 Garnet 's trial took place on Friday 28 March 1606 . He was taken to the Guildhall by closed coach ; an unusual method , considering prisoners were usually walked to trial , though the authorities may have had some concern about support from a sympathetic crowd . The trial began at about 9 : 30 am and lasted all day . In attendance were King James ( hidden from public view ) and several courtiers including Lady Arbella Stuart and Catherine Howard , Countess of Suffolk . Garnet was introduced with his various aliases , which included " Whalley , otherwise Darcy , otherwise Roberts , otherwise Farmer , otherwise Philips " . He was accused of having conspired with Catesby on 9 June 1605 to kill the king , his son , and to " alter and subvert the government of the kingdom and the true worship of God established in England " . He was also accused of having conspired with several others to blow up the House of Lords with gunpowder . He pleaded " not guilty " . 
