Isn't it true that the great English dramatist is real? Well, perhaps. Or did he? According to some researchers, "William Shakespeare" was a pen name, and the individual who penned all those pieces was never revealed to the public.
While some researchers think Robin Hood's narrative was inspired by a nobleman called Fulk FitzWarin, who revolted against King John, the renowned bandit himself never lived.
For generations, people have told stories about King Arthur and the Knights of the Round Table. But was Arthur a genuine person, or was his narrative based on a real person?
Some historians suggest Roman military leader Lucius Artorius Castus, while others suggest Riothamus, King of the Britons. The man who claimed the sword Excalibur is most likely a legend.
Yes, this is said to be the individual who devised the Pythagorean theorem. His impact on mathematics continues to this day, but did he actually exist?
Some academics claimed that his disciples, known as Pythagoreans, were responsible for all he allegedly wrote. Others say he was a made-up character who pretended to be the Pythagorean leader.