Richard III is the king whose body was dug up in a car park and was recently reburied with great pomp and ceremony.
He is also the king to whom Shakespeare gave the famous words, “A horse! A horse! My kingdom for a horse!”
The discovery of his skeleton settled once and for all the long-debated question of whether he really had a hump back, or it was just an invention of Shakespeare. The skeleton's spine was indeed twisted. I saw a TV documentary where they found a young man whose spine was twisted in exactly the same way, and proved that he could be formidable on horseback, but handicapped on foot. So Shakespeare's cry was indeed feasible.