King Arthur from high school

I have not learned much about King Arthur since like ninth grade, so I do not remember a lot. I'm focusing my blog around my influence map and photos I remember studying in school.
This photo I remember the most from high school about King Arthur and the round table. I'm not really sure who all is included in this photo but I'm sure I will learn more about this photo in our class.
When I think about King Arthur, I do believe he was real and not a made up character. I've always viewed King Arthur as a war hero and also a solider fighting for England at the time. I also believe he as a strong warrior when he pulled the sword out of the stone.
I also remember studying this photo in class when we read a few parts from Le Morte De Arthur. The one thing that has always stuck with me from this photo is how sad everyone is around Arthur when he passes away.