--snip
The Battle of Hastings never took place and Adolf Hitler is a fictional character. Robin Hood really existed, Harold Wilson saved Britain during the Second World War and Conan the Barbarian is a bona fide figure from early Nordic history.
...
Some 57 per cent think King Arthur existed and 5 per cent accept that Conan the Barbarian, the warrior played by Arnold Schwarzenegger in a 1982 film, used to stalk the planet for real. Almost one in two believe William Wallace, the 13th-century Scottish resistance leader played by Mel Gibson in his film Braveheart, was invented for the silver screen.
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The survey of 2,069 adults aged 16 or over was conducted for Blenheim Palace to mark the 300th anniversary of the Battle of Blenheim.
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More than a quarter of people do not know in which century the Great War took place and 57 per cent believe that the Battle of the Bulge, the Nazi counter-offensive in the Ardennes in 1945, never happened.
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--snap
http://news.independent.co.uk/uk/this_britain/story.jsp?story=508517