Rieser, Marianne, 1899-1965.

Marianne ("Mizzi") Rieser (née Werfel) was the younger of Franz Werfel's two sisters; she was married to Ferdinand Rieser, who from 1926 until 1938 was director of the Zürcher Schauspielhaus; the Riesers emigrated to the U.S. around 1940 and lived in New York City; they returned to Zurich in 1946. After Ferdinand's death in 1947, Marianne returned to New York City; she later moved to California. Marguerite Davidson (née Rieser; known familiarly as "Mucki") was the daughter of Marianne and Ferdinand. Albine Werfel was Werfel's mother. Hanna Fuchs-Robetin (née Werfel; 1894-1964) was Werfel's other sister; she was married to the Prague businessman Herbert Fuchs-Robetin (1886-1949). Dr. S. Rieser was presumably the father of Ferdinand Rieser. Ellen Wolff was possibly a secretary for Marianne Rieser. The periodical Das Buch: Revue für Literatur, Kunst und Wissenschaft published an article about Werfel after his death and requested a photograph or portrait of him.

From the description of Correspondence with Alma Mahler, Franz Werfel, and Adolf Klarmann, 1938-1964. (University of Pennsylvania Library). WorldCat record id: 155865041