Immediately after the Restoration, as it is well known, an act was passed, commonly called in that age “the Act of Oblivion,” by which all penalties (except certain specified ones) incurred in the late troublous and rebellious times were forgiven. So superfine would have been the net which the law of treason would have drawn around the three kingdoms, had its strict construction been enforced, that it was quite cut loose, a few only of the greatest criminals and regicides being held in its meshes. So harsh had been Cromwell’s iron rule that there were few counties of England in which the stoutest squires, and even the most loyal, might not have trembled had the king’s commission inquired too closely into the legal question of connivance at the late tyrant’s rule. And in the great cities, London especially, the tide of enthusiasm which now ran so strongly for the king could not hide the memory of those days when the same fierce crowds had clamored for the head of the “royal martyr.” Prudent it was, as well as benign, therefore, for the “merry monarch” to let time roll smoothly over past transgressions. But though the law might grant oblivion, and even punish the revival of controversies, the old rancor between individuals and even parties was not so easily appeased after the first joyful outburst. Books and pamphlets by the hundred brought charges and counter charges. But these “authors of slander and lyes,” as Castlehaven calls them, outdid themselves in their tragical stories of the Irish Rebellion of 1641. Nor have imitators been wanting in this age, as rancorous and more skilful, in the production of “fictions and invectives to traduce a whole nation.” To answer those calumnies by “setting forth the truth of his story in a brief and plain method” was the design of Castlehaven’s work. Then, as now, it was the aim of the libellers of the Irish people to make the whole nation accountable for the “massacre,” so called, of 1641, and to confound the war of the Confederate Catholics and the later loyal resistance to Cromwell in one common denunciation with the first sanguinary and criminal outbreak. Lord Castlehaven’s narrative effectually disposes of this charge. In a singularly clear and candid manner he narrates the rise and progress of the insurrection, and shows the wide difference between the aims and motives of those who planned the uprising of October 23, 1641, and of those who afterwards carried on the war under the title of the Confederate Catholics of Ireland. The former he does not hesitate to denounce as a “barbarous and inhumane” conspiracy, but the responsibility for it he fixes in the right quarter--the malevolent character of the Irish government and the atrocious spirit of the English Puritan Parliament, which, abandoning all the duties of protection, kept only one object in view--the extirpation of the native Irish.