One of the eight plotters tried for the attempted assassination, Guy Fawkes, [real name Guido] seems to be the one name we still refer to.
He was caught with several barrels of gunpowder in a property under the House of Lords and was subsequently tortured until he gave up other names associated with the plan.
He jumped to his death from the specially erected scaffold to avoid being partially hanged and was then disembowelled while still alive.
To celebrate avoiding the King's death, the subjects in London were encouraged to light bonfires on November 5th, the day Guido and the gunpowder were discovered, which arose from a tip-off.
It is a fascinating story and no doubt subject to enhancement and distortion over the years but at root it was essentially a plot with religious connotations, as Guido and others opposed the then strict and brutal suppression of anyone who professed the Catholic faith.
Their plot was aimed at replacing protestant King James I with his Catholic-practising sister Elizabeth. All very ancient and complicated.
Yet each year as I arrange a wee fireworks display or attend a bigger event I'm left with the nagging doubt that I really shouldn't be celebrating at all.
Perhaps the persistence of such a tradition over so many years partly explains why it is still forbidden for a practising Catholic to assume the throne in England. A very silly rule indeed.
So I will still enjoy a few fireworks tonight but in the spirit of fun, not in celebration of monarchy.
Why is talking not a sport?
I'm not very physically fit. I'm rubbish at sports, gyms, anything in fact that involves exertion.
What I do like is walking and talking. These pursuits I can manage no bother, especially the latter. Everyone's been asking if I've got fitter by dancing lately but to be honest the Argentine Tango isn't really a high energy dance, at least the way I do it.
My practice however is held in the Virgin Active gym full of body beautifuls. Subconsciously I've convinced myself that I'm fitter just by being there.
With all the testosterone and muscles around it's like auditions for Gladiator.
Listening to the prosecution case in the phone-hacking trial
I said last week I was looking forward to the criminal trial of the former bosses of the News International papers the Sun and News of the World. The first week didn't disappoint as the prosecution case was outlined over three days.
I listened to Andy Coulson give evidence at Tommy's trial in Glasgow in 2010. He, Rebekah Brooks and five others now face serious charges.
It emerged that three former senior journalists at the News of the World - Greg Miskiw, James Weatherup and Neville Thurlbeck - have already pled guilty to conspiracy to illegally access voice-mails.
I am confident this trial will reveal a lot more about certain shenanigans which will rightly shock and anger the general public.