I live over 100 miles from the airport in wonderful Northamptonshire(!), and from an outsider I think the name is aweful and completely misleading!
Everyone thinks of Robin Hood as being associated with Nottingham and is over 40 miles from there. I appreciate locals might disagree and say Robin Hood is associated to the Doncaster area, but an outsider like myself is not really going to know this.
I can see why people from Nottingham and East Midlands Airport are upset by the name. Im surprised Ryanair have not had anything to do with name!
It should be called Sheffield International!
Im not into all this naming airports after people and should leave it to the Americans, the name Liverpool John Lennon Airport is bad enough. If it really has to be named after someone let it atleast be someone real and not some fictitous character!