High Quality Content by WIKIPEDIA articles! John Grant (c. 1570 – 30 January 1606) was a member of the failed Gunpowder Plot, a conspiracy to replace the Protestant King James I of England with a Catholic monarch. Grant was born around 1570, and lived at Norbrook in Warwickshire. He married the sister of another plotter, Thomas Wintour. Grant was enlisted by Robert Catesby, a religious zealot who had grown so impatient with James`s lack of toleration for Catholics that he planned to kill him, by blowing up the House of Lords with gunpowder. Grant`s role in the conspiracy was to provide supplies for a planned Midlands uprising, during which James`s daughter, Princess Elizabeth, would be captured. However, on the eve of the planned explosion, Guy Fawkes was discovered guarding the explosives the plotters had positioned in the undercroft beneath the House of Lords, and arrested.