Meaning: Exact meaning unknown. It could come from the Celtic words for bear and man/king.
Origin: Popular tales from the 6th century. He was the mythological king of the Britons. There is still a debate over whether he was an actual person.
Usage: Arthur has been used as a names for centuries. It is currently ranked 338 in the U.S. popularity chart. It is also enjoying popularity in many other European countries particularly Belgium (#6) and France (#12).
Arthur is a wonderful name with a long history and great mythological background.