Stader was born in
Budapest, Austria-Hungary, on November 5, 1911, as Maria Molnár. During and after World War I, the price of food in Budapest was so high that it was difficult for her parents to support their five children. Maria and her younger sister, Elisabeth, were taken to Switzerland by
The Salvation Army to recuperate for three months after being diagnosed with malnutrition. There, Maria's foster parents requested she stay for a full nine months. However, once in Budapest again, Maria fell seriously ill and it was also determined she would need her tonsils operated on. Her foster parents arranged for her to return to Switzerland. Because of difficulties with the immigration office, Maria could not remain in the
canton of Zürich, so her foster father found her a place with the Stader family in
Romanshorn, where there is also the commemorative Maria-Stader path. They later adopted her. In 1939, Stader married Hans Erismann, the music director of
Weinfelden and later the choir director of the
Zürich Opera House. Through the husband of her vocal teacher, Mathilde Bärlocher, she met
Stefi Geyer and her husband. Geyer herself was born in Budapest and had moved to Zürich in 1920; she then became an ongoing supporter of Stader's career. Another native of Budapest,
Ilona Durigo, became her vocal teacher in 1935 in Zürich and introduced her to Hermann and
Lily Reiff (a student of
Franz Liszt). The Reiffs' home was the frequent meeting place of
Adolf Busch and his brother
Hermann Busch,
Thomas Mann and the entire ensemble of the
Zürich Opera and
Zürich Theater.
Fritz Busch arranged for Stader to go to the
Schnabel School in
Tremezzo, run by the wife of
Artur Schnabel, a few years later. From 1938 on, Stader received training from
Giannina Arangi-Lombardi in Milan. Stader was a close friend of the Swiss politician
Walther Bringolf, as well as of numerous musicians – especially pianist
Clara Haskil and the Hungarian conductor
Ferenc Fricsay (with whom she became acquainted through
Rolf Liebermann). She was also a friend of the French film director,
Emil-Edwin Reinert and she corresponded with
Albert Schweitzer. ==Career==