A plaquette in the National Gallery depicting Saint George and the Dragon can be attributed to Moderno on both the basis of style as well as because of a reference to this subject in a Roman notarial document of 1522 (1523). Although previously published, Bertolotti's transcriptions mangled the name of the author of the model for the diamond Saint George Brooch. Since Bertolotti also used this document to provide a completely false name for the Milanese goldsmith, Caradosso Foppa, this article also seeks to highlight the dangers that await scholars who rely uncritically on his many archival publications.