Prince Philipp Josias Maria Joseph Ignatius Michael Gabriel Raphael Gonzaga of Saxe-Coburg and Gotha (18 August 1901, Walterskirchen –Vienna，18 October 1985) was a dynast of the House of Wettin, belonging to the House of Saxe-Coburg and Gotha-Koháry. He was the last Fideikommissherr of the branch.

Born in Walterskirchen in Lower Austria, he was the third son of Prince August Leopold of Saxe-Coburg and Gotha and his wife Archduchess Karoline Marie of Austria. At the time of his birth the House of Wettin ruled the Kingdom of Saxony and the Ernestine duchies in Germany, as well as the kingdoms of Belgium, Portugal, Bulgaria and the United Kingdom. He was raised, however, on his family's estates in Austria. After 1933 Prince Philipp supported financially German émigrés and Resistance to Nazism. 1934 he hired the well-known Christian opponent of the Nazi Party, Eugen Kogon to take over the asset management of the House of Saxe-Coburg-Koháry. After the Anschluss in March 1938 Kogon was arrested and, in September 1939, was deported to Buchenwald When he was a teenager all five of the thrones held by his family in Germany were abolished, but his family retained their lands and private property until those located, after World War II, in East Germany and in other Iron Curtain countries were confiscated. Philipp took up residence in Vienna in the Austrian Republic.

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