Shirley Williams, English academic and politician, Secretary of State for Education
Shirley Vivian Teresa Brittain Williams, Baroness Williams of Crosby, (née Catlin; 27 July 1930 – 11 April 2021) was a British politician and academic. Originally a Labour Party Member of Parliament (MP), she served in the Labour cabinet from 1974 to 1979. She was one of the "Gang of Four" rebels who founded the Social Democratic Party (SDP) in 1981 and, at the time of her retirement from politics, was a Liberal Democrat.Williams was elected to the House of Commons for Hitchin in the 1964 general election. She served as Minister for Education and Science from 1967 to 1969 and Minister of State for Home Affairs from 1969 to 1970. She served as Shadow Home Secretary from 1971 and 1973. In 1974, she became Secretary of State for Prices and Consumer Protection in Harold Wilson's cabinet. When Wilson was succeeded by James Callaghan, she served as Secretary of State for Education and Science and Paymaster General from 1976 to 1979. She lost her seat to the Conservative Party at the 1979 general election.

In 1981, dismayed with the Labour Party's left-ward movement under Michael Foot, she was one of the "Gang of Four"—centrist Labour figures who formed the SDP. Williams won the 1981 Crosby by-election and became the first SDP member elected to Parliament, but she lost the seat in the 1983 general election. She served as President of the SDP from 1982 to 1987 and supported the SDP's merger with the Liberal Party that formed the Liberal Democrats.

Between 2001 and 2004, she served as Leader of the Liberal Democrats in the House of Lords and, from 2007 to 2010, as Adviser on Nuclear Proliferation to Prime Minister Gordon Brown. She remained an active member of the House of Lords until announcing her retirement in January 2016, and was a Professor Emerita of Electoral Politics at the John F. Kennedy School of Government at Harvard University at the time of her death at age 90, having been one of the last surviving members of the Labour governments of the 1970s.