The late speech and testimony of William Gogor, one of three desperate and incorrigible traitors, execute at the Grass-Mercat in Edinburgh, the eleventh day of March, 1681, for disowning his sacred Majesties authority; and owning and adhering to these bloody and murdering principles, contained in that execrable declaration at Sanquhar, Carglls [sic] traiterous covenant, and sacrilegious excommunicating of the king, by that arch-traitor Cargil, and avowing of themselves to be bound in conscience, and by their covenant, to murder the king, and all that serve under him; being armed (the time they were apprehended) for that purpose