Marcia Davenport was an American writer and music critic. She is best known for her 1932 biography of composer Wolfgang Amadeus Mozart, the first American published biography of Mozart. Davenport also is known for her novels The Valley of Decision and East Side, West Side, both of which were adapted to film in 1945 and 1949, respectively. No. 1 on The New York Times Fiction best seller list for 2 weeks, from the issue of February 8, 1948. Wiki link