Question: What member of the "Gang of Four" rebels was also known as Shirley Catlin?

Context paragraphs:
Harwich by-election, 1954: The Harwich by-election, 1954 was a parliamentary by-election held on 11 February 1954 for the British House of Commons constituency of Harwich in England.  The seat had become vacant when the National Liberal Member of Parliament (MP) Stanley Holmes was elevated to the peerage as Baron Dovercourt, having held the seat since a 1935 General Election.  The 'Conservative and Liberal' candidate, Julian Ridsdale held the seat for the government.  He remained the constituency's MP until his retirement at the 1992 general election.  The Labour candidate Shirley Catlin would later, under the name Shirley Williams, be elected as MP for Hitchin and would serve in the Cabinets of Harold Wilson and James Callaghan.

Junior Coghlan: Frank Coghlan, Jr. (March 15, 1916 – September 7, 2009) also known as "Junior Coghlan", was an American actor who later became a career officer in the United States Navy and a Naval Aviator.  He appeared in approximately 129 films and television programs between 1920 and 1974.  During the 1920s and 1930s, he became a popular child and juvenile actor, appearing in films with Pola Negri, Jack Dempsey, William Haines, Shirley Temple, Mickey Rooney, and Bette Davis.  He appeared in early "Our Gang" comedies, but he is best known for the role of Billy Batson in the 1941 motion picture serial "Adventures of Captain Marvel".  Coghlan later served 23 years as an aviator and officer in the U.S. Navy, from 1942 to 1965.  After retiring from the Navy, he returned to acting and appeared in television, films, and commercials.  He published an autobiography in 1992 and died in 2009 at age 93.

Sanyika Shakur: Sanyika Shakur (born Kody Dehjon Scott; November 13, 1963), also known by his former street moniker Monster, is a former member of the Los Angeles gang the Eight Tray Gangster Crips.  He got his nickname as a 13-year-old gang member when he beat and stomped a robbery victim until he was disfigured.  Shakur claimed to have reformed in prison, joined the Republic of New Afrika movement, and wrote a 1993 autobiography called "".

Argonne Rebels Drum and Bugle Corps: The Argonne Rebels Drum and Bugle Corps (also known as "Argonne" or "The Rebels") were an Open Class (a distinction now known as World Class) competitive junior drum and bugle corps.  Based in Great Bend and Barton County, Kansas, the Rebels were one of the thirteen founding member corps of Drum Corps International.

Roy Daugherty: Roy Daugherty, also known as Arkansas Tom Jones, (1870 - August 16, 1924) was an American outlaw of the Old West, and a member of the Wild Bunch gang, led by Bill Doolin.  He was the longest lived, as well as the last surviving member of the gang.

Gang of Four (Harlem): The Gang of Four, also known as the Harlem Clubhouse, was an African-American political coalition from Harlem whose members later ascended to top political posts.  It is named after the Gang of Four of China.

Catlin Wilson House: The Catlin Wilson House, also known as the Murphy Dunlap House, is a historic Greek Revival style house in Eutaw, Alabama, United States.  The one-story wood framed building was built in 1844.  A pedimented front portico with four Doric columns covers the three central bays of the front facade.  The house was recorded by the Historic American Buildings Survey in 1936.  It was listed on the Alabama Register of Landmarks and Heritage on November 5, 1976.  It was subsequently added to the National Register of Historic Places as a part of the Antebellum Homes in Eutaw Thematic Resource on April 2, 1982, due to its architectural significance.

Flores Daniel Gang: Flores Daniel Gang, was an outlaw gang also known as ""las Manillas"" (the Handcuffs), throughout Southern California during 1856-1857.  It was led by Californio's Juan Flores and Pancho Daniel.  Contemporary newspaper accounts of "las Manillas" all reported that the leader of las Manillas was originally Pancho Daniel, but that Juan Flores assumed the leadership role after Daniel was injured in the Barton ambush.  According to the account of Harris Newmark, Flores had been sent to prison for horse-stealing and was just another member of the gang.

Mato-tope: Mato-tope (also known as Ma-to-toh-pe or Four Bears, from "mato" "bear" and "tope" "four") (c.1784 - July 30, 1837) was the second chief of the Mandan tribe to be known as "Four Bears," a name he earned after charging the Assiniboine tribe during battle with the strength of four bears.  Four Bears lived in the first half of the 19th century on the upper Missouri River in what is now North Dakota.  Four Bears was a favorite subject of artists, painted by George Catlin and Karl Bodmer.

Shirley Williams: Shirley Vivian Teresa Brittain Williams, Baroness Williams of Crosby, ("née" Catlin; born 27 July 1930) is a British politician and academic who represents the Liberal Democrats.  Originally a Labour Member of Parliament (MP) and Cabinet Minister, she was one of the "Gang of Four" rebels who founded the Social Democratic Party (SDP) in 1981.

Supporting paragraphs: Harwich by-election, 1954 Shirley Williams
Answer: Shirley Williams