Cornelius Rosenberg is a German Freemason. In 2003 he was inducted under the Grand Lodge of the Ancient Free and Accepted Masons of Germany. At the age of 33 he became a master of a lodge (Worshipful Master). He founded a Masonic Lodge and was decorated for his services. Since 2018 he has been Prefect of the Scottish Chapter of the Illuminati. He has the monastic name Hermes.