Alan Williams may refer to: Wikipedia
Alan John Williams (14 October 1930 – 21 December 2014) was a British Labour politician who served as Member of Parliament (MP) for Swansea West for over 45 years, from 1964 to 2010. He was the longest serving MP for a Welsh constituency since David Lloyd George and built a reputation for his detailed scrutiny of the ways in which public money was spent. Wikipedia
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