Victor, Baron Horta was a Belgian architect and designer. John Julius Norwich said he was "undoubtedly the key European Art Nouveau architect." Horta is one of the most important names in Art Nouveau architecture. Some people say his Hotel Tassel in Brussels was the first time the style was used on architecture. In 1932 King Albert I of Belgium gave Horta the title of Baron for his services to architecture. Four of the buildings he designed are UNESCO World Heritage Sites.
Jean-Baptiste Frederic Isidor, Baron Thielemans, known as Toots Thielemans, was a Belgian jazz musician. He is well known for his guitar and harmonica playing as well as his whistling. Thielemans is one of the greatest harmonica players of the 20th century. He worked as a bandleader, as a sideman, and has been on dozens of movie soundtracks. In 2009 he became NEA Jazz Master, the highest honour for a jazz musician in the United States. He is perhaps best-known to the American public for whistling the melody in commercials for Old Spice cologne.