Who is the Man behind this Myth?

"REMEMBER, REMEMBER THE FIFTH OF NOVEMBER, THE GUNPOWDER TREASON AND PLOT. I KNOW OF NO REASON WHY THE GUNPOWDER TREASON SHOULD EVER BE FORGOT." -V (comic and movie)

A popular British rhyme is often quoted on Guy Fawkes Night, in memory of the Gunpowder Plot:

Remember, remember, the 5th of November

The Gunpowder Treason and plot ;

I know of no reason why the Gunpowder Treason

Should ever be forgot.

Guy Fawkes, Guy Fawkes,

'Twas his intent.

To blow up the King and the Parliament.

Three score barrels of powder below.

Poor old England to overthrow.

By God's providence he was catch'd,

With a dark lantern and burning match

Holloa boys, Holloa boys, let the bells ring

Holloa boys, Holloa boys, God save the King!

Hip hip Hoorah !

Hip hip Hoorah !

A penny loaf to feed ol'Pope,

A farthing cheese to choke him.

A pint of beer to rinse it down,

A faggot of sticks to burn him.

Burn him in a tub of tar,'

Burn him like a blazing star.

Burn his body from his head,

Then we'll say: ol'Pope is dead.