- Profession: (Former) Austro-Hungarian army nurse.
- Relation to Mahler: Companion Alma Mahler (1879-1964).
- Born: 1895
- Died: 1977
- Buried: 00-00-0000 Vienna, Austria.
Agnes Ida Gebauer, known familiarly as "Schulli," was a nurse first hired by Alma Mahler (1879-1964) in 1920 to care for her daughter Manon; Gebauer remained in Alma's service for many years and later returned to care for her during the last several years of her life, in New York, until Alma's death in 1964.
Gebauer's letters are sometimes signed "Schulli" or "Ida" and in later communications several times "Ida Wagner." The death announcement sent by her family gives her name as Agnes Ida Wagner. Isolde Klarmann was the wife (and later the widow) of Adolf Klarmann. Erich Rietenauer was a friend of Alma Mahler's family and of Ida Gebauer. Ruth Stadelmann was the editor of a collection of selected works by Franz Werfel and probably an acquaintance of Adolf Klarmann's.
- From 1920.
- Nursemaid for Manon Gropius (1916-1935).
- Nurse for Alma Mahler (1879-1964).
- 04-1934 With Alma Mahler by airplane back to House Alma Mahler Venice 1922-1934 (Fondamenta Contarini San Polo 2542, Casa Mahler) because Manon Gropius (1916-1935) is seriously ill.
- 1938 Ida Gebauer smuggles cash money for Alma Mahler (1879-1964) to Zurich.
- 1960-1964 with Alma Mahler (1879-1964) in New York.