If you’re a reporter who covers the art world, chances are you have Google Alerts set for all the major players: “Larry Gagosian,” “David Zwirner,” “Marian Goodman,” “Marc Glimcher,” and, of course, the lovable downtown dealer “Gavin Brown,” among others. As you’ve no doubt noticed from that sampling, Gavin Brown’s name, by no means generic, still tends to be more common than many of the others found on Planet Art. And as such our Google Alert has turned up some shocking discoveries. For instance, did you know that there’s a whole host of Gavin Browns who are not Gavin Brown? Here is a guide to some of them.