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Jo Grimond
Joseph Grimond, Baron Grimond, (; 29 July 1913 – 24 October 1993) was a British politician, leader of the Liberal Party for eleven years from 1956 to 1967 and again briefly on an interim basis in 1976.
Grimond was a long-term supporter of Scottish home rule; and, during his leadership, he successfully advocated for the Liberal Party to support the abolition of Britain's nuclear arsenal.
Source: Wikipedia