While not exactly the same there are quite a few around that are close. Seeing Madame X, Lady X and Mistress X hasn't been uncommon over the years. Mistress Troy and Troy Orleans (both of NYC) sometimes get confused.....and then there is DominaM of Paris and DominatrixM of Warsaw (and Warsaw Prison)

I don't think it's a huge deal as anyone looking to book should be doing more than casual research. If you do it is pretty easy to ensure you are approaching the right lady.