In what year was the mother of Manon Gropius born?
In Memory Of ... (ballet): In Memory of ... is a ballet in one act made by New York City Ballet ballet master Jerome Robbins to Berg's "Violin Concerto (to the Memory of an Angel)" of 1935 (written on the death of Manon Gropius, daughter of Alma Mahler, Gustav Mahler's widow, and Walter Gropius), based on themes from Mahler, a Carpathian folk song, and Bach's "O Ewigkeit, du Donnerwort", BWV 20. Alma Mahler: Alma Maria Mahler Gropius Werfel (born Alma Margaretha Maria Schindler; 31 August 1879 – 11 December 1964) was a Viennese-born composer.
1879