The chief sources from which I have drawn the history of this conspiracy are Cardinal de Retz’s Conjuration du Comte Jean Louis de Fiesque, the Histoire des Genes, and the third volume of Robertson’s History of Charles the Fifth. The liberties which I have taken with the historical facts will be excused, if I have succeeded in my attempt; and, if not, it is better that my failure should appear in the effusions of fancy, than in the delineation of truth. Some deviation from the real catastrophe of the conspiracy (according to which the count actually perished [A] when his schemes were nearly ripe for execution) was rendered necessary by the nature of the drama, which does not allow the interposition either of chance or of a particular Providence. It would be matter of surprise to me that this subject has never been adopted by any tragic writer, did not the circumstances of its conclusion, so unfit for dramatic representation, afford a sufficient reason for such neglect.
