Artur is a cognate to the common male given name Arthur meaning "bear-like", or “of honour”. It is believed to possibly be descended from the Roman surname Artorius or the Celtic bear-goddess Artio or more probably from the Celtic word artos ("bear"). Other Celtic languages have similar first names, such as Old Irish Art, Artúur, Welsh Arth - which may also be the source for the modern name. Art is also a diminutive form of the common name Arthur. In Estonian, and many Romance, Slavic and Germanic languages the name is spelled as Artur. The Finnish versions are Arttu and Artturi.
https://en.wikipedia.org/wiki/Artur