Lorenz has also served as deputy chairman of the Société des Amis of the Almanach de Gotha. He is named member of the Royal Crown Council of Romania in 2015. The title "Prince of Belgium" was granted to him by Royal Decree of 10 November 1995 by his father-in-law, King Albert II of Belgium. He is also referred to as Archduke of Austria-Este by the Belgian monarchy.