Answer:
No, the Knights of the Round Table were not real, they are fictional characters that belong to the legendary stories belonging to the Matter of Britain: the collection of Medieval Literature associated with Britain, and Briton legendary kings and Knights.
As for where they lived, according the stories, just like King Arthur, they lived in Britain (modern-day England), probably on the western side of the country.
It establishes a kind of curiosity. This means that a kind of curious tone was created.
