Guy, 1570–1606, English conspirator and leader in the Gunpowder plot of 1605: Guy Fawkes Day is observed on November 5 by the building of effigies and bonfires.
Fawkes (fôks) English conspirator executed for his role in the Gunpowder Plot, an attempt to kill James I and blow up Parliament on November 5, 1605, to avenge the persecution of Roman Catholics in England.