What's the difference between i.e. and e.g.?
legendary British king who appears in a cycle of medieval romances (known as the matter of Britain) as the sovereign of a knightly fellowship of the Round Table. It is not certain how or where (in Wales or in those parts of northern Britain inhabited by Brythonic-speaking Celts) these legends originated or whether the figure Arthur was based on a historical person. See also Arthurian legend.