Acaba de decirlo Marv Wolfman en Facebook:
REVEALED FOR THE FIRST TIME, THE ORIGIN OF BLACK CAT'S SECRET IDENTITY NAME. I've been talking about Black Cat and realized there's something I've only briefly mentioned once or twice but most don't know it. As I said I originally was going to use Black Cat in Spider-Woman and only put her into Spider-Man instead at the last moment. But her Spider-Woman connection totally explains her name. Spider-Woman's secret ID was Jessica Drew. Jessica after my daughter and Drew after Nancy Drew. As a joke I decided to call B.C. Felicia Hardy. Felicia for cat (feline) and Hardy because if I had Nancy Drew I might as well also have the Hardy Boys. And that, as Paul Harvey used say, is the rest of the story.