Question: What was the 1920's stage name of the actress who starred with Ernst Reicher and Johannes Riemann  in The Armoured Vault ?

Context paragraphs:
Death the Victor: Death the Victor (German:Sieger Tod) is a 1920 German silent film directed by Nils Olaf Chrisander and starring Uschi Elleot, Werner Krauss and Johannes Riemann.

Everything for Gloria: Everything for Gloria (German: Alles für Gloria) is a 1941 German romance film directed by Carl Boese and starring Leo Slezak, Laura Solari and Johannes Riemann.  The film was shot at the Cinecittà in Rome, and marked the German debut of the Italian actress Solari.

Anna Karenina (1920 film): Anna Karenina is a 1920 German silent historical film directed by  Frederic Zelnik and starring Lya Mara, Johannes Riemann and Heinrich Peer.  It is an adaptation of Leo Tolstoy's novel "Anna Karenina".

Mary Nolan: Mary Nolan (December 18, 1902 – October 31, 1948) was an American stage and film actress, singer and dancer.  She began her career as a Ziegfeld girl in the 1920s performing under the stage name Imogene "Bubbles" Wilson.  She was fired from the "Ziegfeld Follies" in 1924 for her involvement in a tumultuous and highly publicized affair with comedian Frank Tinney.  She left the United States shortly thereafter and began making films in Germany.  She appeared in seventeen German films from 1925 to 1927 using a new stage name, "Imogene Robertson".

Rigolboche: Amelia Marguerite Badel (stage name, Rigolboche; nicknamed "the Huguenot"; Nancy, 13 June 1842 - Bobigny, 1 February 1920) was a French dancer.  Credited for inventing the can-can, her acme occurred from 1858 to 1861.  Her stage name, Rigolboche, is a slang term formed from the word "funny" and the suffix "boche" designating a "joker" or a very funny person.

Colette Brettel: Colette Brettel was a British stage and film actress.  Born Dorothy Nicolette Pettigrew in London, she made her screen debut in the 1920 film "Wuthering Heights" and appeared in several British films of the early 1920s including "The Prodigal Son".  Following the Slump of 1924, in which the number of British films released sharply declined, she moved to Germany.  Her film career ended with the introduction of sound.  She was married to the Dutch actor Ernst Winar.

George Bully: George Bully is a 1920 German silent mystery film directed by Max Obal and starring Ernst Reicher as the detective Stuart Webbs, who was modeled on Sherlock Holmes.

The Armoured Vault (1926 film): The Armoured Vault (German:Das Panzergewölbe) is a 1926 German silent thriller film directed by Lupu Pick and starring Ernst Reicher, Johannes Riemann and Mary Nolan.  It was part of a popular series featuring the detective character Stuart Webbs.

The Grey Magpie: The Grey Magpie (German:Die graue Elster) is a 1920 German silent mystery film directed by Max Obal and starring Ernst Reicher as the detective Stuart Webbs, part of a long-running series featuring the character.

The Leap in the Dark: The Leap in the Dark (German:Der Sprung ins Dunkle) is a 1920 German silent mystery film directed by and starring Ernst Reicher as the detective character Stuart Webbs, part of a long-running series of silent films.

Supporting paragraphs: The Armoured Vault (1926 film) Mary Nolan
Answer: Imogene "Bubbles" Wilson.