Question: What American singer and actress had a love affair with Nelson Eddy?

full_context: Document 1: Judy Nelson: Judy Hill Nelson is an American author best known for her 1983–1991 romance (while married) with and eventual palimony suit against women's tennis star Martina Navratilova. After their break-up, Nelson was the author of the books "Love Match: Nelson vs. Navratilova", chronicling her relationship with the tennis star, and "Choices: My Journey After Leaving My Husband for Martina and a Lesbian Life", chronicling her coming out as a lesbian in the mid-1980s. She is the mother of two sons.
Document 2: Gale Sherwood: Gale Sherwood (born March 4, 1929) was a Canadian singer and actress, born Jacqueline Nash, who is best known as the singing partner of Nelson Eddy from 1953 until his death in 1967.
Document 3: Give Us This Night: Give Us This Night (1936) is one of five movies produced by Paramount Pictures featuring Gladys Swarthout, a very popular Metropolitan Opera mezzo-soprano. The studio was attempting to build on the popularity of Grace Moore, another opera singer, who had also expanded her talents into movies.
Document 4: Glynnis Talken Campbell: Glynnis Talken Campbell is an American romance author, composer, musician and voiceover actress, and is married to bass guitarist Richard Campbell. Glynnis Campbell studied music at California State University, Chico. Her first romantic novel, "My Champion", was nominated for a Romance Writers of America's RITA award for "Best First Book", and in 2009 was awarded "Book Buyers Best" Historical Romance for her novel "Danger's Kiss", written under the pen names Sarah McKerrigan and Kira Morgan.
Document 5: Judy Garland: Judy Garland (born Frances Ethel Gumm; June 10, 1922 – June 22, 1969) was an American singer, actress, and vaudevillian. She was renowned for her contralto vocals and attained international stardom that continued throughout a career spanning more than 40 years as an actress in musical and dramatic roles, as a recording artist, and on concert stages.
Document 6: Jeanette MacDonald: Jeanette Anna MacDonald (June 18, 1903 – January 14, 1965) was an American singer and actress best remembered for her musical films of the 1930s with Maurice Chevalier ("The Love Parade", "Love Me Tonight", "The Merry Widow" and "One Hour With You") and Nelson Eddy ("Naughty Marietta", "Rose-Marie", and "Maytime"). During the 1930s and 1940s she starred in 29 feature films, four nominated for Best Picture Oscars ("The Love Parade", "One Hour with You", "Naughty Marietta" and "San Francisco"), and recorded extensively, earning three gold records. She later appeared in opera, concerts, radio, and television. MacDonald was one of the most influential sopranos of the 20th century, introducing opera to movie-going audiences and inspiring a generation of singers.
Document 7: Heartsounds: Heartsounds is an autobiographical book written by Martha Weinman Lear, former staff writer and editor for "The New York Times Magazine". The book was first published in 1980 by Simon & Schuster. A 1984 made-for-television movie (see below) starring James Garner and Mary Tyler Moore was based on the book.
Document 8: Sharon Rich: Sharon Rich (born June 11, 1953) is an author and film historian, best known for the biography "Sweethearts" about 1930s singing stars Jeanette MacDonald and Nelson Eddy. She was close friends for many years with Jeanette's older sister, actress Blossom Rock (aka Marie Blake). Along with interviewing hundreds of people, Rich had access to many collections of private letters, Eddy’s personal scrapbooks, diary entries, FBI files and MacDonald’s unpublished autobiography. As follow up documentation to "Sweethearts", Rich has written several additional books and edited and written over seventy magazine articles. In 1995 she was awarded a Dame of Merit by the Knights of Malta for her contribution to History and Literature.
Document 9: Full Service (book): Full Service: My Adventures in Hollywood and the Secret Sex Lives of the Stars is a "tell all" book about the sex lives of Hollywood stars from the late 1940s to the early 1980s by Scotty Bowers, with Lionel Friedberg as a contributing author. Bowers makes many claims about the sex lives of many people, most of whom were associated with the Hollywood movie industry during that period. The book, which was vetted by a libel lawyer before publication, was refused by several publishers before ultimately being accepted by Grove Press and Grove/Atlantic. Matt Tyrnauer, director of "", is currently in production on a documentary film about Bowers's life.
