Blenheim is a civil parish in the West Oxfordshire district, in Oxfordshire, England, about north of Oxford.Parish and Town Councils in Oxfordshire – February 2012, accessed 21 May 2012 At its edge is Blenheim Palace, which is the birthplace of Sir Winston Churchill and the ancestral home of the Dukes of Marlborough. In 2001 it had a population of 78.Oxfordshire County Council The parish was formed on 1 April 1954 from Blenheim Park and part of Hensington Without.
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