Onoto Watanna is a pseudonym for Winnifred Eaton (her maiden name) or Winnifred Eaton Reeve (her married name).From the book jacket for Onoto Watanna: The Story of Winnifred Eaton"In 1901, the young Winnifred Eaton arrived in New York City with literary ambitions, journalistic experience, and the manuscript for A Japanese Nightingale, the novel that would sell many thousands of copies and make her famous. Hers is a real Horatio Alger story, with fascinating added dimensions of race and gender."
