As draconian as it seems, there was great wisdom in the decision by the Screen Actors Guild that no two members can go by the same name professionally---you can't even use your own legal name if someone else has already taken it. The policy totally prevents snafus like this.
It makes me glad I have a (nearly) unique name; although I'm likely to see a variant of this problem as I'm moving to a town (in Virginia) named Farmville---est'd 1798. sigh