Donald Maclean
Donald Duart Maclean (1913-1983) was one of four members of MI5 who acted as spies for Russia in the Second World War. He defected to Russia in 1951 after his secret as a spy was revealed. He was the son of a Cabinet Minister (see below).
Sir Donald Maclean (1864-1932) was a Liberal MP for Bath (1906-1910), Peebles and Selkirk (1910-1918), Peebles and South Midlothian (1918-1922), and Northern Division of Cornwall (1929-1932) and served as president of the Board of Education (1931-1932). He led the Liberals in the House of Commons from 1918-1922, and served as nominal Leader of the Opposition, as the Liberal leader, Herbert Henry Asquith had been turned out of parliament, while Labour had no official leader and Sinn Fein refused to participate in normal parliamentary government.
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