Usually something like "Robin of Locksley"
I was going to write about the historical howlers found in most Robin hood films. I had to remind myself that these were American films about English history. Warner Bros et al would have made Robin an American if they thought they could get away with it.
To be fair it was the English who invented the aristocratic Robin Hood (in some Tudor plays), though I think the idea of him as a crusader (which seems the most usual version now) only began in Hollywood, with the Douglas Fairbanks film (I haven't looked that up, could be wrong).
OK it's a legend, legends change over time, this one has been changing ever since the first surviving ballads (and probably before that), though the comic book fantasy antics of the latest film seems a bit excessive. However it would be interesting, for a change, to see a 'realistic' portrayal of what would most likely be the original (if there was one), a forest-dwelling yeoman outlaw, probably early or mid 13th century, maybe the Montfortian survivor idea. It might not be glamorous, but could still be dramatic though.
'of Locksley' isn't necessarily upper class, one of its first mentions is a story collected by Dodsworth in the early 17th century, where Robert of Locksley was outawed for killing his stepfather while ploughing - so presumably not terribly aristocratic.