Donald David Dixon Ronald O’Connor (August 28, 1925 - September 27, 2003) was an American dancer, singer, and actor who came to fame in a series of movies in which he co-starred alternately with Gloria Jean, Peggy Ryan, and Francis the Talking Mule. He is best known today for his role as Gene Kelly's friend and colleague Cosmo Brown in Singin' in the Rain (1952).

Though he considered Danville, Illinois to be his home town, O’Connor was born in St. Elizabeth Hospital in Chicago. His parents, Effie Irene (née Crane) and John Edward "Chuck" O'Connor, were vaudeville entertainers. His father's family was from County Cork, Ireland. When O'Connor was only a few years old, he and his sister Arlene were in a car crash outside a theater in Hartford, Connecticut; O'Connor survived, but his sister was killed. Several weeks later, his father died of a heart attack while dancing on stage in Brockton, Massachusetts. O'Connor at the time was being held in the arms of the theater manager Mr. Maurice Sims.

Joseph Cornell (December 24, 1903 – December 29, 1972) was an American artist and sculptor, one of the pioneers and most celebrated exponents of assemblage. Influenced by the Surrealists, he was also an avant-garde experimental filmmaker.

Joseph Cornell was born in Nyack, New York, to Joseph Cornell, a well-to-do designer and merchant of textiles, and Helen TenBroeck Storms Cornell, who had trained as a kindergarten teacher. The Cornells had four children: Joseph, Elizabeth (b. 1905), Helen (b. 1906), and Robert (b. 1910). Both parents came from socially prominent families of Dutch ancestry, long-established in New York State. Cornell's father died in 1917, leaving the family in strained circumstances. Following the elder Cornell's death, his wife and children moved to the borough of Queens in New York City. Cornell attended Phillips Academy in Andover, Massachusetts, in the class of 1921, although he did not graduate.

Except for the three and a half years he spent at Phillips, he lived for most of his life in a small, wooden-frame house on Utopia Parkway in a working-class area of Flushing, along with his mother and his brother Robert, whom cerebral palsy had rendered physically challenged.

Sirhan Bishara Sirhan (Arabic: سرحان بشارة سرحان, born March 19, 1944) is a Jordanian citizen who was convicted for the assassination of United States Senator Robert F. Kennedy. He is currently serving a life sentence at Pleasant Valley State Prison in Coalinga, California.

Sirhan is a Christian Palestinian Arab who was born in Jerusalem and who strongly opposed Israel. In 1989, he told David Frost "My only connection with Robert Kennedy was his sole support of Israel and his deliberate attempt to send those 50 bombers to Israel to obviously do harm to the Palestinians." Some scholars believe that the assassination was the first major incident of political violence in the United States stemming from the Arab–Israeli conflict in the Middle East. In 2011, his defense attorneys filed motions for a new trial, arguing Sirhan "should be freed from prison or granted a new trial based on 'formidable evidence', asserting his innocence and 'horrendous violations' of his rights".

Sirhan is a Christian Arab with Jordanian citizenship born in Jerusalem, Mandatory Palestine. When he was 12 years old, his family emigrated, moving briefly to New York and then to California. He attended Eliot Junior High School (now known as Charles W. Eliot Middle School) in Altadena, California, John Muir High School and Pasadena City College. Sirhan's father Bishara was characterized as a stern man who often beat his sons harshly. Shortly after the family's move to California, Bishara returned alone to the Middle East.

Judy Garland (June 10, 1922 – June 22, 1969) was an American actress, singer and vaudevillian. Renowned for her contralto voice, she attained international stardom through a career that spanned 45 of her 47 years as an actress in musical and dramatic roles, as a recording artist and on the concert stage. Respected for her versatility, she received a Juvenile Academy Award and won a Golden Globe Award, as well as Grammy Awards and a Special Tony Award. She was nominated for the Academy Award for Best Actress for her role in the remake of A Star is Born and for Best Supporting Actress for her performance in the 1961 film, Judgment at Nuremberg. At 39 years of age, she remains the youngest recipient of the Cecil B. DeMille Award for lifetime achievement in the motion picture industry.

After appearing in vaudeville with her two older sisters, Garland was signed to Metro-Goldwyn-Mayer as a teenager. There she made more than two dozen films, including nine with Mickey Rooney and the 1939 film with which she would be most identified, The Wizard of Oz. After 15 years, she was released from the studio but gained renewed success through record-breaking concert appearances, including a return to acting beginning with critically acclaimed performances.