Arthur is a male given name possibly of Brythonic Celtic origin. Another theory is that the name is from Latin origin, derived from the Roman clan Artorius who lived in Roman Britain for centuries. Its popularity derives from it being the name of the legendary hero King Arthur. It may derive from the Celtic Artos meaning “Bear”. A common spelling variant used in many Slavic, Romance, and Germanic languages is Artur. In Spanish and Italian it is Arturo.