A discouerie of the vnnatvrall and traiterovs conspiracie of the Scottisch papists against God : his kirk, their natiue cuntrie, the Kingis Majesties persone and estate : set downe, as it was confessed and subscriuit be M. George Ker, yet remaining in prisone, and David Grahame of Fentrie, justly executed for his treason in Edinburgh, the 15. of Februarie 1592 : wherunto are annexed certaine intercepted letters, written by sundrie of that factioun to the same purpose ..