House of Saxe-Coburg and Gotha
Prince Ludwig Gaston of Saxe-Coburg and Gotha (Ludwig Gaston Klemens Maria Michael Gabriel Raphael Gonzaga; 15 September 1870 – 23 January 1942), known in Brazil as Dom Luís Gastão, was a German prince of the House of Saxe-Coburg and Gotha-Koháry, and the last surviving grandchild of Emperor Pedro II of Brazil.