Booth Tarkington 
His Own People [PDF ebook] 

Many people who are traveling abroad take the opportunity to forge a new, albeit temporary, identity for themselves. In his quest to be welcomed among the upper crust in Europe, American Robert Russ Mellin creates a moneyed, cultured alter ego. However, before long, Mellin happens to encounter a man who is the embodiment of everything that he himself aspires to be. Will he survive this collision of the real and the imaginary?