Romes master-peece, or, The grand conspiracy of the Pope and his iesuited instruments, to extirpate the Protestant religion, re-establish popery, subvert lawes, liberties, peace, parliaments, by kindling a civill war in Scotland, and all His Majesties realmes, and to poyson the King himselfe in case hee comply not with them in these their execrable designes : revealed out of conscience to Andreas ab Habernfeld, by an agent sent from Rome into England, by Cardinall Barbarino, as an assistant to con the Popes late nuncio, to prosecute this most execrable plot, (in which he persisted a principall actor severall yeares) who discovered it to Sir William Boswell His Majesties agent at the Hague, 6 Sept. 1640. he, under an oath of secrecie, to the Arch-bishop of Canterbury (among whose papers it was casually found by Master Prynne, May, 31. 1643) who communicated it to the King, as the greatest businesse that ever was put to him.