Uhm. No. No sane historian would say "King Arthur did exist!".
However I think many historians agree that a person LIKE King Arthur may have existed. That means there was a person who had some of the attributes King Arthur allegedly had.
The same goes for Jesus. There was probably a person around the time of the Biblical Jesus who probably came from roughly the same background and had a cult following considering him the Son of God. He probably even performed some magic tricks. But it isn't very useful to call him "THE Jesus" just to connect the Biblical story with a historical person, simply because the two probably had little in common.
Heck, look at the many different biographies about people like Elvis or Marilyn Monroe these days. And those two have only died a few decades ago -- think what people will believe if they are still remembered in two THOUSAND years and most of their reference material will be written a hundred years from now.
However I think many historians agree that a person LIKE King Arthur may have existed. That means there was a person who had some of the attributes King Arthur allegedly had.
The same goes for Jesus. There was probably a person around the time of the Biblical Jesus who probably came from roughly the same background and had a cult following considering him the Son of God. He probably even performed some magic tricks. But it isn't very useful to call him "THE Jesus" just to connect the Biblical story with a historical person, simply because the two probably had little in common.
Heck, look at the many different biographies about people like Elvis or Marilyn Monroe these days. And those two have only died a few decades ago -- think what people will believe if they are still remembered in two THOUSAND years and most of their reference material will be written a hundred years from now.