No. The real father of Prince Harry is Charles,Prince of Wales.
People can be quite confounding when it comes to the stories they concoct!
James Hewitt is not Harry's father because Diana and Hewitt did not begin their affair till Harry was about two years old.
Diana did not have an affair with her brother.
Harry is a mix of Spencer-Mountbatten-Windsor genetics. Some features and coloring are Spencer family, while deepset eyes, low eyebrow bridge, narrow, crooked, nasal bridge are features found in Prince Charles and Prince Philip.