The film King Arthur, is written by David Franzoni (Gladiator),and stars Clive Owen, Keira Knightly, Ioan Gruffudd and Ray Winstone and is due for release in July.
John Matthews, who was the consultant historian on the film, believes the stories are based on a real historical figure who had been a Roman soldier on Hadrian's Wall in Cumbria. 
Matthews said: "I think the Northern Arthur works ultimately better than the Southwest or Wales.
"Both geographically and historically the scenario at and around Hadrian's Wall works well. 
"In the film most of the action is set in and around the Wall, though Arthur and the knights also venture into the 'uncharted area' between there and the Antonine Wall."
Capitalise
The historian Michael Wood agrees that the original stories 'surprisingly do not take us to the southwest or to Wales, but to Cumbria, southern Scotland, and the ancient Kingdom of Rheged around the Solway.'
Tourism chiefs in Cumbria are now hoping to capitalise on the publicity from the film's release. 
Councils in Carlisle and Eden are considering plans for a trail, The Lost Realm of King Arthur, including the key Arthurian sites in the area. 
Cumbria Tourist Board has also added information about the county's links with the legendary king on its website at www.golakes.co.uk
John Matthews also says that Arthur was probably based at the fort of Camboglanna, which is now known as Birdoswald. This is also believed to have been the location of King Arthur's epic last battle, the Battle of Camlann.  
Eric Robson, chairman of Cumbria Tourist Board and a BBC presenter, said: "Camboglanna means 'crooked glen' and Birdoswald is the only place on the wall that fits this description as it is sited above a sharp curve in the River Irthing. 
"It also has one of the most spectacular locations of any of the forts on Hadrian's Wall.  So it is certainly easy to imagine a major battle taking place there."
Ken Campbell, chairman of the Arthurian Society in Cumbria, who is working on the plans for The Lost Realm of King Arthur, commented: "Many of the stories about King Arthur originated around firesides in Cumbria. 
Chaos
"After the Romans evacuated this area it was plunged into chaos and the Arthurian legends are based on the exploits of local chiefs or warlords," he added.
Carlisle, which was the largest Roman fortress in Britain, features in many of the early ballads about King Arthur. 
Michael Wood, believes that this is where King Arthur, or the chiefs on whom the stories are based, made his headquarters, so the Cumbrian city has a strong claim to be the real Camelot. 
The North American historian Norma Lorre Goodrich has also said that King Arthur, or at least his head, is buried at Arthuret Church in Longtown, north of Carlisle.
The new King Arthur film tells of when Rome pulls out of Britain after 400 years of rule and abandons its people to the bloodthirsty Saxons bent on full-scale invasion.