Carl Du Prel

Karl Ludwig August Friedrich Maximilian Alfred, Freiherr von Prel, or, in French, Carl Ludwig August Friedrich Maximilian Alfred, Baron du Prel (3 April 1839 Landshut, Germany – 4 August 1899 Heiligkreuz, Austria), was a German philosopher and writer on mysticism and the occult. In the literature it has become customary to refer to him under various abbreviated French forms of his name, usually "Carl Du Prel", "Baron Carl Du Prel" or simply "Baron Du Prel".