Document 10: Henrietta Valor: Henrietta Valor (April 28, 1935 – November 23, 2007) was an actress and singer who starred on Broadway in, “Jacques Brel is Alive and Well and Living in Paris”. Other Broadway credits include, “Half a Sixpence”, “Applause”, and “Annie”. Off-Broadway she played a leading role in “Fashion”, which she reprised twenty years later at The Pasadena Playhouse. She toured extensively for the USO in Europe, Africa, and the Far East including Viet Nam. Her regional theatre credits include: The Studio Arena Stage in Buffalo, The Alliance Theatre in Atlanta, A.C.T. in Seattle, The Williamstown Theatre in Mass., PAF Playhouse in Huntington, Long Island, Playwrights Horizons in New York, The Boston Shakespeare Company, and three seasons in the acting company of The Guthrie Theatre in Minneapolis. She studied opera on scholarship with Lotte Lehmann in Santa Barbara and acting with Alvina Krause at Northwestern University where she received her Bachelor of Music degree. She was a runner-up in the Metropolitan Opera Auditions in New York City. Her last acting role was Miss Framer in, “Lettice and Lovage” at The Pasadena Playhouse.
Document 11: Marta Eggerth: Marta Eggerth (17 April 1912 – 26 December 2013) was a Hungarian-born American actress and singer from "The Silver Age of Operetta". Many of the 20th century's most famous operetta composers, including Franz Lehár, Fritz Kreisler, Robert Stolz, Oscar Straus and Paul Abraham, composed works especially for her.
Document 12: Grace Moore: Grace Moore (December 5, 1898January 26, 1947) was an American operatic soprano and actress in musical theatre and film. She was nicknamed the "Tennessee Nightingale." Her films helped to popularize opera by bringing it to a larger audience. She was nominated for the Academy Award for Best Actress for her performance in "One Night of Love".
Document 13: List of Judy Garland biographies: Judy Garland has been the subject of many biographies. Since her death in 1969, she has been the subject of over two dozen books. The first of these was Brad Steiger's "Judy Garland", published shortly after her death, which includes information on Garland's astrological chart, analysis of her handwriting, numerology and biorhythms. Most of the books are entirely about Garland, but some, including Patricia Fox-Sheinwold's "Too Young to Die", "Some Are Born Great" by Adela Rogers St. Johns and Jane Ellen Wayne's "The Golden Girls of MGM", merely feature a chapter about her. Two volumes, "Rainbow's End: The Judy Garland Show" by Coyne Steven Sanders and Mel Tormé's "The Other Side of the Rainbow: On the Dawn Patrol With Judy Garland", focus on Garland's television series, "The Judy Garland Show". Garland's last husband, Mickey Deans, co-authored an early biography in 1972 and Garland's daughter Lorna Luft wrote a family memoir in 1988.
Document 14: Sweethearts (book): Sweethearts: The Timeless Love Affair On screen and Off Between Jeanette MacDonald and Nelson Eddy is biographical book by Sharon Rich. First published in hardback in 1994 by Donald I. Fine, Inc., the book covers the relationship of Jeanette MacDonald and Nelson Eddy. Rich drew heavily on Eddy's mother, who had kept Eddy's diaries and letters.
Document 15: Lily Pons: Lily Pons (April 12, 1898 – February 13, 1976) was a French-American operatic soprano and actress who had an active career from the late 1920s through the early 1970s. As an opera singer she specialized in the coloratura soprano repertoire and was particularly associated with the title roles in "Lakmé" and "Lucia di Lammermoor". In addition to appearing as a guest artist with many opera houses internationally, Pons enjoyed a long association with the Metropolitan Opera in New York City, where she performed nearly 300 times between 1931 and 1960.
ground_truth: Jeanette MacDonald