Which person that Roger Manvell made a biography of had the middle name of Luitpold?
Heinrich Himmler Heinrich Luitpold Himmler (] ; 7 October 1900 – 23 May 1945) was "Reichsführer" of the "Schutzstaffel" (Protection Squadron; SS), and a leading member of the Nazi Party (NSDAP) of Germany. Nazi leader Adolf Hitler briefly appointed him a military commander and later Commander of the Replacement (Home) Army and General Plenipotentiary for the administration of the entire Third Reich ("Generalbevollmächtigter für die Verwaltung"). Himmler was one of the most powerful men in Nazi Germany and one of the people most directly responsible for the Holocaust.
Louis Ferdinand, Prince of Prussia Louis Ferdinand Victor Edward Albert Michael Hubert, Prince of Prussia (German: "Louis Ferdinand Viktor Eduard Albert Michael Hubertus Prinz von Preußen"; 9 November 1907 – 26 September 1994) was a member of the royal House of Hohenzollern and pretender to the abolished German throne. He was also noteworthy as a staunch opponent of the Nazi Party, a businessman, and a patron of the arts.