poisoning, the identity of the prisoner in the iron mask, and the death of Henrietta of France.