 However, on the basis of genealogical research (amongst others conducted by Caruso family friend Guido D'Onofrio), biographers Pierre Key, Francis Robinson, and Enrico Caruso Jr. and Andrew Farkas, have proven this to be an urban legend.Caruso himself and his brother Giovanni may have been the source of the exaggerated number.Caruso's widow Dorothy also included the story in a memoir that she wrote about her husband.