A phrase/name can't be copyrighted and prior art is irrelevant to copyright. Nothing stops them from claiming it, but it's a non-sequitur so there is really no

A phrase/name can't be copyrighted and prior art is irrelevant to copyright. Nothing stops them from claiming it, but it's a non-sequitur so there is really no reason to claim it. I don't think any individual or organization is stopping Greeks from establishing their own Olympic Island.