While reading through this interesting thread, I remember doing this poem at school! The poem (and more)come up on the link below.
http://thereview2014.blogspot.com/2015/06/magna-carta-week-magna-carta-childhood.html'King John'
John was a tyrant, John was a tartar
John put his name to the Great Big Charter.
Every baron from Thames to Tweed
Followed the road to Runnymede.
Every baron had something to say
To poor perplexed King John that day.
"Pray sign your name," said Guy de Gaunt,
"It's easily done and it's all we want."
"A J and an O and an N" said Hugo, Baron of Harpenden.
Quietly spoke the Lord Ranbure,
"Oblige Lord King with your signature."
"Your name my liege, be writ just here,
A mere formality," laughed de Bere.
"A stroke of the pen and the thing is done,"
Murmured Sir Roger of Trumpington.
"Done in a twinkling," sniffed de Guise.
Said Stephen Langton, "Sign if you please!"
So many people egging him on
I can't help feeling sorry for John.
(There is an alternative ending...)
Too many people he did wrong
We have no cause to pity John.