Frederick Mont was part owner of Galerie Sanct Lucas in Vienna (est. 1926), under his given name of Adolf Fritz Mondschein. In 1938 he left Austria and came to the US via England in 1939, changed his name and established himself, with his wife Betty (née Berta), as a dealer in old master paintings. Their business was in two locations in New York; at The Langdon, 2 East 56th Street until early 1957, and then at 465 Park Avenue (the Ritz Tower). Mont worked primarily with the American dealers Newhouse and Victor Spark. He also had an art dealer business based in London, where he was partner with Wilhelm Austerlitz [d. 1940], Berta's father. Mont died in New York on 20 August 1994.