Question: Betty Mathilde Hennings née Schnell, was a Danish actress who entered the Royal Danish Theatre as a ballet dancer but in 1870 turned to acting, and later became known for her roles in the plays of Henrik Ibsen, especially as Nora in which three-act play, and the play is set in a Norwegian town circa 1879?

Context articles: Royal Danish Theatre
Nora Ibsen
A Doll's House
Betty Hennings
Peer Gynt
Olaf Poulsen
Mette Bødtcher
Carl Dahlén
Ibsen Year
Royal Danish Ballet

The Royal Danish Theatre (Danish: Det Kongelige Teater ) is both the national Danish performing arts institution and a name used to refer to its old purpose-built venue from 1874 located on Kongens Nytorv in Copenhagen.
 The theatre was founded in 1748, first serving as the theatre of the king, and then as the theatre of the country.
 The theatre presents opera, the Royal Danish Ballet, classical music concerts (by the Royal Danish Orchestra, which dates back to 1448), and drama in several locations.
Nora Bergliot Ibsen (born 1951) is a Norwegian theatrical producer, noted for being the producer of the 2006 Ibsen Year, Norway's major anniversary of playwright Henrik Ibsen's death 100 years earlier, including high profile celebrations in multiple countries.
 The Ibsen Year was one of the Norwegian government's major cultural undertakings in 2006, aimed at increasing appreciation of Henrik Ibsen and Norwegian culture internationally.
 The Ibsen Year comprised 8213 separate cultural events, and 83 countries took part in the commemoration.
A Doll's House (Bokmål: "Et dukkehjem" ; also translated as "A Doll House") is a three-act play written by Henrik Ibsen.
 It premiered at the Royal Theatre in Copenhagen, Denmark, on 21 December 1879, having been published earlier that month.
 The play is set in a Norwegian town circa 1879.
Betty Mathilde Hennings née Schnell (1850–1939) was a Danish actress who entered the Royal Danish Theatre as a ballet dancer but in 1870 turned to acting, first performing in Molière's "The School for Wives".
 She later became known for her roles in the plays of Henrik Ibsen, especially as Nora in "A Doll's House".
Peer Gynt ( ; ] ) is a five-act play in verse by the Norwegian dramatist Henrik Ibsen published in 1867.
 It was illustrated by Arthur Rackham as a children's book in 1936.
 Written in Danish—the common written language of Denmark and Norway in Ibsen's lifetime—it is one of the most widely performed Norwegian plays.
 Ibsen believed "Per Gynt", the Norwegian fairy tale on which the play is loosely based, to be rooted in fact, and several of the characters are modelled after Ibsen's own family, notably his parents Knud Ibsen and Marichen Altenburg.
 He was also generally inspired by Peter Christen Asbjørnsen's collection of Norwegian fairy tales, published in 1845 ("Huldre-Eventyr og Folkesagn").
Olaf Poulsen (26 April 1849 – 26 March 1923) was perhaps the best-known Danish comedic stage actor of his time.
 He was famous for playing such roles as Nick Bottom in "A Midsummer Night's Dream" and Falstaff, among others for the Royal Danish Theatre.
 His performance as Old Ekdal in an 1885 production of Henrik Ibsen's "The Wild Duck" was particularly acclaimed.
 Olaf was by accounts an outsize personality, unafraid to insult wealthy or noble men even when insulting a man in public was a crime in Denmark.
 Five minutes of his improvisation on a 1913 film reel were described at the time as "the best film ever to leave a Danish factory."
Mette Bødtcher (born 1965) is a Danish ballet dancer.
 Trained at the Royal Danish Theatre's ballet school, she joined the Royal Danish Ballet in 1983.
 She performed Ophelia in John Neumeier's "Amleth" at the Hamburg Ballet in 1985, where she became a soloist in 1986.
 In Hamburg she danced the title role in "La Sylphide" before returning to Copenhagen where she performed in Balanchine's "Serenade" and Flemming Flindt's "The Triumph of Death".
 She has also danced Alvin Ailey's dramatic solo sequence "Witness".
Carl Dahlén (1770 – December 1, 1851) was a Swedish ballet dancer and choreographer, active first at the Royal Swedish Ballet at the Royal Swedish Opera in Stockholm, and second at the Royal Danish Ballet in Copenhagen at the Royal Danish Theatre in Denmark.
 He belonged to the first male Swedish stars at the Royal Swedish ballet.
The Ibsen Year (Norwegian: "Ibsenåret") was the Norwegian government's official celebration of Henrik Ibsen in 2006, marking the 100th anniversary of his death.
 The Ibsen Year included cultural events in multiple countries, including an opening ceremony in Oslo attended by the royal family and international guests, television programs, cultural events in Italy, Germany, the United Kingdom, the United States, China and other countries, and an International Gala performance at the Great Pyramid of Giza in Egypt, hosted by the country's First Lady Suzanne Mubarak and also attended by Queen Sonja.
 The Ibsen Year's artistic director was Bentein Baardson and the producer was Nora Ibsen.
 The chairman of the supervisory committee was former Norwegian Minister of Culture Lars Roar Langslet.
 The planning committee of the Ibsen Year had a core budget of around 70 million NOK, not counting TV productions and various other costs.
The Royal Danish Ballet is an internationally renowned classical ballet company, based at the Royal Danish Theatre in Kongens Nytorv, Copenhagen, Denmark.
 It is one of the oldest ballet companies in the world and originates from 1748, when the Royal Danish Theatre was founded.
 It was finally organized in 1771 in response to the great popularity of French and Italian styles of dance.
 The company was founded with the opening of the Royal Danish Theatre, which has served as its home since that time.The Royal Danish Ballet school was founded in 1771 under the French ballet teacher Pierre Laurent (1730-1807), Then Vincenzo Galeotti developed it and August Bournonville founded his methodology for the school.