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"The beauty of Arthur is that he was - indeed, according to some 'is' - whoever you want him to be," said Dr ap Huw.

Dr ap Huw said one reference in it is extremely telling.

However, just how Welsh he would have been is a "moot point", Dr ap Huw added.

Dr ap Huw describes the 12th Century writer as "the most influential author in the history of Wales".

Edmund Spencer's Faerie Queene drew heavily on Arthurian tradition and, when it was presented to Queen Elizabeth I in 1590, she was so delighted that she awarded him a pension of £50 a year for life," Dr ap Huw said. "But by then Arthur had become a Britannia or Gloriana-type figurehead for a nation.