Sandro del Prete
The knight of the woeful countenance - as described in the world-famous novel Don Quixote by Cervantes - was a brave, though somewhat foolish, adventurer who charged windmills, believing them to be his enemies. Of course, he was not the only person to suffer from delusions. Even today, a good many people charge at windmills. Depending on how we look at the illustration, we can see either Don Quixote's portrait, or the famous knight in all his glory, mounted on his trusty steed, with his faithfull squire Sancho Panza looking over his shoulder.