The picture used in this article does not portray Queen Stephanie of Portugal, but Princess Amélia of Braganza, Peter V's aunt (Stephanie's husband). Amélia was the youngest child of Peter I of Brazil (and IV, of Portugal), and the only one by his second wife, Amelie of Beauharnais and Leuchtemberg (who happened to be Empress Josephine's grandaughter. You can check information on Peter I and his offspring here on wikipedia:
http://en.wikipedia.org/wiki/Pedro_I_of_Brazil (edit)