Back in the fearsome yore
of 1433.
when poor benighted man
made-do without T.P.
A band of English braves
made war on Sarcen knaves.
Both armies camped in sand
while reprieved from hand-to-hand.
Young Rollo no hero
as a knight they ranked him 0.
So he stayed behind to cook
or fill his colouring book.
One day the winds were high
but Rollo had to try
and bake some bread.
"THE MEN MUST BE FED!"
Richard the Lionheart had said.
So he got out the stuff
but deuce! it was tough
and everything blew away
which filled Rollo with dismay.
He'd spilled the baker's yeast
and it scattered throughout the middle east
so now their dough rises too.
I swear this story's...true?

(but not well-metered ;P)