Hildegarde Muller-Uri (born 1894, Greenwich Village, New York City – died 1990) – actually born Hildegarde Petronella Bernhardina Muller – an American visual artist, was a relative, and in fact a third cousin, of Müller-Ury. She was the eldest daughter of amateur artist Henry Muller and his wife Wihelmina, both of whom were of course natives of Canton Uri in Switzerland. Henry Muller had moved from New York to San Augustine in around 1898 to work as a chef in one of Henry Flagler's hotels, and later became to builder and owner of the Hotel Marion at 128 Bay Street. She studied first with Hugh H. Breckinridge (1870–1937) at the Pennsylvania Academy of the Fine Arts and at the Breckenridge Art School in East Gloucester, Massachusetts, between 1925 and 1930, and later at the Art Students League with Frank Vincent Dumond (1865–1951) and possibly with Olinsky, Lewis, and others. She exhibited at the Society of Independent Artists 1929 to 1931.