From the HistoryChannel.com
At about midnight on the night of November 4-5, Sir Thomas Knyvet, a justice of the peace, found Guy Fawkes lurking in a cellar under the Parliament building and ordered the premises searched. Some 20 barrels of gunpowder were found, and Fawkes was taken into custody. During a torture session on the rack, Fawkes revealed that he was a participant in an English Catholic conspiracy to annihilate England’s Protestant government and replace it with Catholic leadership….
By torturing Fawkes, King James’ government learned of the identities of his co-conspirators. During the next few weeks, English authorities killed or captured all the plotters and put the survivors on trial, along with a few innocent English Catholics.
Guy Fawkes himself was sentenced, along with the other surviving chief conspirators, to be hanged, drawn, and quartered in London. Moments before the start of his gruesome execution, on January 31, 1606, he jumped from a ladder while climbing to the hanging platform, breaking his neck and dying instantly.
In 1606, Parliament established November 5 as a day of public thanksgiving. Today, Guy Fawkes Day is celebrated across Great Britain every year on November 5 in remembrance of the Gunpowder Plot. As dusk falls, villagers and city dwellers across Britain light bonfires, set off fireworks, and burn effigies of Guy Fawkes, celebrating his failure to blow Parliament and James I to kingdom come.
The guy was a terrorist and 398 years later he still has a day named after him.