Karl Friedrich is said to have attended the
Institut auf dem Rosenberg for his secondary education. He studied business administration at the
University of Fribourg, Switzerland. He is the chairman and sole owner of
Unternehmensgruppe Fürst von Hohenzollern (Corporate Group Prince of Hohenzollern), He is the singer, saxophonist and leader of the music band Royal Groovin'. He has been a member of the Advisory Board of
Südwestbank, a member of the Advisory Board of
Landesbank Baden-Württemberg (LBBW) since 2007 and a member of the Southwest Regional Advisory Board of
Commerzbank since 2008. According to the suspended
1938 Constitution of Romania, Karl Friedrich is
heir to the throne since 2017, upon the death of former King
Michael. However, in a 2009 interview, he stated that he had no interest in the defunct Romanian throne. ==Marriage and children==