Question: What Swedish-born American film actress during the 1920s and 1930s lived as a recluse from public and society for a significant portion of her life?

Context articles: Tom Rolf
Amy Gumenick
Mauritz Hugo
Ada Falcón
David Sundstrand
Gustaf Wilhelm Hammar
Greta Garbo
Hjalmar G. Carlson
Herman A. MacDonald
Recluse

Ernst R. Rolf (December 31, 1931 – July 14, 2014), better known as Tom Rolf, was a Swedish-born American film editor who worked on at least 48 feature films in a career spanning over fifty years.
 Most notable among these films are Martin Scorsese's "Taxi Driver", for which he was nominated for the 1976 BAFTA Award for Best Editing, and Philip Kaufman's "The Right Stuff", for which he and his editing team won the 1983 Academy Award for Best Film Editing.
 Other notable films he edited include "WarGames", "Jacob's Ladder", "Heat" and "The Horse Whisperer".
Amy Jaclyn Gumenick (born 17 May 1986) is a Swedish-born American actress, best known for her roles as Natalee Holloway in the television film of the same name (2009) and its sequel, as the young Mary Winchester in "Supernatural" (2008–10), as Carrie Cutter / Cupid in "Arrow" (2014–present) and as Philomena Cheer in "" (2014–17)
Mauritz Hugo (1909–1974) was a Swedish-born American film and television actor.
Ada Falcón (17 August 1905 – 4 January 2002) was an Argentine tango dancer, singer and film actress of the 1920s and 1930s.
 She starred in the film "Ídolos de la radio" in 1934.
 She was famous for her tango work and made over 200 recordings in the 1920s and 1930s.
 She shared a long relationship with orchestra leader Francisco Canaro.
 She mysteriously disappeared from the limelight in 1942 and lived as a recluse until she died in 2002 at age 96.
David Sundstrand (1880-1930) was a Swedish-born American inventor of the 10-key adding machine, 10-key calculator keyboard, a 10-keypad now used on computer keyboards, and a co-founder of Sundstrand Corporation.
 His 1914 adding machine had the first now common place keyboard for 10-key calculators and numeric keypads.
 This 1914 invention was filed as patent No. 1198487.
Gustaf Wilhelm Hammar (Gustav Vilhelm Hammar) (June 22, 1893 – August 19, 1954) was a Swedish-born American experimental physicist.
 He was the eldest of six children of Anders Vilhelm Hammar and Elin Christina Hammar (née Olsson).
 He emigrated to the United States in 1913, attended Bethel University in St. Paul, Minnesota, and by 1920 was married and living with his wife, Louise (with whom he was ultimately to have four children), in King County, Washington.
Greta Garbo (born Greta Lovisa Gustafsson; ] ; 18 September 1905 – 15 April 1990), was a Swedish-born American film actress during the 1920s and 1930s.
 Garbo was nominated three times for the Academy Award for Best Actress and received an Academy Honorary Award in 1954 for her "luminous and unforgettable screen performances."
 In 1999, the American Film Institute ranked Garbo fifth on their list of the greatest female stars of classic Hollywood cinema, after Katharine Hepburn, Bette Davis, Audrey Hepburn, and Ingrid Bergman.
Hjalmar Gotfried Carlson (1879 - c. 1930s) was a Swedish-born American sheet metal worker, expert in metal drawing, superintendent, and inventor, who worked in Worcester, Massachusetts.
 He is known for being awarded the first ASME Medal in 1921, and the first Holley Medal in 1924.
Herman A. MacDonald was a Swedish-born American politician who served as Mayor of Beverly, Massachusetts and Massachusetts Commissioner of Public Works.
A recluse is a person who lives in voluntary seclusion from the public and society.
 The word is from the Latin "recludere", which means "shut up" or "sequester".
 Historically, the word referred to a hermit's total isolation from the world.
 Examples are Symeon of Trier, who lived within the great Roman gate Porta Nigra with permission from the Archbishop of Trier, or Theophan the Recluse, the 19th-century Russian Orthodox monk who was later glorified as a saint.
 Celebrated figures who spent, or have spent, significant portions of their lives as recluses include Virgil, Michelangelo, Isaac Newton, Emily Brontë, J. D. Salinger, Emily Dickinson, Gustave Flaubert, Paul Cézanne, Nikola Tesla, Konstantin Tsiolkovsky, H.P. Lovecraft, Marie Curie, Marcel Proust, Howard Hughes, Greta Garbo, Jackson Pollock, Arturo Benedetti Michelangeli, Jean-Luc Godard, Thomas Pynchon, John Swartzwelder, Paul Allen, Layne Staley and Michael Jackson.