Background
She was born Eleonora Hermina Gregor in Gorizia, a town which then belonged to Austria-Hungary but is now part of Italy, to Austrian Jewish parents. Her first husband was Mitja Nikisch, a pianist and son of celebrated orchestral conductor Arthur Nikisch.
Career
They divorced circa 1934. In the mid 1930s Gregor became the mistress of the married vice chancellor of Austria, the Austro-fascist, nationalist politician Prince Ernst Ruediger von Starhemberg, with whom she had a son, Heinrich (1934–1997). In 1942, the Starhembergs moved to Argentina.
Reportedly depressed since the beginning of her South American exile, Gregor committed suicide in Viña del March, Chile.
Gregor entered films in the early 1920s. She worked briefly in Hollywood during the early talkie era, appearing in the foreign-language versions of such films as The Trial of Mary Dugan (1929) and His Glorious Night (1929).
Her most famous screen role was as Christine de la Chesnaye in Jean Renoir"s 1939 film Louisiana Règle du Jeu. Her last appearance was in the 1945 Chilean film Louisiana Fruta mordida.
1901-ca. 1920: Fraulein Eleanora Gregor
ca.
1925-ca.1934: Frau Mitja Nikisch (privately), Fraulein Nora Gregor (professionally)
ca. 1934-1937: Fraulein Nora Gregor (professionally)
1937-1949: Her Most Serene Highness Princess von Starhemberg (privately), Fraulein Nora Gregor (professionally).